FR3158884A1 - Coloring process comprising at least the use of a composition comprising at least one oxidation dye, at least one alkaline agent, at least one anionic acrylic polymer and at least one polyol - Google Patents

Abstract

The present invention relates to a method for dyeing keratin fibers, preferably human keratin fibers such as hair and/or eyebrows and/or beards, preferably eyebrows and/or beards, comprising at least the use of at least one composition (C1) comprising at least one oxidation dye, at least one alkaline agent, at least one anionic acrylic polymer, and at least one polyol. The invention further relates to a device for dyeing said keratin fibers, comprising at least one compartment containing at least said composition (C1) and at least one compartment containing at least one oxidizing composition (O) comprising one or more chemical oxidizing agents.

Description

Coloring process comprising at least the use of a composition comprising at least one oxidation dye, at least one alkaline agent, at least one anionic acrylic polymer and at least one polyol

The present invention relates to a process for coloring keratin fibers, preferably human keratin fibers such as hair, beard and/or eyebrows, preferably eyebrows and/or beard, comprising at least the use of at least one composition (C1) comprising at least one oxidation dye, at least one alkaline agent, at least one anionic acrylic polymer and at least one polyol.

The invention further relates to a device for coloring said keratin fibers comprising at least one compartment containing at least said composition (C1) and at least one compartment containing at least one oxidizing composition (O) comprising one or more chemical oxidizing agents.

In the field of coloring, it is known to dye keratin fibers, in particular human keratin fibers, such as hair and/or eyebrows, with dye compositions containing oxidation dye precursors, in particular oxidation bases, such as ortho- or para-phenylenediamines, ortho- or para-aminophenols or heterocyclic compounds such as pyrazoles, pyrazolinones or pyrazolo-pyridines. These oxidation bases are colorless or weakly colored compounds which, combined with chemical oxidizing agents, can give rise to colored compounds by an oxidative condensation process.

It is also possible to vary the shades obtained with these oxidation bases by combining them with couplers or color modifiers. The variety of molecules used in the oxidation bases and couplers allows for a rich palette of colors to be obtained.

At the time of use, the dye compositions are generally mixed with oxidizing compositions, comprising one or more oxidizing agents, and then the resulting ready-to-use compositions are then applied to the keratin fibers. After a pause time, the keratin fibers can be rinsed with water and then washed, and possibly dried, to achieve the desired colorations.

The dye compositions used must in particular have good application properties on keratin fibres, and in particular good rheological properties so as not to run, during their application, on the eyes, the face, and/or more generally outside the areas that one wishes to dye, for example clothing.

In particular, in the case of eyebrow coloring, the dye compositions must be sufficiently thick and adhere to the eyebrow hairs to minimize the risk of dripping onto the face and/or into the eyes and/or onto clothing, which could be unpleasant for users.

Furthermore, such compositions must also make it possible to color the eyebrows after a relatively short waiting time, for example after a waiting time which may be less than 15 minutes, while leading to powerful and tenacious colorings with respect to external agents such as light, bad weather, washing, perspiration and/or friction.

Thus there is a real need to implement a process for dyeing keratin fibers, in particular human keratin fibers, such as hair and/or eyebrows and/or beards, which does not have the drawbacks mentioned above, that is to say which is capable of leading, after a relatively short break time, for example less than 15 minutes, to satisfactory dyeing performance, in particular to good build-up, intensity, chromaticity of the color while having low selectivity and good resistance over time, and the implementation of which does not entail risks of the composition flowing onto unwanted areas.

The present invention therefore relates in particular to a process for coloring keratin fibers, preferably human keratin fibers such as hair and/or eyebrows and/or beard, preferably eyebrows, comprising at least the use of at least one composition (C1) comprising:
- one or more oxidation dyes,
- one or more alkaline agents,
- one or more anionic acrylic polymers,
- one or more polyols;
the weight ratio between the anionic acrylic polymer(s) and the polyol(s) being greater than or equal to 0.1.

The process makes it possible to achieve the above objectives, in particular by implementing compositions having improved application properties, in particular rheological properties, while leading to better tinctorial performances, in particular to powerful and not very selective colorations, having good resistance over time, for example having resistance over time of at least 5 weeks.

In other words, when implementing the coloring process according to the invention on keratin fibers, preferably on the eyebrows and/or beard, the risks of the composition running onto the face, eyes and/or areas that one does not wish to dye, for example clothing, are effectively minimized.

In particular, the eyebrow coloring process effectively minimizes the risk of smudging into the eyes and uses a composition with good adhesion to eyebrow hairs.

The coloring process according to the invention advantageously uses a composition having a flow threshold greater than or equal to 10 Pa, preferably greater than or equal to 15 Pa, determined at a temperature of 33°C.

By "flow threshold" is meant, within the meaning of the present invention, the pressure necessary to cause a macroscopic flow of the composition.

The yield point can be determined by performing a stress scan, for example using a rotational rheometer with imposed stress, for example an RS600 rheometer at a temperature ranging from 23°C to 33°C.

Furthermore, the composition according to the invention has the advantage of being easy to apply.

Advantageously, when the composition is applied to eyebrows, it can easily be removed after a short pause time, preferably less than or equal to 20 minutes, more preferably less than or equal to 15 minutes, with cotton.

In addition, the coloring process leads to improved tinctorial performance, in particular to powerful, low-selectivity colorings, having good durability over time, and this after a relatively short pause time, preferably less than or equal to 20 minutes, more preferably less than or equal to 15 minutes, even more preferably ranging from 5 to 10 minutes.

The coloring process according to the invention leads in particular to powerful, non-selective colorings that are resistant to external agents, in particular light, bad weather, washing, perspiration and/or rubbing.

Advantageously, the coloring process makes it possible to achieve non-selective colorings, i.e. homogeneous colorings along the same keratin fiber which is generally differently sensitized between its tip and its root, and/or lasting over time, in particular lasting at least five weeks.

The coloring process uses a composition according to the invention having good rheological and tinctorial properties.

The coloring process also uses a composition with an improved carbon footprint.

The coloring process also uses a composition that is stable over time, for example for a period of 1 month, at a temperature ranging from 2 to 50°C, preferably from 4 to 45°C.

For the purposes of the present invention, the term "stable" means that the visual and microscopic appearance, viscosity and/or pH of the composition used does not change or changes little during a storage period, in particular at least one month at a temperature likely to vary from 2 to 50°C.

The invention further relates to a device for coloring said keratin fibers comprising at least one compartment containing at least the composition (C1) as defined above and at least one compartment containing at least one oxidizing composition (O) comprising one or more chemical oxidizing agents.

In what follows, and unless otherwise indicated, the limits of a domain of values are included in this domain, in particular in the expressions “ between ” and “ ranging from … to … ”.

Furthermore, the expression "at least one" used in this description is equivalent to the expression " one or more ".

Similarly, the expression " at least " as used in this description is equivalent to the expression " greater than or equal to ".

Oxidation dye

As indicated above, the coloring process uses at least one composition comprising at least one or more oxidation dyes.

The oxidation dyes can be chosen from one or more oxidation bases, optionally associated with one or more couplers.

Preferably, the oxidation dye(s) comprise one or more oxidation bases.

Preferably, the composition according to the invention comprises one or more oxidation bases.

Oxidation bases can be present as salts, solvates, and/or salt solvates.

The addition salts of the oxidation bases present in the composition according to the invention are in particular chosen from addition salts with an acid such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, methanesulfonates, phosphates and acetates, and addition salts with a base such as sodium hydroxide, potassium hydroxide, ammonia, amines or alkanolamines.

Furthermore, the solvates of the oxidation bases represent more particularly the hydrates of said oxidation bases and/or the association of said oxidation bases with a linear or branched C ₁ to C ₄ alcohol such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

For example, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and the corresponding addition salts, solvates and/or solvates of the salts.

Examples of para-phenylenediamines that may be mentioned include para-phenylenediamine, para-toluenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine, N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, N,N-bis(β-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis(β-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(ß-hydroxyethyl)amino-2-chloroaniline, 2-β-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-(β-hydroxypropyl)-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-para-phenylenediamine, N-(β,γ-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-β-hydroxyethyloxy-para-phenylenediamine, 2-β-acetylaminoethyloxy-para-phenylenediamine, N-(β-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene and 3-hydroxy-1-(4'-aminophenyl)pyrrolidine and the addition salts, solvates and/or solvates of their salts.

Among the above-mentioned para-phenylenediamines, para-phenylenediamine, para-toluenediamine, 2-isopropyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine , 2-β-hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, N,N-bis(β-hydroxyethyl)-para-phenylenediamine, 2-chloro-para-phenylenediamine and 2-β-acetylaminoethyloxy-para-phenylenediamine and the corresponding addition salts, solvates and/or solvates of their salts.

Examples of bis(phenyl)alkylenediamines that may be mentioned include N,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N,N'-bis(β-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(β-hydroxyethyl)-N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(4-methylaminophenyl)tetramethylenediamine, N,N'-bis(ethyl)-N,N'-bis(4'-amino-3'-methylphenyl)ethylenediamine and 1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane and the corresponding addition salts, solvates and solvates of salts.

Examples of para-aminophenols mentioned include para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(β-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol and the addition salts, solvates and solvates of the salts.

Among the ortho-aminophenols that can be mentioned are, for example, 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol and the corresponding addition salts, solvates and solvates of the salts.

Among the heterocyclic bases that can be mentioned are, for example, pyridine, pyrimidine and pyrazole derivatives.

Among the pyridine derivatives which may be mentioned are the compounds for example described in GB 1 026 978 and GB 1 153 196, for example 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine and 3,4-diaminopyridine and the corresponding addition salts, solvates and solvates of the salts.

Other pyridine oxidation bases which are useful in the present invention are the 3-aminopyrazolo[1,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in patent application FR 2 801 308. Examples which may be mentioned include pyrazolo[1,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[1,5-a]pyrid-3-ylamine, 2-morpholin-4-ylpyrazolo[1,5-a]pyrid-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyrid-3-ylamine, (3-aminopyrazolo[1,5-a]pyrid-7-yl)methanol, 2-(3-aminopyrazolo[1,5-a]pyrid-5-yl)ethanol, 2-(3-aminopyrazolo[1,5-a]pyrid-7-yl)ethanol, (3-aminopyrazolo[1,5-a]pyrid-2-yl)methanol, 3,6-diaminopyrazolo[1,5-a]pyridine, 3,4-diaminopyrazolo[1,5-a]pyridine, pyrazolo[1,5-a]pyridine-3,7-diamine, 7-morpholin-4-ylpyrazolo[1,5-a]pyrid-3-ylamine, pyrazolo[1,5-a]pyridine-3,5-diamine, 5-morpholin-4-ylpyrazolo[1,5-a]pyrid-3-ylamine, 2-[(3-aminopyrazolo[1,5-a]pyrid-5-yl)(2-hydroxyethyl)-amino]ethanol, 2-[(3-aminopyrazolo[1,5-a]pyrid-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-5-ol, 3-aminopyrazolo[1,5-a]pyridin-4-ol, 3-aminopyrazolo[1,5-a]pyridin-6-ol, 3-aminopyrazolo[1,5-a]pyridin-7-ol, 2-β-hydroxyethoxy-3-amino-pyrazolo[1,5-a]pyridine; 2-(4-dimethylpiperazinium-1-yl)-3-amino-pyrazolo[1,5-a]pyridine; and the corresponding addition salts, solvates and solvates of the salts.

More particularly, the oxidation bases which are useful in the present invention are chosen from the 3 aminopyrazolo-[1,5 a]-pyridines and preferably substituted on the carbon atom 2 by:
a) a (di)(C1-C6)(alkyl)amino group, said alkyl group possibly being substituted by at least one hydroxy, amino, imidazolium group;
(b) a heterocycloalkyl group containing 5 to 7 members and 1 to 3 heteroatoms, optionally cationic, optionally substituted by one or more (C1-C6)alkyl groups, such as a di(C1-C4)alkylpiperazinium group; or
(c) a (C1-C6)alkoxy group optionally substituted by one or more hydroxy groups such as a β-hydroxyalkoxy group and the corresponding addition salts, solvates and solvates of the salts.

Among the pyrimidine derivatives that may be mentioned are the compounds described, for example, in patents DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 or patent application WO 96/15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triamino-pyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and their addition salts, solvates and solvates of the salts and their tautomeric forms, when a tautomeric equilibrium exists.

Among the pyrazole derivatives that may be mentioned are the compounds described in patents DE 3843892, DE 4133957 and patent applications WO 94/08969, WO 94/08970, FR A-2 733 749 and DE 195 43 988, such as 4,5-diamino-1-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-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-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, 4,5-diamino-1-ethyl-3-hydroxymethyl-pyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole, 4,5-Diamino-3-methyl-1-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, 3,4,5-triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole, 3,5-diamino-4-(β-hydroxyethyl)amino-1-methylpyrazole and the corresponding addition salts, solvates and/or solvates of the salts. 4,5-Diamino-1-(β-methoxyethyl)pyrazole can also be used.

A 4,5-diaminopyrazole will preferably be used and even more preferably 4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or a corresponding salt, solvate and/or salt solvate.

Pyrazole derivatives which may also be mentioned include diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and the corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-di-(2-hydroxyethyl)-1,2-dihydropyrazol-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazino[1,2-a]pyrazol-1-one, 4-amino-1,2-diethyl-5-(pyrrolidin-1-yl)-1,2-dihydropyrazol-3-one, 4-amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one, 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one their salts, their solvates and/or solvates of their salts.

Preferably, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and/or a corresponding salt, solvate and/or salt solvate will be used.

Preferably, 4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and/or 2-β-hydroxyethoxy-3-amino-pyrazolo[1,5-a]pyridine and/or a corresponding salt, solvate and/or salt solvate will be used as heterocyclic bases.

Preferably, the oxidation base(s) are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, their solvates and/or the solvates of their salts and their mixtures; more preferably from 2-methoxymethyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, and their addition salts, their solvates and/or the solvates of their salts and their mixtures.

Preferably, the oxidation base(s) is(are) present in a total content ranging from 0.001 to 20% by weight, preferably from 0.005 to 15% by weight, more preferably from 0.01 to 10% by weight, better still from 0.05 to 5%, even better still from 0.1 to 3% by weight, relative to the weight of the composition.

According to a preferred embodiment, when the composition comprises at least one oxidation base chosen from 2-methoxymethyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, their addition salts, their solvates and/or the solvates of their salts and their mixtures, this (they) is (are) present in a total content ranging from 0.001 to 20% by weight, preferably from 0.005 to 15% by weight, more preferably from 0.01 to 10% by weight, better still from 0.05 to 5%, even better still from 0.1 to 3% by weight, relative to the total weight of the composition.

In a particular embodiment, the composition is free of oxidation bases chosen from paraphenylenediamine, paratoluenediamine, their addition salts, their solvates, and the solvates of their salts.

The oxidation dye(s) may also be chosen from one or more couplers, which may be chosen from the couplers conventionally used for coloring keratin fibers.

Preferably, the composition according to the invention comprises one or more couplers.

Among the couplers useful according to the invention, mention may in particular be made of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based coupling agents and heterocyclic coupling agents as well as the corresponding addition salts, solvates and solvates of their salts.

Examples include 6-hydroxy benzomorpholine, hydroxyethyl-3-4-methylenedioxyaniline, 2-amino 5-ethylphenol, 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(ß-hydroxyethyloxy)benzene, 2-amino-4-(ß-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 3,5-diamino-2,6-dimethoxypyridine, 2,6-bis(ß-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole, 2,6-dimethyl[3,2-c]-1,2,4-triazole and 6-methylpyrazolo[1,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(ß–hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 3-amino-2-chloro-6-methylphenol, the corresponding addition salts, solvates, solvates of salts and corresponding mixtures.

Preferably, the coupler(s) is(are) chosen from: 6-hydroxy benzomorpholine, its addition salts, its solvates and/or the solvates of its salts, hydroxyethyl-3-4-methylenedioxyaniline, its addition salts, its solvates and/or the solvates of its salts, 2-amino 5-ethylphenol, its addition salts, its solvates and/or the solvates of its salts and mixtures thereof.

In general, the addition salts of the couplers which can be used in the context of the invention are in particular chosen from addition salts with an acid, such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates and addition salts with a base such as sodium hydroxide, potassium hydroxide, ammonia, amines or alkanolamines.

Furthermore, the solvates more particularly represent the hydrates of these couplers and/or the association of these couplers with a linear or branched C1 to C4 alcohol such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

According to a particular embodiment, the composition is free of oxidation couplers chosen from resorcinol, 2-methyl resorcinol, 4-chloro resorcinol, their addition salts, their solvates, and the solvates of their salts.

When the composition comprises one or more oxidation couplers, the total content of the coupler(s) present in the composition according to the invention varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

When present, the total content of couplers chosen from 6-hydroxy benzomorpholine, hydroxyethyl-3-4-methylenedioxyaniline, 2-amino 5-ethylphenol as well as their addition salts, their solvates and/or the solvates of their salts, preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

When present, the total content of the couplers chosen from 6-hydroxy benzomorpholine, its addition salts, its solvates and/or the solvates of its salts as well as their addition salts, their solvates and/or the solvates of their salts, preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

When present, the total content of couplers chosen from hydroxyethyl-3-4-methylenedioxyaniline, its addition salts, its solvates and/or the solvates of its salts as well as their addition salts, their solvates and/or the solvates of their salts preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

When present, the total content of couplers chosen from 2-amino 5-ethylphenol, its addition salts, its solvates and/or the solvates of its salts as well as their addition salts, their solvates and/or the solvates of their salts, preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

Preferably, the total content of the oxidation dyes preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better still from 0.01 to 10% by weight, even better still from 0.05 to 5% by weight, even better still from 0.1 to 3% by weight relative to the total weight of the composition.

Alkaline agent

As indicated above, the coloring process uses at least one composition comprising one or more alkaline agents.

The alkaline agent(s) may be mineral, organic or hybrid alkaline agents.

For the purposes of the present invention, the terms “alkaline agent” or “alkalizing agent” are used interchangeably.

The mineral alkalizing agent(s) are preferably chosen from ammonia, alkali carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali or alkaline earth metal phosphates such as sodium phosphates or potassium phosphates, sodium or potassium hydroxides, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate and mixtures thereof.

The organic alkalizing agent(s) are preferably chosen from alkanolamines, amino acids, organic amines other than alkanolamines, oxyethylenated and/or oxypropylenated ethylenediamines, 1,3 diaminopropane, spermine, spermidine and mixtures thereof.

Alkanolamine means an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched _C1 - _C8 alkyl groups carrying one or more hydroxyl radicals.

Particularly suitable for carrying out the invention are organic amines chosen from alkanolamines such as mono-, di- or tri-alkanolamines, comprising one to three hydroxyalkyl radicals, identical or not, in C ₁ -C ₄ .

In particular, the alkanolamine(s) are chosen from monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-1-propanol, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, tris-hydroxymethylamino-methane and mixtures thereof.

Advantageously, the amino acids are basic amino acids comprising an additional amine function. Such basic amino acids are preferably chosen from histidine, lysine, arginine, ornithine, citrulline.

The organic amine may also be chosen from heterocyclic organic amines. In addition to histidine already mentioned in the amino acids, mention may in particular be made of pyridine, piperidine, imidazole, triazole, tetrazole and benzimidazole. The organic amine may also be chosen from amino acid dipeptides. As amino acid dipeptides which may be used in the present invention, mention may in particular be made of carnosine, anserine and balenine. The organic amine may also be chosen from compounds comprising a guanidine function. As amines of this type other than arginine which may be used in the present invention, mention may in particular be made of creatine, creatinine, 1,1-dimethylguanidine, 1,1-diethylguanidine, glycocyamine, metformin, agmatine, n-amidinoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2-([amino(imino)methyl]amino)ethane-1-sulfonic acid.)

As hybrid compounds, guanidine carbonate or monoethanolamine hydrochloride can be used in particular.

The alkaline agent(s) useful according to the invention is (are) preferably chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia, carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, silicates or metasilicates of alkali or alkaline earth metals such as sodium metasilicate and mixtures thereof, more preferably from ammonia and alkanolamines, better still from alkanolamines, better still monoethanolamine.

Preferably, the alkalizing agent(s) is(are) organic.

In a particular embodiment, the composition according to the invention is free of ammonia.

Preferably, the alkaline agent(s) is(are) chosen from the group consisting of alkanolamines, more preferably monoethanolamine.

The total content of the alkaline agent(s) is greater than or equal to 2% by weight relative to the total weight of the composition.

Preferably, the total content of alkaline agents is greater than or equal to 2% by weight, more preferably greater than or equal to 3% by weight, relative to the total weight of the composition.

Preferably, the total content of alkaline agents varies from 2 to 40% by weight, more preferably from 2.5 to 30% by weight, better still from 3 to 20% by weight, even better still from 3.2 to 15% by weight relative to the total weight of the composition.

In a preferred embodiment, the total content of the alkaline agent(s) chosen from alkanolamines, preferably monoethanolamine, is preferably greater than or equal to 2% by weight, preferably ranging from 2 to 40% by weight, more preferably from 2.5 to 30% by weight, even more preferably from 3 to 20% by weight, better still from 3.2 to 15% by weight, relative to the total weight of the composition.

According to one embodiment, the pH of the composition is between 8 and 13; preferably, between 9.0 and 12.

The pH of the composition can be adjusted to the desired value using acidic or alkaline agent(s) usually used in dyeing keratin fibers such as those described above, or even using buffer systems known to those skilled in the art.

Anionic acrylic polymer

As indicated above, the coloring process uses at least one composition further comprising at least one anionic acrylic polymer.

The anionic acrylic polymer(s) is or are in particular thickening polymers.

For the purposes of the present invention, the term “thickening polymer” means a polymer having, in solution or dispersion at 1% by weight of active material in water or in ethanol at 25°C, a viscosity greater than 0.2 Poise at a shear rate of 1 s-1. The viscosity is measured with a HAAKE RS600 viscometer from THERMO ELECTRON. This viscometer is an imposed stress viscometer in cone-plane geometry (for example, diameter 60 mm).

The anionic acrylic polymer(s) is or are in particular non-associative thickening polymers.

By the expression "non-associative thickener", is meant according to the invention, a non-amphiphilic thickening polymer, i.e. which does not comprise both at least one hydrophilic unit and at least one hydrophobic unit consisting of at least one C ₈ -C ₃₀ alkyl or alkenyl fatty chain.

Preferably, the anionic acrylic polymer(s) is or are one or more non-associative thickening polymers.

The anionic acrylic polymers may be chosen from those derived from at least one monomer of formula (II):

• n représente un entier compris inclusivement entre 0 et 10,
• A désigne un groupement –CH₂– ou –CH₂=CH₂–,
• R¹désigne un atome d'hydrogène, un groupement C₁-C₆alkyle, phényle ou benzyle,
• R²désigne un atome d'hydrogène, un groupement C₁-C₆alkyle ou carboxyle,
• R³désigne un atome d'hydrogène, un groupement C₁-C₆alkyle, un groupement –(CH₂)_p-X, phényle ou benzyle, avec p étant un entier compris inclusivement entre 1 et 6 et X représentant un groupe carboxylique (COOH), sulfonique (SO₃H), ou phosphorique (PO₄H₂),
• Z désigne un groupement alkylène linéaire ou ramifié comportant de 1 à 6 atomes de carbone,
• R⁴désigne un groupe hydroxyle, alcoxy en C₁-C₆linéaire ou ramifié, ou un radical NH-Z-R⁵, et
• R⁵désigne un groupe carboxylique, sulfonique, ou phosphorique

formula (II) in which,

• n represents an integer between 0 and 10 inclusive,
• A denotes a group –CH ₂ – or –CH ₂ =CH ₂ –,
• R ¹ denotes a hydrogen atom, a C ₁ -C ₆ alkyl, phenyl or benzyl group,
• R ² denotes a hydrogen atom, a C ₁ -C ₆ alkyl or carboxyl group,
• R ³ denotes a hydrogen atom, a C ₁ -C ₆ alkyl group, a –(CH ₂ ) _p -X, phenyl or benzyl group, with p being an integer between 1 and 6 inclusive and X representing a carboxylic (COOH), sulfonic (SO ₃ H), or phosphoric (PO ₄ H ₂ ) group,
• Z denotes a linear or branched alkylene group containing from 1 to 6 carbon atoms,
• R ⁴ denotes a hydroxyl group, a linear or branched C ₁ -C ₆ alkoxy, or a radical NH-ZR ⁵ , and
• R ⁵ denotes a carboxylic, sulfonic, or phosphoric group

it being understood that the carboxylic, sulfonic or phosphoric acid groups can be partially or totally neutralized by an organic or mineral base or can be esterified by lower alcohols R-OH with R corresponding to a linear or branched C ₁ -C ₆ alkyl group.

According to a particular embodiment of the invention, the carboxylic, sulfonic or phosphoric acid groups are not esterified.

Preferably n is 0.

According to a particular embodiment of the invention, R ¹ represents a hydrogen atom or a C ₁ -C ₄ alkyl radical such as methyl, and R ² and R ³ represent a hydrogen atom or R ¹ , R ² and R ³ represent a C ₁ -C ₄ alkyl radical such as methyl. According to another preferred embodiment, R ⁴ represents a hydroxyl or C ₁ -C ₆ alkoxy group.

The preferred anionic acrylic polymers according to the invention are:

HAS) Homo- or copolymers of acrylic or methacrylic acid.

Among the (meth)acrylic acid copolymers, mention may be made of crosslinked copolymers of (meth)acrylic acid and C ₁ -C ₆ alkyl acrylate, in particular the product sold under the name VISCOATEX 538C by the company COATEX which is a crosslinked copolymer of methacrylic acid and ethyl acrylate in aqueous dispersion at 38% Active Matter or the product sold under the name ACULYN 33 by the company ROHM & HAAS which is a crosslinked copolymer of acrylic acid and ethyl acrylate in aqueous dispersion at 28% Active Matter. Mention may be made more particularly of the crosslinked methacrylic acid/ethyl acrylate copolymer in the form of a 30% aqueous dispersion manufactured and sold under the name CARBOPOL AQUA SF-1 by the company NOVEON.

Among the homopolymers of acrylic acid, we can cite those of the CARBOPOLS family, including in particular CARBOPOL 980 (homopolymer of acrylic acid crosslinked with a pentaerythritol allyl ether, a sucrose allyl ether, or a propylene allyl ether). Among the crosslinked homopolymers of acrylic acid, we can also cite, for example, the products sold under the names CARBOPOLS 981, 954, 2984 and 5984 by the company GOODRICH or the products sold under the names SYNTHALEN M and SYNTHALEN K by the company 3 VSA;

Among the ammonium acrylate homopolymers, we can cite the product sold under the name MICROSAP PAS 5193 by the company HOECHST. Among the ammonium acrylate and acrylamide copolymers, we can cite the product sold under the name BOZEPOL C NOUVEAU or the product PAS 5193 sold by the company HOECHST (they are described and prepared in the documents FR 2 416 723, USP2798053 and USP 2 923 692);

B) Polyacrylamides containing sulfonic groups.

Polymers comprising sulfonic groups are polymers comprising vinylsulfonic, styrenesulfonic, naphthalenesulfonic or acrylamido alkylsulfonic units.

These polymers can be chosen in particular from:

- salts of polyvinylsulfonic acid having a weight-average molecular weight of between approximately 1,000 and 100,000 and their copolymers with an unsaturated comonomer such as acrylic or methacrylic acids and their esters, acrylamide or its derivatives, vinyl ethers and vinylpyrrolidone;

- salts of polystyrene sulfonic acid, the sodium salts having a weight-average molecular weight of approximately 500,000 and approximately 100,000 being sold respectively under the names "FLEXAN 500" and "FLEXAN 130" by NATIONAL STARCH. These compounds are described in patent FR 2,198.7 19;

- homopolymers of acrylamidoethylpropane sulfonic acid of formula (III) (AMPS) such as salts of polyacrylamide (C ₁ -C ₆ )alkylsulfonic acids such as those mentioned in US patent 4,128,631 and more particularly polyacrylamidoethylpropane sulfonic acid sold under the name "COSMEDIA POLYMER HSP 11 80" by HENKEL and polyacrylamidomethylpropane sulfonic acid crosslinked and partially neutralized at 50% by ammonia sold under the name "HOSTACERIN AMPS" by the company HOECHST;

- crosslinked or non-crosslinked copolymers, neutralized or not, comprising from 15 to 60% by weight of AMPS units and from 40 to 85% by weight of units
(C ₁ -C ₆ )alkyl(meth)acrylamide or (C ₁ -C ₆ )alkyl(meth)acrylate units relative to the polymer, such as those described in application EP- 750 899;

- terpolymers comprising from 10 to 90 mol% of acrylamide units, from 0.1 to 10 mol% of AMPS units and from 5 to 80 mol% of
n-(C ₁ -C ₆ )alkylacrylamide units, such as those described in patent US- 5089578.

Among the copolymers of 2-acrylamido-2-methyl-propane sulfonic acid partially or totally neutralized (by a base such as sodium hydroxide, potassium hydroxide or an amine), mention may be made in particular of the product described in example 1 of document EP-A-503 853 (forming an integral part of the content of the description), and in particular the product marketed by the company SEPPIC under the name SEPIGEL 305.

Preferably, the anionic acrylic polymer(s) is or are crosslinked.

Preferably, the composition according to the invention comprises one or more crosslinked anionic acrylic polymers, more preferably chosen from crosslinked homopolymers or copolymers of acrylic or methacrylic acid and their mixtures.

More preferably, the composition according to the invention comprises one or more anionic acrylic polymers chosen from crosslinked homopolymers of acrylic or methacrylic acid and their mixtures, in particular the products sold under the names CARBOPOLS 980, 981, 954, 2984 and 5984 by the companies NOVEON, ASHLAND, or LUBRIZOL, or the products sold under the names SYNTHALEN M and SYNTHALEN K by the company 3 VSA. Such polymers have the INCI name Carbomer.

Preferably, the total content of anionic polymer(s) according to the invention is greater than or equal to 0.5% by weight, more preferably greater than or equal to 0.6% by weight, relative to the total weight of the composition.

Advantageously, the composition according to the invention comprises at least 0.6% by weight of at least one crosslinked anionic acrylic polymer, preferably chosen from crosslinked homopolymers or copolymers of acrylic or methacrylic acid and their mixtures, even more preferably chosen from crosslinked homopolymers of acrylic or methacrylic acid, relative to the total weight of the composition.

Preferably, the total content of anionic polymer(s) according to the invention is within the range from 0.5 to 5% by weight, more preferably from 0.6 to 3% by weight, better still from 0.7 to 2% by weight of active material relative to the total weight of the composition.

Preferably, the total content of crosslinked anionic acrylic polymer(s) according to the invention is in the range from 0.5 to 5% by weight, more preferably from 0.6 to 3% by weight, better still from 0.7 to 2% by weight of active material relative to the total weight of the composition.

According to an advantageous embodiment, the coloring process uses a composition comprising at least one alkaline agent chosen from alkanolamines and their mixtures, and at least one anionic acrylic polymer chosen from crosslinked anionic acrylic polymers, preferably chosen from crosslinked homopolymers or copolymers of acrylic or methacrylic acid and their mixtures.

Polyol

As indicated above, the coloring process uses a composition further comprising one or more polyols.

For the purposes of the present invention, the term “polyol” means an organic compound consisting of a hydrocarbon chain optionally interrupted by one or more oxygen atoms and carrying at least two free hydroxyl groups (-OH) carried by different carbon atoms, this compound being able to be cyclic or acyclic, linear or branched, saturated or unsaturated.

Preferably, the polyols are different from fatty alcohols as defined above.

More particularly, the polyol(s) comprise from 2 to 30 hydroxy groups, more preferably from 2 to 10 hydroxy groups, even more preferably from 2 to 3 hydroxy groups.

The polyol(s) are preferably chosen from diglycerin, glycerin, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars such as glucose and mixtures thereof, preferably from glycerin, propane-1,3-diol and mixtures thereof.

Preferably, the composition comprises one or more polyols chosen from diglycerin, glycerin, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars such as glucose and mixtures thereof, preferably from glycerin, propane-1,3-diol, and mixtures thereof.

Preferably, the composition comprises one or more polyols chosen from propylene glycol, propane-1,3-diol, glycerin and their mixture, better still propylene glycol, glycerin and their mixture, better still propylene glycol.

Advantageously, the polyol(s) are present in a total content greater than or equal to 3% by weight relative to the total weight of the composition.

Advantageously, the polyol(s) are present in a total content varying from 1 to 20% by weight, preferably from 2 to 10% by weight relative to the total weight of the composition, more preferably from 3 to 20% by weight and better still from 3.5 to 10% by weight, relative to the total weight of the composition.

As indicated above, the weight ratio between the anionic acrylic polymer(s) and the polyol(s) is greater than or equal to 0.1, preferably strictly greater than 0.1, more preferably varies from 0.15 to 1, even better from 0.17 to 0.5.

Fatty acid

The coloring process uses at least one composition which may also comprise one or more fatty acids.

By "fatty acids" is meant a long-chain carboxylic acid comprising at least 6 carbon atoms, in particular from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. The fatty acids according to the invention preferably comprise from 10 to 30 carbon atoms and better still from 14 to 22 carbon atoms. They may optionally be hydroxylated.

Preferably, the fatty acids present in the composition according to the invention comprise at least one carboxylic acid group and an alkyl chain, linear or branched, saturated or unsaturated, in particular unsaturated, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, more preferably from 10 to 30 carbon atoms and better still from 14 to 22 carbon atoms.

Preferably, the fatty acids comprise at least one carboxylic acid group and an alkyl chain, linear or branched, saturated or unsaturated, in particular unsaturated, comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

Preferably, the fatty acids comprise at least one carboxylic acid group and an unsaturated, linear or branched alkyl chain comprising from 14 to 22 carbon atoms.

More preferably, the fatty acids according to the invention are chosen from compounds of structure R-C(O)OH in which R represents an alkyl group, linear or branched, saturated or unsaturated, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, preferably from 11 to 24 carbon atoms.

For the purposes of the present invention, the fatty acids present in the composition are neither oxyalkylenated nor glycerolated.

Fatty acids can be chosen from solid fatty acids, liquid fatty acids and their mixtures.

For the purposes of the present invention, the term "solid fatty acid" means a fatty acid having a melting point greater than 25°C, preferably greater than or equal to 28°C, more preferably greater than or equal to 30°C at atmospheric pressure (1,013.10 ⁵ Pa).

The solid fatty acids used in the present invention are in particular chosen from myristic acid, cetyl acid, stearyl acid, cetyl acid, arachydic acid, stearic acid, lauric acid, behenic acid, 12-hydroxystearic acid and mixtures thereof.

Particularly preferably, the solid fatty acid(s) are chosen from lauric acid, myristic acid, cetyl acid, stearic acid.

For the purposes of the present invention, the term “liquid fatty acid” means a fatty acid having a melting point of less than or equal to 25°C, preferably less than or equal to 20°C at atmospheric pressure (1,013.10 ⁵ Pa).

The liquid fatty acid(s) according to the invention may be chosen from oleic acid, linoleic acid, arachidonic acid, isostearic acid, isopalmitic acid, and mixtures thereof, preferably oleic acid.

Preferably, the fatty acids present in the composition according to the invention are liquid fatty acids, in particular chosen from fatty acids comprising at least one carboxylic acid group and an unsaturated, linear or branched alkyl chain comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

Preferably, the fatty acids present in the composition according to the invention are liquid fatty acids, in particular chosen from oleic acid, linoleic acid, linolenic acid and their mixtures, more preferably oleic acid.

Preferably, the fatty acids present in the composition according to the invention are lauric, oleic, linoleic, linolenic, undecylenic, isocetyl, isostearyl, cetyl, stearyl and cetylstearyl acids, and mixtures thereof, preferably lauric acid, oleic acid and mixtures thereof.

Preferably, the fatty acid(s) are chosen from myristic acid, palmitic acid, stearic acid, oleic acid, lauric acid and mixtures thereof, preferably lauric acid.

Advantageously, the fatty acid(s) are present in a total content ranging from 0.1 to 15% by weight, preferably from 0.5 to 10%, preferentially from 1 to 5% by weight relative to the total weight of the composition.

In a particular embodiment, advantageously, the solid fatty acid(s) are present in a total content ranging from 0.1 to 15% by weight, preferably from 0.5 to 10%, preferentially from 1 to 5% by weight relative to the total weight of the composition.

Nonionic surfactants

The coloring process according to the invention uses a composition which may comprise one or more non-ionic surfactants.

The non-ionic surfactant(s) which can be used in the composition of the present invention are described in particular, for example, in “Handbook of Surfactants” by M.R. PORTER, published by Blackie & Son (Glasgow and London), 1991, pp. 116-178.

Examples of non-ionic surfactants include the following compounds, alone or in mixtures:
- oxyalkylenated alkyl(C ₈ -C ₂₄ )phenols;
- polyoxyalkylenated fatty alcohols;
- _C8 to _C30 fatty acid amides, saturated or unsaturated, linear or branched, oxyalkylenated;
- esters of _C8 to _C30 fatty acids, saturated or unsaturated, linear or branched, and polyethylene glycols;
- esters of _C8 to _C30 fatty acids, saturated or unsaturated, linear or branched, and of sorbitol, preferably oxyethylenated;
- fatty acid esters, in particular C ₈ -C ₂₄ , and preferably C ₁₆ -C ₂₂ , and (poly)oxyalkylenated glycerol ethers, in particular oxyethylenated and/or oxypropylenated
- esters of fatty acids and sucrose,
- alkylpolyglycosides,
- oxyethylenated vegetable oils, saturated or not;
- ethylene oxide and/or propylene oxide condensates;
- derivatives of N -alkyl(C ₈ -C ₃₀ )glucamine and N -acyl(C ₈ -C ₃₀ )-methylglucamine;
- amine oxides.

Preferably, the composition according to the invention comprises one or more non-ionic surfactants chosen from non-ionic surfactants of alkylpolyglycoside type, polyoxyalkylenated fatty alcohols and their mixtures.

The non-ionic surfactants of alkylpolyglycoside type which can be used according to the invention are chosen from the compounds of the following general formula: R ₁ O-(R ₂ O)t-(G)v in which:
- R ₁ represents a linear or branched alkyl or alkenyl radical containing 6 to 24 carbon atoms, in particular 8 to 18 carbon atoms, or an alkylphenyl radical of which the linear or branched alkyl radical contains 6 to 24 carbon atoms, in particular 8 to 18 carbon atoms;
- R ₂ represents an alkylene radical containing 2 to 4 carbon atoms,
- G represents a sugar unit containing 5 to 6 carbon atoms,
- t denotes a value ranging from 0 to 10, preferably from 0 to 4,
- v denotes a value ranging from 1 to 15, preferably from 1 to 4.

Preferably, the nonionic surfactants of alkyl(poly)glycoside type are compounds of the formula described above in which:
- R ₁ denotes a saturated or unsaturated, linear or branched alkyl radical containing from 8 to 18 carbon atoms,
- R ₂ represents an alkylene radical containing 2 to 4 carbon atoms,
- t denotes a value ranging from 0 to 3, preferably equal to 0,
- G denotes glucose, fructose or galactose, preferably glucose;
- the degree of polymerization, that is to say the value of v, which can range from 1 to 15, preferably from 1 to 4; the average degree of polymerization being more particularly between 1 and 2, and better still from 1.1 to 1.5 on average.

The glucosidic bonds between the sugar units are generally of the 1-6 or 1-4 type, preferably of the 1-4 type.

Preferably, the alkyl(poly)glycoside is an alkyl(poly)glucoside.

Preferably, the alkyl(poly)glycoside nonionic surfactants are (C ₆ -C ₂₄ alkyl)polyglycosides, in particular (C ₆ -C ₁₈ alkyl)polyglycosides, such as coco glucoside, caprylyl/capryl glucoside, lauryl glucoside, decyl glucoside and cetearyl glucoside, and mixtures thereof.

Commercial products include products sold by the company COGNIS under the names PLANTAREN® (600 CS/U, 1200 and 2000) or PLANTACARE® (818, 1200 and 2000); products sold by the company SEPPIC under the names ORAMIX CG 110 and ORAMIX® NS 10; the products sold by the company BASF under the name LUTENSOL GD 70, the products sold by the company CHEM Y under the name AG10 LK, the products sold by the company EVONIK GOLDSCHMIDT under the trade names TEGO CARE CG 90 or TEGO CARE CG 90 MB, the products sold by the company SEPPIC under the trade names Montanov® 68, Montanov® 68 MB, Montanov® 14 or Montanov® 202, or the products sold by the company BASF under the name Emulgade® PL 68/50.

For the purposes of the invention, fatty alcohol means an alcohol containing from 8 to 30 carbon atoms, preferably from 10 to 28 carbon atoms and even more preferably from 12 to 24 carbon atoms.

The polyoxyalkylenated fatty alcohols preferably have a number of alkylene oxide units, in particular C _2-4 , better still C _2-3 , greater than or equal to 2, better still ranging from 2 to 100, more preferably ranging from 2 to 50, better still from 2 to 20, even better still from 2 to 10.

Preferably, the polyoxyalkylenated fatty alcohols are chosen from oxyethylenated fatty alcohols, the fatty chain of the fatty alcohol of which is C ₈ -C ₃₀ , preferably C ₁₀ -C ₂₈ , more preferably C ₁₂ -C ₂₄ , saturated or unsaturated, linear or branched and comprising at least 2 oxyethylene groups, such as, for example, the addition products of ethylene oxide with lauryl alcohol, in particular those comprising from 2 to 100 oxyethylene groups and more particularly those comprising from 4 to 50 oxyethylene groups (Laureth-4 in CTFA name); the addition products of ethylene oxide with behenyl alcohol, in particular those comprising from 4 to 100 oxyethylene groups and more particularly those comprising from 6 to 30 oxyethylene groups (Beheneth-6 to Beheneth-30 in CTFA names); addition products of ethylene oxide with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), in particular those comprising from 4 to 100 oxyethylene groups (Ceteareth-4 to Ceteareth-100 in CTFA names); addition products of ethylene oxide with cetyl alcohol, in particular those comprising from 4 to 100 oxyethylene groups and more particularly those comprising from 4 to 45 oxyethylene groups (Ceteth-4 to Ceteth-45 in CTFA names); addition products of ethylene oxide with stearyl alcohol, in particular those comprising from 4 to 100 oxyethylene groups (Steareth-4 to Steareth-100 in CTFA names); addition products of ethylene oxide with isostearyl alcohol, in particular those comprising from 4 to 50 oxyethylene groups (Isosteareth-4 to Isosteareth-50 in CTFA names); addition products of ethylene oxide with decyl alcohol, in particular that comprising 4 to oxyethylene groups (Deceth-4 in CTFA name); addition products of ethylene oxide with oleyl alcohol, in particular those comprising from 4 to 150 oxyethylene groups and more particularly those comprising from 4 to 106 oxyethylene groups (Oleth-4 to Oleth-106 in CTFA names); ethylene oxide addition products with isocetyl alcohol having from 4 to 30 oxyethylene groups (for example Isoceteh-4, Isoceteh-10, Isoceteth-15, Isoceteth-20, Isoceteh-25) and mixtures thereof.

Preferably, the polyoxyalkylenated fatty alcohols are chosen from addition products of ethylene oxide with lauryl alcohol, addition products of ethylene oxide with decyl alcohol, addition products of ethylene oxide with oleyl alcohol, in particular those comprising from 2 to 100 oxyethylene groups, preferably from 2 to 35 oxyethylene groups, and mixtures thereof, better still laureth-12, deceth-3, oleth-30 and mixtures thereof.

Preferably, the composition according to the invention comprises one or more non-ionic surfactants chosen from polyoxyalkylenated fatty alcohols, in particular oxyethylenated C ₁₀ -C ₂₈ fatty alcohols, better still C ₁₀ -C ₂₀ , and comprising at least 2 oxyethylene groups, preferably ranging from 2 to 35 oxyethylene groups.

Preferably, the total content of the non-ionic surfactant(s) varies from 0.1 to 40% by weight, preferably from 1 to 30% by weight, more preferably from 5 to 25% by weight, better still from 7 to 20% by weight relative to the total weight of the composition.

Fatty substances other than fatty acids

The coloring process uses a composition which may also include one or more fatty substances other than fatty acids.

By "fatty substance" is meant an organic compound insoluble in water at 25°C and at atmospheric pressure (1,013.10 ⁵ Pa) (solubility less than 5% by weight, and preferably less than 1% by weight, even more preferably less than 0.1% by weight). They have in their structure at least one hydrocarbon chain comprising at least 6 carbon atoms and/or a chain of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as for example chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), vaseline oil or decamethylcyclopentasiloxane.

The fatty substances which can be used in the present invention are neither (poly)oxyalkylenated nor (poly)glycerolated.

Preferably, the fatty substances useful according to the invention are non-silicone.

The term “non-silicone fatty substance” means a fatty substance not containing Si-O bonds and the term “silicone fatty substance” means a fatty substance containing at least one Si-O bond.

The fatty substances useful according to the invention may be liquid fatty substances (or oils) and/or solid fatty substances. Liquid fatty substance means a fatty substance having a melting point less than or equal to 25°C and at atmospheric pressure (1,013.10 ⁵ Pa). Solid fatty substance means a fatty substance having a melting point greater than 25°C at atmospheric pressure (1,013.10 ⁵ Pa).

For the purposes of the present invention, the melting point corresponds to the temperature of the most endothermic peak observed in thermal analysis (differential scanning calorimetry or DSC) as described in ISO 11357-3; 1999. The melting point can be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name "MDSC 2920" by the company TA Instruments. In the present application, all melting points are determined at atmospheric pressure (1,013.10 ⁵ Pa).

More particularly, the liquid fatty substance(s) according to the invention may be chosen from C ₆ to C ₁₆ liquid hydrocarbons, liquid hydrocarbons comprising more than 16 carbon atoms, non-silicone oils of animal origin, triglyceride-type oils of vegetable or synthetic origin, fluorinated oils, liquid fatty alcohols, liquid esters of fatty acid and/or fatty alcohol other than triglycerides, and mixtures thereof.

It is recalled that alcohols and fatty esters more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising from 6 to 40, better still from 8 to 30 carbon atoms, optionally substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or not.

With regard to liquid C ₆ to C ₁₆ hydrocarbons, the latter may be linear, branched, possibly cyclic, and are preferably chosen from alkanes. For example, mention may be made of hexane, cyclohexane, undecane, dodecane, isododecane, tridecane, isoparaffins such as isohexadecane, isodecane, and mixtures thereof.

Liquid hydrocarbons comprising more than 16 carbon atoms may be linear or branched, of mineral or synthetic origin, and are preferably chosen from paraffin or vaseline oils, polydecenes, hydrogenated polyisobutene such as Parléam®, and their mixtures.

As hydrocarbon oils of animal origin, we can cite perhydrosqualene.

Triglyceride oils of vegetable or synthetic origin are preferably chosen from liquid triglycerides of fatty acids containing 6 to 30 carbon atoms such as triglycerides of heptanoic or octanoic acids or, for example, sunflower, corn, soybean, pumpkin, grape seed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor, avocado oils, triglycerides of caprylic/capric acids such as those sold by the company Stearineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by the company Dynamit Nobel, jojoba oil, shea butter oil, and mixtures thereof.

With regard to fluorinated oils, these can be chosen from perfluoromethylcyclopentane and perfluoro-1,3 dimethylcyclohexane, sold under the names “FLUTEC® PC1” and “FLUTEC® PC3” by the company BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names “PF 5050®” and “PF 5060®” by the company 3M, or bromoperfluorooctyl sold under the name “FORALKYL®” by the company Atochem; nonafluoro-methoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name “PF 5052®” by the company 3M.

The liquid fatty alcohols suitable for implementing the invention are more particularly chosen from saturated or unsaturated, linear or branched, preferably unsaturated or branched alcohols containing from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. These fatty alcohols are neither oxyalkylenated nor glycerolated. Examples that may be mentioned are octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, ricinoleyl alcohol, undecylenic alcohol or linoleyl alcohol, and mixtures thereof. Preferably, oleyl alcohol will be used.

As regards the liquid esters of fatty acids and/or fatty alcohols, other than the triglycerides mentioned above, mention may in particular be made of esters of saturated or unsaturated aliphatic mono or polyacids, linear in C ₁ to C ₂₆ or branched in C ₃ to C ₂₆ and of saturated or unsaturated aliphatic mono or polyalcohols, linear in C ₁ to C ₂₆ or branched in C ₃ to C ₂₆ , the total number of carbons in the esters being greater than or equal to 6, more advantageously greater than or equal to 10.

Preferably, for monohydric alcohol esters, at least one of the alcohol or acid is branched.

Monoesters include dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl acetyl ricinoleate; octyl isononanoate; 2-ethylhexyl isononate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, such as ethyl-2-hexyl palmitate, 2-octyldecyl palmitate; alkyl myristates such as isopropyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

Preferably among the monoesters of monoacids and monoalcohols, ethyl and isopropyl palmitates, alkyl myristates such as isopropyl or ethyl myristate, isocetyl stearate, ethyl-2-hexyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and mixtures thereof will be used.

Also useful are esters of C ₄ to C ₂₂ di- or tricarboxylic acids and C ₁ to C ₂₂ alcohols and esters of mono-, di-, or tricarboxylic acids and C ₂ to C ₂₆ di-, tri-, tetra-, or pentahydroxy alcohols.

Examples include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisocyanate; polyethylene glycol distearates, and mixtures thereof.

The composition may also comprise, as fatty ester, esters and diesters of sugars of C ₆ to C ₃₀ fatty acids, preferably C ₁₂ to C ₂₂ . It is recalled that the term "sugar" means oxygenated hydrocarbon compounds which have several alcohol functions, with or without aldehyde or ketone function, and which comprise at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides different from the anionic polysaccharides described below.

Suitable sugars include, for example, sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives, particularly alkylated ones, such as methylated derivatives such as methylglucose.

The esters of sugars and fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described above and of C ₆ to C ₃₀ fatty acids, preferably C ₁₂ to C ₂₂ , linear or branched, saturated or unsaturated. If they are unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or not.

The esters can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonate, or mixtures thereof, such as in particular the mixed esters oleo-palmitate, oleo-stearate, palmito-stearate.

More particularly, mono- and di-esters are used, and in particular mono- or di-oleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, of sucrose, glucose or methylglucose, and mixtures thereof.

An example is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

Preferably, a liquid ester of monoacid and monoalcohol will be used.

According to one embodiment, the fatty substances useful according to the invention are chosen from liquid fatty substances, preferably from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols and liquid fatty esters and their mixtures, more preferably from liquid fatty alcohols.

Preferably, the liquid fatty substance(s) are chosen from liquid fatty alcohols, in particular oleic alcohol.

Solid fatty bodies other than fatty acids preferably have a viscosity greater than 2 Pa.s, measured at 25°C and at a shear rate of 1 s ^-1 .

The solid fatty body(ies) are preferably chosen from solid fatty alcohols, solid esters of fatty acids and/or fatty alcohols, waxes, ceramides, and mixtures thereof.

By "fatty alcohol" is meant a long-chain aliphatic alcohol comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms and comprising at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylenated nor glycerolated.

The solid fatty alcohols may be saturated or unsaturated, linear or branched, and comprise from 8 to 40 carbon atoms, preferably from 10 to 30 carbon atoms. Preferably, the solid fatty alcohols have the structure R-OH with R denoting a linear alkyl group, optionally substituted by one or more hydroxyl groups, comprising from 8 to 40, preferably from 10 to 30 carbon atoms, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

The solid fatty alcohols that may be used are preferably chosen from saturated or unsaturated, linear or branched (mono)alcohols, preferably linear and saturated, containing from 8 to 40 carbon atoms, better still from 10 to 30, or even from 12 to 24 atoms, even better still from 14 to 22 carbon atoms.

The solid fatty alcohols that may be used may be chosen from, alone or in a mixture: myristic or myristyl alcohol (or 1-tetradecanol); cetyl alcohol (or 1-hexadecanol); stearyl alcohol (or 1-octadecanol); arachidyl alcohol (or 1-eicosanol); behenyl alcohol (or 1-docosanol); lignoceryl alcohol (or 1-tetracosanol); ceryl alcohol (or 1-hexacosanol); montanyl alcohol (or 1-octacosanol); myricyl alcohol (or 1-triacontanol).

Preferably, the solid fatty alcohol is chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, arachidyl alcohol and mixtures thereof, such as cetylstearyl or cetearyl alcohol. Particularly preferably, the solid fatty alcohol is cetylstearyl or cetearyl alcohol.

The solid fatty acid and/or fatty alcohol esters that may be used are preferably chosen from esters derived from C ₉ -C ₂₆ carboxylic fatty acid and/or C ₉ -C ₂₆ fatty alcohol.

Preferably, these solid fatty esters are esters of a saturated, linear or branched carboxylic acid containing at least 10 carbon atoms, preferably 10 to 30 carbon atoms and more particularly 12 to 24 carbon atoms, and of a saturated, linear or branched monoalcohol containing at least 10 carbon atoms, preferably 10 to 30 carbon atoms and more particularly 12 to 24 carbon atoms. The saturated carboxylic acids may optionally be hydroxylated, and are preferably monocarboxylic acids.

Esters of C4- _C22 di- or tricarboxylic acids and _C1 - _C22 alcohols and esters of mono-, di- or tricarboxylic acids and _C2 - _C26 di-, tri-, tetra- or pentahydroxy alcohols may also be used.

Examples include octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, hexyl stearate, octyl stearate, myristyl stearate, cetyl stearate, stearyl stearate, octyl pelargonate, cetyl myristate, myristyl myristate, stearyl myristate, diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, di n-propyl adipate, dioctyl adipate, dioctyl maleate, dioctyl, octyl palmitate, myristyl palmitate, cetyl palmitate, stearyl palmitate, and mixtures thereof.

Preferably, the solid fatty acid and/or fatty alcohol esters are chosen from C ₉ -C ₂₆ alkyl palmitates, in particular myristyl, cetyl and stearyl palmitates; C ₉ -C ₂₆ alkyl myristates such as cetyl myristate, stearyl myristate and myristyl myristate; C ₉ -C ₂₆ alkyl stearates, in particular myristyl, cetyl and stearyl stearates; and mixtures thereof.

A wax, within the meaning of the present invention, is a lipophilic compound, solid at 25°C and atmospheric pressure, with a reversible solid/liquid state change, having a melting temperature above approximately 40°C and up to 200°C, and having an anisotropic crystalline organization in the solid state. Generally speaking, the size of the wax crystals is such that the crystals diffract and/or diffuse light, giving the composition comprising them a more or less opaque cloudy appearance. By bringing the wax to its melting temperature, it is possible to make it miscible with oils and to form a microscopically homogeneous mixture, but by bringing the temperature of the mixture back to room temperature, a recrystallization of the wax is obtained, detectable microscopically and macroscopically (opalescence).

In particular, the waxes suitable for the invention may be chosen from waxes of animal, vegetable, mineral origin, non-silicone synthetic waxes and their mixtures.

Examples include hydrocarbon waxes, such as beeswax, especially of biological origin, lanolin wax, and Chinese insect waxes; rice bran wax, carnauba wax, candelilla wax, ouricury wax, alfa wax, berry wax, shellac wax, japan wax and sumac wax; montan wax, orange and lemon waxes, microcrystalline waxes, paraffins and ozokerite; polyethylene waxes, waxes obtained by Fisher-Tropsch synthesis and waxy copolymers, as well as their esters.

We can also mention microcrystalline waxes from _C20 to _C60 , such as Microwax HW.

We can also mention the PM 500 polyethylene wax marketed under the reference Permalen 50-L polyethylene.

Mention may also be made of waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched fatty chains, from C ₈ to C ₃₂ . Among these, mention may in particular be made of isomerized jojoba oil, such as trans isomerized partially hydrogenated jojoba oil, in particular that manufactured or marketed by the company Desert Whale under the commercial reference Iso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated lanolin oil, and di-(trimethylol-1,1,1 propane) tetrastearate, in particular that sold under the name Hest 2T-4S® by the company HETERENE.

Waxes obtained by hydrogenation of castor oil esterified with cetyl alcohol can also be used, such as those sold under the names Phytowax ricin 16L64® and 22L73® by the company SOPHIM.

As a wax, a C ₂₀ to C ₄₀ alkyl (hydroxystearyloxy) stearate (the alkyl group comprising 20 to 40 carbon atoms) can also be used, alone or in a mixture. Such a wax is sold in particular under the names "Kester Wax K 82 P®", "Hydroxypolyester K 82 P®" and "Kester Wax K 80 P®" by the company KOSTER KEUNEN.

It is also possible to use microwaxes in the compositions of the invention; Examples include carnauba microwaxes, such as that marketed under the name MicroCare 350® by the company MICRO POWDERS, synthetic wax microwaxes, such as that marketed under the name MicroEase 114S® by the company MICRO POWDERS, microwaxes consisting of a mixture of carnauba wax and polyethylene wax, such as those marketed under the names Micro Care 300® and 310® by the company MICRO POWDERS, microwaxes consisting of a mixture of carnauba wax and synthetic wax, such as that marketed under the name Micro Care 325® by the company MICRO POWDERS, polyethylene microwaxes, such as those marketed under the names Micropoly 200®, 220®, 220L® and 250S® by the company MICRO POWDERS and polytetrafluoroethylene microwaxes, such as those marketed under the names Microslip 519® and 519 L® by the company MICRO POWDERS.

The waxes are preferably chosen from mineral waxes such as paraffin wax, vaseline wax, lignite wax or ozokerite; vegetable waxes such as cocoa butter or cork or sugar cane fiber waxes, olive wax, rice wax, hydrogenated jojoba wax, Ouricoury wax, Carnauba wax, Candelila wax, Alfa wax, or absolute flower waxes such as blackcurrant flower essential wax sold by the company BERTIN (France); waxes of animal origin such as beeswax or modified beeswax (cerabellina), spermaceti, lanolin wax and lanolin derivatives; microcrystalline waxes; and mixtures thereof.

Ceramides or ceramide analogues such as glycoceramides, which may be used in the compositions according to the invention, are known; mention may be made in particular of ceramides of classes I, II, III and V according to the DAWNING classification.

The ceramides or their analogues that may be used preferably correspond to the following formula: R ³ CH(OH)CH(CH ₂ OR ² )(NHCOR ¹ ), in which:
R ¹ denotes a linear or branched, saturated or unsaturated alkyl group derived from C ₁₄ -C ₃₀ fatty acids, this group possibly being substituted by a hydroxyl group in the alpha position, or a hydroxyl group in the omega position esterified by a saturated or unsaturated C ₁₆ -C ₃₀ fatty acid;
R ² denotes a hydrogen atom, a (glycosyl)n group, a (galactosyl)m group or a sulfogalactosyl group, in which n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8;
R ³ denotes a C ₁₅ -C ₂₆ hydrocarbon group, saturated or unsaturated in the alpha position, this group possibly being substituted by one or more C ₁ -C ₁₄ alkyl groups; it being understood that in the case of natural ceramides or glycoceramides, R ³ may also denote a C ₁₅ -C ₂₆ alpha-hydroxyalkyl group, the hydroxyl group being optionally esterified by a C ₁₆ -C ₃₀ alpha-hydroxy acid.

The more particularly preferred ceramides are the compounds for which R ¹ denotes a saturated or unsaturated alkyl derived from C ₁₆ -C ₂₂ fatty acids; R ² denotes a hydrogen atom and R ³ denotes a linear saturated C ₁₅ group.

Preferably, ceramides are used for which R ¹ denotes a saturated or unsaturated alkyl group derived from C ₁₄ -C ₃₀ fatty acids; R ² denotes a galactosyl or sulfogalactosyl group; and R ³ denotes a -CH=CH-(CH ₂ ) ₁₂ -CH ₃ group.

It is also possible to use compounds for which R ¹ denotes a saturated or unsaturated alkyl radical derived from C ₁₂ -C ₂₂ fatty acids; R ² denotes a galactosyl or sulfogalactosyl radical and R ³ denotes a saturated or unsaturated C ₁₂ -C ₂₂ hydrocarbon radical and preferably a -CH=CH-(CH ₂ ) ₁₂ -CH ₃ group.

Particularly preferred compounds that may also be mentioned are 2-N-linoleoylamino-octadecane-1,3-diol; 2-N-oleoylamino-octadecane-1,3-diol; 2-N-palmitoylamino-octadecane-1,3-diol; 2-N-stearoylamino-octadecane-1,3-diol; 2-N-behenoylamino-octadecane-1,3-diol; 2-N-[2-hydroxy-palmitoyl]-amino-octadecane-1,3-diol; 2-N-stearoyl amino-octadecane-1,3,4 triol and in particular N-stearoyl phytosphingosine 2-N-palmitoylamino-hexadecane-1,3-diol, N-linoleoyldihydrosphingosine, N-oleoyldihydrosphingosine, N-palmitoyldihydrosphingosine, N-stearoyldihydrosphingosine, and N-behenoyldihydrosphingosine, N-docosanoyl N-methyl-D-glucamine, N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)cetyl acid amide and bis-(N-hydroxyethyl N-cetyl) malonamide; and mixtures thereof. Preferably, N-oleoyldihydrosphingosine will be used.

The solid fatty substances are preferably chosen from solid fatty alcohols, in particular from cetyl alcohol, stearyl alcohol and their mixtures such as cetylstearyl or cetearyl alcohol.

Butters can also be used.

For the purposes of the present invention, the term “butter” (also called “pasty fat”) means a lipophilic fatty compound with a reversible solid/liquid state change and comprising, at a temperature of 25°C and atmospheric pressure (760 mm Hg), a liquid fraction and a solid fraction. Preferably, the butter(s) according to the invention have a melting start temperature greater than 25°C and an end melting temperature less than 60°C.

Preferably the particular butter(s) are of vegetable origin such as those described in Ullmann's Encyclopedia of Industrial Chemistry (“Fats and Fatty Oils”, A. Thomas, Published Online: 15 JUN 2000, DOI: 10.1002/14356007.a10_173, item 13.2.2.2. Shea Butter, Borneo Tallow, and Related Fats (Vegetable Butters)).

We can cite more particularly shea butter, Nilotica Shea butter ( Butyrospermum parkii ), Galam butter, ( Butyrospermum parkii ), Borneo butter or fat or tengkawang tallow) ( Shorea stenoptera ), Shorea butter, Illipé butter, Madhuca butter or Bassia Madhuca longifolia , mowrah butter ( Madhuca Latifolia ), Katiau butter ( Madhuca mottleyana ), Phulwara butter ( M. butyracea ), mango butter ( Mangifera indica ) , Murumuru butter ( Astrocaryum murumuru ), Kokum butter ( Garcinia Indica ), Ucuuba butter ( Virola sebifera ), Tucuma butter, Painya butter ( Kpangnan ) ( Pentadesma butyracea ), coffee butter ( Coffea arabica ), apricot butter ( Prunus Armeniaca ), macadamia butter ( Macadamia Ternifolia ), grape seed butter ( Vitis vinifera ), avocado butter ( Persea gratissima ), olive butter ( Olea europaea ), sweet almond butter ( Prunus amygdalus dulcis ) and cocoa butter sunflower butter.

Shea butter is an example of a favorite butter.

Shea butter is commonly extracted from the fruits (also called "almonds" or "nuts") of the Butyrospemim Parkii tree. Each fruit contains between 45 and 55% fat, which is usually extracted and refined.

According to a preferred embodiment, the composition according to the invention comprises one or more solid fatty bodies other than fatty acids, preferably chosen from solid fatty alcohols and their mixtures, such as cetearyl alcohol.

According to another preferred embodiment, the composition according to the invention comprises one or more solid fatty substances other than fatty acids, preferably chosen from solid fatty alcohols and their mixtures, and one or more liquid fatty substances other than fatty acids, preferably chosen from liquid fatty alcohols, and liquid fatty esters, and their mixtures, more preferably from liquid fatty alcohols, preferably oleic alcohol.

Preferably, the composition according to the invention comprises one or more solid fatty substances other than fatty acids chosen from liquid esters of fatty acids and/or fatty alcohols.

Advantageously, the total content of the fatty substance(s), other than fatty acids, varies from 5 to 30% by weight, more preferably from 8 to 25% by weight, and better still from 10 to 20% by weight, relative to the total weight of the composition.

In a particular embodiment, the composition according to the invention comprises one or more solid fatty bodies other than fatty acids, the total content of the solid fatty body(ies) other than fatty acids preferably varying from 4 to 30% by weight, more preferably from 5 to 25% by weight, and better still from 6 to 20% by weight, relative to the total weight of the composition.

In another particular embodiment, the composition according to the invention comprises one or more liquid fatty substances other than fatty acids, the total content of the liquid fatty substance(s) other than fatty acids preferably varying from 0.5 to 15% by weight, more preferably from 1 to 10% by weight, and better still from 2 to 5% by weight, relative to the total weight of the composition.

Sequestering

The coloring process also uses a composition which may include one or more sequestering agents.

The definition of a “sequestering agent” (or “chelating agent”) is well known to those skilled in the art and refers to a compound or mixture of compounds capable of forming a chelate with a metal ion. A chelate is an inorganic complex in which a compound (the sequestering or chelating agent) is coordinated to a metal ion, i.e. it forms one or more bonds with the metal ion (formation of a cycle including the metal ion).

A sequestering (or chelating) agent generally comprises at least two electron donor atoms which allow the formation of bonds with the metal ion.

In the context of the present invention, the sequestering agent(s) may be chosen from carboxylic acids, preferably aminocarboxylic acids, phosphonic acids, preferably aminophosphonic acids, polyphosphoric acids, preferably linear polyphosphoric acids, their salts and derivatives.

Salts include alkali metal, alkaline earth metal, ammonium and substituted ammonium salts.

Examples of carboxylic acid-based chelating agents include the following compounds: diethylenetriamine pentaacetic acid (DTPA), ethylenediamine disuccinic acid (EDDS) and trisodium ethylenediamine disuccinate such as Octaquest E30 from OCTEL, ethylenediaminetetraacetic acid (EDTA), and its salts such as disodium EDTA, tetrasodium EDTA, ethylenediamine-N,N'-diglutaric acid (EDDG), glycinamide-N,N'-disuccinic acid (GADS), glycinamide-N,N'-disuccinic acid (GADS), 2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N-N'-bis(ortho-hydroxyphenyl acetic acid) (EDDHA), N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), N-2-hydroxyethyl N,N diacetic acid and glyceryl imino diacetic acid (as described in EP-A-317,542 and EP-A-399,133), iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516,102), beta-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid, aspartic acid-N-monoacetic acid (described in EP-A-509,382), iminodisuccinic acid chelators (IDSA) (as described in EP-A-509,382), ethanoldiglycine acid, phosphonobutane tricarboxylic acid such as the compound marketed by Bayer under the reference Bayhibit AM, N,N-dicarboxymethyl glutamic acid and its salts such as tetrasodium glutamate diacetate (GLDA) such as Dissolvine GL38 or 45S from Akzo Nobel.

Examples of mono- or polyphosphonic acid-based chelating agents include the following compounds: diethylenetriamine-penta (methylene phosphonic acid) (DTPMP), ethane-1-hydroxy-1,1,2-triphosphonic acid (E1HTP), ethane-2-hydroxy-1,1,2-triphosphonic acid (E2HTP), ethane-1-hydroxy-1,1-triphosphonic acid (EHDP), ethan-1,1,2-triphosphonic acid (ETP), ethylenediaminetetramethylene phosphonic acid (EDTMP), hydroxyethane-1,1 diphosphonic acid (HEDP, or etidronic acid), and salts such as disodium etidronate, tetrasodium etidronate.

Examples of polyphosphoric acid-based chelators include the following compounds: sodium tripolyphosphate (STP), tetrasodium diphosphate, hexametaphophoric acid, sodium metaphosphate, phytic acid.

According to one embodiment, the sequestering agent(s) useful according to the invention are phosphorus sequestering agents, i.e. sequestering agents which comprise one or more phosphorus atoms, preferably at least two phosphorus atoms.

The phosphorus sequestering agent(s) used in the composition according to the invention are preferably chosen from:
- inorganic phosphorus derivatives preferably chosen from phosphates and pyrophosphates of alkali or alkaline-earth metals, preferably of alkali metals such as sodium pyrophosphate, potassium pyrophosphate, sodium pyrophosphate decahydrate; and polyphosphates of alkali or alkaline-earth metals, preferably of alkali metals, such as sodium hexametaphosphate, sodium polyphosphate, sodium tripolyphosphate, sodium trimetaphosphate; optionally hydrated, and mixtures thereof;
- organic phosphorus derivatives, such as organic (poly)phosphates and (poly)phosphonates, such as etidronic acid and/or its alkali or alkaline earth metal salts such as tetrasodium etidronate, disodium etidronate and mixtures thereof.

Preferably, the phosphorus sequestering agent(s) is (are) chosen from linear or cyclic compounds comprising at least two phosphorus atoms covalently linked together by at least one linker L comprising at least one oxygen atom and/or at least one carbon atom.

The phosphorus sequestering agent(s) may be chosen from inorganic phosphorus derivatives, preferably comprising at least 2 phosphorus atoms. More preferably, the phosphorus sequestering agent(s) is/are chosen from alkali or alkaline earth metal pyrophosphates, better still from alkali metal pyrophosphates, in particular sodium pyrophosphate (also called tetrasodium pyrophosphate).

The phosphorus sequestering agent(s) may be chosen from organic phosphorus derivatives, preferably comprising at least 2 phosphorus atoms. More preferably, the phosphorus sequestering agent(s) is/are chosen from etidronic acid (also called 1-hydroxyethane 1,1-diphosphonic acid) and/or its alkali metal or alkaline earth metal salts, preferably alkali metal salts such as tetrasodium etidronate and disodium etidronate.

Thus, preferably, the phosphorus sequestering agent(s) are chosen from alkali metal pyrophosphates, etidronic acid and/or its alkali metal salts, and a mixture of these compounds.

Particularly preferably, the phosphorus sequestering agent(s) are chosen from tetrasodium etidronate, disodium etidronate, etidronic acid, tetrasodium pyrophosphate and a mixture of these compounds.

According to the present invention, the sequestering agents are preferably chosen from diethylenetriamine pentaacetic acid (DTPA) and its salts, diethylenediamine tetraacetic acid (EDTA) and its salts, ethylenediamine disuccinic acid (EDDS) and its salts, etidronic acid and its salts, N,N-dicarboxymethyl glutamic acid and its salts (GLDA) and their mixtures.

More preferably, the sequestering agent(s) are chosen from N,N-dicarboxymethyl glutamic acid and its salts (GLDA) and their mixtures.

Among the salts of these compounds, the alkali metal salts are preferred, and in particular the sodium or potassium salts.

When the composition comprises one or more sequestrants, the total content of the sequestrant(s) preferably varies from 0.001 to 15% by weight, more preferably from 0.005 to 10% by weight, better still from 0.01 to 8% by weight, even better still from 0.05 to 5% by weight relative to the total weight of the composition.

Additives

The coloring process according to the invention uses a composition according to the invention which may contain any adjuvant or additive usually used.

Among the additives that may be contained in the composition according to the invention, mention may be made of reducing agents, thickening agents other than the anionic acrylic polymers as described above, softeners, anti-foaming agents, moisturizing agents, UV filters, peptizers, perfumes, anionic, cationic, amphoteric or zwitterionic surfactants, anionic polymers other than the anionic acrylic polymers as described above, cationic, non-ionic, amphoteric or mixtures thereof, anti-dandruff agents, antiseborrheic agents, vitamins and pro-vitamins including panthenol, sunscreens, plasticizing agents, solubilizing agents, acidifying agents, antioxidant agents, hydroxy acids, perfumes, and preservatives.

Of course, those skilled in the art will take care to choose this or these possible complementary compounds in such a way that the advantageous properties intrinsically attached to the composition according to the invention are not, or not substantially, altered by the addition(s) envisaged.

The above additives may generally be present in an amount for each of them between 0 and 20% by weight, relative to the total weight of the composition.

Preferably, the composition according to the invention is free of cationic polymer.

Preferably, the coloring process uses a composition further comprising one or more chemical oxidizing agents.

According to an advantageous embodiment, the coloring process comprises a step of mixing at least said composition (C1) as defined previously and at least one oxidizing composition (O) comprising one or more chemical oxidizing agents and a step of applying to said keratin fibers at least one ready-to-use composition resulting from the mixture of at least said composition (C1) and at least said oxidizing composition (O).

For the purposes of the present invention, the term “chemical oxidizing agent” means an oxidizing agent other than atmospheric oxygen.

The chemical oxidizing agent(s) (or bleaching agent(s)) that can be used in the present invention may be chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulfates, in particular sodium persulfate, potassium persulfate and ammonium persulfate, peracids and oxidase enzymes (with their possible cofactors) among which may be mentioned peroxidases, 2-electron oxidoreductases such as uricases and 4-electron oxygenases such as laccases, and mixtures thereof.

More preferably, the chemical oxidizing agent(s) is or are chosen from hydrogen peroxide, persalts, and mixtures thereof, more preferably hydrogen peroxide.

Preferably, the chemical oxidizing agent(s) is or are present in a total content ranging from 0.1 to 50%, more preferably from 0.5 to 20% by weight, even more preferably from 1 to 15% by weight, relative to the weight of the composition (C1) or the oxidizing composition (O).

According to a preferred embodiment, the chemical oxidizing agent(s) chosen from hydrogen peroxide, persalts, and their mixtures are present in a total content ranging from 0.1 to 50% by weight, more preferably from 0.5 to 20% by weight, even more preferably from 1 to 15% by weight, relative to the weight of the composition (C1) or the oxidizing composition (O).

The oxidizing composition (O) is preferably an aqueous composition.

In particular, the oxidizing composition (O) comprises more than 5% by weight of water, preferably more than 10% by weight of water, and even more advantageously more than 20% by weight of water.

It may also comprise one or more organic solvents chosen from those listed above; the latter representing more particularly, when present, from 1 to 40% by weight relative to the weight of the oxidizing composition, and preferably from 5 to 30% by weight

Preferably, the oxidizing composition (O) further preferably comprises one or more acidifying agents.

The oxidizing composition (O) is preferably aqueous and has a pH of less than 7.

According to one embodiment of the process, the composition can be used on dry or wet keratin fibers, preferably dry, as well as on all types of fibers, light or dark, natural or colored, permed, bleached or straightened.

According to a particular embodiment of the process of the invention, the fibers are washed before application of the composition described above.

The application of the composition of the invention to keratin fibers can be carried out by any conventional means, in particular by means of a comb, a brush, a brush, by hand or with the fingers.

The coloring process, i.e. application of the coloring composition to the keratin fibers, is generally carried out at room temperature (between 15 and 25°C).

Preferably, the composition according to the invention can be applied to the keratin fibers with a pause time of less than or equal to 20 minutes, more preferably less than or equal to 15 minutes, even more preferably ranging from 5 to 10 minutes.

Preferably, the composition according to the invention can be applied to the keratin fibers with a pause time of less than or equal to 15 minutes, even more preferably ranging from 5 to 10 minutes.

After applying the composition according to the invention, the keratin fibers can optionally be washed with shampoo and/or rinsed with water.

Preferably, the method is a method for coloring hair and/or eyebrows and/or beard, more preferably eyebrows and/or beard.

Advantageously, the coloring process is a process for coloring eyebrows and/or beards comprising the application to said fibers of at least the composition (C1) comprising at least one chemical oxidizing agent or of at least the ready-to-use composition resulting from the mixture of at least the composition (C1) and at least the oxidizing composition (O) as defined previously for a pause time of less than or equal to 20 minutes, preferably less than or equal to 15 minutes, more preferably varying from 5 to 10 minutes.

Multi-compartment device

The present invention also relates to a device for coloring said keratin fibers, in particular the hair and/or the eyebrows and/or the beard, preferably the eyebrows and/or the beard, comprising at least one compartment containing at least said composition (C1) according to the invention and at least one compartment containing at least one oxidizing composition (O), as defined previously, comprising one or more chemical oxidizing agents as defined previously.

The following examples serve to illustrate the invention without, however, being limiting in nature.

Examples

Example 1

In the following examples, all quantities are indicated as a percentage by mass of active ingredient (AI) relative to the total weight of the composition (unless otherwise stated).

Coloring compositions

Compositions A and B were prepared from the ingredients whose contents are indicated in the table below (% ma):

B
(INV) HAS
(COMP) E
(COMP) F
(COMP) G
(COMP) Ethanolamine 6.7 6.7 6.7 6.7 6.7 Lauric Acid 3.0 3.0 3.0 3.0 3.0 2-amino-3-hydroxypyridine 0.3 0.3 0.3 0.3 0.3 6-Hydroxyindole 0.1 0.1 0.1 0.1 0.1 Hydroxybenzomorpholine 0.9 0.9 0.9 0.9 0.9 Ascorbic acid 0.25 0.25 0.3 0.3 0.3 Tetrasodium glutamate diacetate 0.2 0.2 0.2 0.2 0.2 N,N-bis(2-hydroxyethyl)-p-
phenylenediamine sulfate 1.5 1.5 1.5 1.5 1.5 Propylene glycol 7.0 7.0 7.0 7.0 20 m-AMINOPHENOL 1.3 1.3 1.3 1.3 1.3 Glycol distearate 2.0 2.0 2.0 2.0 2.0 2,4-diaminophenoxyethanol HCl 0.77 0.77
0.8
0.8
0.8 Deceth-3 9.0 9.0 9.0 9.0 9.0 Cetearyl alcohol 11.5 11.5 11.5 11.5 11.5 Laureth-12 7.0 7.0 7.0 7.0 7.0 SILICA DIMETHYL SILYLATE 1.2 1.2 1.2 1.2 1.2 Oleth-30 4.0 4.0 4.0 4.0 4.0 Sodium metabisulfite 0.7 0.7 0.7 0.7 0.7 Carbomer 1.5 0.35 0.5 0.2 1.5 HYDROXYETHYL-3,4-METHYLENEDIOXYANILINE HCL 0.3 0.3
0.3
0.3
0.3 Toluene-2,5-diamine 2.0 2.0 2.0 2.0 2.0 Scent QS QS QS QS QS Water QS
100 QS
100 Qs
100 Qs
100 Qs
100

Stability of coloring compositions:

Stability after one month at room temperature:

Composition B according to the invention is a cream whose visual appearance does not change and has a stable viscosity.

• un déphasage de la composition A comparative et une diminution significative de la viscosité,
• un relargage des corps gras de la composition G comparative.

We note:

• a phase shift of the comparative composition A and a significant decrease in viscosity,
• a release of fatty substances from the comparative G composition.

Stability after one month at 4°C:

Composition B according to the invention is a cream whose visual appearance does not change and has a stable viscosity.

It is noted that composition F has a very sticky appearance accompanied by a significant drop in viscosity.

Comparative composition G is observed to have a wobbly, gelatinous and milky appearance with the deposition of a liquid layer at the bottom of the bottle as well as a trembling texture.

A significant decrease in the viscosity of comparative composition A is observed.

Stability after one month at 45°C:

Composition B according to the invention is a cream whose visual appearance does not change and has a stable viscosity.

It is observed that the comparative composition E has the appearance of a hard gel.

We observe the appearance of bubbles within the comparative composition A and a significant drop in viscosity.

It is observed that the comparative composition F has a fluttering, gelatinous and milky appearance with the deposition of a layer of liquid at the bottom of the bottle as well as a trembling texture.

Comparative composition G is observed to have a wobbly, gelatinous and milky appearance with the deposition of a liquid layer at the bottom of the bottle as well as a trembling texture.

Evaluation of the rheological properties of coloring compositions

The rheological properties of compositions B, A, E, F and G were evaluated by determining the yield point of each composition by a flow ramp test carried out using a Thermo Fisher RS600 imposed stress rotary rheometer (with the sandblasted C60/1° spindle) at a temperature of 33°C.

Measurement protocol

1. Chaque composition est laissée au repos pendant 2 minutes à une température de 33°C,
2. Mesure du seuil d’écoulement de chaque composition en appliquant une rampe de contrainte montante de 0,1 à 50 Pa en 30 secondes à une température de 33°C.

The flow threshold measurement is carried out according to the following protocol:

1. Each composition is left to stand for 2 minutes at a temperature of 33°C,
2. Measurement of the yield threshold of each composition by applying a rising stress ramp from 0.1 to 50 Pa in 30 seconds at a temperature of 33°C.

The determination of the flow threshold is carried out by the method of crossing the two tangents during the variation of the slope between the stable state (rest) and the beginning of the flow zone of the composition.

Conclusion

Composition B according to the invention has a flow threshold of 15.2 Pa at a temperature of 33°C, which means that it presents a zero risk of flow.

Comparative composition E has a flow threshold of 6 Pa at a temperature of 33°C, which means that it presents significant risks of dripping during its application.

Comparative composition A has a flow threshold of 2.6 Pa at a temperature of 33°C, which means that it presents significant risks of dripping during its application.

Comparative composition F has a flow threshold of 4.2 Pa at a temperature of 33°C, which means that it presents significant risks of dripping during its application.

Comparative composition G has a flow threshold of 9.9 Pa at a temperature of 33°C, which means that it presents low risks of dripping during its application.

Claims (14)

Process for dyeing keratin fibers, preferably human keratin fibers such as hair and/or eyebrows and/or beards, preferably eyebrows and/or beards, comprising at least the use of at least one composition (C1) comprising:
- one or more oxidation dyes,
- one or more alkaline agents,
- one or more anionic acrylic polymers,
- one or more polyols;
the weight ratio between the anionic acrylic polymer(s) and the polyol(s) being greater than or equal to 0.1. Method according to claim 1, characterized in that the oxidation dye(s) is or are chosen from oxidation bases, couplers, and mixtures thereof. Process according to the preceding claim, characterized in that the oxidation base(s) is or are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, their solvates and/or the solvates of their salts and their mixtures; more preferably from 2-methoxymethyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, and their addition salts, their solvates and/or the solvates of their salts and their mixtures. Composition according to any one of the preceding claims, characterized in that it is free from oxidation couplers chosen from resorcinol, 2-methyl resorcinol, 4-chloro resorcinol, their addition salts, their solvates, and the solvates of their salts. Process according to any one of the preceding claims, characterized in that the alkaline agent(s) is or are chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia, carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, silicates or metasilicates of alkali or alkaline earth metals such as sodium metasilicate and mixtures thereof, more preferably from ammonia and alkanolamines, better still from alkanolamines, better still the alkaline agent is monoethanolamine. Process according to any one of the preceding claims, characterized in that the anionic acrylic polymer(s) is or are chosen from those derived from at least one monomer of the following formula (II):

formula (II) in which,

• n represents an integer between 0 and 10 inclusive,
• A denotes a group –CH ₂ – or –CH ₂ =CH ₂ –,
• R ¹ denotes a hydrogen atom, a C ₁ -C ₆ alkyl, phenyl or benzyl group,
• R ² denotes a hydrogen atom, a C ₁ -C ₆ alkyl or carboxyl group,
• R ³ denotes a hydrogen atom, a C ₁ -C ₆ alkyl group, a –(CH ₂ ) _p -X, phenyl or benzyl group, with p being an integer between 1 and 6 inclusive and X representing a carboxylic (COOH), sulfonic (SO ₃ H), or phosphoric (PO ₄ H ₂ ) group,
• Z denotes a linear or branched alkylene group containing from 1 to 6 carbon atoms,
• R ⁴ denotes a hydroxyl group, a linear or branched C ₁ -C ₆ alkoxy, or a radical NH-ZR ⁵ , and
• R ⁵ denotes a carboxylic, sulfonic, or phosphoric group,

it being understood that the carboxylic, sulfonic or phosphoric acid groups may be partially or totally neutralized by an organic or mineral base or may be esterified by lower alcohols R-OH with R corresponding to a C alkyl group₁-C₆, linear or branched. Process according to the preceding claim, characterized in that n is 0 and R ¹ represents a hydrogen atom or a C ₁ -C ₄ alkyl radical, and R ² and R ³ represent a hydrogen atom or R ¹ , R ² and R ³ a C ₁ -C ₄ alkyl radical. Process according to any one of the preceding claims, characterized in that the anionic acrylic polymers are chosen from homopolymers or copolymers of acrylic or methacrylic acid and their salts, in particular crosslinked homopolymers of acrylic or methacrylic acid and their salts, and/or polyacrylamides comprising sulfonic groups, in particular homo- or copolymers of 2-acrylamido-2-methyl-propane sulfonic acid and their salts. Process according to any one of the preceding claims, characterized in that the polyol(s) is or are chosen from diglycerin, glycerin, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars such as glucose and mixtures thereof, preferably from glycerin, propane-1,3-diol, propylene glycol and mixtures thereof, better still the polyol is propylene glycol. Method according to any one of the preceding claims, characterized in that the composition (C1) further comprises one or more chemical oxidizing agents. Method according to any one of claims 1 to 9, characterized in that it comprises at least one step of mixing between the composition (C1), as defined according to any one of claims 1 to 9, and at least one oxidizing composition (O) comprising one or more chemical oxidizing agents, and at least one step of applying to said keratin fibers at least one ready-to-use composition resulting from the mixture of at least said composition (C1) and at least said oxidizing composition (O). Method according to claim 10 or 11, characterized in that the chemical oxidizing agent(s) is or are chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulfates, peracids and oxidase enzymes (with their possible cofactors), and mixtures thereof; preferably, the chemical oxidizing agent(s) is or are chosen from hydrogen peroxide, persalts, and mixtures thereof; more preferably the chemical oxidizing agent is hydrogen peroxide. Method according to any one of the preceding claims, characterized in that the application time on said keratin fibers of the composition (C1) as defined according to claim 10 or of the ready-to-use composition as defined according to claim 10 is less than 20 minutes, preferably varies from 5 to 10 minutes. Device for coloring keratin fibers, preferably human keratin fibers, such as hair and/or eyebrows and/or beard, preferably eyebrows and/or beard, comprising at least one compartment comprising at least one composition (C1), as defined according to any one of claims 1 to 10, and at least one compartment comprising at least one oxidizing composition (O) comprising one or more chemical oxidizing agents, preferably as defined according to claim 12.