EP2001559A2 - Reductive colour removal - Google Patents

Abstract

The invention relates to agents which contain a combination of special sulphinic acid derivatives of formula (I) in a carrier, wherein M represents a hydrogen atom or an equivalent of a mono or polyvalent cation, R is derived from a peptide or represents a group according to one of the formulae (II) to (VI), (for the meanings of the remaining substitutients see claim 1) and at least one compound comprising at least one quaternary nitrogen atom. Said agents enable a durable decolouration of the dyed substrates to take place without darkening the decoloured substrate. The substrate structure is not damaged during the decolouration process.

Description

"Reductive color print"

The invention relates to compositions for reductive color printing, which in addition to organic sulfinic acid derivatives at least one compound having at least one quaternary nitrogen atom. These color proofing agents are suitable for the decolorization of colored substrates such as paper, textiles and, in particular, keratin-containing fibers, for example human hair. Likewise, a process for decolorization of colored substrates, as well as the use of said color proofing agent is the subject of the invention.

Colored or printed materials have always exerted a special charm on humans. This fascination still exists today. Either a coloring provides a fashionable component, for example in the form of dyed textiles or dyed hair. Or the coloring, for example in the form of a print, is used for the transmission of information or art. Dyeing promotes cultural and social identity and is also a craft that has become a lucrative and innovative industry over the years.

In dyeing, the dye is transferred to the substrate by adsorption to the surface, by diffusion, by formation on and / or in the substrate, or by chemical bonding. First, natural dyes such as purple or carmine were used. Through the rapid advances in science, tailor-made synthetic dyes have become available over the years for each application. For dyeing, for example, paper, textiles or keratin fibers, either direct dyes or oxidation dyes are generally suitable. Oxidative dyes are formed by oxidative coupling of one or more developer components with each other or with one or more coupler components. Coupler and developer components are also referred to as oxidation dye precursors. The oxidative coupling preferably takes place during the dyeing process so that the dye precursors can diffuse into the substrate and the dye forms in the substrate. The size of the resulting dye molecule makes it difficult to wash out of the substrate. Ai Eniwickierkomponenten are usually primary aromatic amines with another, located in the para or ortho position free or substituted hydroxy or amino group, diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazolone and 2,4,5,6-tetraaminopyrimidine and its derivatives used.

Specific representatives are, for example, p-phenylenediamine, p-toluenediamine, 2,4,5,6-tetraaminopyrimidine, p-aminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2- (2,5 Diaminophenyl) ethanol, 2- (2,5-diaminophenoxy) ethanol, 1-phenyl-3-carboxamido-4-amino-pyrazol-5-one, 4-amino-3-methylphenol, 2-aminomethyl-4- aminophenol, 2-hydroxymethyl-4-aminophenol, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triamino-4-hydroxy-pyrimidine and 4, 5-diamino-1- (2-hydroxyethyl) pyrazole.

As coupler components m-phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones, m-aminophenols and substituted pyridine derivatives are generally used. Suitable coupler substances are in particular α-naphthol, 1, 5, 2,7- and 1, 7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, m-phenylenediamine, 2,4 -Diaminophenoxyethanol, 2-amino-4- (2-hydroxyethylamino) -anisole (Lehmann's Blue), 1-phenyl-3-methyl-pyrazol-5-one, 2,4-dichloro-3-aminophenol, 1, 3-bis - (2,4-diaminophenoxy) -propane, 2-chlororesorcinol, 4-chlororesorcinol, 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol, 3-amino-6-methoxy-2-methylamino pyridine and 3,5-diamino-2,6-dimethoxypyridine.

Direct-acting dyes are generally understood to be dyes which are already preformed before the beginning of dyeing and are applied to the substrate. Important representatives of this class of dyes are, for example, triphenylmethane dyes, azo dyes, anthraquinone dyes or nitrobenzene dyes, which may each carry cationic or anionic groups.

In addition to dyeing, an important technical field is the removal of dyes. This generally refers to the removal of dyeings or prints by washing out, chemical modification or destruction of the dye. The oxidative or reductive discoloration of dyed materials finds particular application in the decolorization of textiles or hair.

Oxidative discoloration usually leads to good results. However, the structure of the substrate can be chemically altered by the strong oxidizing action of the decolorizing oxidizing agent. This goes with an undesirable physical change of the Substrate accompanied. For example, textiles or hair can become brittle or even break, especially if they are discolored several times. The visual impression, the feel as well as the durability of the substrate are negatively influenced.

Less influence on the substrate structure, in particular on the structure of keratin-containing fibers, take reductive decolorizing agents. The reductive decolorizing agents scarcely discolour the natural hair color but have a reductive effect only on the dyes applied by dyeing. There is thus hardly any whitening of the hair. However, the reductive decolorants require an improvement in decolorization performance.

Predominantly, one uses reductive sulfur compounds for decolorization. As is known, dithionites or derivatives of 1-hydroxymethylsulfinic acid or of 1-aminomethylsulfinic acid are suitable as reducing agents.

From the document US Pat. No. 3,892,845, the person skilled in the art is aware of reductive color stripping agents with the aid of which colored keratin-containing fibers can be decolorized. As the reducing agent, 1-hydroxymethylsulfinic acid or a salt thereof is contained in the decolorizing agents. According to DE-OS-1 617 829, the addition of 1-hydroxymethylsulfinic acid to oxidative decolorizing agents containing hydrogen peroxide and persulfates enhances their bleaching action.

According to EP-A-1 079 018, aminoalkanesulfinates of the formula R ¹ _3-Z N (CR ² R ³ -SO ₂ -M) _Z (R ² , R ³ = hydrogen or (C 1 to C ₄ ) -alkyl are suitable ) for the partial decolorization of dyed or printed with vat dyes or sulfur dyes textiles.

According to WO-A1-99 / 18067, 1-hydroxyalkylsulfinic acids or 1-aminoalkylsulfinic acids which carry a carboxy group, a sulfonic acid group, an acyl group, an aminocarbonyl group or an alkoxycarbonyl group are suitable for decolorization of colored substrates. Said derivatives have a comparable or better decolorizing power as the 1-hydroxymethylsulfinic (vidβ supra). W0-A1 -02 / 30369 describes the discovery that with the sulfinic acid derivatives of WO-A1 -99 / 18067 keratin-containing fibers, such as, for example, hair, can be decolorized. Further sulfinic acid derivatives which are suitable for decolorizing keratin-containing fibers can be found in the publications W0-A1 -03 / 026597 and WO-A1-03 / 41668.

Substrates which have been reductively decolorized with the sulfinic acid derivatives of the prior art experience some undesirable darkening some time after color removal. The object of the present invention is to provide reductive decolorizers which decolorize the substrate permanently without darkening. The substrate structure should be spared. Furthermore, the reducing agents used in the decolorizing agents for a cosmetic use should be physiologically acceptable and toxicologically harmless.

Surprisingly, the object is achieved by means which comprise a combination of at least one of the organic sulfinic acid derivatives according to the invention with at least one compound containing at least one quaternary nitrogen atom. The discoloration of colored substrates, such as paper, textiles or keratin fibers, in particular human hair, succeeds very well without darkening to a high degree after the decolorization process, as is caused by the use of the sulfinic acid derivatives alone. The compositions according to the invention are particularly suitable for the fiber-sparing decolorization of keratin-containing fibers.

By keratin fibers are, for example, wool, furs, feathers and especially human hair to understand.

A first subject of the invention is therefore compositions comprising in a carrier at least one sulfinic acid derivative of the formula (I)

O Il MO-S-R (I)

wherein

M is a hydrogen atom or one equivalent of a mono- or polyvalent cation, R is derived from a peptide or is a radical according to one of the formulas (II) to (VI),

in which mean Y and Y 'independently of one another are a hydroxyl group, an -NH ₂ group or a group -NR ³ R ⁴ , where R ³ and R ⁴ independently of one another represent a (C ₁ to C ₆ ) -alkyl group, a (C ₂ to C ₆ ) -Alkeny1gruppe, a (C ₁ -C ₆₎ - hydroxyalkyl group, a (C ₂ -C ₆₎ -polyhydroxyalkyl group, an aryl group or an aryl (Ci to C are ₆₎ alkyl group,

M 'independently of M the characteristics listed under M,

X is a direct bond or an organic radical with two free ones

valences,

R ¹ and R ¹⁴ independently represent a hydrogen atom, a (C ₁ to C ₆ ) alkyl group or a carboxyalkyl group - (CH ₂ ) _m -COOM ", in the M" represents a hydrogen atom or one equivalent of a monovalent or polyvalent cation and m is the number 0, 1 or 2,

R ^{2 is} a hydrogen atom, a (C ₁ to C ₆ ) alkyl group, a carboxyalkyl radical - (CH ₂ ) n-COOM '"with

M ¹ "= hydrogen atom or one equivalent of a mono- or polyvalent cation and n is an integer 0, 1, 2, 3, 4, 5 or 6, a (C ₁ to C ₆ ) -alkyloxycarbonyl radical, a sulfonic acid group, a carbamoyl group, N ₁ N-DJF (C ₁ to C ₆₎ alkyl] carbamoyl group, N ₁ N ₁ N-TrJf (C ₁ to CeJ-alkyllammonium ^ _C! -C ₆₎ alkyl, carboxy (C ₂ to C ₆ ) -alkenyl group, a cyano- to C ₆ ) -alkyl group or a (Ci to C ₆ ) -alkoxycarbonyl- (C ₁ to C ₆ ) -alkyl group, an aliphatic or aromatic heterocycle, which may be substituted, or a radical according to formula (IV) or

R ^{2 forms,} together with R ¹ and the remainder of the molecule, an aliphatic 5-, 6- or 7-membered ring which contains at least one cationic, quaternized nitrogen atom as heteroatom, the cationic charge optionally being compensated by one equivalent of a mono- or polyvalent anion becomes,

R ^{7 is} a carboxy group, a sulfonic acid group, a (Ci to C ₆ ) -

Alkoxycarbonyl group, a sulfonamide group, a cyano group, a nitro group, a C ₁ -C ₆ -yX (C ₁ to C ₆ ) alkyl group, a carboxy (C ₁ to C ₆ ) alkoxy group or a group -N ⁺ R ¹ R ¹¹ R ¹ ", where R ^1, R" and R ¹ "are independently a (C ₁ to C ₆₎ - alkyl group, a (C ₂ to C ₆₎ alkenyl group, an aryl (C-ι-C ₆₎ - alkyl group or a (C ₁ to C ₆ ) hydroxyalkyl group, R ⁸ and R ^{9 are} independently a hydrogen atom, a (C ₁ to C ₆₎ - alkyl group, a (C ₂ to C ₆₎ alkenyl group, a (Ci -C ₆₎ - hydroxyalkyl group, a (C ₂ to C ₆₎ Polyhydroxyalkyl group, a (C ₁ to C ₆ ) alkoxy group, a hydroxy group, an amino group, a carboxy group, a nitro group, a cyano group or a halogen atom,

R ^{10 is} a (C ₁ to C ₆ ) alkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, a carboxy (C ₁ to C ₆ ) alkyl group, a carboxy (C ₂ to C ₆ ) alkenyl group, a (Ci to C ₆ ) alkoxycarbonyl group or a (C ₁ to C ₆ ) alkoxycarbonyl (C ₁ to C ₆ ) alkyl group,

R ¹¹ , R ¹² and R ¹³ independently of one another represent a hydrogen atom, a (C ₁ to C ₆ ) -

Alkyl group, a (C ₂ to C ₆₎ alkenyl group, a perfluoro _(C! -C ₆₎ alkyl group, a (C ₃ -C ₆₎ cycloalkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, a (C ₁ to C ₆₎ - hydroxyalkyl group, alkyl group, a (C ₂ -C ₆₎ -polyhydroxyalkyl group, a ArVl- (C ₁ to C _6), a carboxy (C-ι-C ₆₎ alkyl group, a carboxy- ( C ₂ to C ₆ ) alkenyl group or a (C ₁ to C ₆ ) - to C ₆ ) alkyl group, with the proviso that in formula (II) R ¹ and R ^{2 are} not simultaneously a hydrogen atom. in combination with at least one compound possessing at least one quaternary nitrogen atom.

If the compounds of the formula (I) contain at least one chiral center, it is to be understood that all stereoisomers alone and mixtures thereof, in particular their racemates, are according to the invention.

The compounds of the formula (I) can be present in the form of the free acid or salt thereof as the inner salt, especially if, in addition to the sulfinate group of the formula (I), a cationic substituent (see definition R ² and R ⁷ ) is contained in the molecule.

When the compound of the formula (I) is present as an acid, the radicals M, M ', M "and / or M ¹ " represent a hydrogen atom. The fragments MO of the formula (I), M'O- of the formula (III) and M ¹¹ O- or M ¹¹¹ O- according to R ¹ or R ² from formula (II) in this case form a hydroxy group. When the sulfinic acid of the formula (I) is in the form of a salt, at least one of the radicals M, M ', M "or M ¹ " is for one equivalent of a mono- or polyvalent cation. The monovalent or polyvalent cation M ^" with a charge number z of one or higher serves only for reasons of electroneutrality to compensate for the simply negative charge of salt formation

O

Il OSR present sulfinate fragment of formula (I) or mutatis mutandis from formula (III), or the carboxylate fragments of the radicals of R ¹ or R ^{2 of} the formula (II). The equivalent of the corresponding cation to be used is 1 / z. The fragment MO of the formula (I) or the fragment M ¹ O of the formula (III) in the case of salt formation for the group: 1 / z (M ^{z +} ) O- or the group: 1 / z (M ' ^{z +} ) O-. The same applies mutatis mutandis for M "and M ¹ ".

In principle, all cations which do not undergo a redox reaction with the remaining sulfinate fragment of the formula (I) are suitable as corresponding mono- or polyvalent cations. In particular, these are metal cations of the physiologically acceptable metals from groups Ia, Ib, IIa, IIb, IIIb, VIa or VIII of the Periodic Table of the Elements, ammonium ions, as well as cationic organic compounds with quaternized nitrogen atom. The latter are formed for example by protonation of primary, secondary or tertiary organic amines with an acid, such as with compounds of formula (I) in their acidic form, or by permanent quaternization of said organic amines. Examples of these cationic organic ammonium compounds are 2-ammonioethanol and 2-trimethylammonioethanol. M, M ', M "and M ¹ " are preferably each independently a hydrogen atom, an ammonium ion, an alkali metal ion, half an equivalent of an alkaline earth metal ion or half an equivalent of a zinc ion, more preferably a hydrogen atom, an ammonium ion, a sodium ion, a potassium ion, 14 calcium ion, ^Λ A magnesium ion or V. zinc ion.

The equivalent of the optionally present mono- or polyvalent anions according to formula (I) is described analogously to the definition of the cation equivalents to maintain the electroneutrality by formulating a stoichiometric coefficient of less than 1 before the name of the anion. The said anions are subsequently symbolized by an ^' in the definition below. They are preferably selected from halide, Vz sulfate, hydrogen sulfate,! 4 carbonate, bicarbonate, 1/3 phosphate, 14 hydrogen phosphate, dihydrogen phosphate or p-toluenesulfonate. The anion is particularly preferably chloride, bromide, p-toluenesulfonate or hydrogen sulfate.

According to the invention, those sulfinic acid derivatives according to formula (I) are furthermore preferred in which the radicals Y of the formula (II) or formula (III) and Y 'of the formula (IM) independently of one another represent a hydroxy group or a group -NH ₂ . Sulfinic acid derivatives in which R ^{1 is} a hydrogen atom or a methyl group are preferred according to the invention.

The radical R according to formula (I) must be for solving the technical problem for one of the radicals described above, wherein it is preferred that R is a radical of the above formulas (II) to (VI).

If the radical R of the formula (I) is a radical of the abovementioned formula (II), then the preferred sulfinic acid derivative of the formula (Ia) according to the invention results from the formula (I) as the preferred first embodiment,

wherein M, Y, R ¹ and R ^{2 have} the meaning defined under the formulas (I) and (II). The aforementioned preferred definitions of the radicals M, Y and R ^{1 also} apply here, applied alone or together to formula (Ia), as being preferred.

It is according to the invention, when according to a preferred embodiment of the invention, the radical R ² according to formula (II) or formula (Ia) is an aliphatic or aromatic heterocycle, which may be optionally substituted. If the abovementioned selected aliphatic or aromatic heterocycles of this embodiment are substituted, these are preferably with at least one radical of (C ₁ to C ₆ ) -alkyl, (C ₂ to C ₆ ) -alkenyl, (C ₁ to C ₆ ) - Hydroxyalkyl, ArVi- (C ₁ to C ₆ ) alkyl, hydroxy, (C ₁ to C ₆ ) alkoxy, amino, di (C ₁ to C ₆ ) alkylamino, nitro, halogen, carbamoyl, sulfonamido, cyano or carboxamido , substituted.

In the context of this embodiment, it is again preferable to select the aliphatic or aromatic heterocycles of the radical R ² from thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, pyrazolyl, pyridyl, pyrimidinyl, pyrazyl, pyridazyl, benzimidazolyl, benzothiazolyl, benzoxazolyl, indolyl, Quinolinyl, quinoxalinyl or quinazolinyl, which may optionally be substituted, preferably with the abovementioned substituents, particularly preferably with at least one radical of (C ₁ to C ₆ ) -alkyl, (C ₁ to C ₆ ) -hydroxyalkyl, hydroxy, amino, (C ₁ to C ₆ ) alkoxy, carboxy, halogen, nitro or sulfonic acid. Particularly preferred sulfonic acid derivatives of this embodiment are compounds of the following formulas (Ia-1) to (Ia-4)

wherein

M, Y and R ^{1 have} the meanings defined under formula (I), Z ^{1 represents} an oxygen atom, a sulfur atom or a group NR ¹ , where R ^{1 is} a hydrogen atom, a (C ₁ to C ₆ ) -alkyl group, a C ₂ to C ₆₎ alkenyl group, a (Ci -C ₆₎ hydroxyalkyl group, or a ArVl- (C ₁ to C means ₆₎ alkyl group,

Z ² and Z ³ independently represent a group CH or a nitrogen atom, R ⁵ and R ⁶ independently represent a hydrogen atom, a (C ₁ to C ₆₎ - alkyl group, a (C ₂ to C ₆₎ alkenyl , a (C ₁ to C ₆₎ hydroxyalkyl group, a hydroxy group, a (Ci to _C6) alkoxy group, an amino group, a di (Ci to C ₆₎ alkylamino group, a nitro group, a halogen atom, a carbamoyl group, a sulfonamido group, a cyano group or a carboxamido group or together form a Benzanellierung, which in turn may be substituted.

The group NR ^ιv from radical Z ¹ forms an azandiyl group -NR ^IV in the ring of the heterocycle. The group CH of the radicals Z ² or Z ³ forms in the ring of the heterocycle a methanylylidene group = CH-, which of course may also be substituted by one of the radicals R ⁵ or R ⁶ .

If in the formulas (la-1) or (la-2) Z ^{1 is} an oxygen atom, Z ^{2 is} a group CH and Y is a hydroxy group, it is preferred according to the invention, if in the formulas (la-1 ) or (la-2) R ⁵ and R ^{6 are} not simultaneously a hydrogen atom. The aforementioned preferred definitions of the radicals M ₁ Y and R 'also apply here, alone or together, to formulas (Ia-1) to (Ia-4), as being preferred.

The benzanellation from the radicals R ⁵ and R ^{6 of} the formula (Ia-1) to (Ia-4), when substituted, is preferably at least one radical of (C ₁ to C ₆ ) alkyl, (C ₂ to C ₆ ) alkenyl, (Ci to C ₆ ) -hydroxyalkyl, ArVl- (C ₁ to C ₆ ) -alkyl, hydroxy, (C ₁ to C ₆ ) -alkoxy, amino, di (C ₁ to C ₆ ) alkylamino , Nitro, halogen, carbamoyl, sulfonamido, cyano or carboxamido substituted.

R ⁵ and R ⁶ according to the formulas (la-1) to (la-4) are particularly preferably a hydrogen atom, a hydroxy group, a (Ci to _C6) alkyl group, a (C ₁ to C ₆₎ alkoxy, (Ci to C ₆ ) - hydroxyalkyl group, halogen atom or nitro group.

When the radicals R ¹ and R ² according to formula (II) in the first embodiment form, together with the remainder of the molecule, an aliphatic 5-, 6-, or 7-membered ring which contains at least one cationic, quaternized nitrogen atom as heteroatom Charge is optionally compensated by the one equivalent of a monovalent or polyvalent anion, the following compounds according to formulas (la-5) and (la-6) are preferred,

wherein

Y means the definitions described under formula (I),

M means the definitions described under formula (I) or a negative charge,

Z ^8, Z ⁹ and Z ¹⁰ of these radicals a Azoniumdiyl group N ⁺ R ^V R ^VI with R ^V and R ^VI are each independently a (Ci -C ₆₎ - alkyl group, a (C ₂ to C ₆₎ Alkenyl group, a (C ₁ to C ₆ ) hydroxyalkyl group or an ArVl (C ₁ to C ₆ ) alkyl group, and the remaining of these radicals is a CH ₂ group, R ¹⁷ and R ¹⁸ are each independently a hydrogen atom, a (C ₁ to C ₆ ) alkyl group, a

Hydroxy, a halogen atom or a carboxy group, provided that one equivalent of a monovalent or polyvalent anion is present when M is not a negative charge. The CH _Σ group forms in the ring of the heterocycle a methanediyl fragment -CH ₂ -, which of course may also be substituted by one of the radicals R ¹⁷ or R ¹⁸ .

The aforementioned preferred definitions of the radicals M and Y also apply here, alone or together, to formulas (Ia-5) and (Ia-6), as being preferred. The condition described under the proviso describes the formation of an internal salt, which is also a preferred embodiment.

If the radical R ^{2 of} the formula (II) is a radical of the abovementioned formula (IV), then the formula (I) results in the sulfinic acid derivative of the formula according to the invention

(La-7).

wherein,

M, Y, R ¹ , R ⁷ , R ⁸ and R ^{9 have} the meanings given under formula (I).

There are those compounds of formula (la-7) according to the invention are preferred in which the radical R ⁷ is a carboxy group, a sulfonic acid group or a group -N ⁺ R ¹ R ¹¹ R ¹ ", R _^1, R" and R ¹ " independently of one another is a (C ₁ to C ₆ ) -alkyl group, a (C ₂ to C ₆ ) -alkenyl group, an ArVl (C ₁ to C ₆ ) -alkyl group or a (C ₁ to C ₆ ) -hydroxyalkyl group, and the radicals R ⁸ and R ^{9 represent} a hydrogen atom.

Further compounds of the formula (I) which are preferably used according to the invention are compounds of the formula (Ia-8)

wherein M, Y, R ¹ , n and M ¹ "have the meanings given under formulas (I) and (II) The aforementioned preferred definitions of the radicals M, Y, R ¹ , n, and M ¹ " also apply here , alone or together, is applied to formula (Ia-8) as preferred.

In addition, compounds of the formula (Ia-8) according to the invention in which Y is a hydroxy or amino group are preferred. Preferably, n in formula (Ia-8) is a number O ₁ 1 or 2.

If the radical R of the formula (I) is a radical of the abovementioned formula (III), then the sulfinic acid derivative of the formula (Ib) according to the invention results from formula (I) as a preferred second embodiment of the invention.

wherein M, M ', Y, Y', X, R ¹ and R ^{14 have} the meaning defined under the formulas (I) and (III). The aforementioned preferred definitions of the radicals M, M ', Y, Y', X, R ¹ and R ^{14 also} apply here, applied alone or together to formula (Ib), as being preferred.

The radical X is preferably an organic radical having two free valencies. Suitable radicals according to the invention are in principle all organodiyl radicals, such as, for example, aliphatic or alicyclic, aromatic or heteroaromatic diyl radicals. The said organic radical having two free valencies X according to formula (III) or formula (Ib) is preferably selected from the group consisting of optionally substituted radicals of arendiyl, heteroarylenediyl, alkanediyl, alkenediyl, cycloalkanediyl, cycloalkendiyl and di (( C ₁ to C ₆ ) alkylene) -substituted carbocyclic or heterocyclic groups which are aliphatic or aromatic. If the abovementioned selected radicals of this embodiment are substituted, these are preferably having at least one radical of (C ₁ to C ₆ ) -alkyl, (C ₂ to C ₆ ) -alkenyl, (C ₁ to C ₆ ) -hydroxyalkyl, ArVi- (C ₁ to C ₆ ) alkyl, hydroxy, (C ₁ to C ₆ ) alkoxy, amino, di (C ₁ to C ₆ ) alkylamino, nitro, halogen, carbamoyl, sulfonamido, cyano or carboxamido substituted.

It is particularly preferred according to the invention if the radical X of the formula (III) or of the formula (Ib) is an organic radical having two free valences selected from a (C ₁ to C ₆ ) alkanediyl group or from radicals of the formulas ( VII) to (Xl) is selected,

(VII) in which mean

R ¹⁵ and R ^{16 are} independently of one another a hydrogen atom, a halogen atom, a (C ₁ to C ₆ ) -alkyl group or a carboxy group, n is an integer from 0 to 6,

Z ^{4 is} a group CH ₂ , an oxygen atom, a sulfur atom or a group

NR ', with R' = hydrogen atom, a (C ₁ to C ₆₎ alkyl group, a (Ci -C ₆₎ - hydroxyalkyl group or a (C ₂ -C ₆₎ polyhydroxyalkyl group,

Z ⁵ , Z ⁶ and Z ^{7 are} independently a group CH or a nitrogen atom.

The respective groups CH or CH _{2 of} the radicals Z ⁴ , Z ⁵ , Z ⁶ or Z ⁷ may of course also be substituted according to the invention with all substituents according to the invention from the formulas (VII) to (XI) within the definition of the formula concerned.

If the organic radical having two free valencies X is selected from the formulas (VII) and (VIII), the radicals are 2-chloro-cyclopentane-1, 3-diyl, 2-bromo-cyclopentane-1,3-diyl, 2 Chloro-cyclohexane-1, 3-diyl and 2-bromo-cyclohexane-1, 3-diyl preferred representatives.

If the radical R of the formula (I) is a radical of the abovementioned formula (IV), the formula (I) results in the sulfinic acid derivative of the third embodiment of the formula (Ic) according to the invention,

wherein M ₁ R ⁷ , R ⁸ and R ^{9 have} the meaning defined under the formulas (I) and (IV). The aforementioned preferred definitions of the radicals M, R ⁷ , R ⁸ and R ^{9 also} apply here, applied alone or together to formula (Ic), as being preferred.

Particularly preferred radicals R according to formula (IV) ₁ are selected from 4-cyanophenyl, 4-carboxyphenyl, 4-carboxymethyloxy and 4-trimethylammoniophenyl. Is the rest R of the forms! (!) for a radical of the abovementioned formula (V), the formula (I) results in the sulfinic acid derivative of the fourth embodiment of the formula (Id) according to the invention,

O O

Il Il H ₁₀ MO-SCNR ¹⁰ (Id)

wherein,

M and R ^{10 have} the meanings given under formula (I). The aforementioned preferred definitions of the radicals M and R ^{10 also} apply here, applied alone or together to formula (Id), as being preferred.

If the radical R of the formula (I) is a radical of the abovementioned formula (VI), the formula (I) results in the sulfinic acid derivative of the fifth embodiment of the formula (Ie) according to the invention,

wherein,

M, R ¹¹ , R ¹² and R ^{13 have} the meanings given under formula (I). The aforementioned preferred definitions of the radicals M, R ¹¹ , R ¹² and R ^{13 also} apply here, applied alone or together to formula (Ie), as being preferred.

In the following, examples of the groups or radicals mentioned as substituents in the context of this application are mentioned. Examples of (C ₁ to C ₆ ) -alkyl radicals are linear, branched or cyclic (C ₁ to C ₆ ) -alkyl groups, preference being given to linear or branched (C ₁ to C ₆ ) -alkyl groups. In particular, the groups methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl are suitable. Examples of correspondingly suitable cyclic alkyl groups are cyclopentyl and cyclohexyl.

Examples of preferred (C ₂ to C ₆ ) alkenyl radicals are vinyl, allyl and butenyl. Preferred (C ₁ to C ₆₎ -alkylamines according to the invention are, for example, a methoxy or an ethoxy group.

The methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl, sec-butoxycarbonyl and tert-butoxycarbonyl groups are examples of (C ₁ to C ₆ ) alkoxycarbonyl groups; the methoxycarbonyl and ethoxycarbonyl groups are particularly preferred. The 2-methoxycarbonylethyl, 2-Eihoxycarbonylethyl, 2-propoxycarbonylethyl, 2

Isopropoxycarbonylethyl, 2-butoxycarbonylethyl, 2-sec-butoxycarbonylethyl, 2-tert-butyl

Butoxycarbonylethyl, 3-methoxycarbonylpropyl, 3-ethoxycarbonylpropyl, 3

Propoxycarbonylpropyl, 3-isopropoxycarbonylpropyl, 3-butoxycarbonylpropyl, 3-sec

Butoxycarbonylpropyl and 3-tert-Butoxycarbonylpropylgruppe are examples of (Ci to C ₆ ) -

Alkoxycarbonyl ^ C _! to C ₆ ) alkyl groups.

Examples of cyano- to C ₆ ) -alkyl groups according to the invention are cyanomethyl, 2-cyanoethyl,

3-cyanopropyl, 4-cyanobutyl and 5-cyanopentyl.

Furthermore, as preferred examples of a (Ci to C ₆ ) -Monohydroxyalkylgruppe a

Hydroxymethyl, a 2-hydroxyethyl, a 2-hydroxypropyl, a 3-hydroxypropyl, a 4-

Hydroxybutyl group, a 5-hydroxypentyl and a 6-hydroxyhexyl group. A

2-hydroxyethyl group is particularly preferred.

Examples of a (C ₂ to C ₆ ) -polyhydroxyalkyl group are the 2,3-dihydroxypropyl group, 3,4-

Dihydroxybutyl group and the 2,4-dihydroxybutyl group.

The methoxyethyl, ethoxyethyl, methoxypropyl, methoxybutyl, ethoxybutyl and the

Methoxyhexylgruppe are examples of inventive (C ₁ to C ₆ J-AIkOXy- (C ₁ to C ₆ ) - alkyl groups.

A preferred hydroxy ^ to C ₆ ) alkoxy group is the 2-hydroxyethoxy group. preferred

Aryl groups are phenyl, naphthyl and biphenyl.

Preferred heteroaryl groups are thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl,

Pyrazolyl, pyridyl, pyrimidinyl, pyrazyl, pyridazyl, benzimidazolyl, benzothiazolyl, benzoxazolyl,

Indolyl, quinolinyl, quinoxalinyl and quinazolinyl.

The trifluoromethyl and the pentafluoroethyl are preferred Pe ^ UOr- (C ₁ to C ₆ ) - alkyl groups.

Examples of halogen atoms are F, Cl, Br or I atoms, with Cl and Br atoms being very particularly preferred.

Preferred Ar ^ (C ₁ to C ₆ ) alkyl groups are benzyl and 2-phenylethyl.

The trimethylammonium and diethylmethylammonium are examples of a group

N ⁺ R ¹ R ¹¹ R ¹ ".

The 2-trimethylammoniumethyl is an example of an N, N, N-tri [(Ci to CeVakyllammonium ^ C _! To C ₆ ) alkyl group.

A preferred (C ₁ to C ₆ ) carboxyalkyl group is the 3-carboxypropyl group.

The other terms used are according to the invention of the given here

Definitions off. Very particularly preferred representatives of the suific acid derivatives of the formula (I) are the sulfinic acids according to the list below or salts thereof with one equivalent of at least one mono- or polyvalent cation:

Name: corresponding structure: 2-furyl (amino) methanesulfinic acid,

Amino (thien-2-yl) methanesulfinic acid,

Amino (1H-imidazol-2-yl) methanesulfinic acid,

Amino (1, 3-thiazol-2-yl) methanesulfinic acid,

Amino (1,3-oxazol-2-yl) methanesulfinic acid,

Amino (1 / - / - pyrrol-2-yl) methanesulfinic acid,

Amino (hydroxyl-2-yl) methanesulfinic acid,

Amino (hydroxyl-4-yl) methanesulfinic acid,

Amino [3-hydroxy-5- (hydroxymethyl) -2-methylpyridin-4-yl] methanesulfinic acid,

minofchinolin ^ -yljmethansulfinsäure,

1, 3-benzoxazol-2-yl (amino) methanesulfinic acid,

Hydroxy (thien-2-yl) methanesulfinic acid,

Hydroxy (thien-3-yl) methanesulfinic

(3-bromothien-2-yl) (hydroxy) methanesulfinic acid,

Hydroxy (1H-imidazol-2-yl) methanesulfinic acid,

Hydroxy (1H-imidazol-5-yl) methanesulfinic acid,

Hydroxy (1-meth> 1-5-nitro-1 h'-imido-2-yl) metnansulfinic acid,

Hydroxy (1, 3-thiazole-2-yl) methanesulfinic acid,

Hydroxy (1, 3-oxazol-2-yl) methanesulfinic acid,

Hydroxy (1H-pyrrol-2-yl) methansulfinsaure,

Hydroxy (hydroxyl-2-yl) methansulfιnsaure,

Hydroxy (hydroxyl-4-yl) methansulfιnsaure,

Hydroxy [3-hydroxy-5- (hydroxymethyl) -2-methyl-pyridin-4-yl] -methanesulfinic acid,

Hydroxy (chιnolιn-2-yl) methansulfιnsaure,

Hydroxy (chιnolιn-4-yl) methansulfιnsaure,

1H-Benzιmιdazol-2-yl (hydroxy) methansulfιnsaure,

HT ¹ OH 1, 3-benzothiazol-2-yl (hydroxy!) Methoxy acid,

1, 3-benzoxazol-2-yl (hydroxy) methanesulfinic acid,

1, 2-Dihydroxyethane-1, 2-disulfinic acid, HO OH

) (

HO-S,, S-OH

1, 3-dihydroxypropane-1,3-disulfinic acid,

Hydroxy {4- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

{2-chloro-3- [hydroxy (sulfino) methyl] cyclohexyl} - (hydroxy) methanesulfinic acid,

{2-chloro-3- [hydroxyl (sulfino) methyl] cyclopentyl} - (hydroxyl) methanesulfinic acid,

Hydroxy {5- [hydroxy (sulfino) methyl] thien-2-yl} methanesulfinic acid,

Hydroxy {2- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

Hydroxy {3- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

, 5-dihydroxypentane-1, 5-disulphonic acid,

-Hydroxy-4-sulfinobutansäure,

-Hydroxy-4-methoxy-4-oxobutan-1-sulfinic acid,

-Hydroxy-4-ethoxy-4-oxobutane-1-sulfinic acid,

-Hydroxy-4-sulfinopentanoic acid, OO

HO '^^ ^ C OH

OH -hydroxy-5-methoxy-5-oxopentane-2-sulfinic acid,

-Hydroxy-5-ethoxy-5-oxopentan-2-sulfinic acid,

-Hydroxy-4-sulfinobut-2-enoic acid,

-Hydroxy-4-methoxy-4-oxobut-2-en-1-sulfinic acid, OO

OH

OH -hydroxy-4-ethoxy-4-oxobut-2-en-1-sulfinic acid,

-Hydroxy-4-sulfinopent-2-enoic acid,

-Hydroxy-5-methoxy-5-oxopent-3-en-2-sulfinic acid,

Hydroxy-5-ethoxy-5-oxopent-3-en-2-su! Fiπsäure,

Hydroxy-5-sulfinopentansäure,

-Hydroxy-5-methoxy-5-oxopentan-1-sulfinic acid,

Hydroxy-5-ethoxy-5-oxopentan-1-sulfinic acid,

Hydroxy-5-sulfinohexansäure,

Hydroxy-6-methoxy-6-oxo-hexane-2-sulfinic acid,

-Hydroxy-6-ethoxy-6-oxo-hexane-2-sulfinic acid,

- [hydroxy (sulfino) methyl] benzoic acid,

- [amino (sulfino) methyl] benzoic acid,

{4- [hydroxy (sυlfino) methyl] phenoxy} -cssigsäure,

{4- [amino (sulfino) methyl] phenoxy} acetic acid,

3-Hydroxy-4- [hydroxy (sulfino) methyl] benzoic acid,

3-Hydroxy-4- [amino (sulfino) methyl] benzoic acid,

(4-cyanophenyl) (hydroxy) -methansulfinsäure,

(4-cyanophenyl) (amino) -methansulfinsäure,

(4-nitrophenyl) (hydroxy) -meth3nsu! Finsäure,

(4-nitrophenyl) (amino) -methansulfinsäure,

Salt of 4-hydroxy-1, 1-dimethyl-4-sulfinopiperidiniums with

An ^' as the equivalent of a mono- or polyvalent anion,

Salt of 1-allyl-4-hydroxy-1-methyl-4-sulfinopiperidiniums with

An ^" as the equivalent of a mono- or polyvalent anion,

4-hydroxy-1, 1-dimethylpiperidinium-4-sulfinate,

1-allyl-4-hydroxy-1-methylpiperidinium-4-sulfinate,

[(2-methoxy-2-oxoethyl) amino] (oxo) methanesulfinic acid,

[(Methylsulfonyljaffiinolmethansulfinsäure,

[(Trifluoroethylsulfonyl) amino] methanesulfinic acid, CF ³ V, OH

H

[(Phenylsulfonyl) amino] methanesulfinic

1-hydroxy-2- (trimethylammonio) ethansulfinat,

Hydroxy [4- (trimethylammonio) phenyl] methanesulfinate,

4- [hydroxy (sulfino) methyl] benzenesulfonic acid and

2- [hydroxy (sulfino) methyl] benzenesulfonic acid

2-hydroxy-2-sulfino-acetic acid

2-amino-2-sulfino-acetic acid NH ₂

^H ° -S ^Λ COOH O 2-hydroxy-2-su! Fino-propions3'jr8

2-amino-2-sulfino-propionic acid

3-hydroxy-3-sulfinato propionic acid-

3-amino-3-sulfinato propionic acid-

2-hydroxy-2-sulfinato acetic acid ethyl ester

2-amino-2-sulfinato-acetic acid ethyl ester NH ₂

O O

1-hydroxy-2-methoxy-2-oxoethansulfinsäure

2-amino-1-hydroxy-2-oxoethansulfinsäure

2- (dimethylamino) -1-hydroxy-2-oxoethanesulfinic acid I? ^H , OH

O O

Hydroxy (sulfino) methanesulfonic acid

Hydroxy (phenyl) methanesulfinic

Hydroxy (4-hydroxyphenyl!) Meth3nsu! Finsäure

Hydroxy (4-methoxyphenyl) methanesulfinic

For the preferred mono- or polyvalent cations of all salts of the aforementioned compounds, what has been stated above applies.

The sulfinic acids of the formula (I) used according to the invention are prepared, for example, from the reaction of dithionite with corresponding aldehydes or ketones analogously to the preparation according to WO-A1-99 / 18067.

The agent according to the invention preferably contains at least one sulfinic acid derivative of the formula (I) in an amount of from 0.01 to 20% by weight, particularly preferably from 1 to 20% by weight, based in each case on the weight of the ready-to-use agent.

Compounds possessing at least one quaternary nitrogen atom are, for the purposes of the invention, all chemical compounds which carry at least one quaternary, cationic nitrogen atom. These are also referred to as quaternary ammonium compounds. The quaternary nitrogen atom is vierbindig. Thus quaternary ammonium radicals and quaternary iminium radicals are included. The groups which bind to the quaternary nitrogen are all different from hydrogen and form at least three bonds to carbon atoms of organic radicals.

Said compounds possessing at least one quaternary nitrogen atom are different from the sulfinic acids of the formula (I).

The compositions of the invention preferably contain at least one compound having at least one quaternary nitrogen atom selected from the group consisting of compounds having a quaternary nitrogen atom, compounds having two quaternary nitrogens, compounds having three quaternary nitrogens, organic N-oxides and polymers derived from a monomer containing at least one quaternary nitrogen atom. In general, as well as for all members of the foregoing list, it is preferred that the quaternary nitrogen compounds be net cationically charged. The said In the latter embodiment, however, compounds do not present as uncharged zwitterion or even anionically.

The compounds possessing at least one quaternary nitrogen atom are preferably present in the composition according to the invention in an amount of from 0.01% by weight to 20% by weight, particularly preferably from 0.1% by weight to 5% by weight, in each case based on the weight of the ready-to-use agent.

Particularly suitable compound according to the invention, possessing at least one quaternary nitrogen atom, are compounds of the formula (Q1),

R ⁴ R ¹ -N ⁺ -R ²

R ³ X ^" (Q1)

in which mean

R ¹ and R ^{2 are} independently a linear or branched (C ₁ to C ₃₀ ) alkyl group, a (C ₂ to C ₃₀ ) acyl group or a group -A ¹ -A ² -A ³ -R ⁵ wherein

R ^{5 is} a linear or branched (C ₈ to C ₃₀ ) alkyl group, a linear or branched (C ₈ to C ₃ o) alkenyl group, a hydroxy (C ₈ to C ₃₀ ) alkyl group or an oligohydroxy (C ₈ - to C ₃₀ means) alkyl group, a ¹ represents a direct bond or a carbonyl group, a ² is a direct bond, represents a group NH or an oxygen atom, a ³ is a (C ₂ to C ₄₎ alkylene group or a (C ₂ to C ₄ ) -

Hydroxyalkylene group means

R ^{3 is} a linear or branched (C ₈ to C ₃₀ ) -alkyl group, a (C ₈ to C ₃₀ ) -

Hydroxyalkyl group, a (C ₂ to C ₃₀ ) acyl group, a (C ₂ to C ₄ ) hydroxyalkyl group or an Ar 1 - (C ₁ to C ₆ ) alkyl group, R ⁴ a (C ₁ to C ₄ ) alkyl group or a (C ₂ to C ₄ ) hydroxyalkyl group,

X ^"is a physiologically acceptable organic or inorganic anion.

R ⁴ is preferably a methyl, an ethyl, a benzyl or a 2-Hydroxyethylgru ppe according to formula (Q1).

Examples of a (C ₁ - to C ₄ ) -alkyl group are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl and tert-butyl. Examples of a (C ₅ - to C ₃₀ ) -A! Ky! Gruρρe are n-octyl, n-decyl, n-dodecyl, n-tetradecyl, n-

Hexadecyl, stearyl, behenyl, isostearyl and eicosyl.

Examples of a (C ₁ to C ₃₀ ) alkyl group are the aforementioned examples of the respective ones

Alkyl groups and n-pentyl, an isopentyl, n-hexyl and an n-heptyl group.

Examples of a (C ₂ to C ₄ ) alkenyl group are vinyl, allyl and butenyl.

Examples of a (C ₂ - to C ₄ ) -hydroxyalkyl group are a 2-hydroxyethyl, a 2-

Hydroxypropyl, a 3-hydroxypropyl and a 4-hydroxybutyl group.

Examples of a (C ₂ - to C ₄ ) -alkylene group is ethylene, propane-1, 2-diyl, propane-1, 3-diyl, and

Butane-1, 4-diyl.

Examples of a (C _{2 to} C ₄ ) -hydroxyalkylene group is 2-hydroxyethylene, 1-hydroxy-propane-1, 2-diyl, 1-hydroxy-propane-1, 3-diyl and 2-hydroxy-propane-1, 3-diyl.

Examples of a (C _r to C ₄ ) -alkylene group are methylene, ethylene, propane-1, 2-diyl, propane-1, 3-diyl, and butane-1, 4-diyl.

Examples of (C ₂ to C ₃₀ ) acyl groups are octanoyl, decanoyl, dodecanoyl, tetradecanoyl,

Hexadecanoyl, octadecanoyl and eicosanoyl.

Examples of linear or branched (C ₈ -C ₃₀ ) -alkenyl groups are 9-octadecen-1-yl, 9,12-

Octadecadien-1-yl, 9,12,15-octadecatrien-1-yl and 13-docosen-1-yl.

Hydroxy (C ₈ -C ₃₀ ) -alkyl groups are, for example, 2-hydroxydecyl, 2-hydroxydodecyl, 2

Hydroxytetradecyl, 2-hydroxyhexadecyl and 2-hydroxyoctadecyl.

As physiologically acceptable organic or inorganic counterions X according to formula

(Q1), for example, halide ions, sulfate ions, phosphate ions, Methosulfationen and organic ions such as lactate, citrate, tartrate and acetate ions into consideration. Preferred are

Methosulfate and halide ions, especially bromide and chloride.

Preferred representatives of the radical -A ¹ -A ² -A ³ -R ⁵ are according to the invention the groups

-COA ³ -R ⁵ and -C-NH-A ³ -R ⁵

Il

O O

in which the groups A ³ and R ^{5 are} defined according to formula (Q1).

Particularly preferred radicals -A ¹ -A ² -A ³ -R ⁵ are according to the invention a ω - [(C ₈ - to C ₃₀ ) alkanoyloxy] - (C ₂ - to C ₄ ) alkyl group

(R ⁵ = (C ₈ - to C ₃₀ ) -alkyl, A ¹ = carbonyl, A ² = oxygen atom, A ³ = (C ₂ - to C ₄ ) -alkylene group),

- an ω - [(C ₈ - to C ₃₀ ) -alkylamido] - (C ₂ - to C ₄ ) -alkyl group (R ⁵ = (C ₈ - to C ₃₀ ) -alkyl, A ¹ = carbonyl, A ² = Group NH, A ³ = (C ₂ - to C ₄ ) -alkylene group), a (C ₁₀ -C) -hydroxy-acyl group (moreover: R ⁵ = (C ₈ - to C ₃₀ ) -alkyl, A '= direct bond, A ² = direct bond, A ³ = (C ₂ - to C ₄ ) -Hydroxyalkylene group or: R ⁵ = (C ₈ - to C ₃ o) -hydroxyalkyl or oligohydroxy- (C ₈ - to C ₃₀ ) -alkyl group, A ¹ = direct bond, A ² = direct bond, A ³ = (C ₂ - to C ₄ ) -alkylene group.

Examples of ω - [(C ₈ - to C ₃₀ ) -alkanoyloxy] - (C ₂ - to C ₄ ) -alkyl groups are the preferred 2 - [(C ₈ - to C ₃₀ ) -acyloxy] ethyl groups, in particular 2- ( Dodecanoyloxy) ethyl, 2- (tetradecanoyloxy) ethyl, 2- (hexadecanoyloxy) ethyl and 2- (octadecanoyloxy) ethyl.

The compounds of the formula (Q1) are preferably selected from at least one compound selected from the group consisting of compounds represented by the following formulas (Q1-a), (Q1-b) and (Q1-c).

One of the o.g. preferred groups of quaternary ammonium compounds of the abovementioned formula (Q1) are defined as compounds of the formula (Q1-a)

R ⁷ HO-CH ₂ CH ₂ -NA ³ -A ² -A ¹ -R ^{5 *} X ^" (Q1-a)

wherein

R ⁶ and R ⁷ independently of one another are a (C ₂ to C ₃₀ ) -acyl group or a linear or branched (C ₁ to C ₃₀ ) -alkyl group,

R ^{5 * is} a linear or branched (C ₈ to C ₃₀ ) alkyl group or a linear or branched one

(C ₈ to C ₃₀ ) alkenyl group,

A ¹ denotes a direct bond or a carbonyl group,

A ^{2 is} a direct bond, a group NH or an oxygen atom,

A ^{3 represents} a (C ₂ to C ₄ ) -alkylene group or a (C ₂ to C ₄ ) -hydroxyalkylene group and

X ^"is a physiologically acceptable organic or inorganic anion with the proviso that A ^{3 represents} a (C ₂ to C ₄ ) hydroxyalkylene group when A ¹ and A ^{2 are} a direct bond.

The other group of preferred quaternary ammonium compounds is selected from compounds of the formula (Q1-b) R ⁸

I ₊ R ⁵ -A ^{1 *} -A ^{2 *} -A ³ -NA ³ -A ^{2 '} -A ^{1 *} -R ⁵ X ^'' (Q1-b)

Wherein R ⁹ - R t ⁸ and R ⁹ independently represent a (Ci-C ₄₎ alkyl or (C ₂ - to C ₄₎ - are hydroxyalkyl,

R ^{5 is} a linear or branched (C ₈ - to C ₃ o) -alkyl group, linear or branched (C ₈ - to C ₃ o) -alkenyl group, a hydroxy (C ₈ - to C ₃₀ ) -alkyl group or an oligohydroxy group (C ₈ - to C ₃₀ ) -alkyl group, A ^{1 *} denotes a carbonyl group, A ^{2 *} denotes a group NH or an oxygen atom,

A ^{3 is} a (C ₂ - to C ₄ ) -alkylene group, a (C ₂ - to C ₄ ) -hydroxyalkylene group and X ^"is a physiologically acceptable organic or inorganic anion.

According to the invention, those compounds according to formula (Q1-b) are preferred for which at least one of the following conditions applies:

R ⁸ and R ⁹ are preferably independently of one another a methyl group or a 2-

Hydroxyethyl group. when R ⁸ and R ^{9 are the} same, they are preferably a (C ₁ - to C ₄ ) -alkyl group, more preferably a methyl group.

It is preferred that A ^{3 is} selected from ethylene, propane-1, 3-diyl, propane-1,2-diyl, 2-

Hydroxypropane-1,3-diyl.

Further inventively preferred quaternized ammonium compounds of the formula (Q1) are selected from compounds of the formula (Q1-c),

(R ¹⁰⁾ _y (Me) _{(4 y.)} N ⁺ X ^"(Q1-c)

in which

R ^{10 is} independently (C ₈ to C ₃₀ ) alkyl, y is 1 or 2 and

X ^'is a physiologically acceptable organic or inorganic anion,

In the compounds of the formula (Q1-c), the radical R ^{10 is} preferably an alkyl group having 10 to 22 carbon atoms, particularly preferably having 10 to 18 carbon atoms. The quaternary ammonium compounds present in the compositions according to the invention as compounds of the formula (Qi-c) are preferably halides, in particular chlorides and bromides.

The examples given for the radicals of the formula (Q1) are examples of the respective radicals or groups of the formulas (Q1-a), (Q1-b) and (Q1-c).

The compounds of formula (Q1) are preferably selected from the group formed

Salts, in particular halides, of dicetyldimethylammonium,

Distearyldimethylammoniums (eg Dioctadecyldimethylammonium chloride as Genamin ^® DSAc Clariant), cetyl-trimethyl ammonium (for example, hexadecyltrimethylammonium chloride as Dehyquart ^® A from Cognis), or Stearyltrimethylammoniums, quaternized Estersalzen of fatty acids with triethanolamine, so-called esterquats, in particular the salts of N, N- di (2- (dodecanoyloxy) ethyl) dimethylammoniums, N ₁ N-di (2- (tetradecanoyloxy) ethyl) dimethylammoniums, N, N-di (2-

(Hexadecanoyloxy) ethyl) dimethy1ammoniums, N, N-di (2- (hexadecanoyloxy) propyl) dimethylammonium, N, N-di (2- (octadecanoyloxy) ethyl) dimethylammonium having a physiologically acceptable, organic or inorganic anion. Preferred anions are alkyl sulfates, such as methyl sulfate, and halides, such as chloride and bromide. Such products are marketed under the trade names Stepantex® ^{®, ®} and Dehyquart® Armocare® ^®. The products Armocare ^® VGH-70, a N, N-di (2-Hexadecanoyloxyethyl) dimethyl ammonium chloride, as well as Dehyquart ^® L80 (INCI name: Dicocoylethyl Hydroxyethylmonium Methosulfate), Dehyquart ^® F-75, Dehyquart ^® C-4046, and Dehyquart ^® AU-35 are examples of such esterquats. It is also possible to use fatty acid slices, for example tallow-derived tallow acids obtained from tallow, for example beef tallow (INCI names: ditallowoylethyl dimonium methosulfate, ditallowoyl PG-dimonium chloride).

Salts of N, N-dimethyl-N- (2-hydroxyethyl) -N- (2-hydroxyhexadecyl) -ammonium. Preferred halides are chloride and bromide. These are, for example, under the trademark Dehyquart® ^® E: sold by the company Cognis, quaternized amide salts of fatty acids with diamines, such as salts of N- (13- Docosene) amidopropyl- (INCI name Aqua (Water), Hydroxycetyl hydroxyethyl dimonium chloride) N-2-hydroxyethyl-N, N-dimethylammoniums (INCI name: hydroxyethyl Erucamidopropyl Dimonium Chloride) or the N-Docosylamidopropyl-N-2-hydroxyethyl-N, N-dimethylammoniums under the trade name Incroquat ^® Behenyl HE (INCI name : Hydroxyethyl Behenamidopropyl Dimonium Chloride) is sold by Croda Inc. As quaternary ammonium compounds from the group of polymers derived from at least one monomer having a quaternary ammonium group, cationic and / or amphoteric polymers are preferably used. Cationic or amphoteric polymers are to be understood as meaning polymers which have a group in the main and / or side chain which is "permanently" cationic. According to the invention, "permanently cationic" refers to those polymers which have a cationic group, irrespective of the pH of the agent. These are usually polymers containing a quaternary nitrogen atom, for example in the form of an ammonium group. Preferred cationic groups are quaternary ammonium groups. In particular, those polymers in which the quaternary ammonium group is bonded via a (C ₁ to C ₄ ) hydrocarbon group to a polymer main chain composed of acrylic acid, methacrylic acid or derivatives thereof have proven to be particularly suitable.

Homopolymers of the general formula (Q2),

in which R ¹ = -H or -CH ₃ , R ² , R ³ and R ^{4 are} independently selected from (C ₁ to C ₄ ) -alkyl, -alkenyl or -hydroxyalkyl groups, m = 1, 2, 3 or 4, n is a natural number and X ^'is a physiologically acceptable organic or inorganic anion, and copolymers consisting essentially of the monomer units listed in formula (Q2) and nonionic monomer units are particularly preferred cationic polymers. In the context of these polymers, preference is given to those according to the invention for which at least one of the following conditions applies:

R ¹ is a methyl group

R ² , R ³ and R ⁴ are methyl groups m has the value 2.

Suitable physiologically acceptable counterions X ^' are, for example, halide ions, sulfate ions, phosphate ions, methosulfate ions and organic ions such as lactate, citrate, tartrate and acetate ions. Preference is given to halide ions, in particular chloride. A particularly suitable homopolymer (Q2) is the optionally crosslinked, poly (methacryloyloxyethyltrimethylammonium chloride) with the INCI name Polyquaternium 37. Such products are obtainable, for example under the names Rheocare ^® CTH (Cosmetic Rheologies) and Synthalen ^® CR (Ethnichem) commercially , If desired, the crosslinking can be carried out with the aid of poly olefinically unsaturated compounds, for example divinylbenzene, tetraallyloxyethane, methylenebisacrylamide, diallyl ether, polyallylpolyglyceryl ethers, or allyl ethers of sugars or sugar derivatives such as erythritol, pentaerythritol, arabitol, mannitol, sorbitol, sucrose or glucose. Methylenebisacrylamide is a preferred crosslinking agent.

The homopolymer is preferably used in the form of a nonaqueous polymer dispersion which should not have a polymer content of less than 30% by weight. 50% polymer content, other components: mineral oil (INCI name: Mineral OiI) and tridecyl-polyoxypropylene-polyoxyethylene ether (INCI name: PPG-1 -Trideceth-6) under the names Salcare ^® SC 95 ) and Salcare ^® SC 96 (about 50% polymer content, additional components: mixture of diesters of propylene glycol with a mixture of caprylic and capric acid (INCI name: propylene glycol Dicaprylate / Dicaprate) and tridecyl polyoxypropylene-polyoxyethylene-ether (INCI Designation: PPG-1-trideceth-6)) are commercially available.

Copolymers with monomer units of the formula (Q2) contain as nonionic monomer units preferably acrylamide, methacrylamide, acrylic acid-C- _M- alkyl esters and methacrylic acid-C _1-4 -alkyl esters. Among these nonionic monomers, the acrylamide is particularly preferred. These copolymers can also be crosslinked, as described above in the case of the homopolymers. A copolymer preferred according to the invention is the crosslinked acrylamide-methacryloyloxyethyltrimethylammonium chloride copolymer. Such copolymers in which the monomers are present in a weight ratio of about 20:80, commercially available as about 50% non-aqueous polymer dispersion under the name Salcare ^® SC 92nd

As quaternary ammonium compound according to the invention, the compositions according to the invention may comprise at least one polymer which comprises at least one structural unit of the formula (Q3), X ^" (Q3) where

R is a C ₁ to C ₃₀ alkyl group, a C ₁ to C ₄ aralkyl group, a C ₂ to C ₆ alkenyl group or a C ₂ to C ₆ hydroxyalkyl group and X ^"is a physiologically acceptable anion.

Preferred polymers of the formula (Q3) which are suitable according to the invention are those in which R is a C ₁ - to C ₁₀ -alkyl group, in particular a methyl group.

Examples of C ₁ -C ₃₀ compounds which can be used according to the invention in compounds of the formula (Q3)

Alkyl groups are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-decyl, n-dodecyl, stearyl or behenyl.

Examples of C ₂ to C _{6 which can} be used according to the invention in compounds of the formula (Q3)

Alkenyl groups are vinyl, 2-propene-1-yl (AlIIyI) or 3-buten-1-yl.

Examples of a C ₁ to C ₄ aralkyl group are the benzyl group and the 2-phenylethyl group.

Examples of a C ₂ to C ₆ -hydroxyalkyl group are the 2-hydroxyethyl group and the 3-

Hydroxypropyl group.

By definition, the physiologically acceptable anions X ^" according to formula (Q3) may not only carry a negative charge but may also have a charge number greater than 1. In the latter case, the anions X ^{" of} the salt form according to formula (Q3) will be formulated to maintain electroneutrality a stoichiometric coefficient less than 1 before the anion described. The physiologically acceptable anions are preferably selected from halide, benzenesulfonate, p-toluenesulfonate, -C ₄ alkane sulfonate, trifluoromethanesulfonate, C ₁ -C ₄ - alkyl sulfate, perchlorate, 0.5 sulfate, hydrogensulfate, 0.5 carbonate, bicarbonate, 1/3 phosphate, hydrogen phosphate 0.5 , Dihydrogen phosphate, lactate, citrate, tetrafluoroborate, hexafluorophosphate or tetrachlorozincate. Particularly preferably X ^'is a halide, in particular chloride, bromide or iodide, C _T C-alkyl sulfate, p-toluenesulfonate, tetrafluoroborate, trifluoromethanesulfonate, hexafluorophosphate, 0.5 sulfate, or hydrogen sulfate. The anions chloride, methyl sulfate or ethyl sulfate are particularly preferably used as X ^' .

The polymers of the formula (Q3) which can be used according to the invention have a preferred molecular weight of more than 100,000 g / mol, more preferably of more than 400,000 g / mol. It is preferred according to the invention to use a copolymer which, in addition to at least one structural unit according to the above formula (Q3), comprises at least one structural unit of the formula (N1),

wherein n is 1, 2 or 3 as the number of methylene units.

Preferred polymers are sold under the trade names Luviquat ^® FC 370, Luviquat ^® FC 550, Luviquat ^® FC 905 and Luviquat ^® HM 552, as well as Luviquat ^® Hold (INCI name: Polyquaternium-46), Luviquat ^® Supreme (Polyquaternium-68) and / or Luviquat ^® Ultra Care to refer respectively by the company BASF.

Also preferably usable is a copolymer in which in addition to at least one structural unit of the formula (Q3), at least one structural unit of the formula (N1) with n = 1 and at least one further structural unit of the formula (N1) with n = 3 is contained.

Preference is likewise given to using a terpolymer having the structural units of the formulas

RX ^" (Q3) (N1-a) (N1-b) in which R and X ^'have the meanings given for formula (Q3), in particular all the abovementioned embodiments.

Such polymers are sold, for example, by BASF under the trade name Luviquat ^® Hold (INCI name: Polyquaternium-46). The weight ratios (in weight percent) of the structural units of formula (I) to the structural units of formula (II) with n = 1 to the structural units of formula (II) with n = 3 in the commercial product 10 to 40 to 50 and the charge density is 0.5 meq / g. In all the polymers which can be used according to the invention, in the presence of different structural units, these can each be randomly distributed or present as a block.

Further cationic polymers which can be used in the compositions according to the invention are, for example

quaternized cellulose derivatives, such as are available under the names of Celquat ^® and Polymer JR ^® commercially. The compounds Celquat ^® H 100, Celquat ^® L 200 and Polymer JR ^® 400 are preferred quaternized cellulose derivatives, cationic alkyl polyglycosides according to DE-PS 44 13 686, cationized honey, for example the commercial product Honeyquat ^® 50, cationic guar derivatives, such as in particular the products sold under the trade name Cosmedia guar ^® and Jaguar ^® products, polymeric dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic acid and methacrylic acid. Under the names Merquat ^® 100 (Poly (dimethyldiallylammonium chloride)) and Merquat ^® 550 (dimethyldiallylammonium chloride-acrylamide copolymer) commercially available products are examples of such cationic polymers,

Copolymers of vinylpyrrolidone with quaternized derivatives of dialkylaminoalkyl acrylate and methacrylate, such as diethyl sulfate quaternized vinylpyrrolidone-dimethylaminoethyl methacrylate copolymers. Such compounds are available under the names Gafquat ^® 734 and Gafquat ^® 755 commercially, quaternized polyvinyl alcohol,

- as well as the polymers known under the names Polyquaternium 2, Polyquaternium 17, Polyquaternium 18 and Polyquaternium 27 with quaternary nitrogen atoms in the polymer main chain.

Can be used as cationic polymers (. B. commercial product, Quatrisoft ^® LM 200) under the designations Polyquaternium-24, known polymers. Also usable in the invention are the copolymers of vinylpyrrolidone, such as the commercial products Copolymer 845 (manufactured by ISP), Gaffix ^® VC 713 (manufactured by ISP), Gafquat ^® ASCP 1011, Gafquat ^® HS 110, Luviquat ^® 8155 and Luviquat ^® MS 370 available are.

In addition to cationic polymers or in their place, the agents according to the invention can also contain amphoteric polymers. These additionally have at least one negatively charged group in the molecule and are also referred to as zwitterionic polymers. In the context of the present invention, preferably usable zwitterionic polymers (Q4) essentially consist of one another

A) monomers having quaternary ammonium groups of the general formula (Z1-a),

R ¹ -CH = CR ² -CO-Z- (C _n H _2n ) -N ( ⁺ ) R ³ R ⁴ R ⁵ A 1 (Z ¹ -a)

In the R ¹ and R ² independently of one another are hydrogen or a methyl group and R ³ , R ⁴ and R ^{5 are} independently alkyl groups having 1 to 4 carbon atoms, Z is an NH group or an oxygen atom, n is an integer of 2 to 5 and A "is the anion of an organic or inorganic acid

and

B) monomeric carboxylic acids of the general formula (Z1-b),

R ⁶ -CH = CR ⁷ -COOH (Z ¹ -b)

in which R ⁶ and R ^{7 are} independently hydrogen or methyl groups.

Suitable starting monomers are, for. Dimethylaminoethylacrylamide, dimethylaminoethylmethacrylamide, dimethylaminopropylacrylamide, dimethylamino-propylmethacrylamide and diethylaminoethylacrylamide when Z of the formula (Z1-a) represents an NH group or dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate and diethylaminoethyl acrylate when Z is an oxygen atom.

The monomers containing a tertiary amino group are then quaternized in a known manner, methyl chloride, dimethyl sulfate or diethyl sulfate being particularly suitable as alkylating reagents. The quaternization reaction can be carried out in aqueous solution or in the solvent.

Advantageously, such monomers of the formula (Z1-a), the derivatives of acrylamide or methacrylamide represent. Preference is furthermore given to those monomers which contain halide, methoxysulfate or ethoxysulfate ions as counterions. Also preferred are those monomers of the formula (Z1-a) in which R ³ , R ⁴ and R ^{5 are} methyl groups.

The acrylamidopropyltrimethylammonium chloride is a most preferred monomer the forms! (ZI-a).

Suitable monomeric carboxylic acids of the formula (Z1-b) are acrylic acid, methacrylic acid, crotonic acid and 2-methylcrotonic acid. Preference is given to using acrylic or methacrylic acid, in particular acrylic acid.

The zwitterionic polymers which can be used according to the invention are prepared from monomers of the formulas (Z1-a) and (Z1-b) by polymerization processes known per se. The polymerization can be carried out either in aqueous or aqueous-alcoholic solution. The alcohols used are alcohols having 1 to 4 carbon atoms, preferably isopropanol, which simultaneously serve as polymerization regulators. However, other components than regulators may also be added to the monomer solution, eg. For example, formic acid or mercaptans, such as thioethanol and thioglycolic acid. The initiation of the polymerization takes place with the aid of free-radical-forming substances. For this purpose, redox systems and / or thermally decomposing radical formers of the azo compound type, such. As azoisobutyronitrile, azo-bis (cyanopentanoic acid) or azo-bis (amidinopropane) dihydrochloride can be used. As redox systems are z. B. combinations of hydrogen peroxide, potassium or ammonium oxodisulfate and tertiary butyl hydroperoxide with sodium sulfite, sodium dithionite or hydroxylamine hydrochloride as a reduction component.

The polymerization can be carried out isothermally or under adiabatic conditions, depending on the concentration ratios by the heat of polymerization released, the temperature range for the course of the reaction between 20 and 200 ° C may vary, and the reaction may be carried out under the autogenous pressure. Preferably, the reaction temperature is between 20 and 100 ⁰ C.

According to the invention, polymers of this type have proved particularly effective in which the monomers of the formula (Z1-a) were present in excess over the monomers of the formula (Z1-b). It is therefore preferred according to the invention to use those polymers which consist of monomers of the formula (Z1-a) and the monomers of the formula (Z1-b) in a molar ratio of 60:40 to 95: 5, in particular 75:25 to 95 : 5, persist.

Particularly suitable compounds according to the invention from the group of organic N-oxides are compounds of the formula (Q5) R ² R ¹ -N ⁺ -CT

R ³ (Q5)

in which mean

R ¹ and R ² independently of one another are a linear or branched (C ₁ to C ₃₀ ) -alkyl group, an aryl- (C ₁ to C ₆ ) -alkyl group, a (C ₂ to C ₃₀ ) -acyl group, or a group-A ¹ -A ² - A ³ -R ⁵ wherein R ^{5 represents} a linear or branched (C ₈ to C ₃₀ ) alkyl group or a linear or branched (C ₈ to C ₃₀ ) alkenyl group, A ^{1 represents} a direct bond or a carbonyl group A ^{2 is} a direct bond, a group NH or an oxygen atom, A ^{3 is} a (C ₂ to C ₄ ) -alkylene group or a (C ₂ to C ₄ ) -

Hydroxyalkylene group and R ³ denotes a linear or branched (C ₈ to C ₃₀ ) -alkyl group, a (C ₈ to C ₃₀ ) -

Hydroxyalkyl group, a (C ₂ to C ₃₀ ) acyl group, wherein R ¹ and R ^{2 can} also form a five- or six-membered ring together with the remainder of the molecule.

Preferably usable amine oxides are dimethyl (C _{8 to} C ₂₂ ) alkylamine oxides. In particular, cocamidopropylamine oxide, N-cocomorpholine oxide, decyldimethylamine oxide, dimethylcetylamine oxide, dimethylcocoamine oxide (Aromox® MCDW _{1 from} Akzo Nobel), dimethylhydrogenated tallowamine oxide, dimethyllaurylamine oxide, dimethylmyristylamine oxide, (2-hydroxyethyl) cocoamine oxide or oleamine oxide are preferably used in the compositions according to the invention as nonionic N -Oxid surfactants used.

Furthermore, according to the invention as quaternary ammonium compounds from the group of organic N-oxides, at least one pyridine-N-oxide or derivatives thereof, a pyrimidine-N-oxide or derivatives thereof, in particular 2,4-diaminopyrimidines-3-oxide (Chimex ) may be contained in the agent according to the invention.

In addition to the combination of active substances according to the invention, the agents according to the invention may contain as further component at least one compound of the aldehydes and / or the ketones. The choice of compounds from the aldehydes or ketones is initially no limit. At least one representative from the group proves to be particularly suitable:

- oxocarboxylic acids or their salts,

- oxocarboxylic acid ester,

cyclic, linear or branched aliphatic aldehydes,

cyclic, linear or branched aliphatic ketones,

mono- to polyhydroxy-functionalized aldehydes,

mono- to polyhydroxy-functionalized ketones,

- alicyclic, aromatic or heterocyclic aldehydes and

- alicyclic, aromatic or heterocyclic ketones.

In general, in the abovementioned compounds of the cyclic, alicyclic or heterocyclic ketones, the keto group (s) may be (endocyclically (and / or) or exocyclically bonded).

Oxocarboxylic acids are organic compounds which, in addition to at least one carboxyl group, carry a carbonyl group and are thus aldehyde or ketocarboxylic acids. Preferred oxocarboxylic acids are α-oxocarboxylic acids, β-oxocarboxylic acids, γ-oxocarboxylic acids and ω-oxocarboxylic acids of the formula (XII) or salts thereof,

RC- (CH ₂ ) _n -C -OH

Il

O O (XII)

in which mean

R is a hydrogen atom, a (C ₁ to C ₆ ) -alkyl group, a (C ₁ to C ₆ ) -hydroxyalkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, a (C ₂ to C ₆ ) -alkenyl group or a carboxy- ^ to C ₆ ) alkyl group, n is a number O ₁ 1, 2 or 3.

The oxocarboxylic acids are particularly preferably selected from at least one member from the group consisting of glyoxylic acid, acetoacetic acid, 3-oxoglutaric acid, 4-oxovaleric acid and pyruvic acid or the salts of the abovementioned acids.

The oxocarboxylic acid esters are preferably selected from (C ₁ to C ₆ ) -alkyl esters of the preferred oxocarboxylic acids according to the invention. According to the invention, cyclic, linear or branched aliphatic aldehydes are aliphatic aldehydes whose formyl group (s) are not in conjugation with an aromatic π-electron system. The corresponding aldehydes may carry aromatic radicals as long as the π-electrons of the formyl group (s) can not be delocalized via such an aromatic system. Preferred cyclic, linear or branched aliphatic aldehydes are saturated or unsaturated and are more preferably selected from at least one of formaldehyde, acetaldehyde, glyoxal, propionaldehyde, butanal, pentanal, isopentanal, hexanal, cyclohexanal, heptanal, octanal, malondialdehyde, glutaraldehyde, 2-methylpentanal, 2-ethylhexanal, 3,5,5-trimethylhexanal, 2-ethylbutyraldehyde, 2-methylbutyraldehyde, isobutyraldehyde, 3-phenylpropanal, 3- (4-methylphenyl) propanal, 3- (4-methoxyphenyl) propanal, 3 (2-methoxyphenyl) propanal, 2-butenal, acrolein, 3-methyl-2-butenal, 3,7-dimethyl-2,6-octadienal, 2,4-pentadienal, 3,7-dimethyl-6-octenal, 2 , 4-dimethyl-3-cyclohexenecarboxaldehyde and 2,6-nonadienal.

According to the invention, cyclic, linear or branched aliphatic ketones are aliphatic ketones whose keto group (s) are not in conjugation with an aromatic π-electron system. However, the corresponding ketones may carry aromatic radicals as long as the π electrons of the keto group (s) can not be delocalized via such an aromatic system. Preferred cyclic, linear or branched aliphatic ketones are saturated or unsaturated and selected from at least one member selected from the group acetone, 2-butanone, 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, butane-2,4-dione , Pentane-2,4-dione, hexane-2,5-dione, cyclohexanone, cyclopentanone, 4-methylpentan-2-one, 5-methyl-3-hexen-2-one, 2- (3-oxopropyl) benzoic acid methyl ester and 4- (3-oxopropyl) benzoic acid methyl ester.

Preferred monohydroxy-functionalized aldehydes are selected from at least one member selected from the group consisting of 1-hydroxypropanal, 5-hydroxypentanal, 3,7-dimethyl-7-hydroxyoctanal, hydroxyisohexyl-S-cyclohexene-i-carboxaldehyde and 2,6,6-trimethyl-1 , 3-cyclohexadiene-1-carboxaldehyde.

Polyhydroxy-functionalized aldehydes are according to the invention preferably the so-called aldoses and are particularly preferably selected from at least one member selected from the group consisting of 2,3-dihydroxypropionaldehyde, D-erythrose, D-threose, D-ribose, D-arabinose, D-lyxose, D-xylose, D-allose, D-altrose, D-galactose, D-glucose, D-idose, D-mannose, D-rhamnose and D-talose, as well as the L-configurations L-erythrose, L-threose, L-ribose, L Arabinose, L-lyxose, L- Xyiosis, L-aiosis, L-aterose, L-galactose, L-glucose, L-idose, L-mannose, L-rhamnose and L-talose.

Monohydroxyfunktionalisierte ketones, which are particularly suitable according to the invention are preferably selected from at least one member selected from the group 1-hydroxy-2-propanone, 1-hydroxy-2-butanone, 3-hydroxy-2-butanone and benzoin.

Polyhydroxy-functionalized ketones according to the invention are preferably the so-called ketoses and are more preferably selected from at least one member of group 1, 3-dihydroxyacetone, D-psicose, D-fructose, D-sorbose, D-tagatose, D-ribulose, D-xylulose, D-erythrulose and the L-configurations L-Psicose, L-Fructose, L-Sorbose, L-Tagatose, L-Ribulose, L-Xylulose, L-Erythrulose.

Preferred alicyclic, aromatic or heterocyclic ketones are preferably selected from at least one member of the group

Benzylidene ketones, in particular the benzylidene ketones from the patent application DE-A1-19717281 (see DE-A1-19717281: formula (I) of the first claim and the representatives according to claim 4), to which reference is expressly made,

- imidazoline-2,4-dione and its derivatives, in particular allantoin and / or 5,5-dimethylhydantoin.

Preferred alicyclic, aromatic or heterocyclic aldehydes are preferably selected from at least one member of the group

- benzaldehyde and its derivatives,

- cinnamaldehyde and its derivatives as well

- Naphthaldehyde and its derivatives.

The derivatives of benzaldehydes, naphthaldehydes or cinnamaldehydes are preferably selected from at least one member from the group of benzaldehyde, 1-naphthaldehyde, coniferylaldehyde, 2-methylbenzaldehyde, 3-methylbenzaldehyde, 4-methylbenzaldehyde, 2-methoxybenzaldehyde, 3-methoxybenzaldehyde, 4-methoxybenzaldehyde , 2-ethoxybenzaldehyde, 3-ethoxybenzaldehyde, 4-ethoxybenzaldehyde, 4-hydroxy-2,3-dimethoxy-benzaldehyde, 4-hydroxy-2,5-dimethoxy-benzaldehyde, 4-hydroxy-2,6-dimethoxy-benzaldehyde, 4 Hydroxy-2-methylbenzaldehyde, 4-hydroxy-2,3-dimethylbenzaldehyde, 4-hydroxy-2,5-dimethylbenzaldehyde, 4-hydroxy-2,6-dimethylbenzaldehyde, 3,5-diethoxy 4-hydroxybenzaldehyde, 2,6-diethoxy-4-hydroxybenzaldehyde, 3-hydroxy-4-methoxybenzaldehyde, 3-hydroxy-2-methoxybenzaldehyde, 2-hydroxy-4-methoxybenzaldehyde, 2 Ethoxy-4-hydroxybenzaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, 4-ethoxy-2- hydroxy-benzaldehyde, 4-thoxy-3-hydroxybenzaldehyde, 2,3-dimethoxybenzaldehyde, 2,4-dimethoxybenzaldehyde, 2,5-dimethoxybenzaldehyde, 2,6-dimethoxybenzaldehyde, 3,4-dimethoxybenzaldehyde, 3,5-dimethoxybenzaldehyde , 2,3,4-trimethoxybenzaldehyde, 2,3,5-trimethoxybenzaldehyde, 2,3,6-trimethoxybenzaldehyde, 2,4,6-trimethoxybenzaldehyde, 2,4,5-trimethoxybenzaldehyde, 2,5,6-trimethoxybenzaldehyde, 2 Hydroxybenzaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, 2,4-

Dihydroxybenzaldehyde, 2,4-dihydroxy-3-methylbenzaldehyde, 2,4-dihydroxy-5-methylbenzaldehyde, 2,4-dihydroxy-6-methylbenzaldehyde, 2,4-dihydroxy-3-methoxy-benzaldehyde, 2,4-dihydroxy-5-methoxy-benzaldehyde, 2,4-dihydroxy-6-methoxybenzaldehyde, 2,5-

Dihydroxybenzaldehyde, 2,6-dihydroxybenzaldehyde, 3,4-dihydroxybenzaldehyde, 3,4-dihydroxy-2-methylbenzaldehyde, 3,4-dihydroxy-5-methylbenzaldehyde, 3,4-dihydroxy-6-methylbenzaldehyde, 3,4-dihydroxy-2-methoxybenzaldehyde, 3,5-dihydroxybenzaldehyde, 2,3,4-trihydroxybenzaldehyde, 2,3,5-trihydroxybenzaldehyde, 2,3,6-trihydroxybenzaldehyde, 2,4,6-trihydroxybenzaldehyde, 2,4,5-trihydroxybenzaldehyde, 2,5,6-trihydroxybenzaldehyde, 4-dimethylaminobenzaldehyde, 4-diethylaminobenzaldehyde, 4-dimethylamino-2-hydroxybenzaldehyde, 4-pyrrolidinobenzaldehyde, 4-morpholinobenzaldehyde, 2-morpholinobenzaldehyde, 4-piperidinobenzaldehyde, 3, 5-dichloro-4-hydroxybenzaldehyde, 4-hydroxy-3,5-diiodobenzaldehyde, 3-chloro-4-hydroxybenzaldehyde, 5-chloro-3,4-dihydroxybenzaldehyde, 5-bromo-3,4-dihydroxybenzaldehyde, 3 Chloro-4-hydroxy-5-methoxybenzaldehyde, 4-hydroxy-3-iodo-5-methoxybenzaldehyde, 2-methoxy-1-naphthaldehyde, 4-methoxy-1-naphthaldehyde, 2-hydroxy-1-naphthaldehyde, 2,4- Dihydroxy-1-naphthaldehyde, 4-hydroxy-3-methoxy-i-nap 3-hydroxy-4-methoxy-1-naphthaldehyde, 2,4-dimethoxy-1-naphthaldehyde, 3,4-dimethoxy-1-naphthaldehyde, 4-dimethylamino 1-naphthaldehyde, 2-nitrobenzaldehyde, 3-nitrobenzaldehyde, 4-nitrobenzaldehyde, A-methyl-3-nitrobenzaldehyde, 3-hydroxy-4-nitrobenzaldehyde, 5-hydroxy-2-nitrobenzaldehyde, 2-hydroxy-5-nitrobenzaldehyde, 2- Hydroxy-3-nitrobenzaldehyde, 2-fluoro-3-nitrobenzaldehyde, 3-methoxy-2-nitrobenzaldehyde, 4-chloro-3-nitrobenzaldehyde, 2-chloro-6-nitrobenzaldehyde, 5-chloro-2-nitrobenzaldehyde, 4-chloro 2-nitrobenzaldehyde, 2,4-dinitrobenzaldehyde, 2,6-dinitrobenzaldehyde, 2-hydroxy-3-methoxy-5-nitrobenzaldehyde, 4,5-dimethoxy-2-nitrobenzaldehyde, 6-nitropiperonal, 2-nitropiperonal, 5-nitrovanillin, 2,5-dinitrosalicylaldehyde, 5-bromo-3-nitrosalicylaldehyde, 4-nitro-1-naphthaldehyde, 2-nitrocinnamaldehyde, 3-nitrocinnamaldehyde, 4-nitrocinnamaldehyde, 4-dimethylaminocinnamaldehyde, 2-dimethylaminobenzaldehyde, 2-chloro-4- dimethylaminobenzaldehyde, 4-dimethylamino-2-m ethylbenzaldehyde, 4-diethylamino-cinnamic aldehyde, 4-dibutylamino-benzaldehyde, 4-diphenylaminobenzaldehyde, 4- (1-imidazolyl) -benzaldehyde and piperonal.

All aldehyde or keto compounds should be selected from physiologically acceptable or non-toxic compounds if the agent according to the invention is to be used as a cosmetic agent. The compounds selected from aldehydes and / or ketones are according to the invention preferably in an amount of 0.1 wt .-% to 20 wt .-%, in particular from 0.5 wt .-% to 10 wt .-%, each based on the weight of the ready-to-use agent, contained in the composition according to the invention.

It may be preferred according to the invention to provide the agent according to the invention with the proviso that the compounds used in the agent according to the invention, selected from the aldehydes and / or the ketones, must be different from those aldehydes or ketones, from which those sulfinic acids are derived, which are actually contained in the agent according to the invention.

It is also preferred according to the invention if the agent according to the invention additionally contains at least one reductone. A reductone is understood by those skilled in the art to be reductive endiol compounds which are stabilized by substitution in the α position and undergo tautomerism. The most important reductones which can be used according to the invention are ascorbic acid, isoascorbic acid, 2,3-dihydroxy-2-propen-dial and 2,3-dihydroxy-2-cyclopentenone.

The reductones are inventively preferably in an amount of 0.1 wt .-% to 20 wt .-%, in particular from 0.5 wt .-% to 10 wt .-%, each based on the weight of the ready-to-use agent, in the contain agents according to the invention.

Suitable carriers for the agent according to the invention are preferably liquid media in which the sulfinic acid derivative according to the invention is preferably soluble, for example water or organic solvents. It is preferred according to the invention if the carrier is a cosmetic carrier.

As cosmetic carriers are particularly suitable creams, emulsions, gels or surfactant-containing foaming solutions, such as shampoos, foam aerosols or other preparations which are particularly suitable for use on the hair. But it is also conceivable to integrate the ingredients in a powdered or tablet-like formulation, which is dissolved in water before use. The cosmetic carriers may in particular be aqueous or aqueous-alcoholic.

An aqueous cosmetic carrier contains at least 50% by weight of water.

Among aqueous-alcoholic cosmetic carriers are within the meaning of the present invention aqueous solutions containing 3 to 70 wt .-% of a CτC ₄ -Aikohols, especially ethanol or isopropanol to understand. Further alcoholic solvents are, for example, methoxybutanol, benzyl alcohol, 2-phenoxyethanol, ethyldiglycol or 1,2-propylene glycol. In a preferred embodiment, the inventive composition additionally contains, as solvent, at least one (C ₂ to C ₆ ) -alkyl monoalcohol and / or a (C ₂ to C ₆ ) -alkanediol, in particular ethanol, isopropanol and / or 1,2-propylene glycol.

The agent according to the invention preferably has a pH of from pH 1 to pH 9, in particular from pH 1.5 to pH 6.

A second object of the invention is the use of the composition according to the first subject of the invention for the decolorization of substrates which are colored with natural and / or synthetic dyes.

The substrate preferably contains synthetic fibers and / or natural fibers.

The natural fibers are preferably selected from cellulose-containing fibers, in particular cotton, and keratin-containing fibers, in particular wool or animal or human hair, very particularly preferably from human hair.

The synthetic fibers will preferably be selected from polyester, polyamide (such as nylon), elastane, viscose or polyacrylic.

The substrates to be decolorized are preferably dyed with oxidation dyes and / or substantive dyes as representatives of the synthetic dyes.

In principle, developer components used to color the substrate can serve as downstream developer components.

Particular preference is given to p-phenylenediamine derivatives of the formula (E1)

(E1) G ¹ represents a hydrogen atom, a C _r to C ₄ -alkyl radical, a C _r to C ₄ - monohydroxyalkyl radical, a C ₂ - to C ₄ -polyhydroxyalkyl radical, a (d- to C ₄ ) -alkoxy- (Cr to C ₄ ) -alkyl radical, a 4'-aminophenyl radical or a C _r to C ₄ alkyl radical which is substituted by a nitrogen-containing group, a phenyl or a 4'-aminophenyl radical;

G ² represents a hydrogen atom, a C ₁ - to C ₄ alkyl, C ₁ - to C ₄ - monohydroxyalkyl radical, a C ₂ - to C ₄ polyhydroxyalkyl radical, a (C ₁ - to C ₄ J-AIkOXy- ( C ₁ - to C ₄₎ alkyl or d- to C ₄ alkyl radical substituted with a nitrogenous group;

G ³ represents a hydrogen atom, a halogen atom such as a chlorine, bromine, iodine or fluorine atom, a C ₁ - to C ₄ -alkyl radical, a C ₁ - to C ₄ -monohydroxyalkyl radical, a C ₂ - to C ₄ - Polyhydroxyalkylrest, a C ₁ - to C ₄ -hydroxyalkoxy, a C ₁ - to C ₄ -Acetylaminoalkoxyrest, a C ₁ - to C ₄ - Mesylaminoalkoxyrest or a C ₁ - to C ₄ -Carbamoylaminoalkoxyrest;

G ⁴ represents a hydrogen atom, a halogen atom or a C ₁ - to C ₄ -alkyl radical or when G ³ and G ⁴ are ortho to each other, they may together form a bridging α, ω-alkylenedioxy group, such as, for example, an ethylenedioxy group.

Particularly preferred p-phenylenediamines of the formula (E1) are selected from p-phenylenediamine, p-toluenediamine, 2-chloro-p-phenylenediamine, 2,3-dimethyl-p-phenylenediamine, 2,6-dimethyl-p-phenylenediamine, 2 , 6-diethyl-p-phenylenediamine, 2,5-dimethyl-p-phenylenediamine, N, N-dimethyl-p-phenylenediamine, N, N-diethyl-p-phenylenediamine, N, N-dipropyl-p-phenylenediamine, 4 -Amino-3-methyl- (N, N-diethyl) -aniline, N, N-bis- (β-hydroxyethyl) -p-phenylenediamine, 4-N, N-bis- (β-hydroxyethyl) -amino-2 -methylaniline, 4-N, N-bis (β-hydroxyethyl) amino-2-chloroaniline, 2- (β-hydroxyethyl) -p-phenylenediamine, 2- (α, β-dihydroxyethyl) -p-phenylenediamine, 2 Fluoro-p-phenylenediamine, 2-isopropyl-p-phenylenediamine, N- (β-hydroxypropyl) -p-phenylenediamine, 2-hydroxymethyl-p-phenylenediamine, N, N-dimethyl-3-methyl-p-phenylenediamine, N , N- (ethyl, β-hydroxyethyl) -p-phenylenediamine, N- (β, γ-dihydroxypropyl) -p-phenylenediamine, N- (4'-aminophenyl) -p-phenylenediamine, N-phenyl-p-phenylenediamine, 2- (β-hydroxyethyloxy) -p-phenylenediamine, 2- (β-Acety laminoethyloxy) -p-phenylenediamine, N- (β-methoxyethyl) -p-phenylenediamine, N- (4-amino-3-methylphenyl) -N- [3- (1 H -imidazol-1-yl) propyl] amine and 5,8-Diaminobenzo-1, 4-dioxane and their physiologically acceptable salts.

Very particular preferred p-phenylenediamine derivatives of the formula (E1) according to the invention are p-phenylenediamine, p-toluenediamine, 2- (β-hydroxyethyl) -p-phenylenediamine, 2- (α, β-dihydroxyethyl) -p-phenylenediamine and N, N bis (.beta.-hydroxyethyl) -p-phenylenediamine.

According to the invention, it may further be preferred for the dyeing of the substrate to use as developer component compounds which contain at least two aromatic nuclei which are substituted by amino and / or hydroxyl groups. Among the binuclear developer components which can be used in the dyeing compositions according to the invention, mention may be made in particular of the compounds corresponding to the following formula (E2) and their physiologically tolerated salts:

in which:

Z ¹ and Z ² independently of one another represent a hydroxyl or NH ₂ radical which is optionally substituted by a C ₁ - to C ₄ -alkyl radical, by a C ₁ - to C ₄ -hydroxyalkyl radical and / or by a bridge Y. or which is optionally part of a bridging ring system, the bridge Y is an alkylene group having 1 to 14 carbon atoms, such as a linear or branched alkylene chain or an alkylene ring, which is one or more nitrogen-containing groups and / or one or more heteroatoms such as oxygen , Sulfur or nitrogen atoms may be interrupted or terminated and may optionally be substituted by one or more hydroxyl or C ₁ - to C ₈ -alkoxy radicals, or a direct bond,

G ⁵ and G ⁶ independently of one another represent a hydrogen or halogen atom, a C ₁ - to C ₄ -alkyl radical, a C ₁ - to C ₄ -monohydroxyalkyl radical, a C ₂ - to C ₄ -hydroxyalkyl radical, a C ₁ - to C ₄ -aminoalkyl radical or a direct compound for bridging Y,

G ⁷ , G ⁸ , G ⁹ , G ¹⁰ , G ¹¹ and G ¹² independently of one another represent a hydrogen atom, a direct bond to the bridge Y or a C ₁ - to C ₄ -alkyl radical, with the proviso that the compounds of the Formula (E2) contain only one bridge Y per molecule.

The substituents used in formula (E2) are defined according to the invention analogously to the above statements.

Preferred binuclear developer components of the formula (E2) are in particular: N, N'-bis (β-hydroxyethyl) -N, N'-bis (4'-aminophenyl) -1,3-diamino-propan-2-ol, N, N'-bis (.beta.-hydroxyethyl) -N, N'- to - ^ '- ärninophenyO-ethyienαiamin, N, N'-Bis - ^ - aminophenyO-tetramethylenediamine, N, N'-bis (.beta.-hydroxyethyl) -N, N'-bis (4-aminophenyl) _{tetramethylenediamine>} N ₁ N'-bis (4-methyl-aminophenyl) - tetramethylenediamine, N, N'-diethyl-N, N'-bis ^ '- amino-S'-methylphenylJ-ethylenediamine, bis (2-hydroxy-5 aminophenyl) methane, N N _l ^I bis- (4'-aminophenyl) -1, 4-diazacycloheptane, N, N'-bis (2-hydroxy-5-aminobenzyl) piperazine, N- (4 ' -Aminophenyl) -p-phenylenediamine and 1, 10-bis- (2 ', 5 ¹ - diaminophenyl) -1, 4,7,10-tetraoxadecane and their physiologically acceptable salts.

Very particularly preferred binuclear developer components of the formula (E2) are N, N'-bis (β-hydroxyethyl) -N, N'-bis (4-aminophenyl) -1,3-diamino-propan-2-ol, bis - (2-hydroxy-5-aminophenyl) -methane, 1, 3-bis (2,5-diaminophenoxy) -propan-2-ol, N, N'-bis (4-aminophenyl) -1, 4- diazacycloheptane and 1, 10-bis (2,5-diaminophenyl) -1, 4,7,10-tetraoxadecane or one of its physiologically acceptable salts.

Furthermore, it may be preferred according to the invention to use as the developer component a p-aminophenol derivative or one of its physiologically tolerable salts for coloring the substrate to be decolored. Particular preference is given to p-aminophenol derivatives of the formula (E3)

in which:

G ¹³ represents a hydrogen atom, a halogen atom, a C ₁ - to C ₄ -alkyl radical, a C ₁ - to C ₄ -monohydroxyalkyl radical, a C ₂ - to C ₄ -polyhydroxyalkyl radical, a (C ₁ - to C ₄ ) - , alkyl alkoxy (C _r to C ₄₎ a Ci to C ₄ aminoalkyl group, a hydroxy-FcR to C ₄₎ alkylamino group, a C ₁ - to C ₄ -Hydroxyalkoxyrest, a C ₁ - to Cj-HydroxyalkyKC _T to C ₄ ) -aminoalkyl radical or a (di-C ₁ - to C ₄ -AlkVIaITHnO) - (C ₁ - to C ₄ ) -alkyl radical, and

G ¹⁴ represents a hydrogen or halogen atom, a C ₁ - to C ₄ alkyl, C ₁ - to C ₄ - monohydroxyalkyl radical, a C ₂ - to C ₄ polyhydroxyalkyl radical, a (C ₁ - to C ₄ J- AIkOXy- (C ₁ - to C ₄ ) -alkyl radical, a Ci to C ₄ -Aminoalkylrest or a C ₁ - to C ₄ -Cyanoalkylrest,

G ¹⁵ is hydrogen, C ₁ - to C ₄ -alkyl, C ₁ - to C ₄ -monohydroxyalkyl, C ₂ - to C ₄ -polyhydroxyalkyl, phenyl or benzyl, and

G ¹⁶ is hydrogen or a halogen atom. The in forms! (E3) Substiiueπieπ used are defined according to the invention analogous to the above.

Preferred p-aminophenols of the formula (E3) are, in particular, p-aminophenol, N-methyl-p-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 2-hydroxymethylamino-4-aminophenol, 4 -Amino-3-hydroxymethylphenol, 4-amino-2- (β-hydroxyethoxy) -phenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethyl-phenol, 4-amino -2-aminomethylphenol, 4-amino-2- (β-hydroxyethyl-aminomethyl) phenol, 4-amino-2- (α, β-dihydroxyethyl) phenol, 4-amino-2-fluorophenol, 4-amino-2 -chlorophenol, 4-amino-2,6-dichlorophenol, 4-amino-2- (diethyl-aminomethyl) -phenol and their physiologically acceptable salts.

Very particularly preferred compounds of the formula (E3) are p-aminophenol, 4-amino-3-methylphenol, 4-amino-2-aminomethylphenol, 4-amino-2- (α, β-dihydroxyethyl) -phenol and 4-amino 2- (diethylaminomethyl) -phenol.

Further, the developer component may be selected from o-aminophenol and its derivatives such as 2-amino-4-methylphenol, 2-amino-5-methylphenol or 2-amino-4-chlorophenol.

Further, the developer component may be selected from heterocyclic developer components such as the pyridine, pyrimidine, pyrazole, pyrazole pyrimidine derivatives and their physiologically acceptable salts.

Preferred pyridine derivatives are, in particular, the compounds described in the patents GB 1 026 978 and GB 1 153 196, such as 2,5-diamino-pyridine, 2- (4-methoxyphenyl) -amino-3-amino-pyridine, 2,3-diamino-6-methoxy-pyridine, 2- (β-methoxyethyl) -amino-3-amino-6-methoxy-pyridine and 3,4-diamino-pyridine.

Preferred pyrimidine derivatives are, in particular, the compounds described in German Patent DE 2 359 399, Japanese Laid-Open Patent Publication JP 02019576 A2 or in the published patent application WO 96/15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy- 2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2-dimethylamino-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrirnidine and 2,5,6- triaminopyrimidine.

Preferred pyrazole derivatives are, in particular, the compounds described in patents DE 3 843 892, DE 4 133 957 and patent applications WO 94/08969, WO 94/08970, EP-740 931 and DE 195 43 988, such as 4,5-diamino-i-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1- (4 ' -chlorobenzyl) pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-ynethyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino- 1, 3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4 _{l of} 5-diamino-3-tert-butyl-1-methylpyrazole, 4,5-diamino-1-tert .-butyl-3-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) -3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl- 3- (4'-methoxyphenyl) pyrazole ₁ 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxyethyl-1-one -isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5- (β-aminoethyl) -amino-1,3-dimethylpyrazole, 3,4,5-

Triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole and 3,5-diamino-4- (β-hydroxyethyl) amino-1-methylpyrazole.

Preferred pyrazolopyrimidine derivatives are, in particular, the derivatives of the pyrazolo [1,5-ajpyrimidine of the following formula (E4) and their tautomeric forms, provided that a tautomeric equilibrium exists:

G ¹⁷ , G ¹⁸ , G ¹⁹ and G ²⁰ independently of one another represent a hydrogen atom, a C ₁ - to C ₄ -alkyl radical, an aryl radical, a C ₁ - to C ₄ -hydroxyalkyl radical, a C ₂ - to C ₄ - Polyhydroxyalkylrest a (C ₁ - to C ₄ ) -alkoxy- (C _r to C ₄ ) -alkyl radical, a C ₁ - to C ₄ - aminoalkyl radical, which may be protected by an acetyl-ureide or a sulfonyl radical can, a (C ₁ - to C ₄₎ alkylamino (C ₁ - to C ₄₎ alkyl group DK a (C ₁ - to C ₄₎ alkyl] - (d- to C ₄₎ aminoalkyl radical, wherein the dialkyl radicals optionally form a carbon cycle or a heterocycle with 5 or 6 chain members, a C ₁ - to C ₄ -hydroxyalkyl- or a di- (C ₁ - to C ₄ ) - [hydroxyalkyl] - (C ₁ - to C ₄₎ aminoalkyl radical, the X radicals are each independently a hydrogen atom, a Ci to C ₄ - alkyl radical, an aryl radical, a C ₁ - to C ₄ -hydroxyalkyl group, a C ₂ - to C ₄ - polyhydroxyalkyl a C ₁ - to C ₄ -am inoalkylrest, a (C ₁ - to C ₄₎ alkylamino (C ₁ - to C ₄₎ - alkyl group, a di - aminoalkyl group, wherein the [(C _r to C ₄₎ alkyl] - - (C ₄ to C ₁₎ Dialkyl radicals optionally form a carbon cycle or a heterocycle having 5 or 6 chain members, a C ₁ - to C ₄ -hydroxyalkyl or a di- (C ₁ - to C ₄ -hydroxyalkyl) -aminoalkyl radical, an amino radical, a C ₁ - to C ₄ -alkyl or di (C ₁ to C ₄ -hydroxyalkyl) -amino, a halogen atom, a carboxylic acid group or a sulfonic acid group, i has the value Q, 1, 2 or 3, p has the value 0 or 1, q has the value 0 or 1 and n has the value 0 or 1, with the proviso that the sum of p + q is not equal to 0 when p + q is 2, n is 0, and the groups NG ¹⁷ G ¹⁸ and NG ¹⁹ G ²⁰ occupy the positions (2, 3); (5,6); (6,7); (3,5) or (3,7); when p + q is 1, n is 1, and the groups NG ¹⁷ G ¹⁸ (or NG ¹⁹ G ²⁰ ) and the group OH occupy the positions (2, 3); (5,6); (6,7); (3,5) or (3,7);

The substituents used in formula (E4) are defined according to the invention analogously to the above statements.

When the pyrazolo [1,5-a] pyrimidine of the above formula (E4) contains a hydroxy group at one of the 2, 5 or 7 positions of the ring system, there is a tautomeric equilibrium represented, for example, in the following scheme:

Among the pyrazolo [1, 5-a] pyrimidines of the above formula (E4) may be mentioned in particular:

Pyrazolo [1,5-a] pyrimidine-3,7-diamine;

2,5-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine;

Pyrazolo [1,5-a] pyrimidine-3,5-diamine;

2,7-dimethyl-pyrazolo [1,5-a] pyrimidine-3,5-diamine;

3-aminopyrazolo [1,5-a] pyrimidin-7-ol;

3-aminopyrazolo [1,5-a] pyrimidin-5-ol;

2- (3-aminopyrazolo [1,5-a] pyrimidin-7-ylamino) ethanol;

2- (7-aminopyrazolo [1,5-a] pyrimidin-3-ylamino) ethanol;

2 - [(3-aminopyrazolo [1,5-a] pyrimidin-7-yl) - (2-hydroxy-ethyl) -amino] -ethanol;

2 - [(7-aminopyrazolo [1,5-a] pyrimidin-3-yl) - (2-hydroxy-ethyl) -amino] -ethanol; 5,6-dirhia-pyrazolozo [1,5-aipyrimidine-3,7-diamine;

2,6-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine;

3-amino-7-dimethylamino-2,5-dimethylpyrazolo [1,5-a] pyrimidine; and their physiologically acceptable salts and their tautomeric forms when tautomeric equilibrium is present.

The pyrazolo1, 5-a] pyrimidines of the above formula (E4) can be prepared as described in the literature by cyclization from an aminopyrazole or from hydrazine.

In a further preferred embodiment, the substrates to be decolored were dyed with an oxidative dye which additionally contains at least one coupler component in addition to at least one developer component.

As coupler components m-phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones and m-aminophenol derivatives are generally used. Suitable coupler substances are in particular 1-naphthol, 1, 5, 2,7- and 1, 7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, m-phenylenediamine, 1-phenyl-nyl 3-methyl-pyrazolone-5, 2,4-dichloro-3-aminophenol, 1, 3-bis (2 ', 4'-diaminophenoxy) -propane, 2-chloro-resorcinol, 4-chloro-resorcinol, 2 Chloro-6-methyl-3-aminophenol, 2-amino-3-hydroxypyridine, 2-methylresorcinol, 5-methylresorcinol and 2-methyl-4-chloro-5-aminophenol.

Preferred coupler components according to the invention are m-aminophenol and its derivatives, such as, for example, 5-amino-2-methylphenol, N-cyclopentyl-3-aminophenol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 2 6-dimethyl-3-aminophenol, 3-trifluoroacetyl amino-2-chloro-6-methylphenol, 5-amino-4-chloro-2-methylphenol, 5-amino-4-methoxy-2-methylphenol, 5- (2 '- hydroxyethyl) amino-2-methylphenol, 3- (diethylamino) -phenol, N-cyclopentyl-3-aminophenol, 1, 3-dihydroxy-5- (methylamino) -benzene, 3-ethylamino-4-methylphenol and 2 , 4-dichloro-3-aminophenol, o-aminophenol and its derivatives, m-diaminobenzene and its derivatives such as, for example, 2,4-diaminophenoxyethanol, 1,3-bis (2 ', 4'-diaminophenoxy) -propane, 1-Methoxy-2-amino-4- (2'-hydroxyethylamino) benzene, 1,3-bis (2 ', 4'-diaminophenyl) -propane, 2,6-bis (2'-hydroxyethylamino) -1 -methylbenzene, 2 - ({3 - [(2-hydroxyethyl) amino] -4-methoxy-5-methylphenyl} amino) ethanol, 2 - ({3 - [(2-hydroxyethyl) amino] -2-methoxy-5 methylphenyl} amino) ethano 1, 2- [3-morpholin-4-yl-phenyl) -amino] -ethanol, 3-amino-4- (2-methoxy-ethoxy) -5-methyl-phenylamine and 1-amino-3-bis- (2'-hydroxy-ethyl) -aminobenzene, o-diamiπobenzoi and its derivatives such as 3,4-diaminobenzoic acid and 2,3-diamino-1-methylbenzene,

Di- or trihydroxybenzene derivatives such as resorcinol, resorcinol monomethyl ether, 2-methylresorcinol, 5-methylresorcinol, 2,5-dimethylresorcinol, 2-chlororesorcinol, 4-chlororesorcinol, pyrogallol and 1,2,4-trihydroxybenzene, pyridine derivatives such as 2,6-dihydroxypyridine , 2-amino-3-hydroxypyridine, 2-amino-5-chloro-3-hydroxypyridine, 3-amino-2-methylamino-6-methoxypyridine, 2,6-dihydroxy-3,4-dimethylpyridine, 2,6-dihydroxy 4-methylpyridine, 2,6-diaminopyridine, 2,3-diamino-6-methoxypyridine and 3,5-diamino-2,6-dimethoxypyridine,

Naphthalene derivatives such as 1-naphthol, 2-methyl-1-naphthol, 2-hydroxymethyl-1-naphthol, 2-hydroxyethyl-1-naphthol, 1, 5-dihydroxynaphthalene, 1, 6-dihydroxynaphthalene, 1, 7-dihydroxynaphthalene, 1 , 8-dihydroxynaphthalene, 2,7-dihydroxynaphthalene and 2,3-dihydroxynaphthalene,

Morpholine derivatives such as 6-hydroxybenzomorpholine and 6-aminobenzomorpholine,

Quinoxaline derivatives such as 6-methyl-1,2,3,4-tetrahydroquinoxaline, pyrazole derivatives such as 1-phenyl-3-methylpyrazol-5-one, indole derivatives such as 4-hydroxyindole, 6-hydroxyindole and 7-hydroxyindole, pyrimidine derivatives such as For example, 4,6-diaminopyrimidine, 4-amino-2,6-dihydroxypyrimidine, 2,4-diamino-6-hydroxypyrimidine, 2,4,6-trihydroxypyrimidine, 2-amino-4-methylpyrimidine, 2-amino-4-hydroxy 6-methylpyrimidine and 4,6-dihydroxy-2-methylpyrimidine, or methylenedioxybenzene derivatives such as 1-hydroxy-3,4-methylenedioxybenzene, 1-amino-3,4-ethylenedioxybenzene and 1- (2'-hydroxyethyl) -amino 3,4-methylenedioxybenzene and their physiologically acceptable salts.

Particularly preferred coupler components according to the invention are 1-naphthol, 1,5-, 2,7- and 1,7-dihydroxynaphthalene, 3-aminophenol, 5-amino-2-methylphenol, 2-amino-3-hydroxypyridine, resorcinol, 4-chlororesorcinol , 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol, 2,5-dimethylresorcinol and 2,6-dihydroxy-3,4-dimethylpyridine.

In addition, the substrates to be decolorized with precursors of naturally-analogous dyes may preferably be dyed with the aid of such indoles and indolines, which preferably have at least two hydroxyl or amino groups, preferably as a substituent on the six-membered ring. These groups may carry further substituents, e.g. Example in the form of etherification or esterification of the hydroxy group or alkylation of the amino group. Particularly suitable precursors of naiuranaioger hair dyes are derivatives of 5,6-dihydroxyindoline of the formula XIIIa. ₁

(XIIIa)

in the independently of each other

G ²¹ is hydrogen, a C 1 -C 4 alkyl group or a C 1 -C 4 hydroxyalkyl group,

G ²² is hydrogen or a -COOH group, where the -COOH group may also be present as salt with a physiologically compatible cation,

G ²³ is hydrogen or a C _r C ₄ -alkyl group,

G ²⁴ is hydrogen, a C ₁ -C ₄ -AlkVIgHJpPe or a group -CO-G ²⁶ , in which G ²⁶ is a C ₁ -C ₄ alkyl group, and

G ²⁵ represents one of the groups mentioned under G ²⁴ , as well as physiologically acceptable salts of these compounds with an organic or inorganic acid.

Particularly preferred derivatives of indoline are 5,6-dihydroxyindoline, N-methyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline, N-propyl-5,6-dihydroxyindoline,

N-butyl-5,6-dihydroxyindoline, 5,6-dihydroxyindoline-2-carboxylic acid and 6-hydroxyindoline, 6-aminoindoline and 4-aminoindoline.

Particularly noteworthy within this group are N-methyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline, N-propyl-5,6-dihydroxyindoline, N-butyl-5,6-dihydroxyindoline and especially 5, 6-Dihydroxyindolin.

Also suitable as precursors of naturally-analogous hair dyes are derivatives of the 5,6-dihydroxyindole of the formula XIIIb,

_/ -, 27

(XIIIb)

in the independently of each other

G ²⁷ is hydrogen, a C 1 -C ₄ -alkyl group or a C 1 -C ₄ -hydroxyalkyl group,

G ²⁸ is hydrogen or a -COOH group, wherein the -COOH group also as

May be salt with a physiologically acceptable cation,

G ²⁹ is hydrogen or a C 1 -C ₄ alkyl group, - G ³⁰ is hydrogen, a C _r C ₄ alkyl group or a group -CO-G ³² , in which G ³² is a (-Vd-alkyl group, and

G ³¹ stands for one of the groups mentioned under G ³⁰ , as well as physiologically acceptable salts of these compounds with an organic or inorganic acid.

Particularly preferred derivatives of indole are 5,6-dihydroxyindole, N-methyl-5,6-dihydroxyindole, N-ethyl-5,6-dihydroxyindole, N-propyl-5,6-dihydroxyindole, N-butyl-5,6- dihydroxyindole, 5,6-dihydroxyindole-2-carboxylic acid, 6-hydroxyindole, 6-aminoindole and 4-aminoindole.

Emphasized within this group are N-methyl-5,6-dihydroxyindole, N-ethyl-5,6-dihydroxyindole, N-propyl-5,6-dihydroxyindole, N-butyl-5,6-dihydroxyindole, and especially the 5,6 -Dihydroxyindol.

The substrate to be decolorized may also have been dyed with substantive dyes. Suitable direct dyes include, in particular, nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones or indophenols. Preferred substantive dyes are those having the international designations or trade names HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, Acid Yellow 1, Acid Yellow 10, Acid Yellow 23, Acid Yellow 36, HC Orange Disperse Orange 3, Acid Orange 7, HC Red 1, HC Red 3, HC Red 10, HC Red 11, HC Red 13, Acid Red 33, Acid Red 52, HC Red BN, Pigment Red 57: 1, HC Blue 2, HC Blue 12, Disperse Blue 3, Acid Blue 7, Acid Green 50, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Acid Violet 43, Disperse Black 9, Acid Black 1, and Acid Black 52 known compounds as well as 1 , 4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1,4-bis (β-hydroxyethyl) amino-2-nitrobenzene, 3-nitro-4- (β-hydroxyethyl) -aminophenol, 2 - (2 ' Hydroxyethyl) amino-4,6-dinitrophenol, 1- (2'-hydroxyethyl) amino-4-methyl-2-nitrobenzene, 1-amino-4- (2'-hydroxyethyl) amino-5-chloro-2-nitrobenzene , 4-amino-3-nitrophenol, 1- (2'-ureidoethyl) amino-4-nitrobenzene, 4-amino-2-nitrodiphenylamine-2'-carboxylic acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-1-hydroxy-4-nitrobenzene ,

Further, the substrates to be decolored may preferably be colored with a cationic substantive dye. Particularly preferred are

(a) cationic triphenylmethane dyes such as Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14,

(b) aromatic systems substituted with a quaternary nitrogen group, such as Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16 and Basic Brown 17, as well as

(C) substantive dyes containing a heterocycle having at least one quaternary nitrogen atom, as mentioned for example in EP-A2-998 908, to which reference is explicitly made at this point in claims 6 to 11 are called.

Preferred cationic substantive dyes of group (c) are in particular the following compounds:

CH ₃ SO ₄ ^'

(DZ1) (Basic Yellow 87)

Cl ^"

(DZ2)

(DZ3) (Basic Orange 31)

(DZ5) (Basic Red 51)

(DZ7)

The compounds of the formulas (DZ1), (DZ3) and (DZ5) are very particularly preferred cationic substantive dyes of group (c). The cationic direct dyes, which are sold under the trademark Arianor ^® are, according to the invention particularly preferred substantive dyes.

Furthermore, the substrates to be decolorized with naturally occurring, natural dyes such as henna red, henna neutral, henna black, chamomile flower, sandalwood, black tea, buckthorn bark, sage, bluewood, madder root, Catechu, Sedre and alkano root are, be colored.

A third object of the invention is a process for the reductive decolorization of substrates dyed with natural and / or synthetic dyes, in which an agent of the first subject of the invention is applied to the dyed substrate and rinsed off again after a contact time.

The reaction time is preferably 1 to 60 minutes, preferably 5 to 30 minutes. The action of the agent according to the invention can be carried out not only at room temperature but preferably in a temperature range from 15 to 60 ° C., in particular from 25 to 60 ° C. After the exposure time, the hair is rinsed out, wherein preferably a surfactant-containing agent, such as a cleaning agent or a shampoo, applies. Optionally, the substrate can be rinsed out several times, or treated several times with the surfactant-containing agent.

The surface-active agent for rinsing or aftertreatment preferably comprises in a carrier at least one surfactant selected from anionic, zwitterionic, ampholytic, nonionic or cationic surfactants, in particular from nonionic surfactants.

Suitable anionic surfactants in the surface-active compositions according to the invention for rinsing or aftertreatment are all anionic surface-active substances which are suitable for use on the human body. These are characterized by a water-solubilizing, anionic group such as. Example, a carboxylate, sulfate, sulfonate or phosphate group and a lipophilic alkyl group having about 10 to 22 carbon atoms. In addition, glycol or polyglycol ether groups, ester, ether and amide groups and hydroxyl groups may be present in the molecule. Examples of suitable anionic surfactants are, in each case in the form of the sodium, potassium and ammonium and the mono-, di- and Trialkanolammoniumsalze with 2 or 3 C atoms in the alkanol group, linear fatty acids having 10 to 22 carbon atoms (soaps )

Ethercarbonsäuren the formula RO- (CH ₂ -CH ₂ O) _x -CH ₂ -COOH, in which R is a linear alkyl group having 10 to 22 carbon atoms and x = 0 or 1 to 16, acylsarcosides having 10 to 18 C Atoms in the acyl group, acyltaurides having 10 to 18 C atoms in the acyl group, acyl isethionates having 10 to 18 C atoms in the acyl group,

Sulfobernsteinsäuremono- and dialkyl ester having 8 to 18 carbon atoms in the alkyl group and sulfosuccinic monoalkylpolyoxyethylester having 8 to 18 carbon atoms in the alkyl group and 1 to 6 oxyethyl groups, linear alkanesulfonates having 12 to 18 carbon atoms, linear alpha-olefinsulfonates with 12 to 18 carbon atoms, alpha-sulfofatty acid methyl esters of fatty acids having 12 to 18 carbon atoms, alkyl sulfates and Alkylpolyglykolethersulfate the formula RO (CH ₂ -CH ₂ O) _x -SO ₃ H, in the R is a preferably linear alkyl group with 10 bis 18 C-atoms and x = 0 or 1 to 12, mixtures of surface-active hydroxysulfonates according to DE-A-37 25 030, sulfated hydroxyalkylpolyethylene and / or hydroxyalkylene-propylene glycol ethers according to DE-A-37 23 354,

Sulfonates of unsaturated fatty acids having 12 to 24 carbon atoms and 1 to 6 double bonds according to DE-A-39 26 344, Esters of tartaric acid and citric acid with alcohols which are adducts of about 2-15 molecules of ethylene oxide and / or propylene oxide with fatty alcohols having 8 to 22 carbon atoms.

Preferred anionic surfactants are alkyl sulfates, alkyl polyglycol ether sulfates and ether carboxylic acids having 10 to 18 carbon atoms in the alkyl group and up to 12 glycol ether groups in the molecule and in particular salts of saturated and in particular unsaturated C ₈ -C ₂₂ carboxylic acids, such as oleic acid, stearic acid, isostearic acid and palmitic acid.

Zwitterionic surfactants are surface-active compounds which have in the molecule at least one quaternary ammonium group and at least one -COO * ^'' - or -SO ₃ ^'' '- carrying group. Particularly suitable zwitterionic surfactants are the so-called betaines such as N-alkyl-N, N-dimethylammonium glycinates, for example cocoalkyl dimethylammonium glycinate, N-acylaminopropyl N, N-dimethylammonium glycinates, for example cocoacylaminopropyl-dimethylammonium glycinate, and Alkyl-3-carboxymethyl-3-hydroxyethyl imidazoline having in each case 8 to 18 carbon atoms in the alkyl or acyl group and the Kokosacyl- aminoethylhydroxyethylcarboxymethylglycinat. A preferred zwitterionic surfactant is the fatty acid amide derivative known by the CTFA name Cocamidopropyl Betaine.

Ampholytic surfactants are understood as meaning those surface-active compounds which, apart from a C _8-18 -alkyl or -acyl group in the molecule, contain at least one free amino group and at least one -COOH or -SO ₃ H group and are capable of forming internal salts. Examples of suitable ampholytic surfactants are N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids and alkylaminoacetic acids each having about 8 to 18 C Atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-cocoalkylaminopropionate, cocoacylaminoethyl aminopropionate and C ₁₂ - _I8 - sarcosine.

Nonionic surfactants contain as hydrophilic group z. A polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether groups. Such compounds are, for example

Addition products of 2 to 30 moles of ethylene oxide and / or 0 to 5 moles of propylene oxide to linear fatty alcohols having 8 to 22 carbon atoms, to fatty acids having 12 to 22 carbon atoms and on

Alkylphenols having 8 to 15 C atoms in the alkyl group,

C _2-22 fatty acid monoesters and diesters of addition products of 1 to 30 mol ethylene oxide onto glycerol, C _8-22 -Aiky1rnonö- and -oiigogiycosicie and their ethoxylated analogs, addition products of 5 to 60 moles of ethylene oxide with castor oil and hydrogenated castor oil, adducts of ethylene oxide with sorbitan fatty acid addition products of ethylene oxide to fatty acid alkanolamides.

Examples of the cationic surfactants which can be used in the surface-active compositions according to the invention for rinsing or after-treatment are, in particular, quaternary ammonium compounds. Preference is given to ammonium halides such as alkyltrimethylammonium chlorides, dialkyldimethylammonium chlorides and trialkylmethylammonium chlorides, eg. Cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylammonium chloride, lauryldimethylbenzylammonium chloride and tricetylmethylammonium chloride. Further cationic surfactants which can be used according to the invention are the quaternized protein hydrolysates.

Also suitable according to the invention are cationic silicone oils, such as, for example, the commercially available products Q2-7224 (manufacturer: Dow Corning, a stabilized trimethylsilyl amodimethicone), Dow Corning 929 emulsion (containing a hydroxylamino-modified silicone, which is also referred to as amodimethicone) , SM-2059 (manufacturer: General Electric), SLM 55067 (manufacturer: Wacker) and Abil ^® quat 3270 and 3272 (manufacturer: Th. Goldschmidt; di- quaternary polydimethylsiloxanes, quaternium-80).

Alkylamidoamines, in particular fatty acid amidoamines, such as the stearylamidopropyldimethylamine obtainable under the name Tego ^Amid® S 18, are distinguished, in addition to a good conditioning effect, especially by their good biodegradability.

Also very good biodegradability are quaternary Esterverbindungen, so-called "esterquats", such as those sold under the trademark Stepantex ^® methyl hydroxyalkyl- dialkoyloxyalkylammoniummethosulfate.

An example of a suitable cationic surfactant quaternary sugar derivative is the commercial product Glucquat ^® 100, according to CTFA nomenclature a "lauryl methyl Gluceth-10 Hydroxypropyl Dimonium Chloride".

The compounds containing alkyl groups used as surfactants may each be uniform substances. However, it is usually preferred to start from the production of these substances from native plant or animal raw materials, so as to obtain substance mixtures with different, depending on the particular raw material alkyl chain lengths. The surfactants are preferably used in concentrations of 0.5 to 30 wt .-%, based on the weight of the composition, in the surfactant-containing agent for rinsing or aftertreatment.

In addition, the surfactant-containing agent for rinsing or aftertreatment has a pH of less than pH 7. This pH is preferably achieved by the addition of a buffer during the rinsing or rinsing. Aftertreatment step kept constant. Buffer systems which are preferably suitable according to the invention are the phosphate buffer (PO ₄ ^{3 '} / HPO ₄ ^2' / H ₂ PO ₄ ^" / H ₃ PO ₄ ), acetic acid / acetate buffer, citric acid / citrate buffer, KCl / HCl buffer, monophthalate / HCI buffer or monophthalate / NaOH buffer.

After rinsing, it may be advantageous to treat the substrate with an oxidant-containing composition. Hydrogen peroxide is preferably used as the oxidizing agent, preferably in concentrations of from 0.5 to 6% by weight. The reaction time is preferably 1 to 30 minutes, more preferably 1 to 10 minutes. After expiry of the contact time, the oxidant-containing composition is rinsed out.

Preferred colored substrates are those defined in the second subject of the invention.

As preferred natural or synthetic dyes, those dyes were preferably used, as we defined them in the second subject of the invention.

The subject of the invention will be explained by way of example with reference to the following statements.

B e i s p e e l e

The decolorizing agents according to the invention according to Table 1 were provided. The following raw materials were used:

Raw material: Content Manufacturer:

Aromox ^® MCDW dimethyl (kokosnussölalkyl) amine oxide; 30% by weight Akzo Nobel

% Active ingredient in water (INCI

Name: Cocamine oxides)

Hostapur ^® OS C _{15 °. 18-} Olefinsulfonate, sodium salt (powder) Clariant

Brüggolit ^® FF7 contains about 65% 2-hydroxy-2-sulfinoessig- Brüggemann acid sodium salt

The raw materials were gradually mixed in 75 wt% water with stirring. Subsequently, the pH was adjusted and optionally filled with water to 100 wt .-%.

Table 1: Decolorizing agent

Raw material El E2

[% By weight] [% by weight]

Brüggolit ^® FF7 10.0 10.0 Aromox ^® MCDW 3.0

Cetyltrimethylammonium chloride - 3.0

H ₃ PO ₄ ad pH 1, 5 ad pH 1, 5

Water ad 100 ad 100

Method 1:

The following procedure was carried out for all decolorizers of Table 1:

A strand of hair (natural hair, Kerling) was treated with a commercial oxidative hair color (Igora ^® Royal (Schwarzkopf), coloring cream natural clay in a weight ratio of 1 to 1 with the developer Oxigenta ^® (6 wt .-% hydrogen peroxide, Schwarzkopf) over a contact time of 30 minutes at room temperature, rinsed and stored for 24 hours Tress in 30 m! _ Of a Entfärbemittels Tabeiie i dipped over an exposure time of 30 minutes at room temperature, then rinsed with plenty of water and dried in air.

All hair strands showed after the decolorization procedure an excellent lightening and a small hair damage. The strands of hair experienced no darkening even after 2 weeks of storage.

Method 2:

The following procedure was carried out for all decolorizers of Table 1:

A hair tress dyed with the oxidative hair color according to Experiment 1 (natural hair, Messrs. Kerling) was immersed in 30 ml of one of the decolorizing agents of Table 1 over an exposure time of 30 minutes at room temperature. In contrast to experiment 1, however, the tress was then washed for 2 minutes in 50 ml of one of the surfactant-containing rinsing agents according to Table 2, rinsed under running water for less than 1 minute and dried in air.

Table 2: surfactant-containing rinse

Raw material BI B2 B3

[Wt%] [wt%] [wt%]

KH ₂ PO ₄ 5.0 5.0 5.0

Aromox ^® MCDW 10.0 - -

Cetyltrimethylammonium chloride - 10.0 -

HostapurTM ^® OS - - 10.0

H ₃ PO ₄ ad pH 2 ad pH 2 ad pH 2

Water ad 100 ad 100 ad 100

All strands of hair showed improved lightening with each of the B1 to B3 agents after rinsing as compared to a hair strand of Procedure 1 which was rinsed with water only. The hair damage is low. The strands of hair experienced no darkening even after 2 weeks of storage.

Claims

Patent claims

1. A color reductant comprising at least one sulfinic acid derivative of the formula (I) in a carrier

O Il MO-S-R (I)

wherein

M represents a hydrogen atom or one equivalent of a mono- or polyvalent one

Kations, R is derived from a peptide or a radical according to one of the formulas (II) to

(VI) stands,

(IV)

in which mean

Y and Y 'independently of one another are a hydroxyl group, an -NH 2 group or a group -NR ³ R ⁴ , where R ³ and R ⁴ independently of one another represent a (C ₁ to C ₆ ) -alkyl group, a (C ₂ to C ₆ ) Alkenyl group, a (C ₁ to C ₆ ) hydroxyalkyl group, a (C ₂ to C ₆ ) polyhydroxyalkyl group, an aryl group or an Alyl (C ₁ to C ₆ ) alkyl group,

M 'independently of M the characteristics listed under M,

X is a direct bond or an organic radical with two free ones

valences,

R ¹ and R ¹⁴ independently represent a hydrogen atom, a (C ₁ to C ₆ ) alkyl group or a carboxyalkyl group - (CH ₂ ) _m -COOM ", in the M" represents a hydrogen atom or one equivalent of a monovalent or polyvalent cation and m is the number 0, 1 or 2,

R ^{2 is} a hydrogen atom, a (C ₁ to C ₆ ) alkyl group, a carboxyalkyl radical - (CH ₂ J _n -COOM ¹ "with M ¹ "= hydrogen atom or one equivalent of a mono- or polyvalent

Cations and n is an integer 0, 1, 2, 3, 4, 5 or 6, a (C ₁ to C ₆ ) alkyloxycarbonyl, a sulfonic acid group, a

Carbamoyl group, an N ₁ N-di (C ₁ to C ₆ ) alkyl] carbamoyl group, a

N ₁ N ₁ N-TnI (C ₁ to C ₆₎ -alkyϊ] ammonium (Ci to _C6) alkyl group, a

Carboxy (C ₂ -C ₆₎ alkenyl group, a cyano alkyl group (C ₁ to C ₆₎ or a (C ₁ to C ₆₎ alkoxycarbonyl _(C? To C ₆₎ alkyl, aromatic or an aliphatic Heterocycle which may be substituted, or a radical according to formula (IV) or

R ^{2 forms,} together with R ¹ and the remainder of the molecule, an aliphatic 5-, 6- or 7-membered ring which contains at least one cationic, quaternized nitrogen atom as heteroatom, the cationic charge optionally being compensated by one equivalent of a mono- or polyvalent anion becomes,

R ^{7 is} a carboxy group, a sulfonic acid group, a (C ₁ to C ₆ ) -

Alkoxycarbonyl group, a sulfonamide group, a cyano group, a nitro group, a CaMsOXy (C ₁ to C ₆ ) alkyl group, a C ₁ O xy (C ₁ to C ₆ ) alkoxy group or a group -N ⁺ R ¹ R ¹¹ R ¹ ", where R _^1, R" and R ¹ "are independently a (C ₁ to C ₆₎ - alkyl group, a (C ₂ -C ₆₎ -alkenyl, -aryl (C ₁ to C ₆₎ - alkyl group, or a (C ₁ to C ₆ ) hydroxyalkyl group,

R ⁸ and R ⁹ are each independently hydrogen, (C ₁ to C ₆ ) alkyl, (C ₂ to C ₆ ) alkenyl, (C ₁ to C ₆ ) hydroxyalkyl, (C ₂ to C ₆ ) Polyhydroxyalkyl group, a (C ₁ to C ₆ ) alkoxy group, a hydroxy group, an amino group, a carboxy group, a nitro group, a cyano group or a halogen atom,

R ^{10 is} a (Ci to C ₆ ) alkyl group, an optionally substituted

Aryl group, an optionally substituted heteroaryl group, a carboxy (C ₁ to C ₆ ) alkyl group, a carboxy (C ₂ to C ₆ ) alkenyl group, a (C ₁ to C ₆ ) alkoxycarbonyl group or a (C ₁ to C ₆ ) alkoxycarbonyl (C ₁ to C ₆ ) alkyl group,

R ^11, R ¹² and R ¹³ independently represent a hydrogen atom, a (C ₁ to C ₆₎ - alkyl group, a (C ₂ to C ₆₎ alkenyl group, a PeIfIuOr- (C ₁ to C ₆₎ alkyl group, a ( C ₃ to C ₆ ) cycloalkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, a (C ₁ -C ₆₎ - hydroxyalkyl group, a (C ₂ -C ₆₎ -polyhydroxyalkyl group, a APyI- (C ₁ to C ₆₎ alkyl group, a carboxy (C ₆ to _C?) alkyl , a carboxy (C ₂ to C ₆ ) alkenyl group or a (C ₁ to C ₆ ) alkoxycarbonyl (d to C ₆ ) alkyl group, with the proviso that in formula (II) R ¹ and R ^{2 are} not simultaneously represent a hydrogen atom. in combination with at least one compound possessing at least one quaternary nitrogen atom.

2. Composition according to claim 1, characterized in that in formula (I) M, M ', M "and M ¹ " independently represent a hydrogen atom, an ammonium ion, an alkali metal ion, for half an equivalent of an alkaline earth metal ion or half an equivalent a zinc ion, in particular a hydrogen atom, an ammonium ion, a sodium ion, a potassium ion, Vi calcium ion, V-magnesium ion or VΣ zinc ion.

3. Composition according to one of claims 1 or 2, characterized in that according to formula (I) the radicals Y of the formula (II) or the formula (III) and Y 'of the formula (III) independently of one another a hydroxy group or a group Mean -NH ₂ .

4. Composition according to one of claims 1 to 3, characterized in that the radical R is a group of formula (II).

5. Composition according to one of claims 1 to 3, characterized in that it contains at least one of the following sulfinic acids or salts thereof:

2-furyl (amino) methanesulfinic acid,

Amino (thien-2-yl) methanesulfinic acid,

Amino (1 / - / - imidazol-2-yl) methanesulfinic acid,

Amino (1, 3-thiazol-2-yl) methanesulfinic acid,

Amino (1,3-oxazol-2-yl) methanesulfinic acid,

Amino (1 / - / - pyrrol-2-yl) methanesulfinic acid,

Amino (pyridin-2-yl) methanesulfinic acid,

Amino (pyridin-4-yl) methanesulfinic acid,

Amino [3-hydroxy-5- (hydroxymethyl) -2-methylpyridin-4-yl] methanesulfinic acid,

Amino (quinolin-2-yl) methanesulfinic acid,

Amino (quinolin-4-yl) methanesulfinic acid,

1H-benzimidazol-2-yl (amino) methanesulfinic acid, 1, 3-benzothi3zo! -2-yl (affiino) ffiethansuifinic acid,

1, 3-benzoxazol-2-yl (amino) methanesulfinic acid,

Hydroxy (thien-2-yl) methanesulfinic acid,

Hydroxy (thien-3-yl) methanesulfinic

(3-bromothien-2-yl) (hydroxy) methanesulfinic acid,

Hydroxy (1H-imidazol-2-yl) methanesulfinic acid,

Hydroxy (1H-imidazol-5-yl) methanesulfinic acid,

Hydroxy (1-methyl-5-nitro-1 / - / - imidazol-2-yl) methanesulfinic acid,

Hydroxy (1, 3-thiazol-2-yl) methanesulfinic acid,

Hydroxy (1, 3-oxazol-2-yl) methanesulfinic acid,

Hydroxy (1H-pyrrol-2-yl) methansulfϊnsäure,

Hydroxy (pyridin-2-yl) methanesulfinic acid,

Hydroxy (pyridin-4-yl) methanesulfinic acid,

Hydroxy [3-hydroxy-5- (hydroxymethyl) -2-methylpyridin-4-yl] methanesulfinic acid,

Hydroxy (quinolin-2-yl) methanesulfinic acid,

Hydroxy (quinolin-4-yl) methanesulfinic acid,

1 H-benzimidazol-2-yl (hydroxy) methanesulfinic acid,

1, 3-benzothiazol-2-yl (hydroxy) methanesulfinic acid,

I .S-benzoxazole ^ -yKhydroxy-methanesulfinic acid,

1, 2-dihydroxyethane-i, 2-disulfinic acid,

1, 3-dihydroxypropane-i, 3-disulfinic acid,

Hydroxy {4- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

{2-chloro-3- [hydroxy (sulfino) methyl] cyclohexyl} (hydroxy) methanesulfinic acid,

{2-chloro-3- [hydroxy (sulfino) methyl] cyclopentyl} (hydroxy) methanesulfinic acid,

Hydroxy {5- [hydroxy (sulfino) methyl] thien-2-yl} methanesulfinic acid,

Hydroxy {2- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

Hydroxy {3- [hydroxy (sulfino) methyl] phenyl} methanesulfinic acid,

1, 5-dihydroxypentane-1, 5-disulfinic acid,

4-hydroxy-4-sulfinobutansäure,

1-hydroxy-4-methoxy-4-oxobutane-1-sulfinic acid,

1-hydroxy-4-ethoxy-4-oxobutane-1-sulfinic acid,

4-hydroxy-4-sulfinopentansäure,

2-hydroxy-5-methoxy-5-oxopentan-2-sulfinic acid,

2-hydroxy-5-ethoxy-5-oxopentan-2-sulfinic acid,

4-hydroxy-4-sulfinobut-2-enoic acid,

1-hydroxy-4-methoxy-4-oxobut-2-en-1-sulfinic acid,

1-hydroxy-4-ethoxy-4-oxobut-2-en-1-sulfinic acid, 4-hydroxy-4-suifinoρent-2-eπsäure,

2-hydroxy-5-methoxy-5-oxopent-3-en-2-sulfinic acid,

2-hydroxy-5-ethoxy-5-oxopent-3-en-2-sulfinic acid,

5-hydroxy-5-sulfinopentansäure,

1-hydroxy-5-methoxy-5-oxopentan-1-sulfinic acid,

1-hydroxy-5-ethoxy-5-oxopentan-1-sulfinic acid,

5-hydroxy-5-sulfinohexansäure,

2-hydroxy-6-methoxy-6-oxo-hexane-2-sulfinic acid,

2-hydroxy-6-ethoxy-6-oxo-hexane-2-sulfinic acid,

4- [hydroxy (sulfino) methyl] benzoic acid,

4- [amino (sulfino) methyl] benzoic acid,

{4- [hydroxy (sulfino) methyl] phenoxy} acetic acid,

{4- [amino (sulfino) methyl] phenoxy} acetic acid,

3-hydroxy-4- [hydroxy (sulfino) methyl] benzoic acid ₁

3-Hydroxy-4- [amino (sulfino) methyl] benzoic acid,

(4-cyanophenyl) (hydroxy) -methansulfinsäure,

(4-cyanophenyl) (amino) -methansulfinsäure,

(4-nitrophenyl) (hydroxy) -methansulfinsäure,

(4-nitrophenyl) (amino) -methansulfinsäure,

Salt of 4-hydroxy-1, 1-dimethyl-4-sulfinopiperidinium,

Salt of 1-allyl-4-hydroxy-1-methyl-4-sulfinopiperidinium,

4-hydroxy-1, 1-dimethylpiperidinium-4-sulfinate,

1-allyl-4-hydroxy-1-methylpiperidinium-4-sulfinate,

[(2-methoxy-2-oxoethyl) amino] (oxo) methanesulfinic acid,

[(Methylsulfonyl) amino] methanesulfinic acid,

[(Trifluoroethylsulfonyl) amino] methanesulfinic acid,

1-hydroxy-2- (trimethylammonio) ethansulfinat,

Hydroxy [4- (trimethylammonio) phenyl] methanesulfinate,

4- [hydroxy (sulfino) methyl] benzenesulfonic acid,

2- [hydroxy (sulfino) methyl] benzenesulfonic acid,

2-hydroxy-2-sulfo-acetic acid,

2-amino-2-sulfino-acetic acid

2-hydroxy-2-sulfino-propionic acid

2-amino-2-sulfino-propionic acid

3-hydroxy-3-sulfinato propionic acid-

3-amino-3-sulfinato propionic acid-

2-hydroxy-2-sulfinato acetic acid ethyl ester 2-Arrsino-2-Sulfinato-essigsäureetπyiester

1-hydroxy-2-methoxy-2-oxoethansulfinsäure

1-hydroxy-2-ethoxy-2-oxoethansulfinsäure

2-amino-1-hydroxy-2-oxoethansulfinsäure

2- (dimethylamino) -1-hydroxy-2-oxoethansulfinsäure

Hydroxy (sulfino) methanesulfonic acid

Hydroxy (phenyl) methanesulfinic

Hydroxy (4-hydroxyphenyl) methanesulfinic

Hydroxy (4-methoxyphenyl) methanesulfinic.

6. Composition according to one of claims 1 to 5, characterized in that it contains the sulfinic acid derivative in an amount of 0.01 to 20 wt .-%, particularly preferably from 1 to 20 wt .-%, each based on the weight of the composition , contains.

7. Composition according to one of claims 1 to 6, characterized in that the compounds, having at least one quaternary nitrogen atom selected from the group consisting of compounds having a quaternary nitrogen atom, compounds having two quaternary nitrogen atoms, compounds having three quaternary nitrogen atoms , organic N-oxides and polymers derived from a monomer containing at least one quaternary nitrogen atom.

8. Composition according to one of claims 1 to 7, characterized in that the compounds possessing at least one quaternary nitrogen atom are selected from compounds of the formula (Q1),

R ⁴

I

R ¹ -NN ⁺ -R ²

R ³ X ^' (Q1)

in which mean

R ¹ and R ² are each independently a linear or branched (Ci to C ₃₀ ) - alkyl group, a (C ₂ to C ₃₀ ) acyl group or a group -A ¹ -A ² -A ³ -R ⁵ in which

R ^{5 is} a linear or branched (C ₈ to C ₃₀ ) alkyl group, a linear or branched (C ₈ to C ₃₀ ) alkenyl group, a hydroxy (C ₈ to C ₃₀ ) alkyl group or an oligohydroxy (C ₈ - to C ₃₀ ) alkyl group, A ¹ denotes a direct bond or a carbonyl group,

A ^{2 is} a direct bond, a group NH or an oxygen atom, A ^{3 is} a (C ₂ to C ₄ ) -alkylene group or a (C ₂ to C ₄ ) -

Hydroxyalkylene group means

R ^{3 is} a linear or branched (C ₈ to C ₃₀ ) -alkyl group, a (C ₈ to C ₃₀ ) -

Hydroxyalkyl group, a (C ₂ to C ₃₀ ) acyl group, a (C ₂ to C ₄ ) hydroxyalkyl group or an Alyl (C ₁ to C ₆ ) alkyl group, R ⁴ a (C ₁ to C ₄ ) alkyl group or a (C ₂ to C ₄ ) -hydroxyalkyl group,

X ^'is a physiologically acceptable organic or inorganic anion.

9. Composition according to claim 8, characterized in that the compounds of the formula (Q1) are selected from at least one compound from the group which is formed from compounds of the formulas (Q1 -a), (Q1-b) and ( Q1-c),

R ⁷ HO-CH ₂ CH ₂ -NA ³ -A ² -A ¹ -R ⁵ X ^" (Q1 -a)

R ⁸

_R 5_A ^{1 * *} -A ² -A ³ -A ³ -NA ² '-A ^{r -R5} X ^"(Q1-b)

I

(R ¹⁰⁾ _y (Me) _(4-y) N ⁺ X ^"(Q1-c)

wherein

R is a linear or branched (C ₈ - to C ₃₀ ) -alkyl group, linear or branched (C ₈ - to C ₃₀ ) -alkenyl group, a hydroxy (C ₈ - to C ₃₀ ) -alkyl group or a

Oligohydroxy- (C ₈ - to C ₃₀ ) -alkvlgruppe means

R ^{5 *} denotes a linear or branched (C ₈ to C ₃₀ ) -alkyl group or a linear or branched (C ₈ to C ₃₀ ) -alkenyl group,

R ⁶ and R ⁷ independently of one another are a (C ₂ to C ₃₀ ) -acyl group or a linear or branched (C ₁ to C ₃₀ ) -alkyl group, R ⁸ and R ⁹ independently of one another represent a (C ₁ to C ₄ ) alkyl group or (C ₂ to

C ₄ ) hydroxyalkyl group,

R ¹⁰ independently of one another denotes a (C ₈ - to C ₃₀ ) -alkyl group,

A ¹ denotes a direct bond or a carbonyl group,

A ^{1 * represents} a carbonyl group

A ^{2 is} a direct bond, a group NH or an oxygen atom,

A ^{2 * represents} a group NH or an oxygen atom,

A ^{3 is} a (C ₂ to C ₄ ) alkylene group, a (C ₂ to C ₄ ) hydroxyalkylene group, y is 1 or 2 and

X ^'is a physiologically acceptable organic or inorganic anion, with the proviso that in formula (Q1-a) A ^{3 represents} a (C ₂ to C ₄ ) hydroxyalkylene group when A ¹ and A ^{2 are} a direct bond.

10. Composition according to one of claims 1 to 9, characterized in that it additionally contains compounds of the aldehydes or the ketones, selected from at least one member of the group

- oxocarboxylic acids or their salts,

- oxocarboxylic acid ester,

cyclic, linear or branched aliphatic aldehydes,

cyclic, linear or branched aliphatic ketones,

mono- to polyhydroxy-functionalized aldehydes,

mono- to polyhydroxy-functionalized ketones,

alicyclic, aromatic or heterocyclic ketones, and

- alicyclic, aromatic or heterocyclic aldehydes.

11. Composition according to claim 10, characterized in that the compounds selected from aldehydes or ketones in an amount of 0.1 wt .-% to 20 wt .-%, in particular from 0.5 wt .-% to 10 wt. -%, in each case based on the weight of the ready-to-use agent, are included.

12. Composition according to one of claims 1 to 11, characterized in that it has a pH of pH 1 to pH 9, in particular from pH 1, 5 to pH 6, possesses.

13. Composition according to one of claims 1 to 12, characterized in that it additionally contains at least one reductone.

14. Composition according to one of claims 1 to 13, characterized in that it additionally contains as solvent at least one (C ₂ to C ₆ ) -alkyl monoalcohol and / or (C ₂ to C ₆ ) alkanediol, in particular ethanol, isopropanol and / or 1,2-propylene glycol.

15. Use of a composition according to any one of claims 1 to 14 for the decolorization of substrates which are colored with natural and / or synthetic dyes.

16. Use according to claim 15, characterized in that the substrate contains synthetic fibers and / or natural fibers.

17. Use according to one of claims 15 or 16, characterized in that the natural fibers are selected from cellulose-containing fibers, in particular cotton, and keratin-containing fibers, in particular animal or human hair.

18. Use according to any one of claims 15 to 17, characterized in that the synthetic fibers are selected from polyester, polyamide, elastane, viscose or polyacrylic.

19. Use according to one of claims 15 to 18, characterized in that the substrates to be decolored are dyed with oxidation dyes and / or substantive dyes.

20. A process for the reductive decolorization of natural and / or synthetic dyes colored substrates, characterized in that an agent according to any one of claims 1 to 14 is applied to the dyed substrate and rinsed again after a contact time.

21. The method according to claim 20, characterized in that the substrate contains synthetic fibers and / or natural fibers.

22. The method according to claim 21, characterized in that the natural fibers are selected from cellulosic fibers, in particular cotton, and keratin fibers, in particular animal or human hair.

23. The method according to any one of claims 20 to 22, characterized in that the synthetic fibers are selected from polyester, polyamide, elastane, viscose or polyacrylic.

24. The method according to any one of claims 20 to 23, characterized in that the substrates to be decolored with oxidation dyes and / or substantive dyes are colored.