FR2928087A1 - COMPOSITION FOR COLORING KERATIN FIBERS COMPRISING AT LEAST ONE DIRECT DYE WITH PROTECTED DISULFIDE / THIOL FUNCTION AND AT LEAST ONE THIOL FUNCTIONAL SILICY COMPOUND AND PROCESS USING THE COMPOSITION. - Google Patents

Abstract

The invention relates to a composition comprising i) one or more direct dyes with disulfide function (s) or protected thiol function (s) and ii) one or more silicon compound (s) (S) with thiol function (s), used for coloring keratinous fibers, in particular human fibers such as the hair.It also relates to the process for dyeing keratin fibers using said composition and the use of dyes disulfide-protected or protected thiol combined with thiol-containing silicon compounds in the dyeing and lightening of keratin fibers.This composition allows new systems of uniform hair coloring, very powerful, tenacious vis-à-vis external agents and which do not alter the cosmetic properties of keratin fibers.

Description

COMPOSITION FOR THE COLORING OF KERATIN FIBERS COMPRISING AT LEAST ONE DIRECT DYE WITH PROTECTED DISULFIDE / THIOL FUNCTION AND AT LEAST ONE THIOL-FUNCTIONED SILICY COMPOUND AND PROCESS USING THE COMPOSITION The subject of the invention is a composition comprising at least one direct disulfide-function dye or protected thiol and at least one thiol-functional silicon compound used to dye keratin fibers, especially human fibers such as the hair. It also relates to the process for dyeing keratin fibers using said composition and the use of direct dyes with disulfide function associated with the thiol-functional silicon compound in the coloration and lightening of keratin fibers. It is known to dye keratin fibers by direct dyeing or semi-permanent coloring. Direct staining or semi-permanent staining involves bringing color through a colored molecule that adsorbs on the surface of the hair or penetrates the hair. Thus, the method conventionally used in direct dyeing consists in applying to the keratin fibers direct dyes which are colored and dyestuff molecules having an affinity for the fibers, to leave the fibers in contact with the dye molecules and then to rinse the fibers. Generally, this technology leads to chromatic colorations.

For several years, scientific research has been carried out to modify the color of keratin materials, especially keratinous fibers, and in particular to mask the white fibers, to modify the color of the fibers permanently or fleetingly, and to respond to new desires and needs in terms of of colors and durability. In applications EP 1 647 580 or WO 2005/097051 there has been proposed a direct dye comprising a disulfide function capable of grafting to the hair covalently, using a reducing treatment. These direct dyes are more stubborn on keratin fibers with respect to shampoos. The reducing agents described in these documents are small size and low molecular weight reducing agents such that thioglycolic acid, thiolactic acid and their associated salts, cysteine, and borohydrides, tend to migrate within the fiber which can alter the integrity of this fiber having the effect of making it brittle. In addition, the reducers of the state of the art have the disadvantage of generating unpleasant odors.

The object of the present invention is to provide novel hair dyeing systems which make it possible to obtain colorings that are almost odorless, homogeneous, very intense, stubborn with respect to external agents and which do not alter the cosmetic properties of the fibers. keratin. Another object of the invention is to provide coloring systems which make it possible to obtain visible colorings on dark hair and lightening effects on naturally or artificially dark keratin fibers without degradation of the fiber.

Another object of the invention is to make it possible to erase the coloration on light hair or dark hair when it is desired, while limiting alterations in the quality of the fiber.

These objects are achieved with the present invention which relates to a dye composition, comprising in a suitable cosmetic medium, i) one or more dyes chosen from the direct dyes with disulfide function (s), or function (s) protected thiol (s) and (ii) one or more silicon compound (s) with thiol function (s).

The subject of the invention is also a method for dyeing keratinous fibers, especially human fibers, such as the hair, which consists in applying the dyeing composition mentioned above to the fibers.

Another subject of the invention is the use, for the coloration of keratinous fibers, in particular the hair, of one or more direct dye (s) with disulfide function (s), or function (s). protected thiol (s) and one or more silicon compound (s) with thiol function (s).

The composition according to the invention makes it possible in particular to stain in a powerful and homogeneous manner human keratinous fibers such as the hair while respecting the integrity of the fibers. Without being bound by any theory, we believe that the thiol-functional silicon compounds useful in the present invention can reduce the cystine molecules present on the surface of the hair, thus allowing the appearance of thiol functions on the surface of the hair and then the covalent attachment. direct dyes with disulfide, thiol or thiol function protected directly to the hair, while avoiding penetration into the hair. These silicon compounds can bind themselves to the cystine-rich proteins of the hair surface and establish further bonds with thiol or thiol protected disulfide-based dyes by sulfur-sulfur exchange. Where appropriate, the establishment of asymmetrical disulfide bonds between the surface of the hair polymers and coloring chromophores from the dyes of the invention may be assisted by an oxidizing agent which sets between them two thiol functions belonging to two different species. The silicon compounds with thiol function (s) thus provide a role of etching for the surface fixing of disulfide dyes or thiol or protected thiols. Unexpectedly, the degradation of keratinous fibers is very limited.

The colorations obtained are aesthetic very intense and very stubborn vis-à-vis common aggressions such as sun, perspiration, sebum, and other hair treatments such as shampoos, while respecting the keratin fibers. The intensity obtained is particularly remarkable. It is the same for the homogeneity of the color.

Another advantage of the invention relates to the erasure at discretion of the coloration which is made possible with a minimum of alteration of the quality of the keratinous fiber. Within the meaning of the present invention, and unless a different indication is given: a direct dye with disulfide function (s) is a direct dye comprising one or more chromophores which absorbs light in the visible spectrum, and comprising one or more disulfide bonds: ## EQU1 ## between two carbon atoms, directly or indirectly related to the chromophore (s) of the dye. Preferably a single disulfide bond is indirectly connected to the (x) chromophore (s); the bond ûSûSû being capable of being reduced in a cosmetically acceptable medium; when the direct dye contains several chromophores, the chromophores may be the same or different; A protected direct dye with a thiol function is a direct dye comprising a chromophore, and comprising one or more protected thiol functions ûSY 'where Y' is a protecting group known to those skilled in the art, for example those described in the Protectine Groups literature. in Organic Synthesis, TW Greene, John Willey & Sons ed., NY, 1981, pp.193-217; Protecting Groups, P. Kocienski, Thieme, 3rd ed., 2005, chap. 5; and Ullmann's Encyclopedia, Peptide Synthesis, p. 4-5, 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002 / 14356007.a19; A chromophore is a radical derived from a dye, i.e. a radical derived from a light-absorbing molecule in the visible range of radiation visually and physiologically perceptible to humans ie at a length of absorption wave Xabs included between 400 and 800 nm; the chromophore may be fluorescent ie it is capable of absorbing in UV or visible radiation at an Xabs wavelength of between 250 and 800 nm and capable of reemitting in the visible range at a wavelength of Xem emission between 400 and 800 nm, the disulfide dyes according to the invention contain one or more chromophores, and these disulfide dyes are capable of absorbing light at a wavelength λabs particularly between 400 and 700 nm; The fluorescent disulfide dyes according to the invention are dyes containing at least one fluorescent chromophore, and these disulfide dyes are capable of absorbing in the visible at a wavelength λabs particularly between 400 and 800 nm and re-emitting in the visible at a longer wavelength Xem than that absorbed between 400 and 800 nm. The difference of the absorption and emission wavelength 40 also called Stoke or Stoke's shift is between 1 nm and 100 nm. More preferably, the fluorescent dyes are dyes capable of absorbing at an Xabs wavelength of between 420 nm and 550 nm and of reemitting in the visible at a wavelength λ min of between 470 and 600 nm; Chromophores are said to be different when they differ in their chemical structure and may be chromophores from different families or from the same family provided that they have different chemical structures: for example, chromophores may be chosen from the family. azo dyes but differ by the chemical structure of the radicals constituting it or by the respective position of these radicals; an alkylene chain represents a divalent C1-C20 chain; especially C1-C6, more particularly C1-C2 when the chain is linear; optionally substituted with one or more, identical or different, groups selected from hydroxy, (C1-C2) alkoxy, (poly) hydroxy (C2-C4) alkoxy (di) (C1-C2) (alkyl) amino, Ra-Za; C (Zb) -, and Ra-Za-S (O) t- with Za, Zb, identical or different, representing an oxygen atom, sulfur, or a group NRa ', Ra, representing an alkali metal, a hydrogen atom, an alkyl group or else is absent if another part of the cationic molecule and Ra 'representing a hydrogen atom or an alkyl group and t is 1 or 2; a divalent C1-C30 saturated or unsaturated hydrocarbon chain, optionally substituted, represents a hydrocarbon chain, particularly C1-C8 chain, optionally comprising one or more conjugated or unsubstituted 7T double bonds, particularly the hydrocarbon chain is saturated; said chain is optionally substituted with one or more, identical or different, groups selected from hydroxy, (C1-C2) alkoxy, (poly) hydroxy (C2-C4) alkoxy (di) (C1-C2) (alkyl) amino, Ra -Za-C (Zb) -, and Ra-Za-S (O) t- with Za, Zb, identical or different, representing an oxygen atom, sulfur, or a group NRa ', Ra, representing a metal alkali, a hydrogen atom, an alkyl group or else is absent if another part of the cationic molecule and Ra 'representing a hydrogen atom or an alkyl group and t is 1 or 2; the aryl or heteroaryl radicals or the aryl or heteroaryl part of a radical may be substituted by at least one substituent borne by a carbon atom, chosen from: a C1-C16, preferably C1-C8, alkyl radical; optionally substituted by one or more radicals chosen from hydroxyl, C1-C2 alkoxy, (poly) -hydroxyalkoxy C2-C4, acylamino, amino substituted by two identical or different C1-C4 alkyl radicals, optionally substituted by at least one hydroxyl group, or both radicals being able to form, with the nitrogen atom to which they are attached, a 5- to 7-membered, preferably 5 or 6-membered, optionally substituted saturated or unsaturated heterocycle optionally comprising another heteroatom 4040 identical or different from nitrogen; a halogen atom; a hydroxyl group; a C1-C2 alkoxy radical; a C2-C4 (poly) -hydroxyalkoxy radical; an amino radical; a 5- or 6-membered heterocycloalkyl radical; a 5- or 6-membered optionally cationic heteroaryl radical, preferentially imidazolium, and optionally substituted by a (C1-C4) alkyl radical, preferably methyl; an amino radical substituted with one or two identical or different C 1 -C 6 alkyl radicals optionally carrying at least: i) a hydroxyl group; ii) an amino group optionally substituted with one or two C 1 -C 3 alkyl radicals optionally substituted, said alkyl radicals being able to form, with the nitrogen atom to which they are attached, an optionally substituted 5 to 7-membered heterocyclic ring, saturated or unsaturated, optionally comprising at least one other heteroatom which is different from or different from nitrogen, iii ) a quaternary ammonium group -N + R'R "R" ', M- for which R', R ", R" ', which may be identical or different, represent a hydrogen atom, or a C1-C4 alkyl group; and M- represents the counter-ion of the organic acid, mineral or of the corresponding halide, iv) or an optionally cationic 5- or 6-membered heteroaryl radical, preferentially imidazolium, and optionally substituted by a (C 1 -C 4) radical; alkyl, preferably methyl; an acylamino radical (-NR-COR ') in which the radical R is a hydrogen atom, a C1-C4 alkyl radical optionally bearing at least one hydroxyl group and the radical R' is a C1-alkyl radical; -C2; a carbamoyl radical ((R) 2 N-CO-) in which the R radicals, which may be identical or different, represent a hydrogen atom or a C 1 -C 4 alkyl radical optionally carrying at least one hydroxyl group; an alkylsulphonylamino radical (R'SO2-NR-) in which the radical R represents a hydrogen atom, a C1-C4 alkyl radical optionally bearing at least one hydroxyl group and the radical R 'represents a C1-alkyl radical; -C4, a phenyl radical; an aminosulphonyl radical ((R) 2 N-SO 2 -) in which the R radicals, which may be identical or different, represent a hydrogen atom, a C 1 -C 4 alkyl radical optionally bearing at least one hydroxyl group, - a carboxylic radical in acid or salified form (preferably with an alkali metal or ammonium, substituted or unsubstituted); a cyano group; a nitro or nitroso group; a polyhaloalkyl group, preferentially trifluoromethyl; the cyclic or heterocyclic part of a nonaromatic radical may be substituted by at least one substituent chosen from the following groups: - hydroxy, - (C 1 -C 4) alkoxy, (C 2 -C 4) (poly) hydroxyalkoxy, - (C 1 -C 4) alkyl, -alkylcarbonylamino (RCO-NR'-) in which the radical R 'is a hydrogen atom, a C1-C4 alkyl radical optionally bearing at least one hydroxyl group and the radical R is a C1-C2 alkyl radical; amino optionally substituted with one or two identical or different C1-C4 alkyl groups, themselves optionally bearing at least one hydroxyl group, said alkyl radicals being able to form, with the nitrogen atom to which they are attached, a heterocycle comprising 5- to 7-membered, optionally substituted saturated or unsaturated compound optionally comprising at least one other heteroatom different from or different from nitrogen; alkylcarbonyloxy (RCO-O-) in which the radical R is a C 1 -C 4 alkyl radical, an amino group optionally substituted by one or two identical or different C 1 -C 4 alkyl groups, themselves optionally carrying at least one group hydroxy, said alkyl radicals being able to form, with the nitrogen atom to which they are attached, a 5- to 7-membered optionally substituted saturated or unsaturated heterocycle optionally comprising at least one other heteroatom which is different from or different from nitrogen; alkoxycarbonyl (RG-CO-) in which the radical R is a C 1 -C 4 alkoxy radical, G is an oxygen atom, or an amino group optionally substituted by a C 1 -C 4 alkyl group, which may itself carry at least one hydroxyl group, said alkyl radical being able to form, with the nitrogen atom to which they are attached, an optionally substituted 5 to 7-membered heterocyclic ring, saturated or unsaturated, optionally comprising at least one other heteroatom different from or different from nitrogen; a cyclic, heterocyclic, or non-aromatic portion of an aryl or heteroaryl radical may also be substituted by one or more oxo groups; a hydrocarbon chain is unsaturated when it comprises one or more double bonds and / or one or more triple bonds; an aryl radical represents a mono or polycyclic carbon group, condensed or not, comprising from 6 to 22 carbon atoms, and of which at least one ring is aromatic; preferably the aryl radical is a phenyl, biphenyl, naphthyl, indenyl, anthracenyl, or tetrahydronaphthyl; a heteroaryl radical represents a mono or polycyclic group, condensed or not, optionally cationic, comprising from 5 to 22 members, from 1 to 6 heteroatoms chosen from nitrogen, oxygen, sulfur and selenium, and at least one cycle is aromatic; preferably heteroaryl is selected from acridinyl, benzimidazolyl, benzobistriazolyl, benzopyrazolyl, benzopyridazinyle, benzoquinolyl, benzothiazolyl, benzotriazolyl, benzoxazolyl, pyridinyl, tetrazolyl, dihydrothiazolyl, imidazopyridinyl, imidazolyl, indolyl, isoquinolyl, naphthoimidazolyle, naphthooxazolyle, naphthopyrazolyle, oxadiazolyl, oxazolyl, oxazolopyridyl phenazinyl, phenoxazolyl, pyrazinyl, pyrazolyl, pyrilyl, pyrazoyltriazyl, pyridyl, pyridinoimidazolyl, pyrrolyl, quinolyl, tetrazolyl, thiadiazolyl, thiazolyl, thiazolopyridinyl, thiazoylimidazolyl, thiopyrylyl, triazolyl, xanthylyl and its ammonium salt; a cyclic radical is a non-aromatic, mono or polycyclic cycloalkyl radical, condensed or not, containing from 5 to 22 carbon atoms, which can comprise from one to several unsaturations; a heterocyclic radical or is a radical which may contain one or two unsaturated but non-aromatic, mono or polycyclic, condensed or non-fused, containing from 5 to 22 ring members, comprising from 1 to 6 heteroatoms chosen from the nitrogen atom, oxygen, sulfur and selenium; a heterocycloalkyl radical is a saturated heterocyclic radical; an alkyl radical is a C1-C20 hydrocarbon radical, linear or branched, preferably C1-C8; an alkenylene radical is an alkyl radical as defined above which may contain from 1 to 4 double bonds -C = C-, conjugated or otherwise; particularly the alkenylene group contains 1 or 2 unsaturation (s); the optionally substituted expression attributed to the alkyl radical, that is to say that said alkyl radical may be substituted by one or more radicals chosen from i) hydroxy, ii) C 1 -C 4 alkoxy, iii) acylamino, iv) amino optionally substituted by one or two identical or different C 1 -C 4 alkyl radicals, said alkyl radicals being capable of forming, with the nitrogen atom bearing them, a 5- to 7-membered heterocyl, optionally comprising another heteroatom different from or different from nitrogen; v) or a quaternary ammonium group -N + R'R "R" ', M- for which R', R ", R" ', which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl group; or else -N + R'R "R" 'forms a heteroaryl such as imidazolium optionally substituted with a C1-C4 alkyl group, and M- represents the counterion of the corresponding organic, inorganic acid or halide ; an alkoxy radical is an alkyl-oxy radical for which the alkyl radical is a hydrocarbon radical, linear or branched, C1-C16 preferentially C1-C8; when the alkoxy group is optionally substituted, this implies that the alkyl group is optionally substituted as defined above; The height of tone is the known unit of the professionals of the hairdressing, and published in the book Science of hair treatments of Charles ZVIAK 1988, Ed. Masson, p. 215 and 278, the pitch ranges from 1 (black) to 10 (light light blond), a unit corresponding to one tone, the higher the number and the lighter the shade, the darker keratin fiber is a keratinous fiber which has a luminescence L * encoded in the CIEL * a * b * system, less than or equal to 45 and preferably less than or equal to 40, furthermore knowing that L * = 0 is equivalent to black and L * = 100 to white, naturally or artificially dark hair, are hair whose pitch is less than or equal to 6 (dark blond) and preferably less than or equal to 4 (chestnut). The artificially colored hair is hair whose color has been modified by a coloring treatment, for example a coloration with direct dyes or oxidation dyes. 1.1. According to one embodiment of the invention, the direct dyes with a disulfide-protected thiol function are chosen from dyes of formula (I): ) their organic or inorganic acid salts, their isomeric isomers, geometric and solvates such as hydrates, formula (I), in which: • U represents a radical chosen from: i) -S-C'sat - ( X ') p.-A'; ii) ùSuCsat ù (X ') p. and iii) ùY; • A and A ', identical or different, represent a radical containing one or more cationic or non-cationic chromophore (s), fluorescent (s) or not; Y represents a protecting group of thiol function; X and X ', which may be identical or different, represent a linear or branched, saturated or unsaturated, C1-C30 divalent hydrocarbon chain, optionally interrupted and / or optionally terminated at one or both of its ends by one or more divalent groups or combinations thereof selected from: wherein R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R or R are the same or different, selected from hydrogen, a C1-C4 alkyl, hydroxyalkyl or aminoalkyl radical; a saturated or unsaturated, fused or unsaturated aromatic or non-fused (hetero) cyclic radical optionally comprising one or more identical or different heteroatoms, optionally substituted; • p and p ', identical or different, are 0 or 1; • Csat and Csat, identical or different, represent a linear or branched, optionally substituted, optionally cyclic C1-C18 alkylene chain; D corresponds to a radical chosen from hydroxy, hydroxyalkyl, alkoxy, carboxylic, carboxylate, amino, alkylamino and dialkylamino radicals.

A particular embodiment of the invention relates to the dyeing compositions comprising, as disulfide-functional dye, a dye of formula (I) as defined above. Another particular embodiment of the invention is concerned with dyeing compositions comprising one or more fluorescent dye (s) with disulfide (s) function (s) or thiol (s) protected (s) in order to color and / or lighten the dark keratin fibers. More particularly, the fluorescent dye (s) have a disulfide function (s).

1.1.1. Y: According to a particular embodiment of the invention, in the formula (I) above, Y is a protective group known to those skilled in the art such as those described in the books Protective Groups in Organic Synthesis, TW Greene John Willey & Sons ed., NY, 1981, pp.193-217; Protecting Groups, P. Kocienski, Thieme, 3rd ed., 2005, chap. 5, and Ullmann's Encyclopedia, Peptide Synthesis, p. 4-5, 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002 / 14356007.a19; Particularly, when Y represents a protective group of the thiol group, the latter is chosen from the following radicals: (C 1 -C 4) alkylcarbonyl; (C1-C4) alkylthiocarbonyl; (C1-C4) alkoxycarbonyl; (C 1 -C 4) alkoxythiocarbonyl; C 1 -C 4 alkylthio thiocarbonyl; ^ (di) (C1-C4) (alkyl) aminocarbonyl; ^ (di) (C1-C4) (alkyl) aminothiocarbonyl; arylcarbonyl as phenylcarbonyl; aryloxycarbonyl; aryl (C 1 -C 4) alkoxycarbonyl; (di) (C1-C4) (alkyl) aminocarbonyl as dimethylaminocarbonyl; (C1-C4) (alkyl) arylaminocarbonyl; carboxy; ^ S03; W with W representing an alkali metal such as sodium or potassium, or a counterion of the cationic chromophore A and W are absent; optionally substituted aryl such as phenyl, dibenzosuberyl, or 1,3,5-cycloheptatrienyl; optionally substituted heteroaryl; including in particular cationic or non-cationic heteroaryl, comprising from 1 to 4 following heteroatoms: i) monocyclic with 5, 6 or 7 members such as furanyl or furyl, pyrrolyl or pyrryl, thiophenyl or thienyl, pyrazolyl, oxazolyl, oxazolium, isoxazolyl, isoxazolium thiazolyl, thiazolium, isothiazolyl, isothiazolium, 1,2,4-triazolyl, 1,2,4-triazolium, 1,2,3-triazolyl, 1,2,3-triazolium, 1,2,4-oxazolyl, 1 2,4-oxazolium 1,2,4-thiadiazolyl 1,2,4-thiadiazolium pyrylium thiopyridyl pyridinium pyrimidinyl pyrimidinium pyrazinyl pyrazinium pyridazinyl pyridazinium triazinyl triazinium tetrazinyl tetrazinium azepine azepinium, oxazepinyl, oxazepinium, thiepinyl, thiepinium, imidazolyl, imidazolium; ii) 8 to 11-membered bicyclic compounds such as indolyl, indolinium, benzoimidazolyl, benzoimidazolium, benzoxazolyl, benzoxazolium, dihydrobenzoxazolinyl, benzothiazolyl, benzothiazolium, pyridoimidazolyl, pyridoimidazolium, thienocycloheptadienyl, these mono or bicyclic groups being optionally substituted by one or more groups such as C 1 -C 4) alkyl as methyl, or polyhalo (C 1 -C 4) alkyl as trifluoromethyl; iii) or tricyclic ABC according to: wherein the two rings A, C optionally comprise a heteroatom, and the ring B is a 5-, 6- or 7-membered particularly 6-membered ring and contains at least one heteroatom such as pyperidyl, pyranyl;

optionally substituted heterocycloalkyl, optionally cationic, the heterocycloalkyl group represents in particular a saturated or partially saturated monocyclic group with 5, 6 or 7 members comprising 1 to 4 heteroatoms chosen from oxygen, sulfur and nitrogen, such as di / tetrahydrofuranyl, di / tetrahydrothiophenyl, di / tetrahydropyrroyl, di / tetrahydropyranyl, di / tetra / hexa-hydrothiopyranyl, dihydropyridyl, piperazinyl, piperidinyl, tetramethylpiperidinyl, morpholinyl, di / tetra / hexahydroazepinyl, di / tetrahydropyridinyl, these groups being optionally substituted by a or more groups such as (C1-C4) alkyl, oxo or thioxo; or the heterocycle represents the following group: ## STR1 ## wherein R ' °, R'd, R'e, R'f, R'g and R'h, identical or different, represent a hydrogen atom or a group (C1-C4) alkyl, or two groups R'g with R h, and / or R'e with R'f form an oxo or thioxo group, or else R'g with R'e together form a cycloalkyl, and v represents an integer inclusive between 1 and 3, preferentially R '° at R'h represent a hydrogen atom, and An 'represents a counterion; ^ -C (NR' ° R'd) = N + R'eR'f; An 'with R' °, R'd , R'e and R'f, which are identical or different, represent a hydrogen atom or a (C 1 -C 4) alkyl group, preferentially R '° to R' f represent a hydrogen atom, and An - represents a counter-ion; -C (NR '° R'd) = NR'e; with R' °, R'd and R'e are as defined previously; ^ (di) aryl (C, -C4) alkyl optionally substituted such as 9-anthracene nylmethyl, phenylmethyl or diphenylmethyl optionally substituted with one or more groups chosen in particular from (C1-C4) alkyl, (C1-C4) alkoxy such as methoxy, hydroxy, alkylcarbonyl, (di) (C1-C4) (alkyl) amino such as dimethylamino ; optionally substituted heteroaryl (C 1 -C 4) alkyl, the heteroaryl group is in particular, cationic or non-monocyclic, comprising 5 or 6 members and 1 to 4 heteroatoms chosen from nitrogen, oxygen and sulfur; , such as pyrrolyl, furanyl, thiophenyl, pyridyl, pyridyl N-oxide such as 4-pyridyl or 2-pyridyl-N-oxide, pyrylium, pyridinium, triazinyl, optionally substituted with one or more group such as alkyl particularly methyl preferably (di) heteroaryl (C 1 -C 4) alkyl is (di) heteroarylmethyl or (di) heteroarylethyl; CR'R2R3 with R ', R2 and R3, which may be identical or different, representing a halogen atom or a group chosen from: - (C1-C4) alkyl; - (C1-C4) alkoxy; optionally substituted aryl such as phenyl optionally substituted by one or more groups such as (C 1 -C 4) alkyl, (C 1 -C 4) alkoxy, hydroxy; - optionally substituted heteroaryl such as thiophenyl, furanyl, pyrrolyl, pyranyl, pyridyl, optionally substituted with a (C 1 -C 4) alkyl group; -P (Z ') R''R'2R'3 with R'1, and R'2 identical or different represent a hydroxyl group, (C1-C4) alkoxy or alkyl, R'3 represents a hydroxyl group or ( C 1 -C 4) alkoxy, and Z 'represents an oxygen or sulfur atom; cyclic sterically hindered; and optionally substituted alkoxyalkyl such as methoxymethyl (MOM), ethoxyethyl (EOM) and isobutoxymethyl.

According to a particular embodiment, the protected thiols fluorescent dyes of formula (I), comprising a cationic aromatic 5- or 6-membered monocyclic heterocyclic group Y 1), comprising from 1 to 4 heteroatoms chosen from oxygen, sulfur and sulfuric acid. nitrogen, such as oxazolium, isoxazolium, thiazolium, isothiazolium, 1,2,4-triazolium, 1,2,3-triazolium, 1,2,4-oxazolium, 1,2,4-thiadiazolium, pyrylium, pyridinium, pyrimidinium, pyrazinyl, pyrazinium, pyridazinium, triazinium, tetrazinium, oxazepinium, thiepinyl, thiepinium, imidazolium; ii) cationic 8 to 11-membered bicyclic heteroaryl such as indolinium, benzoimidazolium, benzoxazolium, benzothiazolium, these mono or bicyclic heteroaryl groups being optionally substituted with one or more groups such as alkyl as methyl, or polyhalo (C 1 -C 4) alkyl as trifluoromethyl; iii) or heterocyclic according to: R'd An ,,, in which R '° and R'd, identical or different, represent a hydrogen atom or a (C 1 -C 4) alkyl group; preferentially R '° to R'd represent a (C 1 -C 4) alkyl group such as methyl; and An "'represents a counterion.

Especially Y represents a group chosen from oxazolium, isoxazolium, thiazolium, isothiazolium, 1,2,4-triazolium, 1,2,3-triazolium, 1,2,4-oxazolium, 1,2,4-thiadiazolium, pyrylium, pyridinium , pyrimidinium, pyrazinium, pyridazinium, triazinium and imidazolium, benzoimidazolium, benzoxazolium, benzothiazolium, these groups being optionally substituted by one or more (C1-C4) alkyl groups including methyl.

In particular Y represents a protective group such as: - (C1-C4) alkylcarbonyl such as methylcarbonyl or ethylcarbonyl; -arylcarbonyl as phenylcarbonyl; - (C1-C4) alkoxycarbonyl; -aryloxycarbonyl; aryl (C1-C4) alkoxycarbonyl; - (di) (C1-C4) (alkyl) aminocarbonyl such as dimethylaminocarbonyl; - (C1-C4) (alkyl) arylaminocarbonyl; optionally substituted aryl such as phenyl; 5- or 6-membered monocyclic heteroaryl such as imidazolyl or pyridyl; 5- to 6-membered cationic monocyclic heteroaryl such as pyrylium, pyridinium, pyrimidinium, pyrazinium, pyridazinium, triazinium, imidazolium; these groups being optionally substituted by one or more, identical or different, (C 1 -C 4) alkyl groups such as methyl; - 8 to 11-membered cationic bicyclic heteroaryl such as benzoimidazolium, or benzoxazolium; these groups being optionally substituted by one or more, identical or different, (C 1 -C 4) alkyl groups such as methyl; cationic heterocycle of the following formula: ## STR1 ## An "'- -C (NH2) = NH; 15 - SO3, M + with M + representing an alkali metal such as sodium or potassium, 1.1.2 Csat and C'sat As indicated previously, in formulas (I) ), Csat and C'sat, independently of each other, represent a linear or branched, optionally substituted, optionally cyclic C1-C18 alkylene chain. Substitute groups that may be mentioned include amino groups, C 1 -C 4) alkylamino, (C 1 -C 4) dialkylamino, or the group Ra-Za-C (Zb) - (in which Za, Zb, which may be identical or different, represent an oxygen or sulfur atom, or a NRa 'group, and Ra, represents an alkali metal, a hydrogen atom, or a C1-C4 alkyl group and Ra' represents a hydrogen atom or a C1-C4 alkyl group) preferably present on the carbon in Beta or gamma position of the sulfur atoms Preferably, in the case of the formulas (I), Csat and C'sat, represent a chain - (CH2) k- with k integer, inclusive between 1 and 8. 1.1.3 X and X ': According to a particular embodiment of the invention, in the formulas (I), mentioned above, when p is equal to 1, x and X', which are identical or different , represent the following sequence: - (T) t- (Z) z (T ') r- said sequence being connected in formulas (I) symmetrically as follows: - Csat (or C'sat) - ( T) t- (Z), (A or A '); wherein T and T ', identical or different, represent one or more radicals or combinations thereof selected from: -S-; -N (R) -; -N + (R) (R 0) -; -SO-; -SO2-; -CO-; with R, R °, which may be identical or different, representing a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 hydroxyalkyl radical or a (C1-C4) alkyl radical; and a heterocycloalkyl or heteroaryl radical, cationic or non-cationic, preferentially monocyclic, preferably containing two heteroatoms (more preferably two nitrogen atoms) and preferably comprising from 5 to 7 ring members, more preferably imidazolium; the indices t and t ', which are identical or different, are equal to 0 or 1; Z represents: - (CH2) m with m being from 1 to 8; In which q is an integer between 1 and 5 inclusive; an aryl, alkylaryl or arylalkyl radical in which the alkyl radical is C 1 -C 4 and the aryl radical is preferably C 6, being optionally substituted by at least one SO 3 M group with M representing a hydrogen atom, an alkali metal or a ammonium group substituted by one or more identical or different linear or branched C 1 -C 13 alkyl radicals optionally bearing at least one hydroxy z is 0 or 1. Furthermore, according to one particular embodiment of the invention, Z represents: SO3M) O_4 03M) 0-4 where M represents a hydrogen atom, an alkali metal or an ammonium group or an ammonium group substituted with one or more identical or different linear or branched alkyl radicals, in C1- C10 optionally carrying at least one hydroxy and 0-4 represents an integer inclusive between 0 and 4. 1.1.4. A and A ': The radicals A and / or A' of formulas (I) may contain one or more chromophores, which may be identical or different. As chromophores A and / or A 'useful in the present invention, mention may be made of the radicals derived from acridine dyes, acridones, anthranthrones, anthrapyrimidines, anthraquinones, azines, azoethines, azomethines, benzanthrones, benzimidazoles, benzimidazolones, benzindoles, benzoxazoles, benzopyrans, benzothiazoles, benzoquinones, bisazines, bis isoindolines, carboxanilides, coumarins, cyanines (such as azacarbocyanines, diazacarbocyanines) , diazahemicyanines, hemicyanines, tetraazacarbocyanines), diazines, diketopyrrolopyrroles, dioxazines, diphenylamines, diphenylmethanes, dithiazines, flavonoids such as flavanthrones and flavones, fluorindines, formazans, hydrazones, in particular arylhydrazones, hydroxyketones, indamines, indanthrones, indigoides and pseudoindigoids, indophenols , indoanilines, isoindolines, isoindolinones, isoviolant hrones, lactones, methines, naphthalimides, naphthhanilides, naphtholactams, naphthoquinones, nitro, including nitro (hetero) aromatic, oxadiazoles, oxazines, perilones, perinones, perylenes, phenazines, phenothiazines, phthalocyanine, polyenes / carotenoids, porphyrins, pyranthrones, pyrazolanthrones, pyrazolones, pyrimidinoanthrones, pyronines, quinacridones, quinolines, quinophthalones, squarans, stilbenes, tetrazoliums, thiazines, thioindigo, thiopyronines, triarylmethanes, xanthenes. As useful fluorescent chromophores A and / or A 'in the present invention, mention may be made of the radicals derived from acridine dyes, acridones, benzanthrones, benzimidazoles, benzimidazolones, benzindoles, benzoxazoles, benzopyrans, benzothiazoles, coumarines, difluoro {2- [ (2H-pyrrol-2-ylidene-kN) methyl] -1H-pyrrolatokN} borates (BODIPY), diketopyrrolo-pyrroles, fluorindines, (poly) methines (especially cyanines and styryls / hemicyanines), naphthalimides, naphthhanilides, naphthylamine (as dansyls), oxadiazoles, oxazines, perilones, perinones, perylenes, polyenes / carotenoids, squaranes, stilbenes, xanthenes.

Mention may also be made of fluorescent dyes A and / or A 'described in documents EP 1133975, WO 03/029359, EP 860636, WO 95/01772, WO 95/15144 and EP 714954 and those listed in the encyclopedia "The chemistry". of synthetic dye "by K. VENKATARAMAN, 1952, Academic press vol. 1 to 7, in the encyclopedia" Kirk Othmer "" Chemical technology ", chapter" dyes and intermediate Dye ", 1993, Wiley and sons, and in various chapters of encyclopedia "ULLMANN's ENCYCLOPEDIA of Industrial Chemistry" 7th edition, Wiley and Sons, in The Handbook, A Guide to Fluorescent Probes and Labeling Technologies, 10th ed Molecular Probes / Invitrogen - Oregon 2005, available on the Internet or in previous print editions.

Among the chromophores nitro A and / or A 'that may be used according to the invention, there may be mentioned in a non-limiting manner the radicals resulting from the following dyes: 1,4-diamino-2-nitrobenzene-1-amino-2-nitro-4- 13-hydroxyethylaminobenzene-1-amino-2-nitro-4-bis (13-hydroxyethyl) -aminobenzene -1,4-bis (13-hydroxyethylamino) -2-nitrobenzene -1-13-hydroxyethylamino-2-nitro-4-bis - (13-hydroxyethylamino) -benzene -1-13-hydroxyethylamino-2-nitro-4-aminobenzene -1-13-hydroxyethylamino-2-nitro-4- (ethyl) (13-hydroxyethyl) -aminobenzene -1-amino- 3-methyl-4-13-hydroxyethylamino-6-nitrobenzene -1-amino-2-nitro-4-13-hydroxyethylamino-5-chlorobenzene -1,2-Diamino-4-nitrobenzene-1-amino-2-yl hydroxyethylamino-5-nitrobenzene-1,2-bis-3-hydroxyethylamino) -4-nitrobenzene -1-amino-2-tris (hydroxymethyl) methylamino-5-nitrobenzene -1-hydroxy-2-amino-5-nitrobenzene 1-Hydroxy-2-amino-4-nitrobenzene -1-Hydroxy-3-nitro-4-aminobenzene - 1-Hydroxy-2-amino-4,6-dinitrobenzene -1-13-hydro 1-Methoxy-2-13-hydroxyethylamino-5-nitrobenzene -1-13-hydroxyethyloxy-3-methylamino-4-nitrobenzene -1-13-dihydroxypropyloxy-3-methylamino 4-nitrobenzene -1-13-hydroxyethylamino-4-13, γ-dihydroxypropyloxy-2-nitrobenzene -1-13y-dihydroxypropylamino-4-trifluoromethyl-2-nitrobenzene -1-13-hydroxyethylamino-4-trifluoromethyl-2-nitrobenzene - 1-13-hydroxyethylamino-3-methyl-2-nitrobenzene-1, 3-aminomethylamino-5-methoxy-2-nitrobenzene -1-Hydroxy-2-chloro-6-ethylamino-4-nitrobenzene -1-Hydroxy-2 6-amino-6-amino-4-nitrobenzene -1-hydroxy-6-bis-3-hydroxyethyl) -amino-3-nitrobenzene -1-13-hydroxyethylamino-2-nitrobenzene -1-Hydroxy-4-13-hydroxyethylaminobenzene 3-nitrobenzene. Among the azo chromophores A and / or A 'that may be used according to the invention, mention may be made of the radicals originating from the cationic azo dyes described in the patent applications WO 95/15144, WO 95/01772 and EP-714954.

Mention may also be made, among the azo chromophores, of those described in the Color Index International 3rd edition, and in particular the following compounds: Disperse Red 17 Acid Yellow 9 Acid Black 1-Basic Red 22 Basic Red 76 Basic Basic 57 Basic Brown 16 - Acid Yellow 36 - Acid Orange 7 - Acid Red 33 - Acid Red 35 - Basic Brown 17 - Acid Yellow 23 - Acid Orange 24 - Disperse Black 9.

We may also mention 1- (4'-aminodiphenylazo) -2-methyl-4bis- (13-hydroxyethyl) aminobenzene and 4-hydroxy-3- (2-methoxyphenylazo) -1-naphthalene sulfonic acid. Among the quinonic chromophores A and / or A ', those mentioned in the aforementioned Color Index International are suitable, and among these, mention may be made, inter alia, of the radicals resulting from the following colorants: - Disperse Red 15 - Solvent Violet 13 - Acid Purple 43 - Disperse Violet 1 - Disperse Violet 4 - Disperse Blue 1 - Disperse Violet 8 - Disperse Blue 3 - Disperse Red 11 - Acid Blue 62 - Disperse Blue 7 - Basic Blue 22 - Disperse Violet 15 - Basic Blue 99 as well as compounds 1-N-methylmorpholiniumpropylamino-4-hydroxyanthraquinone -1-Aminopropylamino-4-methylaminoanthraquinone -1-Aminopropylaminoanthraquinone -5-13-hydroxyethyl-1,4-diaminoanthraquinone -2-Aminoethylaminoanthraquinone-1,4-Bis-03y-dihydroxypropylamino ) anthraquinone. Among the azine chromophores A and / or A 'are those listed in the Color Index International and for example the radicals resulting from the following dyes: -Basic Blue 17 -Basic Red 2. Among the triarylmethane chromophores A and / or A' which can be used according to the invention includes, in addition to those listed in the Color Index, the radicals derived from the following dyes: - Basic Green 1 - Acid Blue 9 - Basic Violet 3 - Basic Violet 14 - Basic Blue 7 - Violet Acid 49 - Basic Blue Among the indoamine chromophores A and / or A 'that may be used according to the invention, mention may be made of the radicals derived from the following dyes: -2-13-hydroxyethylamino-5- [bis- (13-4'-hydroxyethyl) ) amino] anilino-1,4-benzoquinone -2-13-hydroxyethylamino-5- (2'-methoxy-4'-amino) anilino-1,4-benzoquinone-3-N (2'-Chloro-4'- hydroxy) phenyl-acetylamino-6-methoxy-1,4-benzoquinone imine-3-N (3'-chloro-4'-methylamino) phenyl-ureido-6-methyl-1,4-benzoquinone imine -3- [4] '-N- (Ethyl carbamylméthyl) -amino] -p henyl-ureido-6-methyl-1,4-benzoquinone imine. Mention may also be made of the chromophores described in the documents US 5888252, EP 1133975, WO 03/029359, EP 860636, WO 95/01772, WO 95/15144 and EP 714954. Mention may also be made of those listed in the encyclopedia "The chemistry of synthetic dye "by K. VENKATARAMAN, 1952, Academic press vol 1 to 7, in the encyclopedia" Kirk Othmer "" Chemical technology ", chapter" dyes and intermediate Dye ", 1993, Wiley and sons, and in various chapters of encyclopedia "ULLMANN's ENCYCLOPEDIA of Industrial Chemistry" 7th edition, Wiley and sons.

Preferably, the chromophores A and / or A 'are chosen from those derived from azo-type dyes, anthraquinone and hydrazone. Preferably, the fluorescent chromophores A and / or A 'are chosen from those derived from dyes of the coumarin type, (poly) methines (in particular cyanines and styryl / haemcyanines) and naphthalimides.

According to a variant, A and / or A 'of formulas (I) contain at least one cationic radical carried by or included in at least one of the chromophores. Preferably, the cationic radical is a quaternary ammonium. These cationic radicals are for example an alkylammonium, acridinium, benzimidazolium, benzobistriazolium, benzopyrazolium, benzopyridazinium, benzoquinolium, benzothiazolium, benzotriazolium, benzoxazolium, bi-pyridinium, bistetrazolium, dihydrothiazolium, imidazopyridinium, imidazolium, indolium, isoquinolium, naphthoimidazolium, naphthooxazolium, naphthopyrazolium radical, oxadiazolium, oxazolium, oxazolopyridinium, oxonium, phenazinium, phenooxazolium, pyrazinium, pyrazolium, pyrazoyltriazolium, pyridinium, pyridinoimidazolium, pyrrolium, pyrylium, quinolium, tetrazolium, thiadiazolium, thiazolium, thiazolopyridinium, thiazoylimidazolium, thiopyrylium, triazolium or xanthylium.

Examples of cationic chromophores useful in the present invention have been mentioned previously. Other examples are given in the patent applications WO 95/01772, WO 95/15144, EP 714954, EP 318294 and WO 03/029359. According to a particular embodiment, the radicals A, A 'in the formulas (I ) or (II), comprise at least one cationic azo chromophore, described for example in EP 850636, FR 2788433, EP 920856, WO 9948465, FR 2757385, EP 850637, EP 918053, WO 9744004, FR 2570946, FR 2285851, DE 2538363. , FR 2189006, FR 1560664, FR 1540423, FR 1567219, FR 1516943, FR 1221122, DE 4220388, DE 4137005, WO 0166646, US 5708151, WO 9501772, WO 515144, GB 1195386, US 3524842, US 5879413, EP 1062940, EP 1133976, GB 738585, DE 2527638, FR 2275462, GB 1974-27645, Acta Histochem. (1978), 61 (1), 48-52; Tsitologiya (1968), 10 (3), 403-5; Zh. Obshch. Khim. (1970), 40 (1), 195-202; Ann. Chim. (Rome) (1975), 65 (5-6), 305-14; Journal of the Chinese Chemical Society (Taipei) (1998), 45 (1), 209-211; Rev. Roum. Chim. (1988), 33 (4), 377-83; Text. Res. J. (1984), 54 (2), 105-7; Chim. Ind. (Milan) (1974), 56 (9), 600-3; Khim. Tekhnol. (1979), 22 (5), 548-53; Ger. Monatsh. Chem. (1975), 106 (3), 643-8; MRL Bull. Res. Dev. (1992), 6 (2), 21-7; Lihua Jianyan, Huaxue Fence (1993), 29 (4), 233-4; Dyes Pigm. (1992), 19 (1), 69-79; Dyes Pigm. (1989), 11 (3), 163-72.

By way of example of dyes with disulfide function (s), mention may be made of the following dyes: MOSO 2 00 00 ss S SO3M N OH HO SO3M SO3M with M representing: a hydrogen atom, an alkali metal or a ammonium group or an ammonium group substituted with one or more identical or different linear or branched C 1 -C 10 alkyl radicals optionally bearing at least one hydroxyl. ## STR00005 ##, ## STR2 ## wherein R 1, N) 1, N, 1, NH, NH, NH, NH, NH, NH, NH, NH, NH, NH, NH, NH, NH ## STR1 ## These particular compounds, regardless of any choice of free or salified form, as well as their method of preparation, are known. of the technique.

By way of particular examples, mention may also be made of the following new compounds, a preparation of which is described in the present invention, having the same meaning as above.

According to another variant of the invention, the disulfide-functional direct dye is a cationic dye comprising at least one quaternary ammonium radical and, in the formula (I), with p and p 'equal to 1; A and / or A ', identical or different, more preferably identical, represent WN = N-Ar- or Ar-N = NW-, with W representing a condensed heteroaryl or not, comprising a quaternary ammonium, optionally substituted preferably by a or more alkyl group; Ar represents a phenyl-type 5- or 6-membered (hetero) aryl radical, or a naphthyl, benzopyrydyl, indolinyl, or benzoindolinyl (hetero) aromatic bicycle, optionally substituted by one or more halogen atoms, preferably chlorine, fluorine; with one or more alkyl groups, preferably C1-C4; by one or more hydroxy groups; by one or more alkoxy groups, with one or more hydroxyalkyl groups, with one or more amino or (di) alkylamino groups, preferably with the C 1 -C 4 alkyl part. According to a variant p = 1, z = t '= O, t = 1 and T is N (R) -, preferably in the para position on Ar with respect to the azo function. Especially in a variant p = 1, z = t '= O, t = 1 and T represents ùN (R) -, preferably in the para position on Ar with respect to the azo function and T' represents a group -N (R) ) -, -N + (R) (R °) - or an imidazolium.

According to another particular embodiment of the invention, the disulphide dye is a cationic fluorescent dye comprising at least one fluorescent chromophore and a quaternary ammonium radical as defined in formula (I) with p and p 'equal to 1: A and / or A ', identical or different, more preferably identical, represent WC (R °) = C (Rd) -Ar- or -WC (R °) = C (Rd) -Ar, with W representing a heterocycle or a heteroaryl, comprising a quaternary ammonium; Ar represents a 5- or 6-membered (hetero) aryl radical of the phenyl or pyridium type, or a naphthyl, benzopyrydinium, indolinyl, or benzoindolinyl (hetero) aromatic bicycle, optionally substituted with one or more halogen atoms, preferably chlorine, fluorine; with one or more alkyl groups, preferably C1-C4; by one or more hydroxy groups; by one or more alkoxy groups, with one or more hydroxyalkyl groups, with one or more amino or (di) alkylamino groups, preferably with the C1-C4 alkyl part, by one or more acylamino groups; by one or more heterocycloalkyl or heteroaryl 5 or 6-membered groups preferably selected from pyrrolidinyl, pyperazinyl, pyperidinyl and imidazolinyl; R °, Rd, identical or different, represent a hydrogen atom or a C 1 -C 4 alkyl group.

According to another variant, the disulphide dye is a cationic fluorescent dye comprising at least one quaternary ammonium radical and, in the formula (I), with p and p 'equal to 1 and A and / or A' representing a naphthalimidyl radical of formula or with 1 representing the bond with the group X or X ', Csat or Csat in which Re, Rf, Rg, and R ", which may be identical or different, represent a hydrogen atom or a C1-C6 alkyl group; C6 optionally substituted.

According to one embodiment of the invention p = 1, z = t '= O, t = 1 and T represents CN (R) -, preferably in the para position on Ar with respect to the olefin -C (R °) function. ) = C (Rd) -. Particularly in a variant p = 1, z = t '= O, t = 1 and T represents ûN (R) -, preferably in the para position on Ar with respect to the olefin function -C (R °) = C (Rd) and T 'represents a group -N (R) -, -N + (R) (R °) - or an imidazolium.

Preferably, W is an imidazolium, pyridinium, benzimidazolium, pyrazolium, benzothiazolium and quinolinium optionally substituted by one or more identical or different C 1 -C 4 alkyl radicals.

By way of example of dyes of the invention, mention may be made of the disulfide dyes chosen from the following formulas (III) to (XVI): ## STR1 ## (CR3R4) n (CR'3R'4) n, b ~ (CR'tR'2) m ~ N RZ R'H Rb R '"(III) Ta \ \ Tb (CR1R2) m (CR3R4) n (CR) 3R'4) n, "(CR'1R'2) mT N Rb R ~ (IV) R '" h T SiS T \ (CR1R2) m (CR3R4) n \ (CR'3R (CR'1R'2) ), NT SùS \ T Hét Nù (CR R) m (C R4) n \ b (CR'3R'4) n. ~ (CR 'R'2) m N HET' NNM 'I ~ \ M Ta ST \ SNN CRI R2) n, (CR3R4) n (CR3R4) nb (CR'iR'2) m. (VII) Rh M 's Rb \ N / Rf Re Ra M' / Rb

/ Ta \ / SS / 'Tb ù (CR, R2) m (CR3R4) n (CR'3R'4) n. (CR ', R2) m ~ M' M 'Rb R'b / Ta \ ~ SS ~ Tb _ùN `(CR1 R2) m (CR3R4) n ~ (CR 3R 4) n, \ (CR' R'2) m (VIII) R'9 \\ Ta SùS TR 'Nù CR R b \ () m (CR3R4) n \ (CR'3R. ~ (CF2'1 F2'2) m \ c N Rb R'a (X ) "h N Ta \ SùS \ Tb R 'N \ (CRIR2) n, (CR3R4) n (CR'3R'4) n, ~ (CR'lR'2) m, N Rb R'a (XI) R h / Ta S TR ~ c (CRIR2) ,, \ (CR3R4) n S ~ (CR3R4) n, b ~ (CR'1R N Red (XVI) formulas (III) to (XVI) in which: • G and G ', which may be identical or different, represent a group -NRCRd, -NR'CR'd, or optionally substituted C1-C6 alkoxy, preferably unsubstituted, preferentially G and G' represent a grouping -NRCRd and -NR'CR'd respectively • R ', R2, R3 and R4, which may be identical or different, represent a hydrogen atom or a C1-C6 alkyl alkyl group; • Ra and R'a, which may be identical or different, represent an aryl group (C, - C4) alkyl or a C1-C6 alkyl group optionally substituted by a hydroxy or amino group, C1-C4 alkylamino, C1-C4 dialkylamino, said radica alkyls which can form with the nitrogen atom which bears them a 5- to 7-membered heterocyl, optionally comprising another heteroatom which may or may not be different from nitrogen; ## EQU2 # ) n (CR'3R'4) n '"(CR'1R'2) m N H'-N R'c h M Ta _-ST / Rc S ^ - NN CR, R2) m (CR3R4 ) n (CR3R'4) nb ~ (CR ', R'2) m, \ R'd (XIV) R / Ta / c where (CR1R2) m N (CR3R4) n S ~ (CR3R4) n, N ( CR'1R N \ Red (XIII) Kg (XV) and Rb M 'Ra preferably Ra and R'a represent a C1-C3 alkyl group optionally substituted by a hydroxyl group, or a benzyl group;

Rb, R'b, which may be identical or different, represent a hydrogen atom, an aryl (C1-C4) alkyl group or an optionally substituted C1-C6 alkyl group; preferentially Rb, R'b represent a hydrogen atom or a C1-C3 alkyl or benzyl group;

• Rc, R'c, Rd and R'd, identical or different, represent a hydrogen atom, an aryl (C1-C4) alkyl, C1-C6 alkoxy group or an optionally substituted C1-C6 alkyl group; Rc, R'c, Rd and R'd preferably represent a hydrogen atom, a hydroxy group, C1-C3 alkoxy, amino, C1-C3 (di) alkylamino, or

a C1-C3 alkyl group optionally substituted with i) a hydroxy, + ii) amino group, iii) C1-C3 (di) alkylamino, or iv) quaternary ammonium (R ") (R" ') (R "") N -; or two adjacent radicals R, and Rd, R ', and R'd carried by the same nitrogen atom together form a heterocyclic or heteroaryl group; preferentially the heterocycle or the heteroaryl is monocyclic and comprises between 5 and 7 members; more preferentially, the groups are chosen from imidazolyl and pyrrolidinyl;

• Re and R'e, identical or different, represent a hydrocarbon chain C1-C6 alkylenyl divalent, linear or branched, optionally unsaturated; • Rf and R'f, identical or different, represent an ammonium + quaternary group (R ") (R" ') (R "") N - where R ", R"' and R "", which are identical or different, represent a hydrogen atom or a C1-C4 alkyl group or else + (R ") (R" ') (R "") N - represents a cationic heteroaryl group optionally substituted, preferably an imidazolinium group optionally substituted by a C1-C3 group; alkyl;

• Rg, R'g, R "g, R" 'g, Rh, R'h, R "h, and R"' h, identical or different, represent a hydrogen atom, a halogen atom, a amino group, C1-C4 alkylamino, C1-C4 dialkylamino, cyano, carboxy, hydroxy, trifluoromethyl, acylamino, C1-C4 alkoxy, (poly) hydroxyalkoxy C2-C4, alkylcarbonyloxy alkoxycarbonyl, alkylcarbonylamino, acylamino, carbamoyl; alkylsulfonylamino, an amino-sulphonyl radical, or a C1-C16 alkyl radical optionally substituted with a group chosen from C1-C12 alkoxy, hydroxy, cyano, carboxy, amino, C1-C4 alkylamino and C1-C4 dialkylamino, or both. alkyl radicals carried by the nitrogen atom of the amino group form a heterocycle comprising from 5 to 7 members and optionally comprising another heteroatom identical to or different from that of the nitrogen atom; preferably, Rg, Rg, Rg, Rg, Rh, Rh, R "h, and R" "h represent a hydrogen atom, a halogen atom or a C1-C3 alkyl group; Or two groups Rg and R'g; R "g and R" 'g; Rh, and R'h; R "h and R" 'h borne by two adjacent carbon atoms together form a benzo, indeno ring, a fused heterocycloalkyl or fused heteroaryl group; the benzo, indeno, heterocycloalkyl or heteroaryl ring being optionally substituted by a halogen atom, an amino group, C1-C4 alkylamino, C1-C4 dialkylamino, nitro, cyano, carboxy, hydroxy, trifluoromethyl, an acylamino, C1-alkoxy group; -C4, (poly) hydroxyalkoxy C2-C4, alkylcarbonyloxy alkoxycarbonyl, alkylcarbonylamino, an acylamino, carbamoyl, alkylsulfonylamino radical, an amino-sulfonyl radical, or a C1-C16 alkyl radical optionally substituted with: a group selected from C1-C12 alkoxy , hydroxy, cyano, carboxy, amino, C1-C4 alkylamino, C1-C4 dialkylamino, or the two alkyl radicals carried by the nitrogen atom of the amino group form a heterocycle comprising from 5 to 7 members and optionally comprising another heteroatom identical or different to that of the nitrogen atom; preferentially Rg and R'g; R "g and R" 'together form a benzo group; • or when G represents -NRCRd and G 'represents ûNR'CR'd two groups R, and R'g; R ', and R "g; Rd and Rg; R'd and R"' together form a saturated heteroaryl or heterocycle, optionally substituted with one or more C1-C6 alkyl groups, preferentially a heterocycle containing one or two heteroatoms; selected from nitrogen and oxygen and comprising between 5 and 7 members; more preferably, the heterocycle is chosen from the morpholinyl, piperazinyl, pyperidinyl and pyrrolidinyl groups; • R, R ', R ", and R"', identical or different, represent a hydrogen atom, or a C1-C4 alkyl group; R, R2, R3, R4, R'1, R'2, R'3, and R'4, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl or C1-C12 alkoxy group; hydroxy, cyano, carboxy, amino, C1-C4 alkylamino, C1-C4 dialkylamino, said alkyl radicals being able to form with the nitrogen atom which carries them a heterocycle comprising from 5 to 7 members, optionally comprising another heteroatom different or not nitrogen; preferably R 1, R 2, R 3, R 4, R '1, R' 2, R '3, and R' 4 are hydrogen atoms or an amino group; more preferably R 1, R 2, R 3, R 4, R '1, R' 2, R '3 and R' 4 represent a hydrogen atom; • Ta, Tb, identical or different, represent i) a covalent bond a, ii) or one or more radicals or combinations thereof selected from -SO2-, -O-, -S-, - N (R) -, - N + (R) (R °) -, -CO-, with R, R °, which may be identical or different, representing a hydrogen atom, a C1-C4 alkyl radical or a C1-C4 hydroxyalkyl radical; or aryl (C 1 -C 4) alkyl, preferably Ta is identical to Tb and represent a covalent bond a or a group selected from N (R) -, -C (O) -N (R) -, -N (R) ) -C (O) -, -OC (O) -, -C (O) -O- and -N + (R) (R °) -, with R, R ° identical or different representing a hydrogen atom or a C1-C4 alkyl group; more preferably Ta and Tb represent a bond a; iii) a heterocycloalkyl or heteroaryl radical, cationic or non-cationic, preferentially monocyclic, preferably identical, preferably containing two heteroatoms (more preferably two nitrogen atoms) and preferably comprising from 5 to 7 members such as imidazolium; Het Nù ù N Hét '• ~ N ~ or identical or different, represent an optionally substituted heterocyclic group; preferentially the heterocycles are identical, monocyclic, saturated, and comprise in total two nitrogen atoms and from 5 to 8 members; • represent an aryl or heteroaryl group fused to the imidazolium or phenyl ring; or is absent from the imidazolium or phenyl ring; preferentially when the ring is present the ring is a benzo; • m, m ', n and n', identical or different, represent an integer inclusive between 0 and 6 with m + n, m '+ n', identical or different, represents an integer inclusive between 1 and 10; preferentially m + n = m '+ n' = an integer inclusive between 2 and 4; more preferably m + n = m '+ n' = an integer equal to 2; M 'representing anionic counterion, derived from organic or inorganic acid salt, or an organic or inorganic base ensuring the electroneutrality of the molecule.

As the direct dyes disulfide dyes of the invention, the following chemical structures are exemplary: pH, N + N = N N CH 3 N CH 3 N = N 2 M '/ H 3 (N +) ù N = ## STR1 ## ## EQU1 ## SS N \ \ HO HO 2M '2M' 2 M 'HO OH 2M 2 M' 4M 'j- SS N +, / \ HN SS NH \ OH 10 N / ~ N + ~ iS • SN j 2 M' 2 M '4M '2M' O \ O SS O ~ NO \\ o N ~ N ~~ N \ N \ O 2M '/ - \ \ N SS ~ N \ / / - \ \ N SS ~ N \ / 2M' 2M 2M '/ N' 2M 'M' + ss 2M '- \ -Sg J_INA / \ N "2M' HO HO 2M 'OH 2M' OH 2M 'HO10 N / \ N / 2M' N / N \ N / 2M '/ N 2M' 4M '2M' ss 2m, NsS i 2M '-N + \ N / tis-s - \ - / N 33 HO 2M' ss, - / 2M 'N + OH N / NS / -1 - S 2M 'N + HO OH SS / N / 2M' / N / N \ 2M 'N / 4M' - O - O O- s - An- -o 2 M 'o - An- M' N / - \ ## STR1 ## With M 'and An-, representing an anionic counterion.

Among the protected thiol dyes of formula (I) with U representing Y where Y is a protective group, it is possible in particular to retain the compounds of the following formulas: ## STR5 ## ## STR5 ## / 2An- with An-, M ', identical or different, preferentially identical, representing anionic counterions. More particularly, the anionic counterion is chosen from halides, such as chloride or bromide, and mesylate. The dyeing composition that is useful in the invention contains, in a suitable cosmetic medium, a quantity of dye (s) with a thiol (s) function (s), disulfide (s) or thiol (s) protected (s), such that defined above, generally between 0.001 and 30% relative to the total weight of the composition. Preferably, this amount is between 0.01 and 5% by weight relative to the total weight of the composition. By way of example, the dye (s) is in an amount of between 0.01% and 2%.

It being understood that in the medium the interaction between the siliceous compound (s) with thiol function (s) according to the invention and the protected disulfide (s) or thiol (s) dye (s). (s) can generate the dye (s) by reductive cleavage of the disulfide function (s) at 20 ° C. Preferably, the direct dye according to the invention has a function (s) of disulphide (s). 1.5 The organic or inorganic acid salt and counter-ion of the dyes of the cosmetically acceptable invention - an organic acid salt or mineral is more particularly chosen from a salt derived from i) hydrochloric acid HCl, ii) hydrobromic acid HBr, iii) sulfuric acid H 2 SO 4, iv) alkylsulphonic acids: Alk-S (O) 20H such as d methylsulfonic acid and ethylsulfonic acid; v) arylsulfonic acids: Ar-S (O) 20H such as benzene sulfonic acid and toluene sulfonic acid; (vi) citric acid; vii) succinic acid; viii) tartaric acid; ix) lactic acid, x) alkoxysulfinic acids: Alk-O-S (O) OH such as methoxysulfinic acid and ethoxysulfinic acid; xi) aryloxysulfinic acids such as tolueneoxysulfinic acid and phenoxysulfinic acid; xii) phosphoric acid H3PO4; xiii) acetic acid CH3C (O) OH; xiv) triflic acid CF3SO3H and xv) tetrafluoroboric acid HBF4; an anionic counterion is an anion or an anionic group associated with the cationic charge of the dye; more particularly the anionic counterion is selected from i) halides such as chloride, bromide; ii) nitrates; iii) sulphonates, including C1-C6 alkylsulphonates: Alk-S (O) 20- such as methylsulphonate or mesylate and ethylsulphonate; iv) arylsulfonates: Ar-S (O) 20- such as benzenesulphonate and toluenesulphonate or tosylate; v) citrate; vi) succinate; (vii) tartrate; viii) lactate; ix) alkyl sulphates: Alk-O-S (O) O- such as methysulphate and ethylsulphate; x) arylsulfates: Ar-O-S (O) O- such as benzenesulphate and toluenesulphate; xi) alkoxysulfates: Alk-O-S (O) 20- such as methoxy sulfate and ethoxysulfate; xii) aryloxysulfates: Ar-O-S (O) 20-, xiii) phosphate; (xiv) acetate; xv) triflate; and xvi) borates such as tetrafluoroborate. Moreover, the addition salts which can be used in the context of the invention are chosen especially from addition salts with a cosmetically acceptable base, such as alkali metal hydroxides, such as sodium hydroxide, potassium hydroxide, ammonia and amines. or the alkanolamines. 2. Silicone compound with thiol function The thiol-functional silicon compound is an organic compound comprising one or more silicon atoms and one or more free thiol functions SH. The silicon compounds according to the invention may be silicon compounds with non-polymeric thiol function (s) or silicone oligomers with thiol function (s), linear silicon polymers with thiol function (s) such as I, CO -SH, non-linear silicon polymers with thiol function (s) including branched polymers with thiol function (s), hyperbranched polymers with thiol function (s) , the thiol function-containing silicon dendrimers and the thiol-functional siliconized crosslinked polymers. These compounds also have a particular molecular weight MM greater than or equal to 200 and preferably from 200 to 1000.

A particular embodiment of the invention relates to silicon compounds with non-polymeric thiol function (s). More particularly, the silicon compounds with thiol function (s) according to the invention contain from 1 to 15 silicon atom (s) per molecule and preferably 1 silicon atom per molecule.

The silicon compounds with thiol function (s) according to the invention contain in particular 1 to 12 (s) thiol (s) group (s) per molecule and preferably 1 to 2 (s) groups per molecule.

By way of example of silicon compounds with thiol function (s) according to the invention, mention may be made of the silicon compounds belonging to the following formulas (A), (B), (C) and (D): R RZ Si -X-ALK-SH (A) 1 R formula (A) in which:

- R ,, R2 and R3, identical or different, represent: i) a hydrogen atom, or a group selected from ii) hydroxy, iii) (C1-C20) alkyl, iv) (C, -C20) alkenylene, v) (C 1 -C 20) alkoxy, vi) (C 3 -C 9) cycloalkyloxy, vii) optionally substituted aryl such as phenyl or naphthyl, viii) aryloxy such as phenoxy, ix) cycloalkyl such as cyclopentyl or cyclohexyl, x) cycloalkyloxy such as cyclopentyloxy or cyclohexyloxy, xi) (C1-C6) alkylcarbonyloxy or (C1-C6) alkyl-C (O) -O-, xii) G- (C, -C20) alkyl, or xiii) G- (C, -C20) ) alkoxy with G representing a hydroxy, (C 1 -C 6) alkoxy, or thiol SH group; or else - two substituents R 1 and R 2, R 3 and R 3, R 2 and R 3, together with the silicon atom carrying them, form an optionally substituted monocyclic heterocycle comprising from 4 to 8 members, and bearing in particular silicon 1 or 2 heteroatoms, preferably oxygen, said heterocycle being more particularly optionally substituted by a (C1-C4) alkyl group; or three substituents R.sub.1, R.sub.2 and R.sub.3 together with the silicon atom carrying them, form an optionally substituted, fused bicyclic heterocycle comprising from 4 to 8 ring members, and bearing in particular at least one of silicon 1, 2 or 3 heteroatoms, preferably oxygen, said heterocycle being more particularly optionally substituted by a (C1-C4) alkyl group;

X represents: i) a bond a, ii) a heteroatom such as oxygen or a group NR with R representing a hydrogen atom or a (C 1 -C 4) alkyl group, or iii) X form with one of substituents R1, R2 or R3 and the silicon atom which carries it a heterocycle, particularly with 4-7 members, more particularly saturated with 5 members optionally substituted in particular by a carboxy group; Alkyl represents a C1-C20 alkylene chain, which is optionally interrupted and / or terminated at a of X, when X is different from a bond or a heteroatom, by: i) a heteroatom such as oxygen, sulfur ; Ii) a group selected from ùC (O) ù, ùN (R) ù, ùN (R) ùC (O) ù, ùC (O) ùN (R) ù, ùN (R) ùC (O) ùN (R) ## STR1 ## where R and R ', which may be identical or different, represent a hydrogen atom or a (C 1 -C 4) alkyl group; or iii) a monocyclic heterocycle comprising from 1 to 3 heteroatoms selected from oxygen, sulfur or nitrogen, optionally substituted and having from 5 to 7 25 members such as piperazine or piperidine; and which is optionally substituted, in particular with one or more aryl groups, aryl such as phenyl, or with an amino acid such as phenylalanine; m (B) wherein: ## STR2 ## wherein R (5) (x) (p), q, r, s, t and u are 0 or 1; - x is an integer inclusive between 1 and 20, especially between 1 and 10; M is an integer inclusive between 1 and 4, and n is an integer from 1 to 3,

R'1, R'2, R'3, R'4 and R'5, which are identical or different, represent: i) the same groups as R1, R2 and R3 as defined above, ii) or a siloxane group trisubstituted RaRbRcSi-O- with Ra, Rb and Rc, identical or different, representing the same groups as R ,, R2 and R3 as defined above, iii) or a group R'aR'bR'cSiùOiSi (R'd) ( R'e) ùALK "ù, with ALK" being as defined for ALK previously and R'a, R'b, R ',, R'd and R'e, identical or different, representing: - an atom of hydrogen, a hydroxy group, a (C 1 -C 4) alkoxy group, a (C 1 -C 4) alkyl group, or a group R "aR" bR "c SiO 0, with R" b and R the same or different , represent a hydrogen atom, or a (C 1 -C 4) alkyl group;

- ALK and ALK ', identical or different, represents a group as defined for ALK previously; X and X ', which are identical or different, represent: i) a bond 6, ii) a heteroatom such as oxygen or a group NR with R representing a hydrogen atom or a (C 1 -C 4) alkyl group; Particularly, in formula (B): - X does not represent a bond when s is zero; - when m is 1, then p, q and r are 1, - when m is 2, then p is 0, q and r are 1, 30 - when m is 3, then p and q are 0 and r is 1, when m is 4, then p, q, and r is 0, when n is 1, then t and u are 1, when n is 2, then t is 1 and u is 0, and when n is 3 then t and q are 0, 40 Si x "Si X" Si / X "R '(\ X" Si (C) R 3 formulas (C) and (D) in which:

X, X 'and X ", identical or different, preferably identical, represent the same atoms or groups as X or X' defined above, particularly X, X 'and X" are identical and more particularly X, X' and X "; represent an oxygen atom;

- R ', R'4, and R ", R" 4, identical or different, are such that R', R'4 defined above, more particularly R ', R'4 and R ", R 4 are (C 1 -C 4) alkyl, (C 1 -C 4) alkoxy, (C 5 -C 7) cycloalkyl, (C 5 -C 7) cycloalkyloxy, HS- (C 1 -C 20) alkyl, HS- (CIC 2 O) alkoxy, aryl such as phenyl, aryloxy such as phenoxy, RaRbRcSi-O- with Ra, Rb and Rb, identical or different, representing a hydrogen atom, or a (Ci-C4) alkyl group;

it being understood that in formulas (C) and (D) at least one SH function is on one of the groups R ', R'4, and R ", R" 4.

Preferably the silicon compounds with thiol function (s) according to the invention are those of formula (A).

As silicon compounds with thiol function (s) that may be used according to the invention, the following compounds may be mentioned: X "R" R X X X Si X X X Si X X X X Si X

Where SiMe 3 OH 1 Mei Si-CH 2 CH 2 CH 2 -CH Si Si (CH 2) 3 SiH 1 OMe OH Where SiMe 3 (2) HS 1 (CH 2) 3 SiOO Si SiCH 2 CH 2 CH 2 CH 3 SiO 2 SiSiMe 3 where Si (CH 2) Wherein Si (CH 2) 3 SiH 1 OMe (1) 1927406-68-6 918547-93-0 Silanediol, 1- (3-mercaptopropyl) -1-methoxy or MeOH (OH) 2 CH 2) wherein CH 3 (4) 914384-39-7 914384-36-4 1-Hexadecanethol, 16- (trimethoxysilyl) -1-nonanethol, 9- (trimethoxysilyl) ## STR5 ## wherein: ## STR1 ## in which: ## STR5 ## 1-Oxo-3- (trimethylsilyl) propyl] homocysteinyl-Ethanethiol, 1 - [(2-mercaptoethyl) dimethylsilyl] Me 2 MeH 3 SiH 2 CH 2 CH 2 SiO 2 CH 2 CH 2 O -SH 2 CH 2 CH 2 O 2 And Et (7) (8) 912960-51-1 894393-82-9 Ethanethiol, 2,2 '- (dimethylsilylene) bis-Ethanethiol, 2- (ethoxymethoxypropylsilyl) -OmMuMi MeCH2. Si-CH2 CH2 CH2 CH MeCH2 ° -If CH2ùCH2ùCH2 --- --- OH Where (CH) Me (9) (10) 892125-06-3 892125-05-2 1-Propanethiol, 3 - (ethyldimethoxysilyl) -1-propanethiol, 3- (diethylmethoxysilyl) - Where And Where Me? C.H2 ---- Siù CH 2ù CH2 ù CH2 --- SH Etù 0 --- Siù CH 2ù CH2 ù CH 2 --- SE Where And Me (11) (12) 892125-04-1 880107-28-8 1 -Propanethiol, 3- (diethoxyethylsilyl) -1-propanethiol, 3- (ethoxydimethoxysilyl) - WhereAnd Where Me (CH2) nO-S, CH2CH2O0E2 -SH-PriO Si-CH: ## STR2 ## 1-Propanethiol, 3- [bis (dodecyloxy) ethoxysilyl] -1-propanethiol, ## STR2 ## 3- [ethoxybis (1-methylethoxy) silyl] - and Where Me Me (CH 2) n = 3 + 1 = CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH (CH 2) Where Me (15) (16) 880107-31-3 877593-17-4 1-Propanethiol, 3 - [ethoxyb (hexadecyloxy) silyl] -1-undecanethlol, 11- (trimethoxysilyl) - where Me Me Where CH2 (CH2) 3 CH2-S3 ## STR5 ## 1-Pentanethiol, 5- (trimethoxysilyl) -1,3-bioxa-2-silacyclohexane. 2-propanethiol, 2- [3-ethoxy-4,4,6-tri-methyl-1-SiSiSH] [M] O] Si-C-yl-CH 2 SiOCH 2 -CH 2 -CH 2 -H-Me (20) (19) 875121 -69-0 867218-46-0 1-Propanethiol, 3 - [[2- (trimethoxysilyl) ethyl] thio] -1-propanethiol, 3,3 ', 3,3', 3 "3" "" 3 3 3 [Silanetetrayltetrakis (3,1-propanediylsi lanetetrayl)] dodecakis [Pr-n SiSi (22) 4 n-Prù 0-SiùCH 2 · CH 2 · CH 2 · C · H 2 SH - I SHZ where P r - n (21) 869795-65-3 867218-44-8 1-Butanethiol, 4- (tripropoxysilyl) -1-propanethiol, 3,3 3 "3" '3 "" 3 ,,,,, 3 ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 3H (23) 1H-CH 2 O (CH 2 Cl 2) CH 2 Cl 2 (24) 867218-42-6 856785-40-5 Ethanethioic acid, S, S '- [(3-mercaptopropyl) methylsilylene] di-3.1 -propanediyl ester 3-Oxa-2,4-disilahex ane-1-thiol, 4,4-diethyl-2,2-dimethyl-MeOH. ## STR1 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## 37-9 Hexadecanamide, 16-mercapto-N- [3- (trimethoxysilyl) propyl] -propanamide, 3-mercapto-N- [3 - (trimethoxysilyl) propyl] - (CH2) 13Me where (CH2) 13Me EE Meù (CH 2) ??????? ????? ????? ??????? ??????? ?????? ????? ????? ????? ??????? (27) (28) 813279-76-4 813279-55-9 1-Propanethiol, 3-1-Propanethiol, 3- [dimethyl (tetradecyloxy) silyl] - [(hexadecyloxy) (octadecyloxy) (tetradecyloxy) ifyl] - Where (CH2) Me (CH2) Me Me (CH2) ## STR1 ## (CH 2) Me (29) (30) 813279-04-8 813278-95-4 1-Propanethiol, 3- [tris (tetradecyloxy) silyl] -1-propanethiol, 3- [bis (dodecyloxy) (tetradecyloxy) silyl] ## STR2 ## where SiSi + SiCi SiOO SiOO SiiO / Si, where SiO Si Si SiO 2 SiO 2 SiH 2 SiCH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (31) Si 804560-94-9 607388-75-0 Pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxanepropanethiol, 2,4,6,8-Cyclotetrasiloxanetetraethanethiol, 3,5,7,9,11,13 , 15-heptacyclohexyl-2,4,6,8-tetramethyl-Bu2n (CH2) 4Me3e Mei SiO2-CH2CH2CH2CH2SH Me1 (CH2) 4 SiOCH2CH2CH2CH2uSH 0uBu-n where (CH2) ) Me (33) (34) 765279-63-8 765279-61-6 1-Propanethiol, 3- (dib) utoxymethylsilyl) 1-propanethiol, 3 - [tris (pentyloxy) silyl] -OH HS (CH 2) 3 SiO 2 Si-CH 2 CH 2 CH 2 ---: SH me 1 03 ## STR1 ## wherein (36) (35) 757930-74-8 740021-95-8 1,1,3,3-bisiloxanetetrol, 1,3-bis (3) -mercaptopropyl) - Ethanethiol, 2 - [[2- (trimethylsilyl) ethyl] amino] - MeOHCH2uCH2UOMe where CH 2 OH 2 ## STR5 ## where ## STR2 ## (37) 721959-92-8 648416-85-7 1-Aza-3-silacyclopentane-5-carboxylic acid, 1 - [(2R) -3-mercapto-2-ethanethiol, 2- [tris (2-methoxyethoxy) ) silyl] -methyl-1-oxopropyl] -3-dimethyl-, (5R) - -EtH 2 CH 2 CH 2 where ## STR2 ## 3 ", 3" -silanetetrayltetrakis- me Where and when? S (CH2) CH2? CH2? NH? CH2? CH2? SH t Se (41) Me? (CH2) n? CH2? CH2? CH2? 42) 801172-50-9 499137-37-0 Ethanethiol, 2 - [[3- (trimethylsilyl) propyl] amino] -1-propanethiol, 3- [ethoxybis (tetradecyloxy) silyl] -Ot and i-Bu Me (CHZ) 13iii ~ vi --- ~ L "fi2uCH2uL" K2 ~ --- 'F O-And (43) Nc ... rx ~ ùCH2ùCHZ ~ sil o \ Bu-i if o \ / siùo \ I / o ## STR5 ## wherein 1 is 1-propanethiol, 3 - [diethoxy (tetradecyloxy) silyl] -Pentacyclo [9.5.1.13,9.15,15.17,13] octasilo xaneprop dill iol, 3,5,7,9,11,13,15-heptakis (2-methylpropyl) -OH where M = CH 2 CH 2 CH 2 CH 2 -CH MSCH 2 CH 2 CH 2 CH 2 CH 2 CH 2 Me (40) 479092-76-7 443863-57-8 1,1-bisiloxanediol, 1- (3-mercaptopropyl) -3,3,3-trimethyl-1-propanethiol, 3- (diethoxyoctadecylsilyl) Wherein MS - CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 4 - [(3-mercaptopropyl) dimethoxysilyl] -1-propanethiol, 3- (dimethoxyoctylsilyl) -methylmethylcellulose, (3- (dimethoxyoctylsilyl) -methyl) -CH 2 CH 2 CH 2 SiCH 2 ## STR13 ## 1-Propanethiol, 3- (dimethoxyoctadecylsilyl) -1-octanethiol, 8- (trimethoxysilyl) -where and Cr CrMe Where? (CH 2) 6 CH 2 -CH 1 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (CH 2) CH 2 CH 2 CH 2 CH 2 (CH 2) CH 2 CH 2 CH 2 CH 2 (CH 2) CH 2 CH 2 CH 2 (CH 2) CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (triethoxysilyl) -1-propanethiol, 3- [dimethoxy (1-methylpropoxy) if lyl] - Where Me Me Me 0 --- Si --- CH2ùCH2ùCH2 --- SH MeùCH2, --- Si --- CH2ù (CH2) 6ùCH2 --- SH 1 1 Where Me MeCHh where CHiEt (54) And Me (53) 416857-08-4 406946-39-2 1-Propanethiol, 3- [methoxybis (1-methylpropoxy) silyl] 1-octanethiol, 8- (ethyldimethoxysilyl) where Me = 4-O-Cl 2 - SEE S3 ~ li. ## STR5 ## wherein (55) MeOH, CH 2 and Me (56), 406946-38-1 374573-02-1 1-Butanethiol, 4- (dimethoxymethylsilyl) 1 -Propanethiol, 3- [methylbis (1-methylpropoxy) if lyl] Me 0ùMe where CHùEt C- SiùCH2ùCH2ù0H2- °° .SH I 1 MeùCH where CHùEt II and Me (57) MeùÛù Siù CHùCH2ùCH 2ù NHù CH2ù CH2ù SùCH 2ùCH2- 1-Propanethiol, 3- [tris (1-methylpropoxy) silyl] 2- {2- [3- (trimethoxysilyl) propylamino} ethylthio] 1-Propanethiol, 3- [tris (1-methylpropoxy) silyl] -2- [3- (trimethoxysilyl) propylamino} ethylthio] ethanethi ol or Me CHcHfW. ## EQU1 ## M 349113-11-7 343317-71-5 Ethanethiol, 2 - [[3- (trimethoxysilyl) propyl] thio] 2,8,9-trioxa-5-aza-1-silabicyclo [3.3.3] undecane-1- ethanethiol, 3-methyl-OMe Me Where Me 0 1 1 HSu (CH 2) 3 SiO 2 SiO 2 SiO 2 CH 2 CH 2 CH 2 CH 2 H 2 O 1 MeOH (61) O 3 SiO 2 CH 2 CH 2 CH 2 O 3 (SEQ ID NO: 62) 326872-58 1-Propanethiol, 3,3 '- (1,1,5,5-tetramethoxy-3,3-dimethyl-1,5-1-propanethiol, 3- (methyl-1-trisiloxanediyl) bis) Where SiHMe 2 HS --CH; SiHùO Me ie I SiHMe2 WhereSiùCH2ùCH2ùSiùOiSiHMe2 II Me WhereSiHMe2 \ / si / Oyo SiùO I / WhereSiViOi ùs (63) \ oô Si (64) 322476-82-4 277753-65-8 1-Propanethiol, 3- [ 3- [2- [1,1-bis [(dimethylsilyl) oxy] -3,3-pentacyclo [9.5.1.13,9.15,15.17, 13] octasiloxaneetha dimethyldisiloxanyl] ethyl] -1,1-bis [[[2- [1,1-bis [(dimethylsilyl) oxy] -nethiol, 3,5,7,9,11,13,15-heptacyclopentyl-3 , 3-dimethyldisiloxanyl] ethyl] dimethylsilyl] oxy] -3,3-dimethyldisiloxanyl] Me WhereSiMe3 CHiSiuCH2uCH2uSiuSiSiMe3 Fife. Sio CH2u (CH2) 8u2H2 °°° -SH II ~~ Me3SiuO Me Pkp Me WhereSiMe3 (66 ) Me3SiùOuSiùCH2ùCH2ùSiùt7- °° ti iùùC112ùCH2ùCH2 .. HII Me WhereSiMe3 Me3SiùO Me EE II CùSiùCH2ùCH2ùSiùOiSiMe3 II Me WhereSiMe3 (65) 290300-28-6 267893-36-7 1-Propanethiol, 3- [1,1-bis [[dimethyl [2- [3,3,3-trimethyl-1,1-silanediol, (10-mercaptodecyl) methylbis [(trimethylsilyl) oxy] disiloxanyl] ethyl] silyl] oxy] -3,3-dimethyl-3- [2] [3,3,3-trimethyl-1,1-bis [(trimethylsilyl) oxy] disiloxanyl] ethyl] disiloxanyl] Me-Me: C-Me / Me / Me Where CH 2 CH 2 / C ## STR2 ## , 4,6,6,8,8-heptamethyl-1-propanethiol, 3- (eth where And where SiHMe 2 Where? 217824-83-4 216107-81-2 Triethoxy (3 - ((2- (2-mercaptoethylthio) ethyl) amino) propyl) silane 1-Propanethiol, 3- [1,1-bis [(dimethylsilyl) oxy] -3 , 3-dimethyldisiloxanyl] -Me3SiùO MeHiùEH2ùCH2ùCS39 1 MeùSi-oùSiùCH 2ùCH2ùCH2 SH o / I ~ ùo \ o Me3SiùO Ii 0 4siùo (72) WhereSiù (CH2) 3ùOH (I) (71) / / sl o 0 o if 212370-02-0 209454-40-0 1-Propanol, 3- [3- (3-mercaptopropyl) -1,1,3,5,7,7,7-heptamethyl-5-pentacyclo [ 9.5.1.13,9. 15,15,17,13] octasiloxaneprop [(trimethylsilyl) oxy] tetrasiloxanyl] anethiol, 3,5,7,9,11,13,15-heptacyclopentyl WhereBu-t Fife Ph t-BuùO °°° Si-°° CH2ùCH2 ° ## STR2 ## [(tris (1,1-dimethylethoxy) silyl] benzenepentanethiol, - (trimethylsilyl) -III Where And n-BuO 2 O -CH 2 CH 2 CH 2 Si 3 n-BuO 2 O -CH 2 CH 2 CH 2 O -SH Where Me Where Bu-n (75) (76) 182741-07-7 182740-73-4 1-Propanethiol, 3- (butoxydimethoxysilyl) -1-Propanethiol, 3- (dibutoxyethoxysilyl) - Where Me Where And n -Buù0ùSi-- ° CH2ùCH2ùCH? -H n-BuùO- °° 'CEE2ùCH2ùCH: 2' ° SE3 Where And Where And (77) (78) 182740-71-2 182740-70-1 1-Propanethiol, 3- (butoxyethoxymethoxysilyl - 1-Propanethiol, 3- (butoxydiethoxysilyl) - Where Me Where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## OMe (79) (80) 1 182740-59-6 178317-17-4 1-Propanethiol, 3- (dibutoxymethoxysilyl) -I-P Ropanethiol, 3- [tris (methoxymethoxy) silyl] ## STR2 ## wherein Me-Si-CH 2 (CH 2) 16 CH 2 ## STR2 ## wherein R (CH 2) 16 CH 2 - Si Me (Me) (81) (82) 170573-76-9 170573-75-8 1-Octadecanethiol, 18- (methoxydimethylsilyl) -1-octadecanethiol, 18- (trimethoxysilyl) - where And Where: ## STR1 ## where ## STR2 ## where ## STR5 ## -73-6 1-Dodecanethiol, 12- (triethoxysilyl) -1-dodecanethiol, 12- (trimethoxysilyl) -Oremal or SiO 2 SiCH 2 CH 2 -C 2 O (EtO) (85) (86) n-Pris CH 2 CH 2SE 170573- 67-8 170573-66-7 1-Propanethiol, 3 - [(cyclohexyloxy) dimethylsilyl] -1-propanethiol, 3 - (ethoxymethoxypropoxysilyl) - where Me and ## STR2 ## n-BuùCHùCH2ù0 (87) HS - 'C; rirù CH 2 --- B I --- Where CH2 n-BuùCHùCH2ùJ EtùCHùBu-n 1 And (88) 170573-65-6 170573-64-5 Ethanethiol, 2- (ethoxydimethoxysilyl ethanethiol, 2- [tris [(2-ethylhexyl) oxy] silyl] Me 3 SiO 3 Mea Si (Si CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 SH (90) Meù CH where CHù and II and Me (89) 170573-63-4 162396-04-5 Ethanethiol 2- [tris (1-methylpropoxy) silyl] -1-propanethiol, 3- [3,3,3-trimethyl-1,1-bis [(tri methylsilyl) oxy] disiloxanyl] Me me H 5 (CH 2) 3 I 2 MeùSiù C} - ~ 8i --- CH ^ ùCHZùCFtz --- ~ 13 HGù (CHy) 3. ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR1 ## where ## STR2 ## where ## STR2 ## ## STR1 ## where Pentasiloxane, 5- (3-mercaptopropyl) -1,1,1,3,3,5,7,7,9,9,9-Pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxaneocta undecamethyl propanethiol n-Pr HGu (CH2) 3 \ n ## EQU1 ## where ## STR1 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## Where \ I \ / I / O \ SiiiO Pr-n n- Pr I \ / ° WhereSi I \ / / O If o If H5ùCH2ùCHyùCH2 \: _O 2ùCH2ùCHy \ Pr-n Pr-n (93) (94) ) 161678-47-3 161678-46-2 Pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxane-1,7-dipropanethiol, pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxane-1,5- 3 , 5,9,11,13,15-hexapropyl dipropanethiol, 3,7,9,11,13,15-hexapropyl H5 (CH 2) 3 n-Pr i Si n-Pr nP / 51 Pr-n Pr n \ o O \ Si O nP \ ~ Pr-n \ IOS i / $ i- \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ -;. Where SiO0 n-Pr I l \ / ° Where Si IO Si O Si .. where CiyùCH2ùC? 2 \ Pr-n (96) HGùCH2ùCH2ùCH2 \ Pr-n (95) 161678-45-1 161678-44- Pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxaneprop anethiol, 3,5,7,9,11,13,15-heptapropyl pentacyclo [9.5.1.13,9.15,15.17,13] octasiloxane-1,3-dipropanethiol , 5,7,9,11,13,15-hexapropyl-S iMe 3 or t. Me --- Sii CH2u CHyu C..xS ^ '-' ük'S YGt '°°° Siù CH2ù CH 2ù Sù CH 2ù CHy ù Where CH 2ù CE.2 ù SH i.TT E (98) Where S iMe 3 (97) 157530-11-5 156730-90-4 Ethanethiol, 2- [2 - [[2- [1,3,3,3-tetramethyl-1- (3-mercaptopropyl) methylsilanediol [(tri methylsilyl) oxy] ] isoboxolyl] ethyl] thio] ethoxy] - 1oSiuMe Me where Me Me H2C = CHiSiùCH2 'i --- CH2ùCH2ùCH2 --- SU II ùSiù (CH2) 3ùSh Me Where Me Me Me Siù CH2ù CH2ù CH.j (100) Me (99) 155064-53-2 151535-63-6 1-Propanethiol, 3,3 '- (1,1,3,3,5,5-hexamethyl-1,5-trisiloxanediyl) bis 1 -Propanethiol, 3 - [[(ethenyldimethylsilyl) methyl] dimethoxysilyl] ## STR1 ## wherein M (CH 2) CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (102) 150432-51-2 151484-04-7 Ethanethiol, 2 - [[3- (trimethoxysilyl) propyl] amino] Ethanethiol, 2- (dimethyl-2-propenylsilyl) MeOH and Si2H2H (CH2) 8ii ii2 SH ## STR5 ## where: (Me) (Me) (103) 149991-91-3 149991-90-2 1-Decanethiol, 10-di methoxymethylsilyl) - 1-Hexanethiol, 6- (ethoxydimethylsilyl) - HSù (CH2) 3CH2CH2CH2uCH2u where Me Me SiOOH2u (CH2) 12CH2- ° SH SHiSiSi-0UMe) WhereMe (106) 3 ( 105) 147441-84-7 143099-69-8 1,7-Heptanedithiol, 4 - [(trimethoxysilyl) methyl] - (14-Mercaptotetradecyl) dimethylmethoxysilane Where And Where: Me-O-Si-CH 2 (CH 2) ## STR2 ## where Me (Si) (CH 2) (CH 2) 4 CH 2 -O -SH 0 and Et (107) 143099-68-7 143099-67-6 (6-Mercaptohexyl) methyldiethoxysilane 1-Decanethiol, (trimethoxysilyl) - CH2uSH WhereMe WhereMe 1 SisùCH2 ùCHù C ~ I2 °°° Siù Meù Where O. °°, Me Where Me HS °°° CH 2 ù CHù CH 2ù CH 2 ù SH (109) (110) 142542-17-4 142521-53-7 1,3-Propranedith law, 2 - [(dimethoxymethylsilyl) methyl] 1,4-bimercapto-2- (methyldimethoxysilyl) butane CH 2 SiH WhereMe QiEt 1 1 HS- °° CH2ùCHùCH2- °° If ## STR2 ## ## STR1 ## ## STR2 ##, ## STR2 ##, 1,3-Propanedithiol, 2 - [(trimethoxysilyl) methyl] - 1-Propanethiol, 3- (eth Oxymethylmethylsilyl) - O Me Me Me Meer Me O r: ii2ùCH2ùCI12 Hie It 1 1 1 1 1 II Gù = i HSùCH2ùCùNùCH2ùCHùCH2ùSiù0 - Si ---: 'H2ùCHùCH2ùNùCù0: 32 --- Me` / / 1 Me Me ( 113) Acetamide, N, N '- [(1,1,3,3-tetramethyl-1,3-disiloxanediyl) bis) (Acetamide, N, N' - [(1,1,3,3-tetramethyl-1,3-disiloxanediyl) bis) 2-methyl-3,1-propanediyl) bis [2-mercapto-N-methyl 2,8,9-trioxa-5-aza-1-silabicyclo [3.3.3] undecane-1-propanethiol, 3.7, 10-trimethyl Me 3 SiO 2 Me 2 SiO 2 SiO 2 SiO 2 SiO 2 SiO 2 SiCH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 -15-7 Acetamide, 2-mercapto-N- [2 - [[2-methyl-3- [1,3,3,3-tetramethyl-1-acetamide, 2-mercapto-N- [2 - [[2 3-methyl-3 - [(trimethylsilyl) oxy] disiloxanyl] propyl] amino] ethyl] - [(trimethylsi [1,3,3,5,5,7,7,7-octamethyl-1-yl] oxy] tri loxanyl] propyl] amino] ethy I] -Qfi where Me II 3C --- S = CH 2 CH 2 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 Where Me (117) (1) 18) 136594-91-7 136594-90-6 Silanetriol, (2-mercaptoethyl) -1Hexanethloyl, 6- (trimethoxysilyl) Me Me II where Ac HS (CH 2) SiOCH 2 CH 2 SiO 2 Cl 2 O 4 (CH 2) n -CH 2 -CH 2 -b, Mt 3 -O-. ## STR1 ## wherein Ac (120) 134798-63-3 132808-39-0 1-Octanethiol, 8,8 '- [(1,1,3,3-tetramethyl-1) , 3-disiloxanediyl) bis (2,1-silanediol, (3-mercaptopropyl) methyl-, 0,0-ethanediylthio)] bis diacetate. ## STR5 ## wherein CH 2 CH 2 CH 2 Si 2 SiH 2 I Me (121) III Mei SiiM o SiiSiuSiuChZiSH II Me Me Me Where Siii CX2u ___ I Me (122) 131606-68-3 131110-47-9 3-Mercaptopropylsilanetriol Methanethiol, (1,1,3,3,5 , 5,7,7,9,9,11,11-dodecamethyl-1,11-hexasiloxanediyl) bis Me Me Where Bu-n Phu0 --- S. ~. CH2ùCH2ùCH2 --- 'SH 4ùPh (124) Where siiùMe o Siù (CH2) gùSH III Meù Siù Where siù Mie O --- sz --- xic ~ CH2ù O SiùMe Me Me Me CH2ù CH2 ---' SH 1 Me ( 123) 131089-25-3 130734-03-1 1-Propanethiol, 3,3 '- (1,1,3,5,5,7,7,9,9,11,11-dodecamethyl-1, 11- 1-Propanethiol, 3- (butoxydiphenoxysilyl) hexasiloxanediyl) bis C, where Mg Me Me 1 1 1 SiH 2 CH 2 CH 2 CH 2 -CH 2 CH 2 CH 2 SiO 2 SiO 2 SiCH 2 126) 130734-02-0 124621-48-3 1-Propanethiol, 3- (triphenoxysilyl) -Methanethiol, (1,1,3,3,5,5-hexamethyl-1,5-trisiloxanediyl) bis (U) -CM ùCH2ùCH2 H'H Me Meù0 --- If WhereSiùMe O SiùMe O SiùMe whereSiM33 whereMsiùMe Me Me (127) whereSiùMe MeSiùMe 1 Me Me-ui °Ciùù222222222IIIIIIIIII SH SH SH SH SH SH SH SH SH SH SH SH? 64-0 Silanol, (3-mercaptopropyl) dimethoxy 3,5,7,9,11,13,15-Heptaoxa-2,4,6,8,10,12,14,16-Octasi Lanonadecan-19-Thiol 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16- pentadecamethyl-16 - [(tri methylsilyl) oxy] - N Me Me r O>) Meù I '.---- Siù ## STR2 ## ] octane-1-propanethiol bimethyl-tert-butyl (3-mercaptopropyl) silane-a Me Me 1 H: ---- CH2ùCH2ùCH2 --- Si --- CH2ùPr-n Meù CH ---- Si --- CH2ùCH2ùCH2 --- SH EE Me me (131) (132) 117137-93-6 117137-92-5 Dimethyl-n-butyl (3-mercaptopropyl) silane Dimethyl isopropyl (3-mercaptopropyl) silane 292808ESu 57 C1 - ° - Si CH2uPr ## STR2 ## 117137-90-3 Methyldiphenyl (2-mercaptoethyl) silane bimethyl-n-butyl (2-mercaptoethyl) silane ide HS-2H (133) (134) 117137-91-4 ## STR5 ## mercaptoethyl) silane bimethylphenyl (2-mercaptoethyl) silane me ide M ° ~ ppz CH2ù CH 2 ---- SH Meù CHù Me (138) I ~ ie-- • Si --- CE ~ 2 ù CH 2ù CH2 ù NH I Me MeCHùCH₂ùNHùCH₂ùerg --- SH (137) 116402-39-2 117137-87-8 bimethylisopropyl (2-mercaptoethyl) silane Ethanethiol, 2 - [[2 - [[3- ethylsilyl) propyl] amino] propyl] amino] - OMe Where Me Me 2 (140) = CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 Where ## STR1 ## where ## STR2 ## where ## STR2 ## where ## STR1 ## 3 '- (1,1,3,3-tetramethoxy-1,3-disiloxanediyl) bis-1-propanethiol, pentamethyl-1,9-bis [(tri-1,3,5,7,9-pentasiloxanepentayl) 3,3' , 3 ", 3 ', 3- [1,3,5,7,9-methylsilyl] oxy] -] pentakis [2-methyl-n-ubu-t] ## STR5 ## where B (Me) (141) (14) 113900-02-0 113394-20-0 1-Propanethiol, 3- [tris (1,1-dimethylethoxy) silyl] 1-Propanethiol, 3- [dimethoxy (2-naphthalenyloxy) ifyl] - OMe 0Me ùMe HSù (CH2) 3iSiuOiCH2uCH2uOiCH2uCH2uOiCH2uCH2uCiCH2uCE-: i -Cli (CH2) 6CH2-: H1 WhereMe Meù (CH2) 17 ùO --- ## STR1 ## ## STR13 ## 4-17-5 5,8,11,14-Tetraoxa-4,17-disilapentacosane-1,25-dithiol, 4,4,17,17-1-Propanethiol, 3-tetramethoxy-methoxyb (octadecyloxy) if lyl] -0ùCH2ùPh G! ## STR2 ## wherein ] - Propanenitrile, 3,3,3 "- [[(8-mercaptooctyl) silyl] idyne] tris (oxy)] tris me Cù Ac Meùi '° ° CH° C: i3 2W. Embedded image Ethanethiol, 2 - [(1,1-dimethylethyl) dimethylsilyl] -Silanol, (3-mercaptopropyl) dimethyl- (3-mercaptopropyl) dimethyl ## STR5 ## where CH 2 CH 3 (CH 2) CF 3 (150) 111949-65-6 108217- 09-0 Silanol, ethyl (2-mercaptoethyl) methyl-, O-acetate 1-Propanethiol, 3- [tris (2,2,2-trifluoroethoxy) ifyl] -Ie SiMe 3 or 1 Me-Si CH 2 CH 2 ## STR5 ## ethoxydimethylsilyl) - Me. N (CH2) 3sSH 1 Me35iu0 WhereS: Me HS? (CHy) ## EQU2 ## where Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) 102303-94-6 101538-68-5 Cyclopentasiloxane-2,4,6,8,10-pentapropanethiol, 2,4,6,8,10-1-Aza-4-silabicyclo [2.2.2] octane-4- propanethiol pentakis [(trimethylsilyl) oxy] -Me Me / N \ CH 2-°°, SE 1 if (156) ## STR1 ## wherein CH 2 CH 2 CH 2 CH 2 SiM 2 SiO 2 (CH 2) CH 2 CH 2 CH 2 CH 2 Me 2 (155) 1-Propanethiol, 101538-67 4 101508-59-2 1-Aza-4-silabicyclo [2.2.2] octane-4-ethanethiol 3- [3- (3-aminopropyl) -1,1,3,3-tetramethyl di-loxanyl] -ouMe ## EQU1 ## where: ## STR2 ## (4) Mercaptobutyltrimethoxysilane Ethanethiol, 2- (diethoxymethylsilyl) - (CH2) 7Me where (CH2) ) Mei Mei (CH2) 7uC --- • Si --- CHäùCH2ùCH2 --- SH Meù (CH2) 9ùC) °° -Si °°° E'.1 = t2ùCH2ùC.E: 2 °° -SI 3 Where (CH2) MeO (CH2) Me (159) (160) 94291-66-4 93777-94-7 1-Propanethiol, 3- [tris (octyloxy) silyl] -1 -Propanethiol, 3- [tris (decyloxy) silyl] -Me Me Meil SiO (Si) (CH 2) 4 SiH 1 IIIO SiiM Me Meil-Lita Ota Me (162) Where Is Me Me MeSi Me (CH2) 3? C132 ° - 1-Butanethiol, 4,4 '- (1,1,3,3,5,5,7,7,9,9,11,11) , 13,13-Tetradecamethyl-1-propanethiol, 3- (methoxy-1, 1, 13-heptasiloxanediyl) bis naphthalenylphenylsilyl) -, (+) - Me Me Si Si MeM HSi (CH 2) 8 SiO 2 SiC 2 SiCH 2 (CH2) 6CH2, °° -3H1 1 Me Me MeSiù Me (163) 1 a --- Si si (CH 2) 4 SiH Me Me (CH 2) 3 CH 2 SH (164) 90054-32-3 90067-82-6 1-Octanethiol, 8,8 '- (1,1,3,3-tetramethyl-1,3-disiloxanediyl) bis-1-butanethiol, 4,4' - (1,1,3,3 , 5,5,7,7-octamethyl-1,7-tetrasiloxanediyl) bis-Me Ms 1 1 1 HS 1 (CH 2) 4 SiO 2 SiOCH 2 CH 2 CH 2 CH 2 -O-CH 3 CH 2 CH 2 CH 2 --- Si --- ## STR5 ## 3-tetramethyl-1,3-disiloxanediyl) bis-1-pentanethiol, 5,5 '- (dimethylsilylene) bis-M-MeH 2 C = C 3 -C ## STR5 ## wherein Me (167) (168) 88820-73-9 88820-68-2 1-Propanethiol, 3- (ethenyldimethylsilyl) -1-propanethiol, 3- (dimethoxy-2-propenylsilyl) where CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 O Me (170) 87994-63-6 88340-09-4 3 - [Tris [2- (2-methoxyethoxy) ethoxy] silyl] -1-propanethiol 1-Propanethiol, 3- (ethoxydiethylsilyl) -me E : E2ùMe tvie- °° -Si °° -CH2ùCH2ùCH2ùSùCH2ùCH2 °° - S- Meù ::: M2 ---- = i --- C.M2ùCH2ùSùCH2ùC: E32 --- E3 meCH2ùMe (171) (172) 85522- 13-0 85522-11-8 Ethanethiol, 2 - [[3- (trimethylsilyl) propyl] thio] -ethanethiol, 2 - [[2- (triethylsilyl) ethyl] thio] - CH 2 CH 2 0 OMe d H2C = CH- °° Si SiCH2ùCH2 SH Me EùCH2ùCH2ùO- °° si Si ° °°° C.Fi2ùCH2ùCpt2 °° -Sm Where CH 2 ù CH 2 ù OMe (173) (174) 85465-31-2 85080-05-3 Ethanethiol, 2- (ethenyldimethylsilyl) 3- [Tris (2-me) thoxyethoxy) silyl] -1-propanethiol 'Ph MeO (175) (176) 77186-25-5 77186-24-4 1-Propanethiol, 3- (1-naphthalenylphenoxyphenylsilyl) -, (-) - 1-propanethiol, 3- [(4-methoxyphenoxy) -1-naphthalenylphenylsilyl] -, (+) - (CH 2) 3 MeO (177) 8i ~~ SH HG / 5iuPh S (178) 77186-23-3 77186-22-2 (-) -1-Propanethiol, 3- (methyl-1-naphthalenylphenylsilyl) -, (+) - 1-propanethiol, naphthalenylphenylsilyl) -, 3- (methyl-1-CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 S · CH 2 -methyl] -1 S; ## EQU2 ## -silabicyclo [3.3.3] undecane, ethanethiol deriv Methanethiol, [[2- (3,7,10-trimethyl-2,8,9-trioxa-5-aza-1-silabicyclo [3.3.3] undec-1- yl) ethyl] thio] - Where CH2 ù CH2ù OEt Me HSù (CH2) 3 \ (CH2) 3ùSH EtOùCH2ùCH2ù {) Si.ù (: ') q2ù CH2ùCH2 --- ~ 4E3 \ / WhereSi Where CH2 ù CH2ù OEt If U Me (181) Me 'si` ~ P, 3e cs2ùCH2ùCHy- ° -ss HSù (CH2) 3 SiùU (182) 67724-41-8 66607-96-3 1-Propanethiol, 3- [tris (2-ethoxyethoxy) silyl ] - 2,4,6,8-Tetrakis (3-mer captopropyl) -2,4,6,8-tetramethylcyclotetrasiloxane Me Me Me Me SiMe 3 Me 1 1 SiSMe (CH2) I Where Si (CH2) ) 3sSH Where SiMe 3 3sSH WhereSiSiSiSiSiSiSiSiSiSiSiSiSiSi II 1 1 1 1 1 WhereSiSiM (CH2) 3sSi (CH2) 3sSiSiSiSiS Me Me Me Me ds - Sii CH2uCHZu0112 - SH Mei Si- °° CH ## STR3 ## where Si (R 1) SiSi (CH 2) 3 SiHi where M Si (R 2) Si (Si) where Si (Si) R 3 SiO 3 (184) 66376-27-0 66376-29-2 1-Propanethiol, 3,3 ', 3,3', 3- [1,3,5,7,9-pentamethyl-1-1-propanethiol, 3, 3 ', 3 ", 3', 3- [1,3,5,7,9 - [(tridecamethylhexasiloxanyl) oxy] -9 - [(trimethylsilyl) oxy] -1,3,5,7,9-pentamethyl 1,9-bis [(trimethylsilyl) oxy] -pentasiloxanepentayl] pentakis-1,3,5,7,9-pentasiloxanepentayl] pentakis-Me 2 Si 5 Si 3 O 5 ii 2 MeE 0iSiùCH2ùSH fEi ~ CS32 ù - C32ù O- = Me I``! I I I: ## EQU1 ## where SiMe 3 Me 3 SiO 2 Me 2 SiO 2 Mei SiO 2 MeiSiO Me MeSiOO 1 Me (185) 66376-28-1 66573-38-4 Ethanethiol, 2- (1) ethylmethoxyphenylsilyl) - Methaneth iol, [1,3,5,7,9-pentamethyl-1 - [(tridecamethylhexasi loxanyl) oxy] -9 - [(trimethylsilyl) oxy] -1,3,5,7,9-pentasiloxanepentayl ] pentakis Me: 7p and MeùC * i- °° 'CH2ùCH2ùSùCH2ùCH2- °°' 'SH SHH Et °>.... .CCCCCCCCCCCCCCCCCCCCCCCCCC,,,,,,,,,,,, PTT (Me) (187) Et (188) 63823-10-9 63392-36-9 2-Mercaptoethyl 2- (trimethoxysilyl) ethyl sulfite 5-Mercaptopentyltriethoxysilane ## STR2 ## wherein (CH 2) CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 CH 2 CH 3 CH 2 CH 3 CH 2 CH 3 CH 2 CH 2 CH 3 CH 2 CH 3 CH 2 CH 3 CH 2 CH 3 O 5 -mercapto-N- [2 - [(6-mercapto-1-4-mercaptobutylmethyldiethoxysilane oxohexyl) amino] ethyl] -N- [2 - [(6-mercapto-1-oxohexyl) [3- (tri methoxysilyl)] propyl] friend no] ethyl] - Where {:( O ùCM2 ## STR1 ## where: ## STR2 ## where: ## STR2 ## 9-Trioxa-5-aza-1-silabicyclo [3.3.3] undecane-1-ethanethiol Hexanamide, 6-mercapto-N- [3- (triethoxysilyl) propyl] - WherePr-O Pr-n n- Prù C ' Where: Pr-n (194) i-Pru + ---> i -C.H2uCH2uCH2 ---- SH Where Pr-i (193) 58505-63-8 58495- 78-6 3- (Triisopropoxysilyl) -1-propanethiol; 3- (2-mercaptoethyl) tripropoxysilane; 2- Mercaptopropyltriisopropoxysilane (Tripropoxysilyl) ethanethiol Where Pr -n Where And n- Prù O '°°° Siù CH 2ù CH2ù CH2 ---- SH Where O- °°° Siù CH2ù CH2ù0ù CH2ù CH2 ù SH Where Pr -n Where And (196) (195) 58495-77-5 57765-44-3 3- (Tripropoxysilyl) -1-propanethiol; Tripropoxy mercaptopropyl Ethanethiol, 2- [2- (triethoxysilyl) ethoxy] -silane wherein M is SiH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH (CH 3) 41-0 57765-40-9 -mercaptopropyl) methoxysilane OTris (Bis (-mercaptopropyl) dimethoxysilane) and Et (4) and Me (CH 2) n -CH 2 -CH 2 CH 2 CH 2 -CH Me (CH 2) 7 ## STR5 ## where 1 (propoxy) -2- (methoxy) -1-propanethiol, 3- [ethoxybis] -1-propanethiol, 3- [ethoxybis] (octyloxy) silyl] - C: X2uC: E3.2 ---- SM Me EtùCH2ùSi °° -CH2ùEt / Me CH2ùEt Me (201) \ Where sii si' "1 \ / s \ / si \ 'ri2ùCHyùCHyù ~: H2 Mehan (202) 51725-05-4 49778-27-0 Ethanethiol, 2- (tripropylsilyl) -Cyclotetrasiloxanebutanethiol, 2,4,4,6,6,8,8-heptamethyl-2,4eor and 3H2C = CHiCH2 .i °°° CH2ùCH2ùCi32-- 'nia; Etu0 ---': i °° -C: 32ù (CH2) 8ùCE32 '°° -SE3 Cù And (203) (204) 49592-52-1 45258-07- 1-Propanethiol, 3- (dimethyl-2-propenylsilyl) -10-Mercaptodecyltrie thoxysilane wherein Pr-nCiAcAc 3n-PruO Siu0E2u (CH2) 4CH2 °°° SH AcuOuSi °° CH2CH2CH2-SH P3 Pr-nAcAc (205) (206) 45241-40-5 45189-99- 1-Hexanethiol, 6- (tripropoxysilyl) -Silanetriol, (3-mercaptopropyl) -, 0,0,0-triacetate wherein M 1 -O 2 -CH 2 OH (CH 2) n -CH 2 CH 2 CH 2 CH 2 CH 2 SiH 2 O-Bu (N) (207) (208) 45161-79-3 42169-84-6 1-Octanethiol, 8- (dimethoxymethylsilyl) -3- (tributoxysilyl) -1-propanethiol; 3-Mercaptopropyltri butoxysi cane me Where SiMe 3 me 1 SiOiSiùCH2 °°° EH MeiSiùC12ùCH2ùCH2ùCH2 °°° .SH me WhereSiMe3 mei, (209) (210) 41919-25-9 41919-23-7 Tris (trimethylsiloxy) silylmethanethiol 4- (trimethylsilyl) butanethiol Wherein Where? SiMe3 Etu0 --- Si-CH2uCH2uSuCH2uCY: 2 EH MeiSiu1: 112ùCH2ù0732 SH Where And me (211) (212) 40762-29-6 37394-13-1 3-Thia-5- mercaptopentyltriethoxysilane 3-Mercaptopropylpentamethyldisiloxane eOutEi HSu (CH2) 7 ùCH2u Si --- CH2ù (CH2) Wherein HMg, Siu EEC ~ 32 ù (CH2) ùCH3 (3H EI) Ide (213) (214) 32427-96-6 32427-95-5 1-Octanethiol, 8,8 '- (ethoxymethylsilylene) di- (8-mercaptooctyl) dimethylethoxysilane; 8- (Ethoxydimethylsilyl) -1-octanethiol ùMe · H2 · CH2 · C112 °° HE PXe- °. Where: ## STR2 ## , 9-Trioxa-5-aza-1-silabicyclo [3.3.3] undecane-1-propanethiol or SiMe 3 Ph phMoMi 2 O 2 CH 2 CH 2 CH 2 Cl 2 SiO 3 SiMe 3 O o (217) Ph, if, ## STR5 ## wherein: ## STR2 ## 3-tetramethyl-1-cyclotrisiloxane ethanethol, 2-methyl-4,4,6,6 - [(trimethylsilyl) oxy] disiloxanyl] -tetraphenyl Me me MeSi SiMM Si SiM Si SiCHiCH2. ## STR1 ## wherein: cyclotrisiloxane ethanethiol, 2,4,4,6,6-penramethyl-3-oxa-2, 4-disilaheptane-7-thiol, 2,2,4,6-tetramethyl-4- (trimethylsiloxy) -methyl-2- (CH 2) n -CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2; ## STR2 ## wherein: ## STR2 ## where ## STR2 ## where ## STR2 ## - [[3- (trimethylsilyl) propyl] amino] propyl] amino] -, Ethanethiol, 2 - [[2 - [[3-dihydrochloride (trimethylsilyl) propyl] amino] ethyl] amino] - dihydrochloride Meù 0 Me me Meù Where ## STR1 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## [2 - [[3- (dimethoxymethylsilyl) -2-ethanethiol, 2 - [[2-methylpropyl] amino] ethyl] amino] - [[(trimethylsilyl) methyl] amino] ethyl] amino] -, dihydrochloride me / CH 2 ## STR2 ## wherein: ## STR1 ## ## STR10 ## 1-Piperazineethanethiol, 4- [3- (trimethylsilyl) propyl] -1-piperazineethanethiol, 4 - [(trimethylsilyl) methyl] -1 me 1 ## STR5 ## wherein CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH (227) (228) 20494-07-9 18412-66-3 Ethanethiol 2 [[3 - [[3- (trimethylsilyl) propyl] amino] propyl] amino] -1-propanethiol, 3,3 '- (methylphenylsilylene) dimethylamine, ## STR2 ## ## STR5 ## wherein (2,29) (230) 20494-05-7 20494-04-6 Ethanethiol, 2 - [[3 - [[2- (2)) trimethylsilyl) ethyl] amino] propyl] amino] ethanethiol, 2 - [[2 - [[2- (triethylmethyl) ethyl] amino] ethyl] amino Me-Si-CH 2 uNH ( CH2) 3iNHiCH2uCH2-SH CH2iMi HSiCH2uCH2uCif2 --- ~: --- ÿH2uCH2u, ÿH2 sm, (231) H2uMe (232) 20494-03-5 18723-04-1 Ethanethiol, 2 - [[3 - [ (trimethylsilyl) methyl] amino] propyl] amino] -Bis (3-mercaptopropyl) diethylsilane PX CùEt Me --- S ## STR1 ## wherein: ## STR2 ## wherein: ## STR2 ## [(trimethylsilyl) methyl] amino] ethyl] amino] -1-propaneth-3- (diethoxyphenylsilyl) me Me ° ° Si Si°CH2ùCH2ùCH2ùNHùCH2ùCH2ùNHùCH2ùCH2- °° SH1 MeOH-CH2ùCHùCH2ùSiùMe (235) 2e (236) 20494-06-8 18395-50-1 Ethanethiol, 2 - [[2- [[3- (trimethylsilyl) propyl] amino] ethyl] amino] -1-propanethiol, 2-methyl-3- (trimethylsilyl) Me 2 CH 2 ## STR5 ## wherein (ethyldimethylsilyl) -2- (triethylsilyl) ethanethiol, where ## STR2 ## Etu0 --- SiùCH2ùCY2 SH me. Et (239) (240) 18236-27-6 18236-15-2 1-Propanethiol, 3- (dimethylpropylsilyl) -2- (triethoxysilyl) ethyl mercaptan Me Me Me Me Me Siu Sii CH2 ## STR3 ## where: ## STR2 ## [(Trimethylsiloxy) dimethylsilyl] methanethiol 1,3-13is (mercaptomethyl) -1,1,3,3-tetramethyldisiloxane: ## STR1 ## ## STR2 ## ## STR3 ## (2- (trimethylsilyl) ethanethiol Ethanethiol, 2- [methyl] 3- (trimethoxysiline), ## STR5 ## lyl) propyl] ami # 1 - 2l c, S '-' Cë2ùCHyùNHùCHyùC 2 -. ^ •: ~. Me ~ me --- ~ :::, 2, ùCH2ùCH2ùNHùCH2ùCH2 - 'S N.e. 1 HCl HC1 (245) (246) 18107-11-4 18107-10-3 Ethanethiol, 2 - [[2- (trimethylsilyl) ethyl] amino] -, hydrochloride Ethanethiol, 2 - [[3- (trimethylsilyl) propyl] ] amino] -, hydrochloride Me Me Wed Me Me 1 1 1 1 HSuCHyùSiùOùSiùOùSiùOùSiùOO 1 1 1 1 MeùSiùOùSùù0-- 1 Me HSù CH2ù CH2ù Sù CHùù Siù where 3i °° • CH2ùSùCH Me Me Me Phè 0ù SiùMe Where siùMe I 1 1 1 1 Tue: Me (S): (Me) Me (S) + 1 (2) / (2) (2) Where does Me2 MeS Me Me MeSiùOo1 Where Me Me Me Me 1 MeiHiHiHiSiuSiuSiuOiSiuOiSiuOi 1 1 1 Me me Me (247) 18017-03-3 18001-53-1 6-Oxa-3,9-dithia-5,7-disiladecane-1,11-dithiol, 5,5,7,7-tetramethyl-methanethiol, [(phenylsilasilylidyne) tris [ oxy (dodecamethylhexasiloxanylene)]] tri-Me me CH 2 CH 2 CH 2 --- 3H Me Me Me III HSiCH 2 CHU CH 2 CH 2 CH 2 CH 2 Cl 2 -2 S (250) HS 2 (CH 2) 3 SiC 3 Me (249) 18001-52-0 17995-27-6 1-Propanethiol, 3,3 '- (1,1,3,3-tetramethyl-1,3-disiloxanediyl) bis-1-propanethiol, 3,3' - (dimethylsilylene) bis [2- methyl - I ## EQU1 ## where &## STR5 ## where &## 1         (251) (252) 17988-40-8 17980-28- 1-Propanethiol, 3- (dimethylphenylsilyl) -1-propanethiol, 2-methyl-3- (triethoxysilyl) - and Me L4 Etù0 - Si '--- CM2ùCH2ùCH2ùC`.f3û Six 1 HSùCH2ùCH2ùSiù0 ---' Si- CH 2 CH 2 --- 3H 1 Me Me (254). And (253) 17980-27-7 17940-03-3 1-Butanethiol, 4- (triethoxysilyl) -Euthhanethiol, 2,2 '- (1,1,3,3-tetramethyl-1,3-disiloxanediyl) bis- ## STR1 ## where ## STR2 ## where ## STR2 ## ## STR2 ## wherein: ## STR2 ## diethylmethylsilyl) - Me Where And Me 1 II MSù CH2ùCHùCH2 '°°° SiùMe HSùCHZùCHZùCH2ùSEEi ° --C'ï ~ 2ùCHZùCH2 --- S`HIE Where And CH2ù CH2ù CH2ù SH (257) (258) 17877-07-5 16915- 18-7 biethoxy (3-mercapto-2-methylpropyl) methylsilane Tris (3-mercaptopropyl) methylsilane & 7 = ## STR5 ## wherein Meù Si 33 °° C 2ùCM 2 -SH me :: Me (259) (260) 16915-17-6 16710-65-9 1-Propanethiol, 3,3 '- (dimethylsilylene) bis-Silanol, (2-mercaptoethyl) dimethyl Q uAc 0uMe MC: 32uC.E: 2 E3 Heu 33 --- CH2uCH2 --- SE- i, r. Me (261) 16710-05-7 Silanol, (2-mercaptoethyl) dimethyl-, 1-acetate Ethanethiol, 2- (methoxydimethylsilyl) - Where Me Me ## STR5 ## wherein: (263) (264) 14857-98-8 14857-97-7 Ethanethiol, 2- (dimethoxymethylsilyl) -1-propanethiol, 3- (methoxydimethylsilyl) Me Where Where Is 1 Etu O --- Si --- 'OH 2uCH2uCH2 --- SH i3S-' Ci: 2ùCHùC: 33: 2 °°° SiùMe Where And Where Me (265) (266) 14857-92-2 14814-09 -6 1-Propanethiol, 3- (dimethoxymethylsilyl) -2-methyl-1-propanethiol, 3- (triethoxysilyl) -methyl-1-yl-1H 2 -CH 2 -CH 2 -CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 O -SH O -Me Where & (267) (268) 13821-71-1 13818-38-7 1-Propanethiol, 2-methyl-3- (trimethoxysilyl) -1-propanethiol, 3- (diethoxymethylsilyl) -idpe Where And E M-% ùSx ## STR2 ## where ## STR2 ## And E (270) Me (269) 13399-93-4 13213-12-2 1-Propanethiol, 3- (trimethylsilyl) -ethanethiol, 2 - [[4- (diethoxymethylsilyl) butyl] amino] -? S ~ MeiiCH2 --- Sz --- C :: 32ùCH2 ----! 3 Etù Cil --- Si - 0ï-12ù And a cil 2 - Me CH2ù, °°° (271) CH2SH (272) 10545- 33-2 10545-32-1 Ethanethiol, 2- (diethylmethylsilyl) ethanethiol, 2- (methyldipropylsilyl) -Me CH 2 CH 2 SiH WhereEt 1 MeùCH 2 ---- Si °°°CH 2 -CH 2 -CH 2 -CH MS-CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 SiO 2 (273) (274) 10545-31-0 7617-51-8 1-Propanethiol, 3- (diethylmethylsilyl) -ethanethiol, 2,2 '- [[3- (triethoxysilyl) propyl] imino] bis-Me Me Me 1 1 WhereSiùMe O SiùMe OSiùMe Me 1 1 1 1 1 1 Where SiùMe O Siù CH2ù Sù CH2ùCH2- SH OSiùMe O SiùMe Me 0 --- si --- m.3 Me Me WhereSiùMe Me Where SiùMe Me Where siùMe Meù Siù Me ## STR2 ## wherein: ## STR1 ## , 7,9,11,13,15,17,19, 21,23,25,27-dodecasilahentriacontane-1,31-dith5,5,7,7,9,9,11,11,13,13,15 , 15,17,17,19,1 9,21,21,23,23,25,25,27, 27-tetracosamethyl- Where And H2ùCH2ùCH2ùNHùCH2ùCM2ù E_ (276) MeùO Where Me H (277) E SiùCH2 CH2 --- v E Where EC Where And Where? E 7617-50-7 7538-45-6 Ethanethiol, 2 - [[3- (triethoxysilyl) propyl] amino] -ethanethiol, 2- (trimethoxysilyl) -when Me Me O O °° 'Si- °° CH 2ù CH2 ## STR5 ## Preferably, the thiol-functional silicon compounds according to the invention are 1-propanethiol,

3- (triethoxysilyl). The concentration of silicon compounds with thiol function (s) is between 0.001% and 40% of the composition, preferably between 0.1% and 15%, preferably between 0.4% and 10%, this percentage being expressed by weight for weight.

3. Medium The medium suitable for dyeing, also called dyeing medium, is a cosmetic medium generally consisting of water or a mixture of water and one or more organic solvent (s) or by a mixture of organic solvents. By organic solvent is meant an organic substance capable of dissolving another substance without chemically modifying it.

3.1 Organic Solvents: As an organic solvent, there may be mentioned, for example, C1-C4 lower alkanols, such as ethanol and isopropanol; polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, as well as aromatic alcohols such as benzyl alcohol or phenoxyethanol, and mixtures thereof. The solvents are preferably present in proportions preferably of between 1 and 40% by weight approximately relative to the total weight of the dye composition, and even more preferably between 5 and 30% by weight approximately.

3.2 Adjuvants: The dyeing composition in accordance with the invention may also contain various adjuvants conventionally used in compositions for dyeing hair, such as anionic, cationic, nonionic, amphoteric, zwitterionic surfactants or their mixtures , anionic, cationic, nonionic, amphoteric or zwitterionic nonionic and siliceous polymers or mixtures thereof, mineral or organic thickening agents, and in particular anionic, cationic, nonionic and amphoteric polymeric associative thickeners, antioxidant agents, penetrating agents, sequestering agents, perfumes, buffers, dispersing agents, conditioning agents such as, for example, volatile or non-volatile silicones, modified or unmodified, film-forming agents, ceramides, preserving agents, opacifying agents. The adjuvants above are generally present in an amount for each of them between 0.01 and 20% by weight relative to the weight of the composition. Of course, those skilled in the art will take care to choose this or these optional additional compounds in such a way that the advantageous properties intrinsically attached to the dyeing composition according to the invention are not, or not substantially, impaired by the or the proposed additions. 3.3 Additional dyes: The dyeing composition may also contain one or more additional direct dyes other than the protected direct dyes disulphides or thiols. These direct dyes are, for example, chosen from those conventionally used in direct dyeing, and among which may be mentioned all the aromatic and / or nonaromatic dyes of current use such as neutral, benzene neutral, acidic or cationic direct dyes, direct dyes neutral azo, acidic or cationic, natural direct dyes, quinone direct dyes and in particular neutral, acidic or cationic anthraquinone dyes, direct dyes azine, triarylmethane, indoamine, methines, styrils, porphyrins, metalloporphyrins, phthalocyanines, methine cyanines, and fluorescent dyes. Among the natural direct dyes that may be mentioned are lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogalline, protocatechaldehyde, indigo, isatin, curcumin, spinulosin, apigenidine, orceins. It is also possible to use the extracts or decoctions containing these natural dyes, and in particular poultices or extracts made from henna. According to the invention, the additional direct dye (s) used according to the invention preferably represent from 0.001% to 10% by weight approximately of the total weight of the dyeing composition and even more preferably from 0.05% to approximately 5% by weight.

The dye composition may also contain one or more oxidation bases and / or one or more couplers conventionally used for dyeing keratinous fibers. Among the oxidation bases, mention may be made of para-phenylenediamines, bisphenylalkylenediamines, para-aminophenols, bis-para-aminophenols, ortho-aminophenols, heterocyclic bases and their addition salts. Among these couplers, it is possible to mention in particular, meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalenic couplers, heterocyclic couplers and their addition salts.

The coupler or couplers are each generally present in an amount of between 0.001 and 10% by weight of the total weight of the dye composition, preferably between 0.005 and 6%. The oxidation base (s) present in the dyeing composition are in general each present in an amount of between 0.001% and 10% by weight relative to the total weight of the dyeing composition, preferably between 0.005% and 6% by weight. In general, the addition salts of the oxidation bases and couplers that can be used in the context of the invention are chosen especially from the addition salts with an acid such as hydrochlorides, hydrobromides, sulphates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates and addition salts with a base such as alkali metal hydroxides such as sodium hydroxide, potassium hydroxide, ammonia, amines or alkanolamines. According to a particular embodiment, the composition of the present invention contains at least one oxidation base and optionally at least one coupler as defined above.

The compositions may also comprise one or more oxidizing agent (s). The oxidizing agent may be chosen for example from hydrogen peroxide, urea peroxide, alkali metal bromates such as sodium bromate, persalts such as perborates and persulfates, and enzymes such as peroxidases. and two- or four-electron oxidoreductases such as uricases, and four-electron oxidases such as laccases. The use of hydrogen peroxide is particularly preferred. The content of oxidizing agent is in general between 1 and 40% by weight, relative to the weight of the composition, preferably between 1 and 20% by weight relative to the weight of the composition. 3.4 pH: The pH of the dyeing composition comprising the dye (s) is generally between 2 and 12 approximately, and preferably between 3 and 11 approximately. It can be adjusted to the desired value by means of acidifying or alkalizing agents usually used for dyeing keratin fibers or else using conventional buffer systems. The pH of the composition according to the invention is preferably between 6 and 9. Among the acidifying agents, mention may be made, by way of example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, sulfonic acids. Among the alkalinizing agents, mention may be made, for example, of ammonia, alkaline carbonates, alkanolamines such as mono-, di- and triethanolamines and their derivatives, sodium or potassium hydroxides and compounds of the following formula (a): ## STR2 ## wherein Wa is a propylene residue optionally substituted with a hydroxyl group or a C 1 -C 4 alkyl radical; Ra1, Ra2, Ra3 and Ra4, which may be identical or different, represent a hydrogen atom, a C1-C4 alkyl radical or a C1-C4 hydroxyalkyl radical. According to a particular embodiment of the invention the dye composition contains alkaline agents including at least monoethanolamine.

3.5 Forms of the composition The dye composition may be in various galenic forms, such as in the form of liquid, lotion, cream, gel, or in any other form suitable for dyeing keratinous fibers. It may also be packaged under pressure in an aerosol flask in the presence of a propellant and form a foam. The dyeing process The invention also relates to a direct dyeing process which comprises the application to keratin materials, in particular keratinous fibers such as dark hair, of a dye composition containing one or more dyes (s). ) function (s) with disulfide function (s) and one or more silicon compound (s) with protected thiol function (s). After a laying time, the keratinous fibers are rinsed, revealing colored fibers. According to a particular embodiment in the method of the invention the exposure time after the application of the composition containing one or more direct dye (s) function (s) disulfide (s) and one or more compound Silicone (s) with thiol function (s) is fixed between 5 minutes and 1 hour. Preferably between 15 minutes and 1 hour. This composition may be obtained by extemporaneous mixing of at least two compositions, one of which comprises one or more disulfide dye (s) or thiol (s) with protected thiol function (s) and whose the other comprises one or more silicon compound (s) with protected thiol function (s).

According to one variant, the dyeing method according to the invention consists in applying, with or without intermediate rinsing, keratin materials, in particular keratinous fibers such as dark hair, i) a dye composition, comprising in a cosmetic medium one or more protected dye (s) or thiol (s), in particular protected fluorescent dye (s) or thiol (s), and (ii) a composition comprising one or more several silicon compound (s) with thiol function (s). The order of application can be any. Preferably, the composition with the silicon thiol is applied in post-treatment. The duration of the post-treatment with a silicon compound with protected thiol function (s) may be short, for example from 1 second to 30 minutes, preferably from 1 minute to 15 minutes. When a dye with protected thiol function (s) of formula (I) comprises a group Y protecting the thiol function, the method of the invention may be preceded by a deprotection step intended to restore in-situ the SH function.

By way of example, it is possible to deprotect the SY function of the dyes of the invention with the protective group by adjusting the pH as follows: Y: alkylcarbonyl deprotection protecting group, pH> 9 arylcarbonyl, pH> 9 alkoxycarbonyl, pH> 9 aryloxycarbonyl, pH> 9 arylalkoxycarbonyl pH> 9 (di) (alkyl) aminocarbonyl, pH> 9 (alkyl) arylaminocarbonyl pH> 9 optionally substituted aryl such as phenyl, pH> 9 monocyclic 5-, 6- or 7-membered heteroaryl such as oxazolium; pH> 9 8 to 11-membered bicyclic heteroaryl such as benzoimidazolium, pH> 9 or benzoxazolium The deprotection step can also be carried out during a hair pretreatment step such as, for example, a hair reduction pretreatment. A treatment with an oxidizing agent can optionally be associated in post-treatment. Any type of conventional oxidizing agent may be used in the art. Thus, it may be chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulphates, as well as the enzymes among which may be mentioned peroxidases, oxides, 2-electron reductases such as uricases and 4-electron oxygenases such as laccases. The use of hydrogen peroxide is particularly preferred. The duration of the possible post-treatment with an oxidizing agent is between 1 second and 40 minutes. Preferably between 1 and 10 minutes.

The application of the dye composition according to the invention is generally carried out at room temperature. However, it can be carried out at temperatures ranging from 20 to 80.degree. C., preferably between 20 and 60.degree. The application of the composition can be carried out on dry hair or be preceded by the moistening of the hair.

The invention also relates to a multi-compartment device or "kit" of dyeing in which a first compartment contains a dye composition comprising one or more dye (s) disulfide (s) or protected thiol (s), and a second compartment contains one or more silicon compound (s) with thiol function (s). Said device may contain a third compartment comprising one or more oxidizing agent (s). The examples which follow serve to illustrate the invention without, however, being limiting in nature. The disulfide direct dyes useful in the present invention are known compounds and can be prepared according to methods known to those skilled in the art, in particular from the methods described in EP 1 647 580.

EXAMPLE OF COLORING Example 1: Synthesis of 2,2 '- {disulfanediylbis [ethane-2,1-diylimino-4,1-phenylenediazene-2,1-diyl]} bis (1,3-dimethyl-1H) dichloride imidazol-3-ium) [1] Me Me N + NC 'HH N-4N • JN "NNNN Me Me r C H H Cl Cl 15 [1] Scheme of Synthesis 77 10 + 2 H2NS-SNH2 CI \ \ NH Cystamine base (552.2 mg, 3.62 mmol) obtained from cystamine dihydrochloride by addition of sodium hydroxide and extraction with ethyl acetate is solubilized in 2 ml of pentanol. (4-methoxyphenyl) diazenyl] -1,3-dimethyl-1H-imidazol-3-ium (2.42 m, 9. 1 mmol), suspended in 80 ml of dichloromethane The mixture is brought to 50 ° C. and kept stirred After 1 hour, it is concentrated under vacuum (removal of dichloromethane), 20 ml of water are added and the reaction mixture is maintained for one more hour at 50 ° C. It is then cooled and poured onto 50 ml of pentanol, a red precipitate. appears, which is filtered t washed with acetone and dried under vacuum. 1.1 g of dark red powder is thus obtained in accordance with the structure above.

The coloring compositions were carried out with the contents of the ingredients given in the table below: ## STR1 ## Composition Composition 1 Composition 2 (Comparative) Dyestuffs according to Example 1 Colorant 1 Colorant 1 0.3 g% 0.3 g% 3-mercaptopropyl) - 4 g% (MA) - triethoxysilane (16.8.10 mol) ~ os ~~~~ sH Çb MM = 238 thioglycolic acid, - 1, 44 g HS -CH 2 -COOH (16.8 × 10 -3 mol) (C2H402S, MM = 92) Ethanol 10 g% 10 g% Monoethanolamine Qsp pH 9.0 Qsp pH 9.0 Water Qsp 100 Qsp 100 Operating Procedure 90% natural white (BN) or permed (BP) hair.

Compositions 1 and 2 are applied to BN or BP hair, followed by a pause time of 25 minutes at room temperature (22.6 ° C.). The locks are then rinsed and dried. Colorimetric results

The color of the locks after staining was evaluated in the L * a * b * system using a MINOLTA CM2600D spectrophotometer.

In the L * a * b * system, the three parameters respectively denote the intensity (L *), the shade (a *) and the saturation (b *). According to this system, the higher the value of L, the lighter or less intense the color. Conversely, the lower the value of L, the darker or more intense the color. a * and b * indicate two color axes, a * indicates the green / red color axis and b * the blue / yellow color axis.

20 AE _ ./(L* ù Lo *) 2 + (a * ù ao *) 2 + (b * ù bo *) 2 The variation of the color between natural and permed hair was measured by AE according to the equation above from the values of Lo * ao * bo * natural locks after treatment (staining with the composition 1 or 2) and L * a * b * values of the wicks 10 permanent after treatment (staining with the composition 1 or 2). The higher the value of AE, the greater the difference in color between natural and permanent hair after treatment is important, and in this case, less good is the homogeneity of the color. The results are summarized in the tables below: Table 1: L * a * b * BN wick treated with composition 1 or 2 (D65) (D65) (D65) BN composition 1 (invention) 23.45 31.06 16 , 54 BN composition 2 (comparative) 28.50 34.52 20.30 Table 2: L * a * b * BP wick treated with composition 1 or 2 (D65) (D65) (D65) BP composition 1 (invention) 22.91 31.89 15.49 BP Composition 2 (Comparative) 25.81 33.13 18.39 It appears from the results of Tables 1 and 2 of coloring, that the composition according to the invention leads to more nuances. intense, and this, on the locks BN or BP (L * weaker with the composition of the invention vs. the comparative). In addition, the colorations obtained from the composition and the process according to the invention are less selective. the comparative (i.e more homogeneous with composition 1 AEcomposition1-1,44 vs. DEcomposition2 = 3,58)

Claims (17)

1. Dyeing composition, comprising in a suitable cosmetic medium, i) one or more dyes chosen from the direct dyes with disulfide function (s) or protected thiol function (s) and (ii) a or more silicon compound (s) with thiol function (s). 2. Composition according to the preceding claim wherein the dye (s) are of formula (I): ## STR1 ## its organic or inorganic acid salts, its isomeric isomers, geometric and their solvates. such as hydrates, formula (I), wherein: • U represents a radical chosen from: i) -S-C'sat - (X ') p.-A'; ii) ùSuCsat ù (X ') p. and iii) ùY; • A and A ', identical or different, represent a radical containing one or more cationic chromophore (s) or not, fluorescent or not; Y represents a protecting group of thiol function; X and X ', which may be identical or different, represent a linear or branched, saturated or unsaturated, C1-C30 divalent hydrocarbon chain, optionally interrupted and / or optionally terminated at one or both of its ends by one or more divalent groups or combinations thereof selected from: 25 ^N (R) -, -N + (R) (R) -, -O-, -S-, -CO-, -SO2- with R, same or different, selected from hydrogen a C1-C4 alkyl, hydroxyalkyl, aminoalkyl radical; an aromatic or non-aromatic, saturated or unsaturated, fused or unsaturated hetero ring radical optionally comprising one or more identical or different heteroatoms, optionally substituted; • p and p ', identical or different, are 0 or 1; • Csat and Csat, identical or different, represent a linear or branched, optionally substituted, optionally cyclic C1-C18 alkylene chain; D is a radical selected from hydroxy, hydroxyalkyl, alkoxy, carboxylic, carboxylate, amino, alkylamino, and dialkylamino radicals. 3. Composition according to the preceding claim wherein Y represents a group chosen from: (C1-C4) alkylcarbonyl; 40 (C 1 -C 4) alkylthiocarbonyl; (C1-C4) alkoxycarbonyl; (C 1 -C 4) alkoxythiocarbonyl; C 1 -C 4 alkylthio thiocarbonyl; ^ (di) (C1-C4) (alkyl) aminocarbonyl; ^ (di) (C1-C4) (alkyl) aminothiocarbonyl; arylcarbonyl; aryloxycarbonyl; aryl (C 1 -C 4) alkoxycarbonyl; ^ (di) (C1-C4) (alkyl) aminocarbonyl; (C1-C4) (alkyl) arylaminocarbonyl; carboxy; ^ S03; M + with M + representing an alkali metal or a counterion of the cationic chromophore A and M + are absent; aryl; optionally substituted heteroaryl; optionally substituted heterocycloalkyl, optionally cationic; or the heterocycle represents the following group: ## STR1 ## wherein R '°, R'd, R'e, R'f, R'g and R '", which may be identical or different, represent a hydrogen atom or a (C1-C4) alkyl group, or else two R'g groups with R'h, and / or R'e with R'f form an oxo or thioxo group, or R'g with R'e together form a cycloalkyl, and v represents an integer inclusive between 1 and 3; ^ -C (NR '° R'd ) = N + R'eR'f; An 'with R' °, R'd, R'e and R'f, which are identical or different, represent a hydrogen atom or a (C 1 -C 4) alkyl group; -C (NR '° R'd) = NR'e, with R' °, R'd and R'e are as defined above; ^ (di) aryl (C, -C4) optionally substituted alkyl; di) heteroaryl (C 1 -C 4) alkyl optionally substituted; CR'R 2 R 3 with R ', R 2 and R 3, which may be identical or different, representing a halogen atom or a group chosen from: - (C 1 -C 4) alkyl; (C1-C4) alkoxy; - optionally substituted aryl; téroaryle optionally substituted; -P (Z ') R''R'2R'3 with R'1, and R'2 identical or different represent a hydroxyl group, (C1-C4) alkoxy or alkyl, R'3 represents a hydroxyl group or ( C 1 -C 4) alkoxy, and Z 'represents an oxygen or sulfur atom; cyclic sterically hindered; and optionally substituted alkoxyalkyl. 4. Composition according to claim 2 or 3 wherein Csat and C'sat, represent a chain - (CH2) k- with k integer, inclusive between 1 and 8. 5. Composition according to any one of claims 2 to 4, wherein p is equal to 1, x and X ', identical or different, represent the following sequence: - (T) t- (Z), (T') r said sequence being connected in formulas (I) or (II) symmetrically as follows: - Csat (or C'sat) - (T) t- (Z), (A or A '); wherein: T and T ', identical or different, represent one or more radicals or combinations thereof selected from: -S-; -N (R) -; -N + (R) (R 0) -; -SO-; -SO2-; and co- ; with R, R °, which may be identical or different, representing a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 hydroxyalkyl radical or a (C1-C4) alkyl radical; and a heterocycloalkyl or heteroaryl radical, cationic or non-cationic, preferentially monocyclic, preferably containing two heteroatoms; t and t ', identical or different, are 0 or 1; Z represents: n - (CH2) m with m integer ranging from 1 to 8 - (CH2CH2O) q- or - (OCH2CH2) q- wherein q is an integer from 1 to 15; an aryl, alkylaryl or arylalkyl radical; wherein the alkyl radical is C1-C4 and the aryl radical is preferably C6, being optionally substituted by at least one SO3M group with M representing a hydrogen atom, an alkali metal or an ammonium ammonium group substituted with one or more C 1 -C 13 linear or branched, which may be identical or identical, radicals optionally bearing at least one hydroxy z is 0 or 1. 6. Composition according to any one of the preceding claims, in which the direct dye with a disulfide function is chosen from the dyes of formula (III) to (XVI): ## STR1 ## (CR 3 R 4) ## EQU1 ## n '(CR'3R'4) n, (CR'1R'2) m, NR, Rb R' n (IV) Ta \ / S 'S \ Tb (CRIR2) ,, (CR3R4), (CR'3R') 4) n, ~ (CR'1R'2) m, N Rb R '/ (V) T SùS \ T Het Nù (CR R) m (CR4), \ / b (CR'3R'4) n, ~ (CR'fR'2) m N HET 'NNM' I ~ \ M TA ST \ SNN CRI R2) m (CR3R4), \ (CR3R4) nb \ (CR'iR'2) m, (VII) Rn M ' R '"h M' G RbN Ta SS Tb ù (CR1R2) m (CR3R4) n ~ (CR'3R'4) n, ~ (CR'1R'2) mN (VIII) M 'R'f / Rb' ## EQU1 ## ## STR2 ## ## EQU1 ## ## EQU1 ## (CR3R4) n (CR'3R'4) n '(CR'1R'2) m, N \ Rb R'a (X) ..--- -Ta ,,,,, SùS \ / Tb Rc (CR1R2) m (CR3R4) n (CR'3R'4) n '(CR'1R'2) m, N \ R'd Hét Nù (CR R) m (C R4) n S (CR'3R'4) nTb ~ (CR'1R'2) N Het NY \ --- N 1 R'c Rh M TT c / R ab ùN N ~ (CRIR2) m (CR3R4) n \ (CR, R4) n '\ (CR'1R'2) m Ra (XIV) R Ta Tb / c Nù (CRI R2) m \ (CR3R4) n (CR R) n 'X (CR'1R N \ R'a (XV) and ä ---- Ta S \ ~ -Tb (CRI R2) m N (CR3R4) n S \ (CR3R4) n, \ (CR'1R N \ Ria (XVI) formulas (III) to (XVI) in which: Ta T / Rc N (CRR2) ~ m (CR3R4) n ù (CR'3R'4) (CR ', R. R'd Rb (XII) R'Rh Rb (XIII) N / Rr Re M 'Ra Rb / Rc • G and G', identical or different, represent a group -NRCRd, -NR'CR'd, or optionally substituted C1-C6 alkoxy, preferably unsubstituted; preferentially G and G 'represent a group -NRCRd and -NR'CR'd respectively; R ', R2, R3 and R4, which may be identical or different, represent a hydrogen atom or a C1-C6 alkyl group; Ra and R'a, which are identical or different, represent an aryl (C 1 -C 4) alkyl group or a C 1 -C 6 alkyl group optionally substituted by a hydroxyl or amino, C 1 -C 4 alkylamino or C 1 -C 4 dialkylamino group, said radicals alkyls capable of forming with the nitrogen atom which carries them a heterocyl group comprising from 5 to 7 members, optionally comprising another heteroatom other or different from nitrogen; preferably Ra and R'a represent a C1-C3 alkyl group optionally substituted by a hydroxyl group, or a benzyl group; • Rb, R'b, identical or different, represent a hydrogen atom, an aryl (C 1 -C 4) alkyl group or an optionally substituted C1-C6 alkyl group; preferentially Rb, R'b represent a hydrogen atom or a C1-C3 alkyl or benzyl group; • Rd, R'g, Rd and R'd, identical or different, represent a hydrogen atom, an aryl (C 1 -C 4) alkyl, C 1 -C 6 alkoxy group or an optionally substituted C1-C6 alkyl group; Rd, R'g, Rd and R'd preferably represent a hydrogen atom, a hydroxy group, C1-C3 alkoxy, amino, C1-C3 (di) alkylamino, or a C1-C3 alkyl group optionally substituted with i) hydroxy, + ii) amino, iii) C1-C3 (di) alkylamino, or iv) quaternary ammonium (R ") (R" ') (R "") N -; or two adjacent radicals R, and Rd, R ', and R'd carried by the same nitrogen atom together form a heterocyclic or heteroaryl group; preferentially the heterocycle or the heteroaryl is monocyclic and comprises between 5 and 7 members; more preferentially, the groups are chosen from imidazolyl and pyrrolidinyl; • Re and R'e, identical or different, represent a hydrocarbon chain C1-C6 alkylenyl divalent, linear or branched, optionally unsaturated; • Rf and R'f, identical or different, represent an ammonium + quaternary group (R ") (R" ') (R "") N - where R ", R"' and R "", which are identical or different, represent a hydrogen atom or a C1-C4 alkyl group or else (R ") (R" ') (R "") N - represents a cationic heteroaryl group optionally substituted, preferably an imidazolinium group optionally substituted by a C1-C3 alkyl group; ; • Rg, R'g, R "g, R" 'g, Rh, R'h, R "h, and R"' h, identical or different, represent a hydrogen atom, a halogen atom, a amino group, C1-C4 alkylamino, C1-C4 dialkylamino, cyano, carboxy, hydroxy, trifluoromethyl, acylamino, C1-C4 alkoxy, (poly) hydroxyalkoxy C2-C4, alkylcarbonyloxy alkoxycarbonyl, alkylcarbonylamino, acylamino, carbamoyl; alkylsulfonylamino, an amino-sulphonyl radical, or a C1-C16 alkyl radical optionally substituted with a group chosen from C1-C12 alkoxy, hydroxy, cyano, carboxy, amino, C1-C4 alkylamino and C1-C4 dialkylamino, or both. alkyl radicals carried by the nitrogen atom of the amino group form a heterocycle comprising from 5 to 7 members and optionally comprising another heteroatom identical to or different from that of the nitrogen atom; preferably, Rg, Rg, Rg, Rg, Rh, Rh, R "h, and R" "h represent a hydrogen atom, a halogen atom or a C1-C3 alkyl group; Or two groups Rg and R'g; R "g and R" 'g; Rh, and R'h; R "h and R" 'h borne by two adjacent carbon atoms together form a benzo, indeno ring, a fused heterocycloalkyl or fused heteroaryl group; the benzo, indeno, heterocycloalkyl or heteroaryl ring being optionally substituted by a halogen atom, an amino group, C1-C4 alkylamino, C1-C4 dialkylamino, nitro, cyano, carboxy, hydroxy, trifluoromethyl, an acylamino, C1-alkoxy group; -C4, (poly) hydroxyalkoxy C2-C4, alkylcarbonyloxy alkoxycarbonyl, alkylcarbonylamino, an acylamino, carbamoyl, alkylsulfonylamino radical, an amino-sulfonyl radical, or a C1-C16 alkyl radical optionally substituted with: a group selected from C1-C12 alkoxy , hydroxy, cyano, carboxy, amino, C1-C4 alkylamino, C1-C4 dialkylamino, or the two alkyl radicals carried by the nitrogen atom of the amino group form a heterocycle comprising from 5 to 7 members and optionally comprising another heteroatom identical or different to that of the nitrogen atom; preferentially Rg and R'g; R "g and R" 'together form a benzo group; • or when G represents -NRCRd and G 'represents ûNR'CR'd two groups R, and R'g; R ', and R "g; Rd and Rg; R'd and R"' together form a saturated heteroaryl or heterocycle, optionally substituted with one or more C1-C6 alkyl groups, preferentially a heterocycle containing one or two heteroatoms; selected from nitrogen and oxygen and comprising between 5 and 7 members; more preferably, the heterocycle is chosen from the morpholinyl, piperazinyl, pyperidinyl and pyrrolidinyl groups; • R, R ', R ", and R"', identical or different, represent a hydrogen atom, or a C1-C4 alkyl group; R, R2, R3, R4, R'1, R'2, R'3, and R'4, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl or C1-C12 alkoxy group; hydroxy, cyano, carboxy, amino, C1-C4 alkylamino, C1-C4 dialkylamino, said alkyl radicals being able to form with the nitrogen atom which carries them a heterocycle comprising from 5 to 7 members, optionally comprising another heteroatom different or not nitrogen; preferably R 1, R 2, R 3, R 4, R '1, R' 2, R '3, and R' 4 are hydrogen atoms or an amino group; more preferably R 1, R 2, R 3, R 4, R '1, R' 2, R '3 and R' 4 represent a hydrogen atom; • Ta, Tb, identical or different, represent i) a covalent bond a, ii) or one or more radicals or combinations thereof selected from -SO2-, -O-, -S-, - N (R) -, - N + (R) (R °) -, -CO-, with R, R °, which may be identical or different, representing a hydrogen atom, a C1-C4 alkyl radical or a C1-C4 hydroxyalkyl radical; or aryl (C 1 -C 4) alkyl, preferably Ta is identical to Tb and represent a covalent bond a or a group selected from N (R) -, -C (O) -N (R) -, -N (R) ) -C (O) -, -OC (O) -, -C (O) -O- and -N + (R) (R °) -, with R, R ° identical or different representing a hydrogen atom or a C1-C4 alkyl group; more preferably Ta and Tb represent a bond a; iii) a heterocycloalkyl or heteroaryl radical, cationic or non-cationic, preferentially monocyclic, preferably identical, preferably containing two heteroatoms (more preferably two nitrogen atoms) and preferably comprising from 5 to 7 members such as imidazolium; Het N- • OR - N Het ', identical or different, represent an optionally substituted heterocyclic group; preferentially, the heterocycles are identical, monocyclic, saturated, and comprise in total two nitrogen atoms and from 5 to 8 ring members; • represent an aryl or heteroaryl group fused to the imidazolium or phenyl ring; or is absent from the imidazolium or phenyl ring; M, m ', n and n', which may be identical or different, represent an integer inclusive between 0 and 6 with m + n, m '+ n', which may be identical or different, represents an integer between 1 and 10 inclusive; preferentially m + n = m '+ n' = an integer inclusive between 2 and 4; more preferably m + n = m '+ n' = an integer equal to 2; M 'representing counter ion or an organic or inorganic acid salt. 30 7. A composition according to any one of the preceding claims wherein the disulfide-functional direct dye is selected from: pH, H3 \ C + \ N = NN = NN HN \ H3C CH3 2M '/ SS ,, / \ N CH3. WZ, WZ N \ N / OH HO HO N = N SS N = N / - \ \ N SS N \ oi s .WHN = N SùS / N = N Sec N = N iv iv, W 88 L808Z6Z 89HO / - \ \ N SS N \ V 2 M 'OH / - \ \ N SS N \ / - \ \ N SS N \ HO O / - \ \ N SS N \ HO HO 2M' 2M '2 M ## EQU1 ## SS N \ V / - \ \ N SS N \ \ 2 M '/ - / - \ Ss \ _ N \ 2M' / N10 \ N / 2M '2M' 2M '\ N / 2M' 2M 'HO OHHO HO OH 2M 'NN 2M' \ V HO OH 2M 'N / NN 2M' \ -ss - / - + ss \ N / / N \ + N N- \ 2M 'NN / / N \ 4M'M' &Numsp; &numsp; &numsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &numsp; &numsp; &numsp;## STR5 ## wherein Y is an amino, ## STR1 ## identical or different, representing anion counterions onic. 8. Composition according to any one of the preceding claims wherein the protected direct dye thiol is selected from: M 'M' - \ ...- S y Ph o M'M 'ù M' -o An- An- An ## STR5 ## or different, representing anionic counterions. 9. Composition according to any one of the preceding claims wherein the thiol-functional silicon compound has a molecular weight greater than or equal to 200 and particularly between 200 and 1000. 10. Composition according to any one of the preceding claims wherein the silicon compound with thiol function (s) is chosen from those of formulas (A), (II), (C) and (D) R RZ Si- Wherein R 1, R 2 and R 3, which may be identical or different, represent: i) a hydrogen atom, or a group chosen from ii) hydroxy, iii) (C 1 -C 20) X-ALK-SH 1 R 3 ) alkyl, iv) (C 1 -C 20) alkenylene, v) (C 1 -C 20) alkoxy, vi) (C 3 -C 9) cycloalkyloxy, vii) optionally substituted aryl, viii) aryloxy, ix) cycloalkyl, x) cycloalkyloxy, xi ) (C1-C6) alkylcarbonyloxy or (C1-C6) alkyl-C (O) -O- xii) G- (C1-C20) alkyl, or xiii) G- (C, -C20) alkoxy with G representing a group hydroxy, (C 1 -C 6) alkoxy, or thiol SH; or alternatively, two substituents R 1 and R 2, R 3 and R 3, R 2 and R 3 together with the silicon atom carrying them an optionally substituted monocyclic heterocycle comprising from 4 to 8 members and bearing 1 or 2 heteroatoms; - or three substituents R1, R2 and R3 together with the silicon atom which carry them an optionally substituted, bicyclic fused heterocycle comprising from 4 to 8 members, and bearing 1, 2 or 3 heteroatoms; X represents: i) a bond a, ii) a heteroatom or a group NR with R representing a hydrogen atom or a (C1-C4) alkyl group, or iii) X form with one of the substituents R1, R2 or R3 and the silicon atom carrying a heterocycle; - ALK represents a C1-C20 alkylene chain, which is optionally interrupted and / or terminated at a of X, when X is different from a bond or a heteroatom, by: i) a heteroatom; ii) a group selected from ùC (O) ù, ùN (R) ù, ùN (R) ùC (O) ù, ùC (O) ùN (R) ù, ùN (R) ùC (O) ùN (R ') wherein R 1 and R ', which may be identical or different, represent a hydrogen atom or a (C 1 -C 4) alkyl group; or iii) a monocyclic heterocycle comprising from 1 to 3 heteroatoms selected from oxygen, sulfur or nitrogen, optionally substituted and having from 5 to 7 members; and - which is optionally substituted; fR 4) t Xù (ALK) S ii [X'ùALK'ùSH] n (R 5) ux (B) formula (B) in which: - p, q, r, s, t, and u are 0 or 1 ; - x is an integer inclusive between 1 and 20; - m is an integer inclusive between 1 and 4, and n is an integer between 1 and 3, - R'1, R'2, R'3, R'4 and R'5, identical or different, represent: i) the same groups as R1, R2 and R3 as defined above, ii) or a trisubstituted siloxane group RaRbRcSi-O-with Ra, Rb and Rd, identical or different, representing the same groups as R1, R2 and R3 such that defined above, iii) or a group R'aR'bR'cSiùOiSi (R'd) (R'e) ùALK "ù, with ALK" being as defined for ALK previously and R'a, R'b, R ' ,, R'd and R'e, identical or different, representing: • a hydrogen atom, • a hydroxyl group, • a (C 1 -C 4) alkoxy group, • a (C 1 -C 4) alkyl group, or A group R "aR" bR "cSiùOù, with R" a, R "b and R identical or different, represent a hydrogen atom, or a group (C1-C4) alkyl; - ALK and ALK ', identical or different; different, represents a group as defined for ALK previously: X and X ', identical or different ifferents, represent: i) a bond 6, ii) a heteroatom such as oxygen or a group NR with R representing a hydrogen atom or a (C 1 -C 4) alkyl group; R'1 \ R'1 \ If X "Si / Rz / X '~ / 1 _. Si - X ~ If R? Z X'-Si X / \ Si R" X-SiR? R ~ / X "R ~ \ Where (C) R 3 (D) R 3 formulas (C) and (D) in which: X, X 'and X ", which may be identical or different, represent the same atoms or groups as X or X'; defined above; R'1 to R'4, and R "1 to R" 4, which are identical or different, are such that R'1 to R'4 defined above, it being understood that in formulas (C) and ( D) at least one SH function is on one of the groups R'1 to R'4, and R "1 to R" 4. 11. Composition according to any one of Claims 1 to 10, in which the thiol-functional silicon compound is chosen from the following compounds: ## STR2 ## where Si (Si) Si (Si) Si (Si) Si (Si) Si (Si) Si ## EQU1 ## where SiMe 3 1 Si (CH 2) 3 SiH 1 OMe Where SiMe 3 1 Si (CH 2) 3 SiH OH Where Si CH 2 CH 2 CH 2 Si (2) (1) Where Me SiO 2 Si (CH 2) 4 CH 2 O (Me) (3) where CH 2 (CH 2) 7 CH 2 CH 3 where Me (4) SH is Me 2 CH 2 CH 2 CH 2 CH 2 CH 2 (6) (5) (13); If Siu CH2u Cl'-12u SM (7) where Me Where CH2u where CH2u CH2i CH2 where SH where Me (9) where And where CH2i where CH2i where SHu and where Mei (CH2) where where ## STR1 ## where (CH 2) CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 Where Where? C1-12? CH2? CH2? SE? Where? -I (10)? (12) (14)? Where? O?? - Where Si? 2- (c 2) 9-2-e? - (c2) 15 -oG - m2-c2- m2: a o- o- (C2) 3 -M (66) R $ e- M -o-2- (C 2) - 2 -H o o- (~ 7 O- And Me 2 -m 2-CU 2 2-. (! 8) ois s ~ Mo-s1-2-c2-S-c2-c2-C12-A s / j where Me (20) (99) o- Pr-n Si g (22} - 1 s /! = -2r-where Siu ~ 2- c2- c2- ~ 2 @ a) \ - Pr-n (21) A me- 2 ~ Sc 2-c 2- ## STR2 ## wherein ## STR2 ## wherein: α-C 2 -c 2 -c 2 -α: -o (66) (25) o- (c 2) 13 -M 0 (~ y ~ -Me (c 2) 17 -OuSiu 2- c 2- CH2u aa A- - 2- c2-m2-SH o- (C2) 15- ~ ( ~) (28) Where (CH2) 13Me Meù (CH2) 13ù0.Y`0i ---- CH2ùCH2ùCH ---- EH where (CH2) 13Me (29) L ~ \\ 1 siù0 OSiùO CL_ Where li 0ùSi Si If (31) where Bu -n Mei Si --- CH2uCH2uCH2 --- EH where Bu -n (33) OH OHi (CH2) 3iSiuO °°° If CH2u CH2u C'H2u SH 1 OH ## STR2 ## wherein (CH 2) n is CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 ) where M (CH 2) CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 SiCH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 4 CH 2) CH 2 CH 4 CH 2 CH 4 CH 2 CH 4 CH 2 CH 4 CH 2 CH 4 CH 2 CH 4 CH 2 ## STR5 ## where CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 ## STR5 ## where: ## STR1 ## where: ## STR2 ## where: ## STR2 ## ## EQU2 ## where (CH2) ## STR2 ## where (CH2) Me (42) i-Bu sil HF, -CS32-CHy-CHy / / BU-i Bu-1 if s \\ oi \ I o / siùo i-Bu where sii where \ si / oi-BU ~ si \ Bu -i 1 / '4 CH2-Pr-i (44) OH Me3Siu0 --- If ## STR1 ## where Me 2 where CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 - CH2u (CH2) 16 Where Me (49) Where And Where 0--3 • L-- CH2u (CH2) 6uC.Ei riEE Where And Where And MS '--- CH2uCH2uCH2 --- Siu CH2ù (CH2) 16iM Where And (46) Where Me HS - C H2u CH2u CH 2 --- Si --- CH2ù (CH2) 6 ùMe OùMe (48) Where Me Where Si --- CH2ù (CH2) 6ùCH2 --- SM Where Me ( 50) Jù Me O-Si. What is the difference between Me and CH (1) where (1) and (51) (52) where is the temperature and where is the temperature of the gas, and where is the temperature? °° - SH Where Me (54) (53) 2928087 104 Me 1: I- m: - m2-m2- m: - Æ oo: - 2-m! 1 1 Meù CH CHùEt where 1 1 (55) Me (56) where Me `2ù CH2ùCH 2ù _ - Gù 2 C H2 where CHùEt where Me OS-m2-m2- 2-m (58) I _- m o- CHiEt 1 and Me (57) O Me - a: - e _-Q Siu m, - n2-n2-s n2- m, - a to zSi to where Me & 3 - / m OMe Me where Me II xù (C2) 3iSiùoùSiùO Siù 2ùc2ùCH2ùS MeùSiùCMùCHi 2 2 oe ~ M (61) (62) Me _Sm_2 - æ, _a2 O \ - ~ 2- ~ 2 If _Sm_2 a \ _ @ mo I 1 ~ w ° I 1 _ Sw_2 _Jm-_6 -Si ~ 2iSiC ae, ~ 2-e; -e If oa II 1 x / Me _Sm_2 o aooo _ @ Me II 1 0ù 6- ~ 2CH2Si _Sm_2 1 1 Where Si MeSm_2 whereli (63) / ° ( oo ~ Si (64) 105 Me3SiùO Me WhereSiMe3 OH CùSiùCH2ùCH2ùSiùOiSiMe3 Me --- Siù CH2ù (CH2) 8ùCi: 2 53 =, (Me Me WhereSiMe3 Me 3 Siù Where Siù CH2ù CH2ù Siù fJ --Hl `'EE2ù CH2ù OH .2 --- b'23 OH II Me WhereSiMe3 (66) Me3SiùO Me EE II ù SiùCH2ùCH2ùSiùOiSiMe3 I I Me WhereSiMe3 (65) Me 0-Me Meùi Si MeùCH2 ---- SiCH2ùCH2ùCxf2 ---- SH / Me C I E YdE O S1- Where And / 1 (68) Me / Siù :? ## EQU1 ## where And SiHMe 2 I and SiOCH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (69) (70) Me3SiùO Me H_uEH2ùCH2ùCS39 1 Meù Si- ° -0ùSiùCH2ùCH2ùCH2 SH Me3SiùO I Me ^ ùsll \ I ~ ùoff o (72) WhereSiù (CH2) 3ùOH / sl sùo Me \ / I (71) o 'oo \ if o ~ Where Bu - t Me Ph Ski t-BuùO --- Si --- CH22ùCH2 - `S H I 1 Me, -SH- CH- (CH2) 3ùCH2 Where Bu - t (73) Fife ( 74) where Me (75) where And (76) E n-Buù0- °°°°'ùù222222222222222222 SE SE SE33333333333333333333 SE SE3 SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE ((((((((((((((((((((((((((((((((((((((((((( ) Where and HM (78) EE n-Buù0 --- 'Si Si Si' '' '222222222 SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH SH Où Où Où Où Où Où Où Où Où -SH whereBu-n where Me -Me --- H- CH2u (CH2) 16 CH2H1 (81) CH2O-CH2 CH2 CH2 CH2 CH2 CH2 CH2 (80) where Me Me 0 °°° S i-°° CH 2ù (CH 2) 16 ù CH2ù SH nù Me (82) (79) Where And Where:) Where: And ù (CH 2) CE32 --- S) '(83) where Me (CH2) CH2i (CH2) where CH2 (CH2) CH2 (CH2) CH2 (CH2) where ## STR5 ## wherein (e) ## STR2 ## and ## STR5 ## where CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 EtuChuBu-n 1 And (88) Me Where SiMe 3 1 WhereChi and Mea Siiu --- CH2uCH2uCH2uOH 1 ~ J --- Siu CH2uCH2 --- SH 0iSiMe3 1 1 (90) Mei CH Where CHi And 1 1 And Me (89) ## STR2 ## wherein If Li (Si) Si (Si) Si (Si) Si (CH 2) 3 SiH (CH 2) 3 SiH O Si (CH 2) 3 SiH / O CHy 2 H n-Pr (CH 2) ) 3SH H5u (CH2) 3 \ O \ n -Pr 5i nP O Pr-n OI Pr -n O / 1I Pr -n O SiiO Si O SiiO Si SiOO SiiiO Pr-n I n_pr I n_pr I n_pr I, O 0 ~ 5 O / f S \ \ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ -Pr n-Pr \ \ Si OO H5u (CH 2) 3 i N. Pr-n I ~ Pr-n O Pr-n si'- Pr-n If (npr II nprn I n Pr / Si \ ff 0u5I \ / n Pr / Si Cù5 I / f (O Si O Si H i ' :: 2ùCHyùCE2 \: _i, .ùCHyùC: p2 \ Pr-n Pr-n (95) (96)) ù S iMe 3 OH f 3 t5e --- 5'i --- CH2ùCH2ùSùCH2ùCH2ùOùCH2ùCHn-- agi Meù Siù CH2ùCH2ù ^ .H2 °°° SH I CH Where S iMe 3 (97) (98) Me Me 0 ùMe I Where ((CH2) 3ù5H I Me H2 C = CHù Siù CH2 --- Si --- 0E2ù CH2ù 0E2ù SE- " ## STR1 ## wherein (CH) CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 0 Me Me (101) ) (102) Where M is Si Si CH2 ~, where (CH2) where CH2 + SM Me °° - Siù CH2ù (CH2) where CH2 + SM is Me (103) (104) where Me Me CN z - Si - • Qi Me If CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 CH 2 (107) 2- [1-a 2 -α: -wm Me (109) n 2 -m-1-m-2-n-m-1 Me (111) Me Me 0 Me Me CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 W (106) where Me-r: a2 box-m: - a (108) Mei-SiiMe-m2-m-n2-n2-m (110) where And Me Sii ae-n2-m2 e + ( ## EQU1 ## ## STR5 ## wherein: ## STR2 ## ## STR5 ## wherein CH.2 Where Ac (120) 9 OFt Me HO --- Siu CH2uCH2uCIi2 SIi WhereSiSiM Me Me OH III (121) O SiiOiSiuCh 2iSi MeiiiiiuPoe II Me Me II oiSiùMe Me I WhereSiù ^ Ii2 3H I Me (122) Where SiùMe Me Me Where Bu-n Me W I ùSiùMe O Siù (CH2) gùSH Phù O- °° Siù CH 2ù CH2ùCH 2- °°° SH IIIO SiùMe Me Where Phâ I (124) Me CH2 '- SH Meù Siù CH2ù CH2ù I Me (123) Phu Where Ph Me Me Me 1 1 C --- CH2uCH2uCH2 --- SH 1 HSuCH2ùSiùOiSiùOiSiùCHiùSH Where Ph 1 1 1 (125) Me Me (126) Me MeSiùMe Me MeOO S CH2ùCH2ùOH2 SH 1 1u (127) WhereSiùMe O SiùMe Where SiMme Me O SiùMe WhereSiMe3 1 Where SiMme Me 1 Me CHIùCH2ùCfi3 - r-k1 Where S iMe 3 (1 28) N n. Me Me OI --- SiWCH2ùCH2ùCi 2, °° -8H 1 Si Me Yr CH2ùCH2ùCH2 --- SH (130) (129) 2928087 110 M 1 HS-2-c 2-2-Si-2-Pr n - -s1- m2-c 2- 2- ~ Me Mo (131) (132). ## EQU1 ## where: ## EQU2 ## w -Si- 2- ~ 2-2 Meù e: - ~ 2- ~ 2- NH I _-CHù ~ 2- _- ~ 2 a, - a (137) Meù CHùMe (138) OMe oùMe _ I _ MeùSiù0ù SiiMe C112 1 s, c CH 2 (140) Siù- (m2) 3-s-2-m 2 -m 2 -CH 2 CH 2. I / I. Z oo-o w-O O Rai SiiO / _ e-eH e, e - e e. 2- 2 e \ 1 0u / Se / "1 _ - ~ ~~ - _-0 m ~ n2- a2- e / o - t Siù m ue 2- m: - m (Q ~ j 0-- ( 142). (2) 3 / \. (2). (1) -cens-z-CH2u-cens- (\ (144) c 2 ~ c2-these c ~ - c2- ~ BI- m2-c2- ~ 2- ~ - ~ 2- ~ 2- ~ aùa: -cesw 6- a: -a O ~ 2- ~ 2 cc 2- ~ (146) (145) 2928087 111 Me O ~ -Sm: -tee-m ## STR1 ## ## STR2 ## c3 (149) US) o If e3 O and 1 1 Meù SiùCù 2ù pùiùC 2ù 2ù A 1 1 M If e3 (151) gs) 2 _S! -o (y, -_ / "He has' - (C2 ## STR2 ## where ## STR1 ## wherein ## EQU1 ## where: ## EQU1 ## where and where ## EQU1 ## where ## where ## EQU1 ## (CH7) CH 2) 9 -3- [α] -α-Æ-α-C 2 -α-α-Æ 2a-O-α-Æ 2 -m 2 -m 0 (Æ 27 -O- (CH 2) 9 - (159) Ub) o2 Me Me / Me 1 1, z, `• ~~~~ ^ y ,,. WhereiMe O Sii (CH2) 4iSH 1 1 1 O Sii Me Me 0 Me Mo (162) Where Si Me Me Where SiiMe MeiSiu (CH2) 3uCH2u SH 1 Me (161) Me Mo. the HSu (CH2) 8iSiùO Si • --- C112ù (CH2) 6ù --- • Ski G SiùMe Me 1 1 Me M & Gù Si --- O Siù (CH 2) 4SH 1 (163) MeùSiù Yo Me I (CH₂) ù0E 2-°° SH I Me (164) Me MeI 1 HS HS (CH₂) ù SiOO ° °°??, - C₁₂CH₂CH₂ùCH₂ °° - SH HSù (CH2) ùùCE2 --- --- Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si Si CH CH CH CH CH CH CH CH CH CH CH CH 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 165 3e 165 165 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e 3e --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- (CH CH CH CH --- --- --- ## EQU1 ## where is Me2 where CH2u02CH2uCH2uCH2uM2 where CH2u06CH2u06CH2u2Si06CH2uCH2uCH2uCH2u2SiSi2SiSi2iSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSiSi? Where ## EQU1 ## where ## EQU1 ## .E2ùCH2ùSùCH2ùCE32 --- E3 EI My CH2ùMe (171) (172) Where CH2ù CH2ù OMe 1 H2C = CM i --- CH2ùCH2 --- SH MeOùCH2ùCH2ùO • °° • • If CH2ùCH2ù0E2 • °° -SE ~ 1 1 Me. Where CH 2 CH 2 O (173) 113 (174) (CH 2) 3 · HS Si · Ph MeO (177) Me (176) (178) (175) CSIÿùCH2ùSùCH2ùCH2ù 3H f J- °°°° Si \ 0 C (179) where CH2ù CH2ù OEt Et0ùCH2ùCH2ùO SiùCH2ùCH2ùCH2- Hù where CH2ù CH2ù OEt (181) Me CH2ùCH2ùSù ^ _32- °° SH Me` / .. OCN (180) If ## STR2 ## where ????? ????? ????? ????? ????? ????? ????? ????? ????? 3 Where is MeSiMe3 Me WhereSi whereSiiMe (CH2) 3sSiOiSiuMe (CH2) 3SH MeS'S CH2uCH2u 433 MeiuSiuM (CH2) 3SiSiSiSiuSiuSiuMi SiMM Me Me Me 1 MeSiSiSiu (CH2) 3SiSiSiSiM 3 WhereSiuMe (CH2) 3iSH Ma- ° - SI.u CH2uCH2u CH2u SH (CH2) 3i SH SiSiR Me WhereSiu (CH2) 3SH 1 Where SiMe 3 Me Me (183) 1 RuiOiSiu (CH2) 3iSH 1 Where SiMe 3 (184) 114Me Mei SiiWiu Siu CH2u SH 1 Me3SiiiO MeiSiuO Me Me Me 1 1 1 1 1 Mei5i O MeiSiuOiSiuO Sii CH2iSiSi MeiSiSiSiSiSiSiSiSiSi1i MeiSiUi oi Sii CHiSiSiSiSi Where SiMe 3 (185) Where Mei Where °° CH 2ù CH 2 ù Sù CH 2 ù CH 2 °°° (ùMe Sù C332 ù 0332 - Me (186) where And E ti0 --Si --- Cif2u (CH2) 3iSH where And 0 ù Me (187) (188) Where (CH2) 5iSH Io Me Mef) CH2uCH2uNiuCu (CH2) 5SH 1 1 Meii0 - 'Si -' ## STR3 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## Where CH2 ù CH2u 311 Where Pr-i (193) where Pr-n n-PrùO 'S Si CH2u CH2ù 0E2 where SH where Pr-n (195) where HSu CH2u CH2ù CH2ù CH2u Hi.ù CH2ùCH2ùCH2W 513 CH2ù CH2ù CH2ù SH Where And Yin Siù CHCH2ù CH2ù CH2ù CH2ù SH Where And (190) (192) where Pr-n n-PrùOiSiùCH CH2ù3H C) ù Pr-n (194) Where And Where 0 Where CH2ù CH2ù0ù CH2ù C'.1, Where and (196) wherein CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 -O-O-2-c2-C2- where Et (- (c2) 7- (199) (200). 2- 2-m \ ÿ y ° If And 01-125 5 ù 2ù And Me α2ûE ° (201) ¿C ù 2C ù (202) Where And HC = C ù m2ùs: ù 2ùc2ùG2ù3H E 0 Sù m2ù (CHww ù a2u a And (203) (204) o o Ac Ac Ac Ac Si Si Si Si Si Si Si Si Si Si Si ((((((((205) Meù Siù m2ùcm26ù m: ù asu where Gù m2ùc2ù CH2 _ where s -n (208) (207) o Bmea 1 Meù s1 ~ 2ùc 2ùc2ùCH2 A Mù Siù0ù Siù m: ù 1 o Bmea (209) (21 0) And O Bmea And where are you? Where are you? Where are you? Where are you? Where are you? Where are you? Where are you? Where are you? Where are you? Where are you? c 2- 2- 2 o-- # Mm 2m 2 G (216) - Hi - (215) / 7, where M, M, 6, O, Ph, Ph, Si 2, - 2 -: # / where smea o / 77 Ph / ## EQU1 ## where m.sub.i.sub.i.sub.i.sub.i.sup.i.sub.i.sup.i.sup.i.sub.i.sub.i.sup.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sup.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.M.sub.i.sup.M.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.M.sub.2 where m.sub.i.sub.i.sub.M.sub.i.sub.M.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.i.sub.M.sub.2 (2. % e-2 ~ C e2 C -mC -C-mC-α-Gm2-Æ2-m2-cm33-m-Æ2-m2-m • 2 HC1 2 x1 (222) (221) Me 0 Me 1 <': e I wa-a2 -_- 2- ~ _- 2-mute m ^ - m2-n-n2- _- n2- n2- _- 2- a, - _-o (223) .2! (224) ~~ s = - /, -az-me -w - Siùa, the ~~:, Hi e2- e, (226) (225) Me 1 e = - ~ 2 ~ 2- m- ~ 23- _- ~~ C2- Siù c, - ~ 2- m: - m Me ~, - ~ 2- ~ 2- m ( 227) (228) Me aw ~ ~ - w- - ~ m- ~ --- ~ m: - Siù m2- ~ 2 _-ces2 3- _- ~ 2- 2 a 1 (230) (229) 117Me Meù ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## ) Me MeCH2uS CH CH2uCH2uCH2 °°° SH Me (237) CHâùMe HSùCH2ùCH2ùCH2 --- Si --- 'ÿM2ù CH2ùC'X2ù3l- ".. CH2ùMe (231) (232) CùEt.i ---' CH2ùCH2ùCli 3li oIl 234) Me Me 1 HOù CH2 ù CHù CH 2 --- Si-- (236) CH 2ù MeùCH2 '°°° Siùi: 3i2ùC (2ùSE3 CH 2ù Me (238) MeùCH2- °° -Si CM2ùCH2ùCH2ùSH Me. And where C? I? - • C2u CH 2 --- • SH where And (240) (239) Me Me 1 Me: ù Si • °° '0 SiùCH2' °°° SH 1 Me Me (241) ) CH2 ù CH 2 °° - 2H (243) Me; r HS --- CI-12ù Siù J ---: 6 i --- 'CH2ù SH Me (242) Me Where ## STR5 ## wherein Y (M) m (CH 2) n CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 --H: e HC1 (245) HC1 (246) 8 Me Me Me HSiiCH2uSiùWhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Yes, but please tell me, Where is Me Where Me Where Me? Where is Siu Where Siu Where Sii Where Sii O 1 1 1 1 Me Me Me Me (247) 1 Me Where Sium Me 1 Where Sium 1 Me Where Sium Me Where If (## EQU1 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## where ## STR2 ## SH Me (249) (250) & 7 ~ Si °°CH2ùCH2ùC3i2-> 3i Ple Me Where And 1i3S C1-I2ùCHùCH7 ---- Siù0ùEt Where And (251) (252) Where E? ## STR1 ## where (CH2) ## STR2 ## where ## STR2 ## where ## STR2 ## °° - siù CE3 2ù CH2ù CH2ù CH2ù 83 CH2ùMe (255) (256) Me C ^ and 1 H '°°' 'CH2ù CHùù S Sn° ° N5e where And (257) (258) Mr HSùCH2ùCH2ùCH2 --- Si ## STR5 ## wherein CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (260) (259) 9 MeiSiu2iu2i m2 (2) (271) Meiu2iu2i2i2i2i2i2i (273) Cr-Me2i2i2i2i1i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i2i1i2i2i2i2i2i2i2i2a2a2a2a2a2a1a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a3a2a1 Where And M-Siù m! Ùc 2, ù _ù CH2ù m: ù + _ And (270) Me, And CH2ù Siù CH 2ù And CH2ù has: ùm (272) Æ2ù CHù where SHùù And 1 qù m2ù CHùnù CH2ù ù2ù has: Where and where did he moult? (261) Mei Siu, where a2u has _ (263): C2u CHu c2u SiuMe (265) Meiu (1)) (267) Meiu2u2u2 CM: Me (269) (264) (264) 266) (274) 0..CLMF: 12. Composition according to any one of claims 1 to 10 wherein the thiol-functional silicon compound is (3-mercaptopropyl) -triethoxysilane. 13. A method of dyeing keratinous fibers comprising applying to the fibers a dye composition as defined in any one of the preceding claims. 14. A method for dyeing keratinous fibers comprising, in a first step, applying to the fibers a dye composition comprising one or more dyes with disulfide function (s) or function (s) thiol (s) protected (s) as defined in any one of claims 1 to 8 and, in a second step, to apply one or more silicon compound (s) function (s) thiol (s) as defined in any Claims 1 and 9 to 12. 15. The method of dyeing according to claim 13 or 14 wherein the keratinous fibers are dark and have a pitch of less than 6, preferably less than or equal to 4. Me Me 1 1 1 0 0SiùMe O SiùMe OSiùMe Me 1 1 1 1 1 1 OSiùMe O SiùMe O Siù CH2ù Sù CH2ùCH2- SH Where if Me Me Me WhereSiùMe Me Where SiùMe Me Where siù Me Meù Siù CH2ù Sù CH2ùCE ME (275) ouMe Meù0ù Si-- CH 2ù CH2ùCH2 --- SH Where and Where? U-C112CH2uCH2uNHiCH2uCF32 °°° -SM GuiT Where Where MeiO SiiiCH2UCH2 ---- SH Where Me (276) (277) (278) 51 16. Use for dyeing keratinous fibers of one or more direct dye (s) with disulfide function (s) and one or more functionally functional silicon compound (s) thiol (s). 17. Use according to the preceding claim for lightening dark keratin fibers having a pitch of less than 6, preferably less than or equal to 4; one or more direct dye (s) with disulfide function (s) or protected thiol function (s) and one or more silicon compound (s) with a function (s) thiol (s). 10