A process for coloring keratin fibers with a composition comprising at least one dye, rinsing the keratin fibers, and then treating the resulting rinse solution with a specific system comprising a persulfate, an oxidizing agent other than persulfates, and an alkaline agent.

Abstract

The invention relates to a method for coloring keratin fibers, preferably human, more preferably hair, comprising applying to the keratin fibers a composition (A) comprising at least one dye, preferably selected from oxidation dyes, direct dyes, mixtures thereof and reaction products, rinsing the keratin fibers, and treating the rinsing solution with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.The invention also relates to a method for treating water comprising at least one dye, preferably chosen from oxidation dyes, direct dyes, mixtures thereof and reaction products, in which this water is brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

Description

Title of the invention: A method for coloring keratin fibers with a composition comprising at least one dye, rinsing the keratin fibers, and then treating the resulting rinsing solution with a particular system comprising a persulfate, an oxidizing agent other than persulfates, and an alkaline agent.

[0001] The invention relates to a process for coloring keratin fibers, preferably human, more preferably hair, comprising applying to the keratin fibers, preferably human, more preferably hair, a composition (A) comprising at least one dye, preferably selected from oxidation dyes, direct dyes, their mixtures and their reaction products, rinsing the keratin fibers, preferably human, more preferably hair, and treating the solution from the rinsing with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

[0002] The invention also relates to a method for treating water comprising at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products, in which this water is brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

[0003] The invention finally relates to the use of at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent as defined hereafter for the degradation of dyes, preferably chosen from oxidation dyes, direct dyes, their mixtures and their reaction products present in an aqueous solution comprising at least 80% water.

[0004] Two main modes of coloring of human keratin fibers, and in particular of hair, are known.

[0005] One of these two methods is oxidation or permanent coloring. This coloring method uses one or more oxidation dye precursors, usually one or more oxidation bases possibly associated with one or more couplers.

[0006] In general, oxidation bases are chosen from among ortho- or para-phenylenediamines, ortho- or para-aminophenols, and heterocyclic compounds. These oxidation bases are colorless or weakly colored compounds. colored which, combined with oxidizing products, allow access to colored species.

[0007] Often, the nuances obtained with these oxidation bases are varied by associating them with one or more couplers, the latter being chosen in particular from among the aromatic meta-diamines, the meta-aminophenols, the meta-diphenols and certain heterocyclic compounds, such as indolic compounds.

[0008] The second coloring method, called direct or semi-permanent coloring, involves the application of direct dyes, which are molecules with an affinity for fibers and which remain colored even in the absence of an oxidizing agent added to the compositions containing them. Given the nature of the molecules used, these remain mostly on the surface of the fiber and penetrate relatively little into the fiber, compared to the small precursor molecules of oxidation dyes.

[0009] The direct dyes generally used are chosen from among benzene, anthraquinone, nitropyridine, azo, methicillin, azomethine, xanthenic, acridinic, azinic, or triarylmethanic direct dyes. The chemical species used may be nonionic, anionic (acid dyes), or cationic (basic dyes). The direct dyes may also be natural dyes.

[0010] Compositions containing one or more direct dyes are applied to the keratin fibers for a time necessary to obtain the desired color, then rinsed.

[0011] The formulation of environmentally friendly cosmetic products, that is to say whose design, development and use take into account environmental issues, is becoming a major concern to help meet planetary challenges.

[0012] Since hair coloring products are rinsed, it is therefore essential to offer more sustainable compositions and / or coloring processes that address these environmental challenges.

[0013] In this context, it is important to develop coloring processes capable of reducing the presence of dyes in the environment, and in particular in water from rinsing.

[0014] There is therefore a real need to develop a process for coloring keratin fibers which makes it possible to reduce the amount of residual dyes in the water from rinsing without altering the colors obtained.

[0015] We have developed a water treatment system for water containing dyes or their reaction products. This system allows for the in-situ degradation of these dyes, based on an Advanced Oxidation Process (AOP). which consists of the formation of free radicals, here thanks to the addition of a particular reactive system in the medium to be treated.

[0016] The process according to the invention therefore makes it possible to significantly reduce the quantity of residual dyes in the water from rinsing keratin fibers, preferably human, more preferably hair at the end of the coloring process.

[0017] It also allows the treatment of water from rinsing collected during a process of coloring keratin fibers, preferably human, more preferably hair.

[0018] By treatment we mean oxidizing the dyes and their reaction products into environmentally friendly molecules, or even going so far as to mineralize them.

[0019] Other objects, features, aspects and advantages of the invention will become even clearer upon reading the description and examples that follow.

[0020] In what follows, and unless otherwise indicated, the bounds of a range of values ​​are included in that range, in particular in the expressions "between" and "ranging from ... to ...".

[0021] Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0022] A method for coloring keratin fibers, preferably human, more preferably hair

[0023] The goals mentioned in the introduction and others are achieved by the present invention, which therefore relates to a process for coloring keratin fibers, preferably human, more preferably hair, comprising the following steps: a) application to keratin fibers, preferably human, more preferably hair, of a composition (A) comprising at least one dye, preferably chosen from oxidation dyes, direct dyes, their mixtures and their reaction products; b) rinsing of keratin fibers, preferably human, more preferably hair, preferably with water; c) treatment of the solution obtained from rinsing keratin fibers, preferably human, more preferably hair, with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

[0024] The coloring process according to the invention uses a coloring composition (A).

[0025] According to a preferred embodiment, the composition (A) implemented in the process according to the invention is a composition for coloring keratin fibers, in particular hair. Composition (A) Dye

[0026] The composition (A) implemented in the process according to the invention comprises at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products.

[0027] These direct colorants can be synthetic or natural.

[0028] By "direct dye," we mean colored species. These are dyes that will diffuse superficially onto the fiber.

[0029] These synthetic direct dyes are chosen for example from those classically used in direct dyeing, and among which we can mention all the aromatic and / or non-aromatic dyes in common use such as benzene, azo, hydrazono, (hetero)aryl, tri(hetero)arylmethane, (poly)methinic, carbonyl, azinic, porphyrinic, metalloporphyrinic, quinonic and in particular anthraquinonic, indoamine, phthalocyanic and their mixtures.

[0030] Among the benzene nitro direct dyes, the following may be mentioned: 1,4-diamino-2-nitrobenzene; 1-amino-2-nitro-4-B-hydroxyethylaminobenzene; 1-amino-2-nitro-4-bis(B-hydroxyethyl)-aminobenzene; 1,4-bis(B-hydroxyethylamino)-2-nitrobenzene; 1B-hydroxyethylamino-2-nitro-4-bis-(B-hydroxyethylamino)-benzene; 1-B-hydroxyethylamino-2-nitro-4-aminobenzene; 1-B-hydroxyethylamino-2-nitro-4-(ethyl)(B-hydroxyethyl)-aminobenzene; 1-amino-3-methyl-4-B-hydroxyethylamino-6-nitrobenzene; 1-amino-2-nitro-4-B-hydroxyethylamino-5-chlorobenzene; 1,2-diamino-4-nitrobenzene; l-amino-2-b-hydroxyethylamino-5-nitrobenzene; 1,2-bis-(b-hydroxyethylamino)-4-nitrobenzene; l-amino-2-tris-(hydroxymethyl)-methylamino-5-nitrobenzene; l-Hydroxy-2-amino-5-nitrobenzene; l-Hydroxy-2-amino-4-nitrobenzene; l-Hydroxy-3-nitro-4-aminobenzene; l-Hydroxy-2-amino-4,6-dinitrobenzene; lb-hydroxyethyloxy-2-b-hydroxyethylamino-5-nitrobenzene; l-Methoxy-2-b-hydroxyethylamino-5-nitrobenzene;1b-hydroxyethyloxy-3-methylamino-4-nitrobenzene; 1-β,γ-dihydroxypropyloxy-3-methylamino-4-nitrobenzene; 1b-hydroxyethylamino-4-β,γ-dihydroxypropyloxy-2-nitrobenzene; 1-β,γ-dihydroxypropylamino-4-trifluoromethyl-2-nitrobenzene; 1-β-hydroxyethylamino-4-trifluoromethyl-2-nitrobenzene; 1b-hydroxyethylamino-3-methyl-2-nitrobenzene; 1b-aminoethylamino-5-methoxy-2-nitrobenzene; 1-Hydroxy-2-chloro-6-ethylamino-4-nitrobenzene; 1-Hydroxy-2-chloro-6-amino-4-nitrobenzene; 1-Hydroxy-6-bis-(β-hydroxyethyl)-amino-3-nitrobenzene; 1b-hydroxyethylamino-2-nitrobenzene; 1-Hydroxy-4-b-hydroxyethylamino-3-nitrobenzene. ;

[0031] Among the azo direct dyes, we can cite: Basic Red 51, Basic Orange 31, Disperse Red 17, Acid Yellow 9, Acid Black 1, Basic Red 22, Basic Red 76, Basic Yellow 57, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 35, Acid Yellow 23, Acid Orange 24, Disperse Black 9, Basic Brown 16, Basic Brown 17.

[0032] Among the direct hydrazono colorants, we can mention: Basic Yellow 87.

[0033] Among the aryl nitrate direct dyes, the following may be mentioned: HC Blue 2, HC Yellow 2, HC Red 3, 4-hydroxypropylamino-3-nitrophenol, A,A'-bis-(2-hydroxyethyl)-2-nitro-pheny lenediamine. Among the triarylmethane direct dyes, we can cite: Basic Violet 1, Basic Violet 2, Basic Violet 3, Basic Violet 4, Basic Violet 14, Basic Blue 1, Basic Blue 7, Basic Blue 26, Basic green 1, Basic Blue 77 (also called HC Blue 15), Acid Blue 1; Acid Blue 3; Acid Blue 7, Acid Blue 9; Acid Violet 49; Acid green 3; Acid green 5; Acid Green 50.

[0035] Among the quinone direct dyes, the following may be mentioned: Disperse Red 15, Solvent Violet 13, Acid Violet 43, Disperse Violet 1, Disperse Violet 4, Disperse Blue 1, Disperse Violet 8, Disperse Blue 3, Disperse Red 11, Acid Blue 62, Disperse Blue 7, Basic Blue 22, Disperse Violet 15, Basic Blue 99, as well as the following compounds: 1-N-methylmorpholiniumpropylamino-4-hydroxyanthraquinone, 1-aminopropylamino-4-methylaminoanthraquinone, 1-aminopropylamino-anthraquinone, 5-β-hydroxyethyl-1,4-diaminoanthraquinone, 2-aminoethylamino-anthraquinone, 1,4-bis-(β,γ-dihydroxypropylamino)-anthraquinone, Acid Blue 25, Acid Blue 43, Acid Blue 78, Acid Blue 129, Acid Blue 138, Acid Blue 140, Acid Blue 251, Acid Green 25, Acid Green 41, Acid Violet 42, Mordant Red 3, Acid Black 48, HC Blue 16.

[0036] Among the direct azinic dyes, we can mention: Basic Blue 17, Basic Red 2.

[0037] Among the direct indamine dyes, we can mention: 2-b-hydroxyethylamino- 5-[bis-(b-4'-hydroxyethyl)amino]anilino-l,4-benzoquinone, 2-b-hydroxyethylamino-5-(2'-methoxy-4'-amino)anilino-l,4-benzoquinone, 3-N(2'-chloro-4'-hydroxy)phenyl-acetylamino-6-methoxy-l,4-benzoquinone imine, 3-N(3'-chloro-4'-methylamino)phenyl-ureido-6-methyl-1,4-benzoquinone imine, 3-[4'-N-(ethyl,carbamylmethyl)-amino]-phenyl-ureido-6-methyl-1,4-benzoquinone imine.

[0038] Natural direct dyes are for example chosen from lawsone, juglone, indigo, leuco indigo, indirubine, isatin, hennotannic acid, alizarin, carthamine, morine, purpurine, carminic acid, kermesic acid, laccaic acid, purpurogallin, protocatechaldehyde, curcumin, spinulosin, apigenidine, orceins, carotenoids, betanin, chlorophylls, chlorophyllins, monascus, polyphenols or orthodiphenols.

[0039] Among the useful orthodiphenols according to the invention, the following may be mentioned: catechin, quercetin, brazilin, hematein, hematoxylin, chlorogenic acid, caffeic acid, gallic acid, L-DOPA, cyanidin, (-)-Epicatechin, (-)-Epigallocatechin, (-)-Epigallocatechin 3-gallate (EGCG), Isoquercetin, Pomiferin, esculetin, 6,7-Dihydroxy-3-(3-hydroxy-2,4-dimethoxyphenyl)coumarin, Santalin A and B, mangiferin, butein, Maritimetin, Sulfurtin, Robtein, betanidine, Pericampylinone A., Theaflavin, Proanthocyanidin A2, Proanthocyanidin B2, Proanthocyanidin Cl, Procyanidins DP 4-8, Tannic acid, Purpurogallin, 5,6-Dihydroxy-2-methyl-1,4-naphthoquinone, Alizarin, Wedelolactone and the natural extracts containing them.

[0040] When composition (A) includes at least one direct colorant, preferably, they are present in a total content of 0.001 to 20% by weight, preferably 0.005 to 15% by weight, more preferably 0.01 to 10% by weight, better 0.05 to 5%, even better 0.1 to 3% by weight, relative to the weight of composition (A).

[0041] Preferably, the composition (A) implemented in the process according to the invention comprises one or more dyes chosen from oxidation dyes.

[0042] Oxidation dyes can be chosen from one or more oxidation bases, optionally associated with one or more couplers.

[0043] Preferably, the oxidation dye(s) comprise one or more oxidation bases.

[0044] Preferably, the composition (A) implemented in the process according to the invention comprises one or more oxidation bases.

[0045] Oxidation bases may be present in the form of salts, solvates and / or solvates of salts.

[0046] The addition salts of the oxidation bases present in the composition (A) are in particular selected 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, potassium, ammonia, amines or alkanolamines.

[0047] 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 C1 to C4 alcohol such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

[0048] By way of example, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and corresponding addition salts, solvates and / or solvates of salts.

[0049] Among the para-phenylenediamines that can be mentioned, examples 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([3-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis(P-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(B-hydroxyethyl)amino-2-chloroaniline, 2-[3-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-([3-hydroxypropyl)-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N-ethyl-N-([3-hydroxyethyl)-para-phenylenediamine, N-([3,γ-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-[3-hydroxyethyloxy-para-phenylenediamine, 2-[3-acetylaminoethyloxy-para-phenylenediamine, N-([3-methoxyethyl)-para-phenylenediamine,4-Aminophenylpyrrolidine, 2-Thienyl-para-phenylenediamine, 2-[>-Hydroxyethylamino-5-aminotoluene and 3-Hydroxy-l-(4'-Aminophenyl)pyrrolidine and their addition salts, solvates and / or solvates of their salts.

[0050] Among the aforementioned para-phenylenediamines, para-phenylenediamine, para-toluenediamine, 2-isopropyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-[>-hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, N,N-bis([3-hydroxyethyl)-para-phenylenediamine, 2-chloro-para-phenylenediamine and 2-P-acetylaminoethyloxy-para-phenylenediamine and the corresponding addition salts, solvates and / or solvates of their salts.

[0051] Among the bis(phenyl)alkylenediamines that can be mentioned, examples include N,N'-bis([3-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N,N'-bis([3-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis([3-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 addition salts corresponding, the solvates and solvates of the salts.

[0052] Among the para-aminophenols mentioned, examples 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-(P-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol and addition salts, solvates and solvates of salts.

[0053] Among the ortho-aminophenols that can be mentioned, we find 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.

[0054] Among the heterocyclic bases that can be mentioned, we find for example the derivatives of pyridine, pyrimidine and pyrazole.

[0055] Among the pyridine derivatives that can be mentioned are the compounds for example described in patents 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.

[0056] Other pyridine oxidation bases that are useful in the present invention are the 3-aminopyrazolo[l,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in French patent application FR 2 801 308. Examples that may be mentioned include pyrazolo[l,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[l,5-a]pyrid-3-ylamine, 2-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, 3-aminopyrazolo[l,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[l,5-a]pyrid-3-ylamine, (3-aminopyrazolo[l,5-a]pyrid-7-yl)methanol, 2-(3-aminopyrazolo[l,5-a]pyrid-5-yl)ethanol, 2-(3-aminopyrazolo[l,5-a]pyrid-7-yl)ethanol, (3-aminopyrazolo[l,5-a]pyrid-2-yl)methanol, 3,6-diaminopyrazolo[l,5-a]pyridine, 3,4-diaminopyrazolo[l,5-a]pyridine, pyrazolo[l,5-a]pyridine-3,7-diamine, 7-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, pyrazolo[l,5-a]pyridine-3,5-diamine, 5-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine,2-[(3-aminopyrazolo[l,5-a]pyrid-5-yl)(2-hydroxyethyl)-amino]ethanol, 2-[(3-aminopyrazolo[l,5-a]pyrid-7-yl) (2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[l,5-a]pyridin-5-ol, 3-aminopyrazolo[l,5-a]pyridin-4-ol, 3-aminopyrazolo[l,5-a]pyridin-6-ol, 3-aminopyrazolo[1,5-a]pyridin-7-ol, 2-[3-hydroxyethoxy-3-amino-pyrazolo[1,5-a]pyridine; 2-(4-dimethylpiperazinium-l-yl)-3-amino-pyrazolo[l,5-a]pyridine; and the corresponding addition salts, the solvates and solvates of the salts.

[0057] More particularly, the oxidation bases that are useful in the present invention are chosen from among the 3 aminopyrazolo-[1,5 a]-pyridines and preferably substituted at carbon atom 2 by: a) a (di)(Cl-C6)(alkyl)amino group, said alkyl group being able to be substituted by at least one hydroxy, amino, imidazolium group; b) a heterocycloalkyl group containing 5 to 7 members and 1 to 3 heteroatoms, possibly cationic, possibly substituted by one or more (Cl-C6)alkyl groups, such as a di(Cl-C4)alkylpiperazinium group; or c) a (Cl-C6)alkoxy group possibly substituted by one or more hydroxy groups such as a [3-hydroxyalkoxy] group and the corresponding addition salts, solvates and solvates of the salts.

[0058] 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-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and their addition salts, the solvates and solvates of the salts and their tautomeric forms, where a tautomeric equilibrium exists.

[0059] Among the pyrazole derivatives that can 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-l-methylpyrazole, 4,5-diamino-l-([3-hydroxyethyl)pyrazole, 3,4-diaminopyrazole, 4,5-diamino-l-(4'-chlorobenzyl)pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-l-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, the 4-amino-l,3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-l-methylpyrazole, 4,5-diamino-l-tert-butyl-3-methylpyrazole, 4,5-diamino-l-([3-hydroxyethyl)-3-methylpyrazole, 4,5-diamino-l-ethyl-3-methylpyrazole, 4,5-diamino-l-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-l-ethyl-3-hydroxymethyl-pyrazole, 4,5-diamino-3-hydroxymethyl-l-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole, 4,5-Diamino-3-methyl-l-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-l,3-dimethylpyrazole, 3,4,5-triaminopyrazole, l-methyl-3,4,5-triaminopyrazole, 3,5-diamino-l-methyl-4-methylaminopyrazole, 3,5-diamino-4-([3-hydroxyethyl)amino-l-methylpyrazole and the corresponding addition salts, solvates and / or solvates of the salts. 4,5-diamino-l-([3-methoxyethyl)pyrazole may also be used.

[0060] A 4,5-diaminopyrazole will preferably be used and even more preferably 4,5-diamino-l-([3-hydroxyethyl)pyrazole and / or a corresponding salt, solvated and / or salt solvated.

[0061] Pyrazole derivatives that 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[l,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[l,2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-l-yl)-6,7-dihydro-lH,5H-pyrazolo[l,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-lH,5H-pyrazolo[l,2-a]pyrazol-1-one, 2-amino-3-dimethylamino-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazino[l,2-a]pyrazol-l-one, 4-amino-1,2-diethyl-5-(pyrrolidin-l-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-lH,5H-pyrazolo[l,2-a]pyrazol-l-one their salts, their solvates and / or solvates of their salts.

[0062] Preferably, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and / or a corresponding salt, solvated and / or salt-solvated, will be used.

[0063] Preferably, 4,5-diamino-l-([3-hydroxyethyl)pyrazole and / or 2,3-diamino-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one and / or 2-[3-hydroxyethoxy-3-amino-pyrazolo[l,5-a]pyridine and / or a corresponding salt, solvated and / or salt-solvated, will be used as heterocyclic bases.

[0064] 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.

[0065] When composition (A) comprises at least one oxidation base, preferably the oxidation base(s) is / are present in a total content of 0.001 to 20% by weight, preferably 0.005 to 15% by weight, more preferably 0.01 to 10% by weight, better 0.05 to 5%, even better 0.1 to 3% by weight, relative to the total weight of composition (A).

[0066] The oxidation dye(s) can also be chosen from one or more couplers, which can be chosen from the couplers conventionally used for staining keratin fibers.

[0067] Preferably, the composition (A) implemented in the process according to the invention comprises one or more couplers.

[0068] Among the useful couplers according to the invention, we can in particular mention 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.

[0069] Examples include 6-hydroxybenzomorpholine, hydroxyethyl-3,4-methylenedioxyaniline, 2-amino 5-ethylphenol, 1,3-dihydroxybenzene, l,3-dihydroxy-2-methylbenzene, 4-chloro-l,3-dihydroxybenzene, 2,4-diamino-l-(β-hydroxyethyloxy)benzene, 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, l,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-l-dimethylaminobenzene, sesamol, α-naphtol, 2-methyl-l-naphtol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 3,5-diamino-2,6-dimethoxypyridine, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, the 2,6-dihydroxy-4-methylpyridine, 1H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2,6-dimethylpyrazolo[l,5-b]-l,2,4-triazole, 2,6-dimethyl[3,2-c]-l,2,4-triazole and 6-methylpyrazolo[l,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(B-hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 3-amino-2-chloro-6-methylphenol, the corresponding addition salts, solvates, solvates of the salts and the corresponding mixtures.

[0070] In general, the addition salts of the couplers that 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.

[0071] Furthermore, the solvates more particularly represent the hydrates of these couplers and / or the association of these couplers with a linear or branched alcohol in the C4 to C5 groups such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

[0072] When composition (A) includes one or more oxidation couplers, the total content of the coupler(s) present in composition (A) varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of composition (A).

[0073] Preferably, the total content of the colorants varies preferably from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (A).

[0074] When present, the total content of oxidation dyes varies preferably from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (A). Alkaline agent

[0075] The composition (A) implemented in the process according to the invention may, in addition, comprise at least one alkaline agent.

[0076] The useful alkaline agents according to the invention can be mineral, organic or hybrid alkaline agents.

[0077] For the purposes of the present invention, the terms "alkaline agent" and "alkalinizing agents" are used interchangeably.

[0078] The mineral alkalizing agent(s) are preferably chosen from ammonium hydroxide, ammonium carbonates or bicarbonates or alkali or alkaline-earth metals 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.

[0079] 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.

[0080] By alkanolamine is meant an organic amine comprising a primary, secondary or tertiary amine function, and one or more alkyl groups, linear or branched, in CrC8 bearing one or more hydroxyl radicals.

[0081] Organic amines selected from among alkanolamines such as mono-, di- or tri-alkanolamines, comprising one to three hydroxyalkyl radicals, identical or not, in C1-C4, are particularly suitable for carrying out the invention.

[0082] In particular, the alkanolamine(s) are chosen from monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-l-propanol, triisopropanolamine, 2-amino-2-methyl-l,3-propanediol, 3-amino-l,2-propanediol, 3-dimethylamino-l,2-propanediol, tris-hydroxymethylamino-methane and mixtures thereof.

[0083] Advantageously, the amino acids are basic amino acids comprising an additional amine function. Such basic amino acids are preferably chosen from histidine, lysine, arginine, omithine, and citrulline.

[0084] The organic amine can also be chosen from among heterocyclic organic amines. In particular, in addition to histidine already mentioned among amino acids, pyridine, piperidine, imidazole, triazole, tetrazole, and benzimidazole can be cited. The organic amine can also be chosen from amino acid dipeptides. Carnosine, anserine, and balenine are examples of amino acid dipeptides that can be used in the present invention. The amine The organic compound can also be chosen from compounds containing a guanidine function. Examples of such amines other than arginine that can be used in the present invention include 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).

[0085] In particular, guanidine carbonate or monoethanolamine hydrochloride can be used as hybrid compounds.

[0086] The useful alkali agent(s) according to the invention is / are preferably chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonium hydroxide, carbonates or bicarbonates such as ammonium (hydrogen)carbonate, sodium (hydrogen)carbonate and potassium (hydrogen)carbonates, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate and mixtures thereof, more preferably from alkanolamines and ammonium hydroxide, better from alkanolamines, even better, monoethanolamine.

[0087] In a particular embodiment, the composition (A) implemented in the process according to the invention is free of ammonium hydroxide.

[0088] The total content of the alkali agent(s) varies, when present, preferably from 0.1 to 40% by weight, more preferably from 1 to 30% by weight, better from 2 to 25% by weight, even better from 4 to 20% by weight relative to the total weight of the composition (A).

[0089] According to a particular embodiment, the total alkanolamine content, preferably monoethanolamine, varies preferably from 0.1 to 40% by weight, more preferably from 1 to 30% by weight, better from 2 to 25% by weight, even better from 4 to 20% by weight, or even from 8 to 15% by weight relative to the total weight of the composition (A).

[0090] According to one embodiment, the pH of the composition (A) used in the process according to the invention is between 8 and 13; preferably between 9.0 and 12.

[0091] The pH of the composition can be adjusted to the desired value by means of acidic or alkaline agent(s) commonly used in dyeing keratin fibers such as those described above, or by means of buffer systems known to those skilled in the art. Sequestrators

[0092] The composition (A) implemented in the process according to the invention may, in addition, include at least one sequestering (or chelating) agent.

[0093] Preferably, the composition (A) implemented in the process according to the invention comprises one or more sequestering agent(s).

[0094] 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, that is, it forms one or more bonds with the metal ion (forming a ring including the metal ion).

[0095] A sequestering (or chelating) agent generally comprises at least two electron-donating atoms that allow the formation of bonds with the metal ion.

[0096] Within the framework 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.

[0097] The salts include, in particular, salts of alkali metals, alkaline earth metals, ammonium and substituted ammonium.

[0098] 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), the 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 documents 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-based chelating agents (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 Akzo's Dissolvine GL38 or 45S Nobel.

[0099] 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-l-hydroxy-l,l-triphosphonic acid (EHDP), ethane-l,l,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

[0100] Examples of polyphosphoric acid-based chelating agents include the following compounds: sodium tripolyphosphate (STP), tetrasodium diphosphate, hexametaphophoric acid, sodium metaphosphate, phytic acid.

[0101] According to one embodiment, the useful sequestering agent(s) according to the invention are phosphorus-based sequestering agents, that is to say, sequestering agents which comprise one or more phosphorus atoms, preferably at least two phosphorus atoms.

[0102] The phosphorus-containing sequestering agent(s) used in the composition (A) implemented in the process according to the invention are preferably chosen from: - inorganic phosphorus derivatives preferably selected 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; possibly hydrated, and mixtures thereof; - organic phosphorus derivatives, such as organic (poly)phosphates and (poly)phosphonates, like etidronic acid and / or its alkali or alkaline earth metal salts such as tetrasodium etidronate, disodium etidronate and their mixtures.

[0103] Preferably, the phosphorus-containing 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.

[0104] The phosphorus-containing sequestering agent(s) may be selected from inorganic phosphorus derivatives, preferably comprising at least 2 phosphorus atoms. More preferably, the phosphorus-containing sequestering agent(s) is / are selected from alkali or alkaline earth metal pyrophosphates, preferably from alkali metal pyrophosphates, in particular sodium pyrophosphate (also called tetrasodium pyrophosphate).

[0105] The phosphorus-containing sequestering agent(s) may be selected from organic phosphorus derivatives, preferably comprising at least 2 phosphorus atoms. More preferably, the phosphorus-containing sequestering agent(s) is / are selected from etidronic acid (also called 1,1-hydroxyethane acid). diphosphonic) and / or its alkali or alkaline-earth metal salts, preferably alkali metals such as tetrasodium etidronate and disodium etidronate.

[0106] Thus, preferably, the phosphorus-containing sequestering agent(s) are chosen from alkali metal pyrophosphates, etidronic acid and / or its alkali metal salts, and a mixture of these compounds.

[0107] In a particularly preferred manner, the phosphorus-containing sequestering agent(s) are selected from tetrasodium etidronate, disodium etidronate, etidronic acid, tetrasodium pyrophosphate and a mixture of these compounds.

[0108] 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 mixtures thereof.

[0109] More preferably, the sequestering agent(s) are chosen from N,N-dicarboxymethyl glutamic acid and its salts (GLDA) and mixtures thereof.

[0110] Among the salts of these compounds, alkali metal salts are preferred, and in particular sodium or potassium salts.

[0111] When composition (A) comprises one or more sequestering agents, the total content of the sequestering agent(s) preferably varies from 0.001 to 15% by weight, more preferably from 0.005 to 10% by weight, better from 0.01 to 8% by weight, and even better from 0.05 to 5% by weight relative to the total weight of composition (A). Surfactants

[0112] The composition (A) implemented in the process according to the invention may further comprise one or more surfactant(s).

[0113] Preferably, the composition (A) implemented in the process according to the invention comprises one or more surfactant(s). The surfactants may be chosen from anionic surfactants, amphoteric surfactants, cationic surfactants, nonionic surfactants and mixtures thereof.

[0114] Preferably, the composition (A) comprises one or more anionic surfactant(s).

[0115] Anionic surfactants are non-siliconized.

[0116] Anionic surfactant is understood to be a surfactant comprising only anionic groups as ionic or ionizable groups.

[0117] In the present description, an entity is qualified as "anionic" when it has at least one permanent negative charge or when it can be ionized into a negatively charged entity, under the conditions of use of the composition of the invention (medium, pH for example) and not comprising a cationic charge.

[0118] Anionic surfactants can be sulfate, sulfonate and / or carboxylic (or carboxylate) surfactants. A mixture of these surfactants can obviously be used.

[0119] It is understood in this description that: - Anionic carboxylate surfactants include at least one carboxylic or carboxylate function (-COOH or -COO), and may optionally include in addition one or more sulfate and / or sulfonate functions; - Anionic sulfonate surfactants comprise at least one sulfonate function (-SO3H or -SO3), and may optionally also comprise one or more sulfate functions, but do not comprise a carboxylate function; and - Anionic sulfate surfactants include at least one sulfate function but do not include a carboxylate or sulfonate function.

[0120] The anionic carboxylic surfactants that can be used therefore include at least one carboxylic or carboxylate function (-COOH or -COO). They may be chosen from the following compounds: acylglycinates, acyllactylates, acylsarcosinates, acylglutamates; alkylethercarboxylic acids, C6-30 alkyl(aryl)ethercarboxylic acids, alkyl-D-galactoside-uronic acids, alkylamidoethercarboxylic acids; as well as the salts of these compounds; the alkyl and / or acyl groups of these compounds having from 6 to 30 carbon atoms, in particular from 12 to 28, even better from 14 to 24, or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds may be polyoxyalkylated, in particular polyoxyethylated and then preferably having from 1 to 50 ethylene oxide motifs, better from 2 to 10 ethylene oxide motifs. C6-C24 alkyl monoesters and polyglycoside-polycarboxylic acids such as C6-C24 alkyl polyglycoside citrates, C6-C24 alkyl polyglycoside tartrates and C6-C24 alkyl polyglycoside sulfosuccinates, and their salts, can also be used.

[0121] Among the carboxylic surfactants above, special mention may be made of polyoxyalkylened alkyl(amido)ether carboxylic acids and their salts, in particular those comprising 2 to 50 alkylene oxide groups, in particular ethylene, such as the compounds offered by the company KAO under the names AKYPO.

[0122] The polyoxyalkylened alkyl(amido)ether carboxylic acids that may be used are preferably chosen from those of formula (1): R!-(OC2H4)n-OCH2COOA (1) in which: - Rr represents a linear or branched C6-C24 alkyl or alkenyl radical, an alkyl(C8-C9)phenyl radical, an R2 CONH-CH2-CH2- radical with R2 denoting a linear or branched C9-C21 alkyl or alkenyl radical; preferably Rr is a C8-C20 alkyl radical, preferably a C8-C18 alkyl radical; - n' is an integer or decimal number (average value) ranging from 2 to 24, preferably from 2 to 10, - A denotes H, ammonium, Na, K, Li, Mg or a monoethanolamine or triethanolamine residue.

[0123] Preferably, the carboxylic anionic surfactants are selected from, alone or in mixtures: - acylglutamates, particularly in C6-C24, or even in C12-C20, such as stearoylglutamates, and in particular disodium stearoylglutamate; - acylsarcosinates, particularly in C6-C24, or even in C12-C20, such as palmitoylsarcosinates, and in particular sodium palmitoylsarcosinate; - acyllactylates, particularly in C12-C28, or even in C14-C24, such as behenoyllactylates, and in particular sodium behenoyllactylate; - C6-C24 acylglycinates, particularly C12-C20; - alkyl(C6-C24)ethercarboxylates, and in particular alkyl(C12-C20)ethercarboxylates; especially those containing 2 to 50 ethylene oxide groups; - polyoxyalkylened alkyl(C6-C24)amidoether carboxylic acids, in particular those containing 2 to 50 ethylene oxide groups; in particular in acidic form or as salts of alkali or alkaline earth metals, ammonium or amino alcohol.

[0124] The anionic sulfonate surfactants that may be used comprise at least one sulfonate function (-SO3H or -SO3). They may be selected from the following compounds: alkylsulfonates, alkylethersulfonates, alkylamidesulfonates, alkylarylsulfonates, alpha-olefinsulfonates, paraffinsulfonates, alkylsulfosuccinates, alkylethersulfosuccinates, alkylamidesulfosuccinates, alkylsulfoacetates, N-acyltaurates, acylisethionates; alkylsulfolaurates; as well as the salts of these compounds; the alkyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, even better from 14 to 24, or even from 16 to 22, carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds can be polyoxyalkylated, in particular polyoxyethylated and then preferably comprising from 1 to 50 ethylene oxide motifs, better from 2 to 10 ethylene oxide motifs.

[0125] Preferably, the anionic sulfonate surfactants are selected from, alone or in mixtures: - C6-C24 olefinsulfonates, particularly C12-C20, - C6-C24 alkylsulfosuccinates, especially C12-C20 alkylsulfosuccinates, particularly laurylsulfosuccinates. - C6-C24 alkyl ether sulfosuccinates, particularly C12-C20; - (C6-C24)acylisethionates, preferably (C12-C18)acylisethionates, particularly in the form of alkali or alkaline earth metal salts, ammonium, or amino alcohol.

[0126] The anionic sulfate surfactants that may be used have at least one sulfate function (-OSO3H or -OSO3). They can be chosen from the following compounds: alkyl sulfates, alkyl ethers sulfates, alkylamido ethers sulfates, alkylaryl polyether sulfates, monoglycerides sulfates; as well as salts of these compounds; the alkyl groups of these compounds having from 6 to 30 carbon atoms, in particular from 12 to 28, even better from 14 to 24, or even from 16 to 22, carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds can be polyoxyalkylated, in particular polyoxyethylated and then preferably comprising from 1 to 50 ethylene oxide motifs, better from 2 to 10 ethylene oxide motifs.

[0127] Preferably, the anionic sulfate surfactants are selected from, alone or in mixtures: - alkyl sulfates, particularly C6-C24, and even C12-C20, and

[0128] - alkyl ether sulfates, particularly in C6-C24, or even C12-C20, comprising preference of 1 to 20 ethylene oxide patterns; in particular in the form of alkali or alkaline earth metal salts, ammonium, or amino alcohols.

[0129] When the anionic surfactant is in salt form, said salt may be selected from alkali metal salts such as sodium or potassium salt, ammonium salts, amine salts and in particular amino alcohols, and alkaline earth metal salts such as magnesium salt.

[0130] Examples of amino alcohol salts include mono-, di- and triethanolamine salts, mono-, di- or tri-isopropanolamine salts, 2-amino 2-methyl 1-propanol salts, 2-amino 2-methyl 1,3-propanediol and tris(hydroxymethyl)aminomethane salts.

[0131] Salts of alkali or alkaline earth metals are preferably used, and in particular salts of sodium or magnesium.

[0132] When present, the anionic surfactant(s) are preferably present in the composition in a total quantity ranging from 0.01 to 30% by weight, in particular ranging from 1 to 28% by weight, in particular from 5 to 25% by weight, preferably from 7 to 23% by weight, better from 8 to 20% by weight, relative to the total weight of the composition (A).

[0133] Amphoteric surfactants

[0134] Preferably, the composition (A) comprises one or more amphoteric surfactant(s).

[0135] The amphoteric surfactant(s) that may be used in the context of the invention are non-siliconized.

[0136] Amphoteric surfactant means a surfactant comprising, as ionic or ionizable groups, one or more anionic groups and one or more cationic groups.

[0137] In particular, alkyl(C8-C2o)betaines, alkyl(C8-C2o)sulfobetaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines and alkyl(C8-C2o)-amidalkyl(C6-C8)sulfobetaines may be cited alone or in mixtures.

[0138] They may also be selected from secondary or tertiary aliphatic amine derivatives, possibly quatemized, in which the aliphatic group is a linear or branched chain comprising 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group such as, for example, a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0139] Among the derivatives of secondary or tertiary aliphatic amines, possibly quantified and usable, as defined above, we may also mention the compounds with the following respective structures (A), (B) and (C):

[0140] (A) Ra-CONHCH2CH2-N+(Rb)(Rc)-CH2COO, M+, in which: - Ra represents an alkyl or alkenyl group in C10 to C30 derived from an acid RaCOOH, preferably present in hydrolyzed coconut oil, a heptyl, nonyl or undecyl group; - Rb represents a beta-hydroxyethyl group; and - Rc represents a carboxymethyl group; - M+ represents a cationic counter ion from an alkali metal, alkaline earth metal, such as sodium, an ammonium ion, or an ion from an organic amine, and - X represents an organic or inorganic anionic counter ion, such as one chosen from among halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate; or else M+ and X are absent;

[0141] (B) Ra -CONHCH2CH2-N(B)(B') in which: - B represents the group -CH2CH2OX'; - B' represents the group -(CH2)ZY', with z = 1 or 2; - X' represents the group -CH2COOH, -CH2-COOZ', -CH2CH2COOH, CH2CH2-COOZ', or a hydrogen atom; - Y' represents the group -COOH, -COOZ', -CH2CH(OH)SO3H or the group CH2 CH(OH)SO3-Z'; - Z' represents a cationic counter ion from an alkali or alkaline earth metal, such as sodium, an ammonium ion or an ion from an organic amine; - Ra represents an alkyl or alkenyl group in C10 to C30 of an acid Ra-COOH preferably present in coconut oil or hydrolyzed linseed oil, an alkyl group, especially in Cp and its iso form, an unsaturated Cp group.

[0142] These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caprylamphodipropionate, disodium capryloamphodipropionate, lauroamphodipropionic acid, cocoamphodipropionic acid.

[0143] As an example, we can cite cocoamphodiacetate marketed by the company RHODIA under the trade name MIRANOL® C2M concentrate.

[0144] (C) Ra-NHCH(Y”)-(CH2)nCONH(CH2)nN(Rd)(Re) in which: - Y” represents the group -COOH, -COOZ”, -CH2-CH(OH)SO3H or the group CH2 CH(OH)SO3-Z”; - Rd and Re, independently of each other, represent an alkyl or hydroxyalkyl radical in C1 to C4; - Z” represents a cationic counter ion from an alkali or alkaline earth metal, such as sodium, an ammonium ion or an ion from an organic amine; - Ra represents an alkyl or alkenyl group in C10 to C30 of an acid Ra-COOH preferably present in coconut oil or hydrolyzed linseed oil; - n and n', independently of each other, denotes an integer from 1 to 3.

[0145] Among amphoteric surfactants, preferred are alkyl(C8-C20)betaines such as cocobetaine, alkyl(C8-C20)amidoalkyl(C3-C8)betaines such as cocamidopropylbetaine, and mixtures thereof, and compounds of formula (C ) such as salts, in particular sodium salts, of diethylaminopropyl laurylaminosuccinamate (INCI name: sodium diethylaminopropyl cocoaspartamide).

[0146] When present, the amphoteric surfactant(s) are preferably present in the composition in a total quantity ranging from 0.01 to 15% by weight, better from 0.1 to 12% by weight, in particular from 0.5 to 8% by weight, better from 1 to 5% by weight, relative to the total weight of the composition (A).

[0147] Cationic Surfactants

[0148] Preferably, the composition (A) comprises one or more cationic surfactant(s).

[0149] Said cationic surfactants are non-siliconized, that is to say they do not contain a Si-O group.

[0150] They are preferably chosen from quaternary ammonium salts, primary, secondary or tertiary fatty amines, possibly polyoxyalkylated, or their salts, and mixtures thereof.

[0151] The composition (A) implemented in the process according to the invention may comprise one or more cationic surfactants selected from, alone or in mixture, the following compounds which are quaternary ammonium salts: - compounds corresponding to the following general formula (II): in which: X is an anion specifically chosen from the group of halides, phosphates, acetates, lactates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates; The groups Ri to IL, which may be identical or different, represent an aliphatic group, linear or branched, comprising from 1 to 30 carbon atoms, or an aromatic group such as aryl or alkylaryl, at least one of the groups Ri to R4 designating an aliphatic group, linear or branched, comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms. Aliphatic groups can include heteroatoms such as oxygen, nitrogen, sulfur, and halogens. Examples of aliphatic groups include CrC3O alkyl, CrC3O alkoxy, C2-C6 polyoxyalkylene, C3O-Ci alkylamide, C2-Ci2-C22 alkylamidoalkyl, C2-Ci2-Ci22 alkylacetate, and C3O hydroxyalkyl.

[0152] Among quaternary ammonium salts of formula (II), tetraalkylammonium salts such as dialkyldimethylammonium or alkyltrimethylammonium salts are preferred, in which the alkyl group comprises approximately 12 to 22 carbon atoms, in particular behenyltrimethylammonium salts. onium, stearyltrimethylammonium, distearyldimethylammonium, cetyltrimethylammonium, dicetyldimethylammonium, benzyldimethylstearylammonium; as well as palmitylamidopropyltrimethylammonium salts, stearamidopropyltrimethylammonium salts, stearamidopropyldimethylcetearylammonium salts, or stearamidopropyl-dimethyl-(myristylacetate)-ammonium salts.

[0153] - quaternary ammonium salts of imidazoline, such as those of formula (III): ..... R "h (ni) . q. —CO-™ Rr f ........ ix in which R5 represents an alkenyl or alkyl group comprising 8 to 30 carbon atoms, for example derived from fatty acids of tallow, R6 represents a hydrogen atom, a Ci-C4 alkyl group, or an alkenyl or alkyl group with 8 to 30 carbon atoms; R7 represents a CrC4 alkyl group. R8 represents a hydrogen atom, an alkyl group in Ci-C4, X is an anion chosen from the group of halides, phosphates, acetates, lactates, alkylsulfates, alkyl- or alkylaryl-sulfonates whose alkyl and aryl groups preferably comprise 1 to 20 carbon atoms and 6 to 30 carbon atoms respectively. Preferably, R5 and R6 denote a mixture of alkenyl or alkyl groups comprising 12 to 21 carbon atoms, for example derived from tallow fatty acids, R7 denotes a methyl group, R8 denotes a hydrogen atom.

[0154] - quaternary di- or tri-ammonium salts in particular of formula (IV): --

[0155] in which R9 designates an alkyl radical comprising approximately 16 to 30 carbon atoms, possibly hydroxylated and / or possibly interrupted by one or more oxygen atoms. Rio is chosen from hydrogen or an alkyl radical comprising 1 to 4 carbon atoms or a (R9a)(R10a)(Riia)N-(CH2)3 group, with R9a, RjOa, Rlla, Ru, Rn, Rb and RM, identical or different, chosen from hydrogen or an alkyl radical comprising 1 to 4 carbon atoms, and X is an anion chosen from the group of halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)sulfonates and alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate.

[0156] - quaternary ammonium salts containing at least one ester function, such as those of the following formula (V): (G Oï;—(V) O * 1 neither + . FU in which: Ris is chosen from among the Ci-C6 alkyl groups and the Ci-C6 hydroxyalkyl or dihydroxyalkyl groups; Ri6 is chosen from the R[9-C(O)- group; the R2o groups which are CrC22 hydrocarbon groups, linear or branched, saturated or unsaturated, the hydrogen atom, Ri8 is chosen from the R21-C(O)- group; the R22 groups which are Ci-C6 hydrocarbon groups, linear or branched, saturated or unsaturated; the hydrogen atom;

[0157] Rn, R19 and R2i, identical or different, are chosen from C7-C2i hydrocarbon groups, linear or branched, saturated or unsaturated; r, s and t, whether identical or different, are integers ranging from 2 to 6; y is an integer ranging from 1 to 10; x and z, whether identical or different, are integers ranging from 0 to 10; X is a simple or complex anion, organic or inorganic; provided that the sum x + y + z is from 1 to 15, that when x is 0 then R[6 denotes R20 and that when z is 0 then R[8 denotes R22.

[0158] Preferably, Ri5 designates a methyl, ethyl, hydroxyethyl or dihydroxypropyl group, and more particularly a methyl or ethyl group.

[0159] Advantageously, the sum x + y + z is worth from 1 to 10.

[0160] When R[6 is a hydrocarbon R20 group, it can be long and have from 12 to 22 carbon atoms, or short and have from 1 to 3 carbon atoms.

[0161] When R[8 is a hydrocarbon R22 group, it preferably has 1 to 3 carbon atoms.

[0162] Advantageously, Rn, Ri9 and R2[, identical or different, are chosen from among the Cn-C2i hydrocarbon groups, linear or branched, saturated or unsaturated, and more particularly among the alkyl and alkenyl groups in Cn-C2i, linear or branched, saturated or unsaturated.

[0163] Preferably, x and z, whether identical or different, are equal to 0 or 1.

[0164] Advantageously, y is equal to 1.

[0165] Preferably, r, s and t, whether identical or different, are equal to 2 or 3, and even more particularly are equal to 2.

[0166] The anion X is preferably a halide (chloride, bromide or iodide) or an alkylsulfate, more particularly methylsulfate.

[0167] Examples include compounds of formula (V) such as salts (in particular chloride or methyl sulfate) of diacyloxyethyl dimethylammonium, diacyloxyethyl hydroxyethyl methylammonium, monoacyloxyethyl dihydroxyethyl methylammonium, triacyloxyethyl methylammonium, monoacyloxyethyl hydroxyethyl dimethylammonium, and mixtures thereof. The acyl groups preferably have 14 to 18 carbon atoms and are more particularly derived from a vegetable oil such as palm or sunflower oil. When the compound contains several acyl groups, these may be identical or different.

[0168] The term “fatty amines” means a compound comprising at least one primary, secondary or tertiary amine function, possibly (poly)oxyalkylated, or their salts and comprising at least one C6-C3o hydrocarbon chain, preferably C8-C30.

[0169] Preferably, the useful fatty amines according to the invention are not (poly)oxyalkylated.

[0170] Fatty amines include amidoamines. The amidoamines according to the invention can be selected from fatty amidoamines, the fatty chain being able to be borne by the amine group or by the amido group.

[0171] Amidoamine is understood to mean a compound comprising at least one amide function and at least one primary, secondary or tertiary amine function.

[0172] Fatty amidoamine is understood to be an amidoamine comprising, in general, at least one C6-C3o hydrocarbon chain. Preferably, the fatty amidoamines useful according to the invention are not quaternized.

[0173] Preferably, the fatty amidoamines useful according to the invention are not (poly)oxyalkylated.

[0174] Among the useful fatty amidoamines according to the invention, mention may be made of the amidoamines of the following formula (VI): RCONHR”N(R')2(VI) in which: - R represents a linear or branched monovalent hydrocarbon radical, saturated or unsaturated and substituted or unsubstituted, having from 5 to 29 carbon atoms, preferably from 7 to 23 carbon atoms, and in particular a linear or branched C5-C29 alkyl radical, preferably C7-C23, or a linear or branched C5-C29 alkenyl radical, preferably C7-C23; - R” represents a divalent hydrocarbon radical having fewer than 6 carbon atoms, preferably 2 to 4 carbon atoms, better still, 3 carbon atoms; and - R', identical or different, represent a monovalent hydrocarbon radical having less than 6 carbon atoms, preferably 1 to 4 carbon atoms, linear or branched, saturated or unsaturated and substituted or unsubstituted, preferably a methyl radical.

[0175] Fatty amidoamines of formula (VI) are, for example, selected from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, in particular that marketed by INOLEX CHEMICAL COMPANY under the name LEXAMINE S13, isostearamidopropyl dimethylamine, stearamidoethyl dimethylamine, lauramidopropyl dimethylamine, myristamidopropyl dimethylamine, behenamidopropyl dimethylamine, dilinoleamidopropyl dimethylamine, palmitamidopropyl dimethylamine, ricinoleamindopropyl dimethylamine, soyamidopropyl dimethylamine, avocadoamidopropyl dimethylamine, cocamidopropyl dimethylamine, minkamidopropyl dimethylamine, oatamidopropyl dimethylamine, sesamidopropyl dimethylamine, tallamidopropyl dimethylamine, olivamidopropyl dimethylamine, the palmitamidopropyl dimethylamine, stearamidoethyldiethylamine, brassicamidopropyl dimethylamine and mixtures thereof.

[0176] When present, the total content of cationic surfactant(s) in composition (A) preferably ranges from 0.1 to 10% by weight, in particular from 0.2 to 8% by weight, better from 0.3 to 7% by weight, better still from 0.5 to 5% by weight, relative to the total weight of composition (A).

[0177] Non-ionic surfactants

[0178] Preferably, the composition (A) implemented in the process according to the invention comprises one or more non-ionic surfactant(s).

[0179] Said non-ionic surfactants may be selected from: - alcohols, alpha-diols and alkyl(Ci-C2O)phenols, these compounds being polyethoxylated and / or polypropoxylated and / or polyglycerolated, the number of ethylene oxide and / or propylene oxide groups ranging from 1 to 100, the number of glycerol groups ranging from 2 to 30; or these compounds comprising at least one fatty chain having from 8 to 40 carbon atoms, in particular from 16 to 30 carbon atoms; in particular alcohols having at least one chain alkyl in C8 to C40, saturated or unsaturated, linear or branched, oxyethylenated comprising from 1 to 100 moles of ethylene oxide, preferably from 2 to 50, more particularly from 2 to 40 moles of ethylene oxide and comprising one or two fatty chains; - ethylene oxide and propylene oxide condensates on fatty alcohols; - polyethoxylated fatty amides preferably having 2 to 30 ethylene oxide motifs, polyglycerol fatty amides having on average 1 to 5 glycerol groups and in particular 1.5 to 4; - ethoxylated sorbitan fatty acid esters (or oxyethylenated sorbitan ester) preferably having 2 to 40 ethylene oxide units, - sucrose fatty acid esters, - polyoxyalkylated fatty acid esters, preferably polyoxyethylated, having 2 to 150 moles of ethylene oxide, including oxyethylated vegetable oils, - N-(C6-C24 alkyl)glucamine derivatives, - amine oxides such as (alkyl C10-14)amine oxides or N-(acyl C10-C14)-aminopropylmorpholine oxides. - non-ionic surfactants of the alkyl(poly)glycoside type.

[0180] Non-ionic alkyl(poly)glycoside surfactants can be represented by the following general formula: RlO-(R2O)t-(G)v in which: - RI represents a linear or branched alkyl or alkenyl radical comprising 6 to 24 carbon atoms, in particular 8 to 18 carbon atoms, or an alkylphenyl radical whose linear or branched alkyl radical comprises 6 to 24 carbon atoms, in particular 8 to 18 carbon atoms; - R2 represents an alkylene radical with 2 to 4 carbon atoms, - G represents a sugar motif with 5 to 6 carbon atoms, -1 designates a value from 0 to 10, preferably from 0 to 4, - v designates a value from 1 to 15, preferably from 1 to 4.

[0181] Preferably, the alkyl(poly)glycoside surfactant is an alkyl(poly)glucoside surfactant.

[0182] We particularly prefer alkyl C8 / Ci6-(poly)glucosides 1,4, and in particular decylglucosides and caprylyl / capryl glucosides.

[0183] The oxyethylenated sorbitan esters that can be used in the context of the invention include, in particular, oxyethylenated derivatives of mono- and polyesters of C8-C30 fatty acids and sorbitan, having from 2 to 40 ethylene oxide units. Preferably, oxyethylenated derivatives of mono- and polyesters of C12-C24 fatty acids and sorbitan, having from 4 to 20 ethylene oxide units, are used.

[0184] Examples include sorbitan oxyethylene monolaurate with 4 OE, for example marketed under the name TWEEN 21, sorbitan oxyethylene monolaurate with 20 OE, e.g. marketed under the name TWEEN 20, sorbitan oxyethylene monopalmitate with 20 OE, e.g. marketed under the name TWEEN 40, sorbitan oxyethylene monostearate with 20 OE, e.g. marketed under the name TWEEN 60, sorbitan oxyethylene monostearate with 4 OE, e.g. marketed under the name TWEEN 61, sorbitan oxyethylene tristearate with 20 OE, e.g. marketed under the name TWEEN 65, sorbitan oxyethylene monooleate with 20 OE, e.g. marketed under the name TWEEN 80, 5 OE sorbitan oxyethylene mono-oleate e.g. marketed under the name TWEEN 81, 20 OE sorbitan oxyethylene tri-oleate e.g. marketed under the name TWEEN 85.

[0185] In the present disclosure, and in a manner well known in itself, the term "X OE compound" refers to an oxyethylenated compound comprising X oxyethylene motifs per molecule.

[0186] Preferably, the non-ionic surfactant(s) may be present in composition (A) in a total content ranging from 0.01 to 10% by weight, preferably ranging from 0.05 to 8% by weight, in particular ranging from 0.1 to 5% by weight, and even better from 0.2 to 2% by weight, relative to the total weight of composition (A). Fats different from fatty acids

[0187] The composition (A) implemented in the process according to the invention may further comprise one or more fats different from fatty acids.

[0188] Preferably, the composition (A) implemented in the process according to the invention comprises one or more fats other than fatty acids.

[0189] The term "fatty substance" means an organic compound insoluble in water at 25°C and atmospheric pressure (1.013 x 10⁵ Pa) (solubility less than 5% by weight, and preferably less than 1% by weight, and even more preferably less than 0.1% by weight). Its structure includes at least one hydrocarbon chain comprising at least six carbon atoms and / or a chain of at least two siloxane groups. Furthermore, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), petrolatum, or decamethylcyclopentasiloxane.

[0190] The fats usable in the present invention are neither (poly)oxyalkylated nor (poly)glycerolated.

[0191] Preferably the useful fats according to the invention are non-siliconized.

[0192] The term "non-siliconized fat" means a fat that does not contain Si-O bonds and the term "siliconized fat" means a fat that contains at least one Si-O bond.

[0193] The useful fats according to the invention may be liquid fats (or oils) and / or solid fats. Liquid fats are defined as fats having a melting point less than or equal to 25°C and at atmospheric pressure (1.013 x 10⁵ Pa), and solid fats are defined as fats having a melting point greater than 25°C at atmospheric pressure (1.013 x 10⁵ Pa).

[0194] 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 TA Instruments. In the present application, all melting points are determined at atmospheric pressure (1.013 x 10⁵ Pa).

[0195] More particularly, the liquid fat(s) may be chosen from C6 to C16 liquid hydrocarbons, liquid hydrocarbons comprising more than 16 carbon atoms, non-siliconized oils of animal origin, triglyceride-type oils of vegetable or synthetic origin, fluorinated oils, liquid fatty alcohols, liquid esters of fatty acids and / or fatty alcohols other than triglycerides and mixtures thereof.

[0196] It is recalled that alcohols, esters and fatty acids more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising from 6 to 40, preferably from 8 to 30 carbon atoms, possibly 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.

[0197] As regards liquid hydrocarbons in the C6 to C16 range, these may be linear, branched, possibly cyclic, and are preferably chosen from among the alkanes. By way of example, hexane, cyclohexane, undecane, dodecane, isododecane, tridecane, isoparaffins such as isohexadecane, isodecane, and mixtures thereof may be cited.

[0198] 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 petrolatum (or mineral oil), polydecenes, hydrogenated polyisobutene such as Parleam®, and mixtures thereof.

[0199] Perhydrosqualene can be cited as an example of hydrocarbon oils of animal origin.

[0200] Triglyceride oils of vegetable or synthetic origin are preferably chosen from liquid triglycerides of fatty acids comprising 6 to 30 carbon atoms such as the triglycerides of heptanoic or octanoic acids or, for example, sunflower, corn, soybean, pumpkin, grapeseed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor, avocado oils, caprylic / capric acid triglycerides 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 their mixtures.

[0201] As regards fluorinated oils, these can be chosen from perfluoromethylcyclopentane and perfluoro-1,3 dimethylcyclohexane, sold under the names "FLUTEC® PCI" and "FLUTEC® PC3" by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names "PF 5050®" and "PF 5060®" by 3M, or bromoperfluorooctyl sold under the name "FORALKYL®" by Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name "PF 5052®" by 3M.

[0202] Liquid fatty alcohols suitable for implementing the invention are particularly selected from saturated or unsaturated, linear or branched alcohols, preferably unsaturated or branched, having from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. These fatty alcohols are neither oxyalkylated nor glycerolated. Examples include octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, isostearyl alcohol, oleic alcohol, linolenic alcohol, ricinoleic alcohol, undecylenic alcohol, and linoleic alcohol, and mixtures thereof. Preferably, oleic alcohol is used.

[0203] With regard to liquid esters of fatty acids and / or fatty alcohols, other than the triglycerides mentioned above, one may mention in particular the esters of saturated or unsaturated mono- or poly-aliphatic acids, linear in Cl to C26 or branched in C3 to C26 and of saturated or unsaturated mono- or poly-aliphatic alcohols, linear in Cl to C26 or branched in C3 to C26, the total number of carbons of the esters being greater than or equal to 6, more advantageously greater than or equal to 10.

[0204] Preferably, for monoalcohol esters, at least one of the alcohol or acid is branched.

[0205] Among the monoesters, mention may be made of 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; isocetyl octanoate; oleate isodecyl; 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 2-octyldodecyl isopropyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

[0206] Preferably among 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 shall be used.

[0207] Esters of di- or tricarboxylic acids in C4 to C22 and of alcohols in Cl to C22 and esters of mono-, di-, or tricarboxylic acids and di-, tri-, tetra- or pentahydroxy alcohols in C2 to C26 can also be used.

[0208] Examples include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; din-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 diisanonate; polyethylene glycol distearates, and mixtures thereof.

[0209] The composition may also include, as a fatty acid ester, esters and diesters of sugars of fatty acids in the C6 to C30 range, preferably in the C12 to C22 range. It should be noted that the term "sugar" means oxygenated hydrocarbon compounds possessing several alcohol functional groups, with or without aldehyde or ketone functional groups, and comprising at least four carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides other than the anionic polysaccharides described later.

[0210] Suitable sugars may be cited for example sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives in particular alkylated, such as methylated derivatives like methylglucose.

[0211] Sugar and fatty acid esters may be selected in particular from the group comprising esters or mixtures of sugar esters described above and fatty acids in C6 to C30, preferably in C12 to C22, linear or branched, saturated or unsaturated. If they are unsaturated, these compounds can include one to three carbon-carbon double bonds, conjugated or not.

[0212] Esters can also be selected from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

[0213] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonate, or mixtures thereof, such as mixed oleo-palmitate, oleo-stearate, palmito-stearate esters.

[0214] In particular, 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.

[0215] An example is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0216] Preferably, a liquid ester of monoacid and monoalcohol will be used.

[0217] According to one embodiment, the fats are different from the useful fatty acids according to the invention are chosen from liquid fats, 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.

[0218] Preferably, the liquid fat or fats are chosen from among liquid fatty alcohols, in particular oleic alcohol.

[0219] Solid fats preferably have a viscosity greater than 2 Pa.s, measured at 25°C and at a shear rate of 1 s-1.

[0220] The solid fat(s) are preferably chosen from solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides and mixtures thereof.

[0221] 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 oxyalkylated nor glycerolated.

[0222] 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, 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, better from 10 to 30, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

[0223] The solid fatty alcohols that may be used are preferably selected from saturated or unsaturated, linear or branched (mono)alcohols, preferably linear and saturated, containing 8 to 40 carbon atoms, better 10 to 30, or even 12 to 24 atoms, even better 14 to 22 carbon atoms.

[0224] The solid fatty alcohols that may be used may be selected from, alone or in 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); montanyyl alcohol (or 1-octacosanol); myricyl alcohol (or 1-triacontanol).

[0225] Preferably, the solid fatty alcohol is selected from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristic alcohol, arachidic alcohol, and mixtures thereof, such as cetylstearyl or cetearyl alcohol. Particularly preferred, the solid fatty alcohol is selected from cetyl alcohol, stearyl alcohol, and mixtures thereof, such as cetylstearyl or cetearyl alcohol.

[0226] The solid fatty acid and / or fatty alcohol esters that may be used are preferably selected from C9-C26 carboxylic fatty acid and / or C9-C26 fatty alcohol esters.

[0227] Preferably, these solid fatty acid esters are esters of saturated linear or branched carboxylic acids comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms, and of saturated linear or branched monoalcohols comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. The saturated carboxylic acids may optionally be hydroxylated, and are preferably monocarboxylic acids.

[0228] Esters of di- or tricarboxylic acids in C4-C22 and of alcohols in C1-C22 and esters of mono-, di- or tricarboxylic acids and of di-, tri-, tetra- or pentahydroxylated alcohols in C2-C26 can also be used.

[0229] Examples include octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, hexyl stearate, octyl stearate, myristyle stearate, cetyl stearate, stearyl stearate, octyl pelargonate, cetyl myristate, myristyle myristate, stearyl myristate, diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, din-propyl adipate, dioctyl adipate, maleate dioctyl, octyl palmitate, myristyle palmitate, cetyl palmitate, stearyl palmitate, and mixtures thereof.

[0230] Preferably, the solid fatty acid and / or fatty alcohol esters are selected from C9-C26 alkyl palmitates, in particular myristyle, cetyl, and stearyl palmitates; C9-C26 alkyl myristates such as cetyl myristate, myristate stearyl and myristyle myristate; C9-C26 alkyl stearates, in particular myristyle, cetyl and stearyl stearates; and mixtures thereof.

[0231] A wax, as defined in the present invention, is a lipophilic compound, solid at 25°C and atmospheric pressure, with a reversible solid / liquid phase change, a melting point above approximately 40°C and up to 200°C, and an anisotropic crystalline structure in the solid state. Generally, the size of the wax crystals is such that they diffract and / or scatter light, giving the composition a cloudy, more or less opaque appearance. By heating the wax to its melting point, it can be made miscible with oils and form a microscopically homogeneous mixture, but by lowering the temperature of the mixture to room temperature, the wax recrystallizes, a phenomenon detectable both microscopically and macroscopically (opalescence).

[0232] In particular, the waxes suitable for the invention can be chosen from waxes of animal, vegetable, mineral origin, non-siliconized synthetic waxes and mixtures thereof.

[0233] Examples include hydrocarbon waxes, such as beeswax, particularly of biological origin, lanolin wax, and Chinese insect waxes; rice bran wax, Camauba wax, Candellila wax, Ouricury wax, Alfa wax, Berry wax, Shellac wax, Japanese 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.

[0234] We can also mention microcrystalline waxes in C20 to C60, such as Microwax HW.

[0235] We can also mention PM 500 polyethylene wax marketed under the reference Permalen 50-L polyethylene.

[0236] We can also mention waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched fatty chains, in the C8 to C32 range. Among these, we can mention in particular isomerized jojoba oil, such as trans isomerized partially hydrogenated jojoba oil, in particular that manufactured or marketed by the company Desert Whale under the trade reference Iso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated lanolin oil, and di-(trimethyloi-1,1,1 propane tetrastearate), in particular that sold under the name Hest 2T-4S® by the company HETERENE.

[0237] Waxes obtained by hydrogenation of esterified castor oil with cetyl alcohol, such as those sold under the names Phytowax ricin 16L64® and 22L73® by the company SOPHIM, can also be used.

[0238] As a wax, a C20 to C40 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 notably sold under the names "Kester Wax K 82 P®", "Hydroxypolyester K 82 P®" and "Kester Wax K 80 P®" by the company KOSTER KEUNEN.

[0239] It is also possible to use microwaxes in the compositions of the invention;Examples include camauba microwaxes, such as the one marketed under the name MicroCare 350® by MICRO POWDERS; synthetic wax microwaxes, such as the one marketed under the name MicroEase 114S® by MICRO POWDERS; microwaxes made from a mixture of camauba wax and polyethylene wax, such as those marketed under the names Micro Care 300® and 310® by MICRO POWDERS; microwaxes made from a mixture of camauba wax and synthetic wax, such as the one marketed under the name Micro Care 325® by MICRO POWDERS; polyethylene microwaxes, such as those marketed under the names Micropoly 200®, 220®, 220L® and 250S® by MICRO POWDERS; and polytetrafluoroethylene microwaxes, such as those marketed under the names Microslip 519® and 519 L® by the company MICRO POWDERS. ;

[0240] Waxes are preferably chosen from mineral waxes such as paraffin wax, petroleum jelly, lignite or ozokerite; vegetable waxes such as cocoa butter or waxes from cork or sugar cane fibers, olive wax, rice wax, hydrogenated jojoba wax, Ouricoury wax, Camauba wax, Candelila wax, Alfa wax, or absolute flower waxes such as blackcurrant flower essential wax sold by the BERTIN company (France); waxes of animal origin such as beeswax or modified beeswax (cerabellina), spermaceti, lanolin wax and lanolin derivatives; microcrystalline waxes; and mixtures thereof.

[0241] Ceramides or ceramide analogues such as glycoceramides, which can be used in compositions according to the invention, are known; in particular, ceramides of classes I, II, III and V according to the DAWNING classification may be mentioned.

[0242] Ceramides or their analogues that may be used preferably conform to the following formula: R3CH(OH)CH(CH2OR2)(NHCOR1), in which: R 1 designates an alkyl group, linear or branched, saturated or unsaturated, derived from C14-C30 fatty acids, this group being able to be substituted by a hydroxyl group in the alpha position, or a hydroxyl group in the omega position esterified by a saturated or unsaturated fatty acid in the Ci6-C30 position; 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; R3 designates a hydrocarbon group in Ci5-C26, saturated or unsaturated in the alpha position, this group being able to be substituted by one or more alkyl groups in Ci-C14; it being understood that in the case of natural ceramides or glycoceramides, R3 can also designate an alpha-hydroxyalkyl group in Ci5-C26, the hydroxyl group possibly being esterified by an alpha-hydroxy acid in Ci6-C30.

[0243] The ceramides most particularly preferred are the compounds for which RI denotes a saturated or unsaturated alkyl derived from fatty acids in Ci6-C22; R 2 denotes a hydrogen atom and R 3 denotes a linear group saturated in C15.

[0244] Preferably, ceramides are used in which R 1 designates a saturated or unsaturated alkyl group derived from fatty acids in Ci4-C30; R 2 designates a galactosyl or sulfogalactosyl group; and R 3 designates a -CH=CH-(CH2)i2-CH3 group.

[0245] Compounds can also be used in which R 1 designates a saturated or unsaturated alkyl radical derived from fatty acids in C[2-C22]; R 2 designates a galactosyl or sulfogalactosyl radical and R 3 designates a hydrocarbon radical in C[2-C22], saturated or unsaturated and preferably a -CH=CH-(CH2)i2-CH3 group.

[0246] As particularly preferred compounds, we may also mention 2-N-linoleoylamino-octadecane-l,3-diol; 2-N-oleoylamino-octadecane-l,3-diol; 2-N-palmitoylamino-octadecane-l,3-diol; 2-N-stearoylamino-octadecane-l,3-diol; 2-N-behenoylamino-octadecane-l,3-diol; 2-N-[2-hydroxy-palmitoyl]-amino-octadecane-l,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, cetyl acid N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide, and bis-(N-hydroxyethyl N-cetyl)malonamide; and mixtures thereof. Preferably, N-oleoyldihydrosphingosine shall be used.

[0247] Solid fats are preferably chosen from solid fatty alcohols, in particular from cetyl alcohol, stearyl alcohol and their mixtures such as cetylstearyl or cetearyl alcohol.

[0248] Butters can also be used.

[0249] For the purposes of this invention, "butter" (also referred to as "pasty fat") means a lipophilic fatty compound with a reversible solid / liquid phase change, 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 point above 25°C and a melting point below 60°C.

[0250] 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.al0_173, point 13.2.2.2. Shea Butter, Borneo Tallow, and Related Fats (Vegetable Butters)).

[0251] Particular examples include shea butter, Nilotica shea butter (Butyrospermum parkii), Galam butter (Butyrospermum parkii), Borneo butter or fat (Tengkawang tallow) (Shorea stenoptera), Shorea butter, Illipe butter, Madhuca or Bassia Madhuca longifolia butter, Mowrah butter (Madhuca Eatifolia), 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 (Kpangnan) butter (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.

[0252] Shea butter is an example of a preferred butter.

[0253] Shea butter is known to be 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.

[0254] According to a preferred embodiment, the fats other than the useful fatty acids according to the invention are chosen from solid fats, preferably from solid fatty alcohols.

[0255] The total content of the fat(s) other than fatty acids varies, preferably, from 5 to 30% by weight, more preferably from 8 to 25% by weight, and better from 10 to 20% by weight, relative to the total weight of the composition.

[0256] In a particular embodiment, the composition(A) implemented in the process according to the invention comprises one or more solid fats other than fatty acids, the total content of the solid fat(s) other than fatty acids varying preferably from 5 to 30% by weight, more preferably from 8 to 25% by weight, and better from 10 to 20% by weight, relative to the total weight of the composition (A).

[0257] In another particular embodiment, the composition (A) implemented in the process according to the invention comprises one or more liquid fats other than fatty acids, the total content of the liquid fat(s) other than fatty acids varying, preferably, from 0.5 to 15% by weight, more preferably from 1 to 10% by weight, and better from 2 to 5% by weight, relative to the total weight of the composition (A).

[0258] According to a preferred embodiment, the composition (A) implemented in the process according to the invention comprises one or more solid fats other than fatty acids, preferably chosen from solid fatty alcohols and one or more liquid fats other than fatty acids, preferably chosen from liquid fatty alcohols. Solvents

[0259] The composition (A) implemented in the process according to the invention may also include at least one organic solvent.

[0260] Preferably, the composition (A) implemented in the process according to the invention comprises at least one organic solvent.

[0261] Examples of organic solvents include linear or branched C2-C4 alkanols such as ethanol and isopropanol; polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, glycerol, propane-1,3-diol, dipropylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, as well as aromatic alcohols or ethers such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

[0262] Preferably, the organic solvent(s) is / are chosen from among the polyols, more preferably glycerol, propane-1,3-diol and their mixtures.

[0263] The organic solvent(s) may be present in a total quantity ranging from 0.01 to 30% by weight, preferably ranging from 2 to 25% by weight, relative to the total weight of the composition.

[0264] Furthermore, preferably, the composition (A) implemented in the process according to the invention is an aqueous composition. Preferably, the composition (A) comprises water in an amount greater than or equal to 5% by weight, preferably greater than or equal to 10% by weight, better greater than or equal to 15% by weight relative to the total weight of the composition (A). Additives in the composition (A)

[0265] The composition (A) implemented in the process according to the invention may optionally include one or more additives, different from the compounds previously described and among which we may mention cationic, anionic, non-ionic, amphoteric polymers or mixtures thereof, anti-dandruff agents, anti-seborrheic agents, anti-hair loss and / or hair regrowth agents, vitamins and pro-vitamins including panthenol, sunscreens, mineral or organic pigments, plasticizers, solubilizing agents, opacifying or pearlescent agents, antioxidants, hydroxy acids, perfumes, preservatives.

[0266] Of course, a person 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 (A) implemented in the process according to the invention are not, or substantially not, altered by the envisaged addition(s).

[0267] The above additives may generally be present in quantities of each of them between 0 and 20% by weight, relative to the total weight of the ready-to-use composition. Step a) of coloring

[0268] According to one embodiment, the composition (A) implemented in the process according to the invention comprises at least one oxidizing agent, preferably hydrogen peroxide.

[0269] By "chemical oxidizing agent" according to the invention, we mean an oxidizing agent other than oxygen from the air.

[0270] Preferably, the composition (A) used in the process according to the invention is mixed at the time of use with a composition (O) comprising at least one chemical oxidizing agent, preferably hydrogen peroxide.

[0271] According to this embodiment, the ready-to-use composition is obtained by mixing at least two compositions: a composition (A) comprising: - at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products. And a composition (O) comprising one or more chemical oxidizing agents, preferably hydrogen peroxide.

[0272] According to one embodiment, the process according to the invention includes a step of mixing the composition (A) used in the process according to the invention with an oxidizing composition (O) comprising at least one chemical oxidizing agent. This mixing step is preferably carried out at the time of use, just before applying the resulting composition to the hair.

[0273] According to this embodiment, the process for coloring keratin fibers, preferably hair, according to the invention comprises the step of applying to the keratin fibers a composition resulting from the mixture, at the time of use, of at least two compositions: a) a composition (A) comprising: - at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products and b) an oxidizing composition (O) comprising one or more chemical oxidizing agents, preferably hydrogen peroxide.

[0274] More specifically, the chemical oxidizing agent(s) are selected from hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, peroxygenated salts such as persulfates, perborates, peracids and their precursors, and alkali or alkaline earth metal percarbonates and mixtures thereof. Preferably, the chemical oxidizing agent is selected from hydrogen peroxide.

[0275] The oxidizing composition (O) is preferably an aqueous composition. In particular, it 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.

[0276] It may also include one or more organic solvents selected 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.

[0277] The oxidizing composition (O) also preferably comprises one or more acidifying agents. Examples of acidifying agents include mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, and sulfonic acids.

[0278] In addition, the oxidizing composition (O) may include fatty substances such as those described above, preferably selected from fatty alcohols, liquid hydrocarbons comprising more than 16 carbon atoms and mixtures thereof, surfactants, polymers.

[0279] Usually, the pH of the oxidizing composition, when aqueous, is less than 7.

[0280] Preferably, the oxidizing composition (O) comprises hydrogen peroxide as an oxidizing agent, in aqueous solution, the concentration of which varies, more particularly, from 0.1 to 50%, more particularly between 0.5 and 20%, and even more preferably between 1 and 15% by weight relative to the weight of the oxidizing composition.

[0281] Composition (A) can be applied to dry or moist keratin fibers.

[0282] Composition (A) is left on the keratin fibers for a period of time ranging, preferably, from 5 minutes to 60 minutes, more preferably from 10 minutes to 30 minutes, in order to obtain the desired staining of the keratin fibers. Step b) of rinsing

[0283] According to the coloring process of the invention, the keratin fibers are rinsed, preferably with water, possibly after having undergone washing with shampoo.

[0284] According to one embodiment, after the coloring treatment, the keratin fibers are rinsed with water, possibly undergo washing with shampoo followed by rinsing with water, before being dried or left to dry.

[0285] Step c) of treatment of the solution from rinsing

[0286] The coloring process of the invention then includes a step of treating the solution obtained from rinsing the keratin fibers before its disposal as effluent.

[0287] When the keratin fibers have been rinsed with water, the solution obtained from rinsing comprises mainly water, and the ingredients of the coloring composition (A), including, dyes selected from oxidation dyes, direct dyes, their mixtures and their reaction products.

[0288] When keratin fibers have been pre-washed with shampoo, the ingredients of the shampoo are also found in the solution obtained from rinsing the keratin fibers.

[0289] The solution obtained from rinsing the keratin fibers is recovered and treated with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent. Persulfates

[0290] The useful persulfates according to the invention can be chosen from sodium, potassium or ammonium persulfates and mixtures thereof.

[0291] The total content of the persulfate(s) varies, preferably, from 0.001 to 30% by weight, more preferably from 0.004 to 20% by weight, even more preferably from 0.01 to 10% and better from 0.05 to 5% by weight, relative to the total weight of the solution obtained from rinsing. A chemical oxidizing agent distinct from persulfates

[0292] Preferably, the chemical oxidizing agent(s) other than persulfates are chosen from hydrogen peroxide, alkaline earth metal peroxides such as strontium or calcium peroxide, peroxygenated salts such as by Examples include perborates, peracids and their precursors, alkali or alkaline earth metal percarbonates such as sodium percarbonate and peracids and their precursors; alkali metal bromates or ferricyanides, solid chemical oxidizing agents generating hydrogen peroxide such as urea peroxide and polymeric complexes capable of releasing hydrogen peroxide, particularly those comprising a vinyl heterocyclic monomer such as polyvinylpyrrolidone / H2O2 complexes, especially those in powder form; oxidases producing hydrogen peroxide in the presence of a suitable substrate (e.g. glucose in the case of glucose oxidase or uric acid with uricase).

[0293] More preferably, the chemical oxidizing agent(s) are chosen from hydrogen peroxide, strontium peroxide, calcium peroxide, alkali or alkaline earth metal percarbonates such as sodium percarbonate and mixtures thereof.

[0294] The total content of the chemical oxidizing agent(s) other than persulfates varies, preferably, from 0.001 to 20% by weight, more preferably from 0.004 to 10% by weight, even more preferably from 0.01 to 5% and better from 0.05 to 3% by weight, relative to the total weight of the solution obtained from rinsing. Alkaline agent

[0295] The useful alkali agents are as defined above.

[0296] Preferably, they are chosen from among alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia, carbonates or bicarbonates such as ammonium (hydrogen)carbonate, sodium (hydrogen)carbonates and potassium (hydrogen)carbonates, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate, sodium or potassium hydroxides and mixtures thereof.

[0297] More preferably, the alkali agent(s) are chosen from sodium metasilicate, sodium silicate, monoethanolamine, ammonium hydroxide, sodium hydroxide and mixtures thereof.

[0298] The total content of the alkaline agent(s) varies, preferably, from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the solution obtained from rinsing.

[0299] According to a particular embodiment, the total content of alkanolamine(s), preferably monoethanolamine, varies preferably, when present, from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the solution obtained from rinsing.

[0300] According to a particular embodiment, the total ammonium hydroxide content, when present, varies preferably from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the solution obtained from rinsing.

[0301] According to a particular embodiment, the total content of sodium hydroxide, potassium hydroxide and their mixtures, preferably varies from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the solution obtained from rinsing.

[0302] Preferably, the persulfates are selected from sodium, potassium or ammonium persulfates and mixtures thereof; the chemical oxidizing agents other than persulfates are selected from hydrogen peroxide, strontium peroxide, calcium peroxide, alkali or alkaline earth metal percarbonates such as sodium percarbonate and mixtures thereof, and the alkali agents are selected from sodium metasilicate, sodium silicate, monoethanolamine, ammonium hydroxide, sodium hydroxide and mixtures thereof.

[0303] More preferably, the persulfates are chosen from sodium persulfates; the chemical oxidizing agents other than persulfates are chosen from hydrogen peroxide, strontium peroxide, calcium peroxide, better, hydrogen peroxide, and the alkali agents are chosen from ammonium hydroxide, sodium hydroxide and mixtures thereof, better, sodium hydroxide.

[0304] The persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s) may be added alone or in mixture to the solution obtained from rinsing.

[0305] According to one embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s) may be added, alone or in mixture directly into the solution obtained from rinsing.

[0306] According to another embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkali(s) may be added, alone or in mixture, to the solution obtained from rinsing from a composition (B).

[0307] According to this embodiment, the composition (B) comprises at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkali agent, alone or in mixture.

[0308] Preferably, the composition (B) comprises water in an amount greater than or equal to 5% by weight, preferably greater than or equal to 10% by weight, better greater than or equal to 15% by weight relative to the total weight of the composition (B), even better, the water content varies from 15% to 90% by weight, preferably from 25% to 80% by weight relative to the total weight of the composition (B).

[0309] The composition (B) may take the form of a solution, a powder mixture, a compacted powder pellet, a pod composed of different compartments of liquids or solids.

[0310] According to another embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkali(s) may be added, alone or in a mixture from two or three compositions, in the first case one of the two compositions comprising two of the reactants, and in the last case each composition comprising one of the reactants.

[0311] The compositions can then be added to the solution from the rinsing at the same time or separately, sequentially, simultaneously or in mixture.

[0312] Preferably, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s) are added, alone or in mixture, directly into the solution obtained from rinsing.

[0313] According to this embodiment, they can be added sequentially or simultaneously.

[0314] Preferably, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s), alone or in mixture, is / are brought into contact with the solution from the rinse for a period of 10 to 90 minutes, more preferably for a period of 30 to 60 minutes.

[0315] Advantageously, the solution from the rinsing is brought into contact with the composition (B) comprising at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent, alone or in mixture for a period of 10 minutes to 90 minutes, more preferably for a period of 30 minutes to 60 minutes.

[0316] Advantageously, the contact is made at a temperature between 20°C and 40°C, preferably between 25°C and 30°C.

[0317] Advantageously, the contact is made under magnetic or mechanical agitation.

[0318] Advantageously, the contact is made at atmospheric pressure.

[0319] Preferably, the treatment of the solution from the rinsing is carried out at atmospheric pressure, under magnetic stirring (using a magnetic stir bar for example) for a treatment time ranging from 30 minutes to 60 minutes.

[0320] Preferably, when generated, the solution from rinsing is at a temperature between 30 and 40°C, and is left at room temperature for the entire duration of the treatment.

[0321] Advantageously, the solution from the rinsing to which at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent have been added, alone or in mixture, is subjected to one or more external activation sources.

[0322] Among the useful external activation sources according to the invention, we can mention activation by heat, by ultrasound, by microwaves, by plasma, by electric current, by radiation, such as radiation in the visible, in the infrared or in the ultraviolet or by bubbler of gas, preferably by bubbler of dioxygen or air.

[0323] Advantageously, the solution from rinsing is activated by radiation, in particular by UV radiation.

[0324] Advantageously, the wavelengths of the radiation are between 100 and 400 nm, preferably between 280 and 400 nm, more preferably between 320 and 400 nm.

[0325] Advantageously, these activation modes are cumulative, for example, activation is done both by radiation, in particular by UV radiation and by gas bubbling.

[0326] A process for treating water comprising at least one colorant, preferably selected from oxidation colorants, direct colorants, mixtures thereof and reaction products thereof, wherein the water is brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

[0327] Another object of the invention is a process which implements a water treatment step comprising at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products by at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

[0328] According to one embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkali(s) may be added, alone or in mixture directly into the water comprising at least one colorant, preferably chosen from oxidation colorants, direct colorants, their mixtures and their reaction products.

[0329] Such water is also referred to in the context of this invention as effluent. Persulfates

[0330] The persulfates are as described previously for step c) of the coloring process.

[0331] The total content of the persulfate(s) varies, preferably, from 0.001 to 30% by weight, more preferably from 0.004 to 20% by weight, even more preferably from 0.01 to 10%, and better still from 0.05 to 5% by weight, relative to the total weight of the effluent. A chemical oxidizing agent other than persulfates.

[0332] The chemical oxidizing agent(s) other than persulfates are as described previously for step c) of the coloring process.

[0333] The total content of the chemical oxidizing agent(s) other than persulfates varies, preferably, from 0.001 to 20% by weight, more preferably from 0.004 to 10% by weight, even more preferably from 0.01 to 5% and better from 0.05 to 3% by weight, relative to the total weight of the effluent composition. Alkaline agent

[0334] The alkaline agents are as described previously for step c) of the coloring process.

[0335] The total content of the alkaline agent(s) varies, preferably, from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the effluent.

[0336] According to a particular embodiment, the total content of alkanolamine, preferably monoethanolamine, when present, varies preferably from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the effluent.

[0337] According to a particular embodiment, the total ammonium hydroxide content, when present, varies preferably from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the effluent.

[0338] According to a particular embodiment, the total content of sodium hydroxides, potassium hydroxide and their mixtures, varies preferably, when present, from 0.001 to 25% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the effluent.

[0339] The effluent is treated with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent, as described above.

[0340] The persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s) may be added alone or in mixture to the effluent.

[0341] According to one embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s) may be added, alone or in mixture, directly into the effluent.

[0342] According to another embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkali(s) may be added, alone or in a mixture, from a composition (B) as described above.

[0343] According to another embodiment, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkali(s) may be added, alone or in a mixture from two or three compositions, in the first case one of the two compositions comprising two of the reactants, and in the last case each composition comprising one of the reactants.

[0344] The compositions can then be added to the effluent at the same time or separately, sequentially, simultaneously or in mixture.

[0345] Preferably, the persulfate(s), the chemical oxidizing agent(s) other than persulfate(s) and the alkaline agent(s) are added, alone or in mixture, directly into the effluent.

[0346] According to this embodiment, they can be added sequentially or simultaneously.

[0347] Preferably, the persulfate(s), the chemical oxidizing agent(s) other than persulfates and the alkaline agent(s), alone or in mixture, is / are brought into contact with the effluent for a period of 2 to 120 minutes, more preferably for a period of 5 to 90 minutes, even better for a period of 20 to 60 minutes.

[0348] Advantageously, the effluent is brought into contact with the composition (B) comprising at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent, alone or in mixture for a period of 2 minutes to 120 minutes, more preferably for a period of 5 minutes to 90 minutes, even better for a period of 20 to 60 minutes.

[0349] Advantageously, the contact is made at a temperature between 20°C and 40°C, preferably between 25°C and 30°C.

[0350] Advantageously, the contact is made under magnetic or mechanical agitation.

[0351] Advantageously, the contact is made at atmospheric pressure.

[0352] Preferably, the effluent treatment is carried out at atmospheric pressure, under magnetic agitation (using a magnetized bar for example) for a treatment time ranging from 30 minutes to 60 minutes.

[0353] Preferably, the effluent is at a temperature between 30 and 40°C, and is left at ambient temperature throughout the treatment.

[0354] Advantageously, the composition to be treated, corresponding to the effluent to which at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent have been added, alone or in mixture, is subjected to one or more external activation sources as described above.

[0355] Another object of the present invention relates to the use of at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent as defined above for the degradation of dyes, preferably selected from oxidation dyes, direct dyes, their mixtures and their reaction products present in an aqueous solution comprising at least 80% water, preferably at least 90% water, more preferably at least 95% water. Water analysis - Characterization

[0356] After being brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent, the solutions from rinsing the keratin fibers of the coloring process or the waters comprising at least one dye, preferably chosen from oxidation dyes, direct dyes, their mixtures and their reaction products are analyzed.

[0357] The waters treated by the processes as described above are analyzed according to the following protocols and methods of analysis.

[0358] The degradation of the dyes can be monitored by ultra-performance liquid chromatography (UPLC).

[0359] A liquid chromatography method was used with the following material:

[0360] • Waters class H, 1 liquid chromatograph or equivalent.

[0361] • ACQUITY UPLC CSH column, Waters. Two types of detection are used for monitor dyes and their degradation products:

[0362] • UV-visible spectroscopy using a diode array detector, this is a detector that allows the measurement of the absorbance of a sample at different wavelengths. This detector has the capacity to scan a wide spectrum of wavelengths simultaneously, thus allowing us to map the compounds present.

[0363] • Mass spectrometry, which was used to further the identification of the compounds present.

[0364] It was therefore possible to monitor the degradation of the dyes both qualitatively and quantitatively.

[0365] The colour of the waters can be evaluated by colorimetry.

[0366] It has therefore been shown that the process according to the invention makes it possible to degrade effectively the dyes or their reaction products either contained in the solutions from rinsing from the process of coloring keratin fibers, or contained in the effluents. Examples

[0367] In the following examples, all quantities are given as mass percentage of active material (AM) relative to the total weight of the composition (unless otherwise stated).

[0368] Composition (A) Colouring composition

[0369] The colouring composition comprises the following oxidation colouring agents: TOLUENE-2,5-DIAMINE, 2.5%; 2,4-DIAMINOPHENOXYETHANOL HCL, 0.70%; RESORCINOL, 0.77%; m-AMINOPHENOL, 0.45%. The composition also comprises, in particular, alkaline agents, fatty substances, a sequestering agent and surfactants. Oxidizing composition

[0370] The oxidizing composition (O) includes, in particular, hydrogen peroxide.

[0371] At the time of use, the colouring composition is mixed with 1 times its weight of oxidant (O). The mixture is then applied to a strand of pigmented hair (1g, Caucasian type, tone level 5) at a rate of 1.2g of mixture / g of hair.

[0372] After 35 minutes of exposure on a plate thermostatically controlled at 27°C, the hair is rinsed with water for 1 minute, washed with a standard shampoo for 1 minute in a beaker containing 250mL of water at 35°C, then rinsed again with water.

[0373] The solutions from rinsing the hair are collected.

[0374] Sodium persulfate, sodium hydroxide and hydrogen peroxide are added to the rinse solution in respective amounts of 0.5%, 0.05% and 0.25% by weight of the total weight of the rinse solution.

[0375] The treatment consists of adding the indicated active ingredients to the rinse solution and maintaining magnetic stirring throughout the treatment (at room temperature and atmospheric pressure). Once the treatment time has elapsed, stirring is stopped and the sample is immediately stabilized by adding acid to pH 5.

[0376] The degradation of the oxidation dyes detected in the rinse water is then evaluated after treatment, as well as the color of the water.

[0377] After Ih of treatment, the following results are obtained:

[0378] Table 1: Evaluation of the degradation of oxidation dyes by analytical method Precursors % degradation after treatment time: RESORCINOL >97.4 m-AMINOPHENOL >88.4 TOLUENE-2,5-DIAM >95.4 INE

[0379] * percentage of dye degradation (the % values ​​are area ratios derived from UPLC analyses: ratio between the area value of the integrated peak of the dye after treatment and the equivalent value before treatment). The process according to the invention makes it possible to efficiently degrade the dyes still present after treatment.

[0380] To evaluate the colors, the samples were photographed under standardized conditions: under a BYK brand light box (standardized D65 light). The color of the effluent is expressed from this photograph in the L*a*b* CIE 1976 color space. In this system, L* represents lightness.

[0381] The higher the value of L*, the lighter the color of the solution from rinsing.

[0382] The value L* of each effluent is compared to the reference before treatment L*0.

[0383] Table 2: Evaluation of the discoloration of the rinsing solution according to the different treatments by colorimetry Precursors Untreated Treated L*0 22 22 L* (after Ih) 22 69 Decolorization (AL= L*- L*0, after Ih) 0 47

[0384] These results show that the color of the treated rinsing solution is lighter than that of the untreated solution, which reflects the degradation of the dyes with the process according to the invention.

[0385] The process according to the invention therefore makes it possible to treat the solutions from rinsing hair coloring in such a way as to degrade very significantly any residual bases and oxidation couplers as well as their reaction products found in the solutions from rinsing keratin fibers.

Claims

Demands

1. A method for coloring keratin fibers, preferably human, more preferably hair, comprising the following steps: - a) application to the keratin fibers of a composition (A) comprising at least one dye, preferably selected from oxidation dyes, direct dyes, mixtures thereof and reaction products; - b) rinsing the keratin fibers, preferably with water; - c) treatment of the solution obtained from rinsing the keratin fibers with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent.

2. A method according to the preceding claim, wherein the persulfate or persulfates are selected from sodium, potassium or ammonium persulfates and mixtures thereof.

3. A process according to any one of the preceding claims, wherein the total content of the persulfate(s) varies from 0.001 to 30% by weight, preferably from 0.004 to 20% by weight, more preferably from 0.01 to 10% and better from 0.05 to 5% by weight, relative to the total weight of the solution obtained from rinsing.

4. A method according to any one of the preceding claims, wherein the chemical oxidizing agent(s) other than persulfates are selected from hydrogen peroxide, strontium peroxide, calcium peroxide, alkali or alkaline earth metal percarbonates such as sodium percarbonate and mixtures thereof.

5. A process according to any one of the preceding claims, wherein the total content of the chemical oxidizing agent(s) other than persulfates varies from 0.001 to 20% by weight, preferably from 0.004 to 10% by weight, more preferably from 0.01 to 5% and better from 0.05 to 3% by weight, relative to the total weight of the solution obtained from rinsing.

6. A process according to any one of the preceding claims, wherein the alkali agent(s) are selected from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonium hydroxide, carbonates or bicarbonates such as ammonium (hydrogen)carbonate, (hydrogen)carbonate of sodium and potassium (hydrogen)carbonates, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate, sodium or potassium hydroxides and mixtures thereof, preferably among sodium metasilicate, sodium silicate, monoethanolamine, ammonium hydroxide, sodium hydroxide and mixtures thereof.

7. A method according to any one of the preceding claims, wherein the total content of the alkali agent(s) varies from 0.001 to 25% by weight, preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight relative to the total weight of the solution obtained from rinsing.

8. A method according to any one of the preceding claims, wherein the solution obtained from rinsing the keratin fibers is subjected to an activation source selected from heat, ultrasound, microwaves, plasma, an electric current, radiation, such as radiation in the visible, infrared or ultraviolet range, or even gas bubbling, preferably oxygen or air bubbling, preferably radiation, preferably UV radiation, preferably the wavelengths of the radiation are between 100 and 400 nm, preferably between 280 and 400 nm, more preferably between 320 and 400 nm.

9. A process according to any one of the preceding claims, wherein the solution obtained from rinsing the keratin fibers is brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent for a period of 2 minutes to 120 minutes, more preferably for a period of 5 minutes to 90 minutes, even better for a period of 20 to 60 minutes.

10. A method for treating water comprising at least one dye, preferably selected from oxidation dyes, direct dyes, mixtures thereof and reaction products, wherein this water is brought into contact with at least one persulfate, at least one chemical oxidizing agent other than persulfates and at least one alkaline agent as defined in any one of the preceding claims.

11. Use of at least one persulfate, at least one chemical oxidizing agent other than persulfates, and at least one alkaline agent such as as defined in any of the preceding claims for the degradation of dyes, preferably selected from oxidation dyes, direct dyes, their mixtures and their reaction products present in an aqueous solution comprising at least 80% water, preferably at least 90% water, more preferably at least 95% water.