FR2999910A1 - Bleaching keratin fibers such as hair, comprises applying bleaching agent including mixture of compositions in compressed form on keratin fibers, where compositions comprise e.g. persulfate and compound, which is different from persulfate - Google Patents

Abstract

Bleaching keratin fibers comprises applying a bleaching agent including a mixture of compositions in compressed form on keratin fibers. The first composition (A) comprises persulfate. The second composition (B) comprises a compound, which is different from persulfate and an aqueous composition (C). An independent claim is included for a device comprising compartments including the composition A, the composition B and the composition C.

Description

The present invention relates to a process for the bleaching of keratinous fibers, in particular hair, using at least two compositions in compressed form, in the presence of a keratinous fiber, comprising the application of several compositions in compressed form. at least one aqueous composition. The fading of human keratinous fibers, and more particularly of the hair, is by oxidation of the pigment "melanin" resulting in the solubilization and the partial or total elimination of this pigment. To bleach the hair, bleaching powders containing a peroxygenated reagent such as persulfates, perborates and percarbornates, ammonium or alkali metal, which are associated at the time of use with an aqueous composition of peroxide peroxide, are used in particular. 'hydrogen.

Since peroxygenated salts and hydrogen peroxide are relatively inefficient in acidic medium, it is often necessary to activate them at basic pH in order to obtain an adequate formation of active oxygen. It is therefore customary to add to the bleaching powders, alkaline compounds such as silicates and di or tribasic alkali or alkaline earth metal phosphates, and in particular alkali metal metasilicates, optionally in the presence of precursor agents. ammonia such as ammonium salts. Bleaching powders, however, tend to form dust during handling, transport and storage. However, the products that compose them (persulfates, alkali silicates) are aggressive and in particular irritating to the eyes, the respiratory tract and the mucous membranes. In order to overcome the volatility problem of bleaching powders, less volatile powders have been developed by adding additives making it possible to reduce the level of fine particles and pastes which comprise the said pulverulent agents (peroxygenated salts, alkaline agents, thickeners) in an organic inert liquid carrier. However, these less volatile powders and pastes may be less effective than simple starting powders. Pasta, as well as powders, nevertheless require certain precautions when handling, especially when it comes to weigh them to mix with the oxidizing composition, to avoid staining clothes. The object of the present invention is to provide a process for the bleaching of keratinous fibers which makes it possible to solve the handling problems of the compositions known from the prior art, in particular a process using compositions for the bleaching of keratin fibers, having in compressed form, to mix directly at the time of use with an aqueous composition.

This method makes it possible to avoid handling problems related to the volatility of the powders or the weighing problems by proposing a product in the form of a compact solid and ready to use, without a dosage step. In addition, the resistance of the compositions for the bleaching of keratinous fibers to temperature variations is improved, and in particular the problem of destabilization during storage at low temperatures and during transport including temperature cycles is avoided. This method also makes it possible to avoid loss of lightening power. These objects are achieved with the present invention which relates to a process for bleaching keratinous fibers comprising applying to the keratinous fibers a bleaching agent resulting from the blending of at least two compositions in compressed form, the first (composition A) comprising at least one persulfate and the second (composition B) comprising at least one compound (i) different persulfates, and at least one aqueous composition (composition C). The compositions A and B according to the invention are in compressed or compacted form, that is to say that they have been obtained by a process of compression (or compaction) of particles, in particular by compression or compaction of a powder or granules. Preferably, the composition A and / or the composition B in compressed form according to the invention has at least one dimension greater than 6 mm, preferably greater than or equal to 8 mm, preferably greater than or equal to 10 mm.

In particular, each composition in compressed form has at least one smaller dimension and at least one larger dimension, at least one of the dimensions being greater than 6 mm, preferably greater than or equal to 8 mm, preferably greater than or equal to at 10 mm.

The compositions in compressed form according to the invention may be in particular in the form of a tablet, tablet, lozenge, roller, etc., which may have upper and lower flat or convex, concave or convex faces and round shapes, oval, square, rectangular, octagonal, polygonal. According to one embodiment, the compositions in compressed form may for example be in the form of a tablet or tablet of round shape, they may have a diameter ranging from 0.5 to 3 cm, in particular from 1 to 2 cm and a thickness. ranging from 1 to 20 mm, in particular from 3 to 10 mm.

According to one embodiment, the compositions in compressed form may be in the form of a tablet, which may have a length of 1 to 10 cm, a width of 0.5 to 5 cm and a thickness of 1 to 20 mm, in especially from 3 to 10 mm. The compositions in compressed form according to the invention may have a mass ranging from 0.5 to 10 grams. The present invention also relates to a multi-compartment device comprising: at least one composition A in compressed form comprising at least one persulfate. a composition B in compressed form comprising at least one compound (i) different from the persulfates and optionally - at least one aqueous composition C, said compositions being packaged in separate compartments.

Unless otherwise indicated, the ranges of the ranges of values which are given within the scope of the present invention are included in these ranges.

In what follows or what precedes the expression "at least one" is equivalent to the expression "one or more". The term "between" means terminals included. Persulfates The persulfate salt (s) present in the composition A according to the invention may for example be chosen from sodium, potassium and ammonium persulfates, and mixtures thereof. The concentration of persulfates in the composition A according to the invention is generally between 10 and 80% by weight, preferably between 20 and 65% by weight and better still between 40 and 60% by weight of the total weight of the composition A. The composition B comprises at least one compound (i) different from the persulfate present in the composition A. This compound may be chosen in particular from alkaline agents, chemical oxidizing agents other than persulfates, conditioning agents, surfactants other than the surfactants. conditioning, and their mixtures.

Alkaline agent According to one embodiment, the composition B used in the process according to the invention comprises at least one alkaline agent. The alkaline agent (s) may, for example, be chosen from ammonium dihydrogen phosphate or tribasic ammonium phosphate, water-soluble silicates such as alkali metal or alkaline-earth metal silicates, such as sodium disilicate, sodium metasilicate, di-phosphates and the like. basic or tribasic alkali or alkaline earth metals or alkali or alkaline earth metal carbonates, such as lithium, sodium, potassium, magnesium, calcium, barium, and mixtures thereof. Preferably, the alkaline agent (s) are chosen from water-soluble silicates such as alkali metal or alkaline-earth metal silicates, basic or tribasic alkali metal or alkaline earth metal phosphates, alkali or alkaline-earth metal carbonates, and their mixtures.

In the context of the invention, the term "water-soluble silicate" means a silicate which has a solubility in water at 25 ° C. of greater than 0.5%, preferably greater than 1% by weight. These water-soluble silicates differ from aluminum silicates and their derivatives, especially clays, such as mixed silicates of natural or synthetic origin which are insoluble in water. When present in the composition B according to the invention, the concentration of alkaline agents may range from 0.1 to 40% by weight, and preferably from 0.5 to 30% by weight, and more preferably from 1 to 25% by weight of the total weight of the composition B. Conditioning agent The conditioning agent may be chosen from the group comprising non-silicone cationic polymers, silicones, in particular organosiloxanes, non-silicone fatty substances, and mixtures of these compounds. The conditioning agent may be present in the composition B in a content ranging from 0.01 to 30% by weight, more particularly from 0.05 to 20% by weight, better still from 0.1 to 10% by dry matter. relative to the weight of the composition B. Non-Silicone Cationic Polymers "Non-silicone cationic polymer" means a polymer having no silicon atom in its structure, positively charged when contained in the composition according to the invention. 'invention. This polymer may carry one or more positive permanent charges or contain one or more cationizable functions within the composition according to the invention. The cationic polymer or polymers which may be used as conditioning agents according to the present invention are preferably chosen from polymers containing primary, secondary, tertiary and / or quaternary amine groups which are part of the polymer chain or directly connected thereto, and having a molecular weight of from 500 to about 5,000,000 and preferably from 1,000 to 3,000,000. When the conditioning agent is a cationic polymer, it is preferably selected from those containing units having primary amine groups, secondary, tertiary and / or quaternary may be part of the main polymer chain, or be carried by a side substituent directly connected thereto. Among the cationic polymers, mention may be made more particularly of the polyamine, polyaminoamide and quaternary polyammonium type polymers.

These are known products. They are for example described in French Patent Nos. 2,505,348 and 2,542,997. Among these polymers, mention may be made of: (1) homopolymers or copolymers derived from acrylic or methacrylic esters or amides and comprising at least one of units of the following formulas: ## STR5 ## wherein R 4 R3 and R4, which may be identical or different, represent hydrogen or an alkyl group having from 1 to 6 carbon atoms and preferably methyl or ethyl; R5, which may be identical or different, denote a hydrogen atom or a CH3 radical; A, which may be identical or different, represent a linear or branched alkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms or a hydroxyalkyl group of 1 to 4 carbon atoms; R6, R7, R8, which may be identical or different, represent an alkyl group having from 1 to 18 carbon atoms or a benzyl radical and preferably an alkyl group having from 1 to 6 carbon atoms; X denotes an anion derived from a mineral or organic acid such as a methosulphate anion or a halide such as chloride or bromide. The copolymers of the family (1) may also contain one or more units derived from comonomers which may be chosen from the family of acrylamides, methacrylamides, acrylamide diacetones, acrylamides and methacrylamides substituted on the nitrogen by lower alkyls (C1-C4). , acrylic or methacrylic acids or their esters, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, vinyl esters. Thus, among these copolymers of family (1), mention may be made of: - copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with dimethyl sulphate or with a dimethyl holognide, - the copolymers of acrylamide and of methacryloyloxyethyltrimethylammonium chloride described for example in the patent application EP-A-080976, the copolymer of acrylamide and methacryloyloxyethyltrimethylammonium methosulphate, the vinylpyrrolidone / dialkylaminoalkyl acrylate or methacrylate copolymers quaternized or otherwise. These polymers are described in detail in French Pat. Nos. 2,077,143 and 2,393,573, dimethylaminoethyl methacrylate / vinylcaprolactam / vinylpyrrolidone terpolymers, vinylpyrrolidone / methacrylamidopropyl dimethylamine copolymers. and quaternized dimethylaminopropyl vinylpyrrolidone / methacrylamide copolymers, and crosslinked polymers of methacryloyloxyalkyl (C1-C4) trialkyl (C1-C4) ammonium salts, such as the polymers obtained by homopolymerization of dimethylaminoethyl methacrylate quaternized with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethyl methacrylate quaternized by methyl chloride, the homo or copolymerization being followed by crosslinking with an olefinically unsaturated compound, in particular methylenebisacrylamide. (2) polymers consisting of piperazinyl units and straight or branched chain alkylene or hydroxyalkylene divalent radicals, optionally interrupted by oxygen, sulfur, nitrogen or aromatic or heterocyclic rings, as well as oxidation and / or quaternization of these polymers. Such polymers are in particular described in French Patents 2,162,025 and 2,280,361; (3) water-soluble polyaminoamides prepared in particular by polycondensation of an acidic compound with a polyamine; these polyaminoamides may be crosslinked by an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bishalohydrin, a bis-azetidinium, a bis-haloacyldiamine, an alkyl bis-halide or a oligomer resulting from the reaction of a bifunctional compound reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, an alkyl bis-halide, a epilhalohydrin, a diepoxide or bis-unsaturated derivative; the crosslinking agent being used in proportions ranging from 0.025 to 0.35 moles per amine group of the polymaoamide; these polyaminoamides can be alkylated or if they contain one or more tertiary amine functions, quaternized. Such polymers are described in particular in French Patents 2,252,840 and 2,368,508; (4) polyamino amide derivatives resulting from the condensation of polyalkylene polyamines with polycarboxylic acids followed by alkylation with difunctional agents. Mention may be made, for example, of adipic acid-diacoylaminohydroxyalkyldialoylene triamine polymers in which the alkyl radical contains from 1 to 4 carbon atoms and preferably denotes methyl, ethyl or propyl. Such polymers are described in particular in French Patent 1,583,363. Among these derivatives, mention may be made more particularly of adipic acid / dimethylaminohydroxypropyl / diethylene triamine polymers. (5) polymers obtained by reacting a polyalkylene polyamine comprising two primary amine groups and at least one secondary amine group with a dicarboxylic acid chosen from diglycolic acid and saturated aliphatic dicarboxylic acids having from 3 to 8 carbon atoms. The molar ratio between the polyalkylene polylamine and the dicarboxylic acid being between 0.8: 1 and 1.4: 1; the polyaminoamide resulting therefrom being reacted with epichlorohydrin in a molar ratio of epichlorohydrin relative to the secondary amine group of the polyaminoamide of between 0.5: 1 and 1.8: 1. Such polymers are described in particular in the patents US 3,227,615 and 2,961,347. (6) cyclopolymers of alkyl diallyl amine or dialkyl diallyl ammonium, such as homopolymers or copolymers comprising, as main constituent of the chain, units corresponding to formulas (V) or (VI): (CH) k - (CH 2) t CR12 C (R12) -CH2-OH 2 CH2 (V) N + -Y-R1 / R11 / (Cl2) k - (CH2) t CR12C (R12) -CH2-CH2CH2 (VI) where k and t are 0 or 1, the sum k + t being equal to 1; R12 denotes a hydrogen atom or a methyl radical; R10 and R11, independently of each other, denote an alkyl group having 1 to 6 carbon atoms, a hydroxyalkyl group in which the alkyl group preferably has 1 to 5 carbon atoms, a lower amidoalkyl group (C1 -04) or R10 and R11 may designate, together with the nitrogen atom to which they are attached, heterocyclic groups, such as piperidinyl or morpholinyl; Y- is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate, phosphate. These polymers are described in particular in French Patent 2,080,759 and in its certificate of addition 2,190,406. R 10 and R 11, independently of one another, preferably denote an alkyl group having 1 to 4 carbon atoms and more particularly 1 of the polymers defined above, there may be mentioned more particularly the homopolymer of dimethyldiallylammonium and copolymers of diallyldimethylammonium chloride and acrylamide. (7) the quaternary diammonium polymer containing repeating units corresponding to the formula: R 13 R 15 N + -A 1 -N + -X I R 14 formula (VII) in which: R 13, R 14, R 15 and R 16, identical or different, represent radicals aliphatic, alicyclic, or arylaliphatic radicals containing from 1 to 20 carbon atoms or lower hydroxyalkylaliphatic radicals, or R13, R14, R15 and R16, together or separately, together with the nitrogen atoms to which they are attached, form heterocycles containing, where appropriate, a second heteroatom other than nitrogen or R13, R14, R15 and R16 represent a linear or branched C1-C6 alkyl radical substituted with a R16 X-nitrile, ester, acyl, amide or -00-0-R17- D or -CO-NH-R17-D wherein R17 is alkylene and D is a quaternary ammonium group; Al and B1 represent polymethylene groups containing from 2 to 20 carbon atoms which may be linear or branched, saturated or unsaturated, and which may contain, bound to or intercalated in the main chain, one or more aromatic rings, or one or more atoms of oxygen, sulfur or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups, and X- denotes an anion derived from a mineral or organic acid; Al, R13 and R15 can form with the two nitrogen atoms to which they are attached a piperazine ring; furthermore, if Al denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B1 may also denote a (CH2) n -CO-D-OC- (CH2) p-n group and p are integers varying from 2 at about 20 in which D denotes: a) a glycol residue of formula: -O-Z-O-, where Z denotes a linear or branched hydrocarbon radical or a group corresponding to one of the following formulas: CH 2 -O) x-CH 2 -CH 2 - - [CH 2 -CH (CH 3) -O] y -CH 2 -CH (CH 3) - where x and y denote an integer of 1 to 4, representing a defined degree of polymerization and single or any number from 1 to 4 representing an average degree of polymerization; b) a bis-secondary diamine residue such as a piperazine derivative; c) a bis-primary diamine residue of formula: -NH-Y-NH-, where Y denotes a linear or branched hydrocarbon radical, or alternatively the divalent radical -CH 2 -CH 2 -S-S-CH 2 -CH 2 -; d) a ureylene group of formula: -NH-CO-NH-; Preferably, X- is an anion such as chloride or bromide.

These polymers have a number-average molecular weight generally of between 1000 and 100,000. Polymers of this type are described, for example, in French patents 2,320,330, 2,270,846, 2,316,271, 2,336,434 and 2,413,907 and patents. US 2,273,780, 2,375,853, 2,388,614, 2,454,547, 3,206,462, 2,261,002, 2,271,378, 3,874,870, 4,001,432, 3,929,990, 3,966,904, 4,005,193, 4,025. .617, 4,025,627, 4,025,653, 4,026,945 and 4,027,020. More particularly, the polymers which consist of repeating units having the formula: R 18 R 20 --N (CH 2), - (CH 2), - (VIII) X - R 19 X - R 21 in which R 18, R 19, R 20 and R21, which are identical or different, denote an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, r and s are integers ranging from 2 to approximately 20 and X- is an anion derived from an inorganic or organic acid .

A particularly preferred compound of formula (VIII) is that for which R18, R19, R20 and R21, represent a methyl radical and r = 3, s = 6 and X = Cl, called Hexadimethrine chloride according to the nomenclature I NCI (CTFA). (8) quaternary polyammonium polymers consisting of units of formula (IX): ## STR2 ## Wherein R22, R23, R24 and R25, which may be identical or different, represent a hydrogen atom or a methyl, ethyl or propyl radical, and the formula: ## STR5 ## wherein R22, R23, R24 and R25 are identical or different; -hydroxyethyl, 13-hydroxypropyl or -CH2CH2 (OCH2CH2) pOH, where p is 0 or an integer of 1 to 6, provided that R22, R23, R24 and R25 do not simultaneously represent a hydrogen atom , t and u, identical or different, are integers between 1 and 6, v is 0 or an integer between 1 and 34, X- denotes an anion such as a halide, A denotes a radical of a dihalide or is preferably -CH2-CH2-O-CH2-CH2-. Such compounds are described in particular in patent application EP-A-122 324.

For example, the products "Mirapol® A 15", "Mirapol® AD1", "Mirapol® AZ1" and "Mirapol® 175" sold by the company Miranol can be mentioned among them. (9) Quaternary polymers of vinylpyrrolidone and vinylimidazole. (10) Cationic polysaccharides, in particular cationic celluloses and cationic galactomannan gums. Among the cationic polysaccharides, mention may be made more particularly of cellulose ether derivatives containing quaternary ammonium groups, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer and cationic galactomannan gums. The cellulose ether derivatives containing quaternary ammonium groups described in French Patent 1,492,597. These polymers are also defined in the CTFA dictionary as quaternary amonium of hydroxyethylcellulose reacted with an epoxide substituted with a trimethylammonium group. Cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, are described in particular in US Pat. No. 4 131 576, such as hydroxyalkyl celluloses, such as hydroxymethyl, hydroxyethyl or hydroxypropyl celluloses grafted in particular with a salt of methacryloylethyl trimethylammonium, methacrylmidopropyltrimethylammonium, dimethyl-diallylammonium. The cationic galactomannan gums are described more particularly in US Pat. Nos. 3,589,578 and 4,031,307, in particular guar gums containing cationic trialkylammonium groups. For example, guar gums modified with a salt (eg chloride) of 2,3-epoxypropyltrimethylammonium are used.

Other cationic polymers that can be used in the context of the invention are cationic proteins or hydrolysates of cationic proteins, polyalkyleneimines, in particular polyethyleneimines, polymers containing vinylpyridine or vinylpyridinium units, condensates of polyamines and of epichlorohydrin, quaternary polyureylenes and chitin derivatives. The proteins or hydrolysates of cationic proteins are in particular chemically modified polypeptides carrying at the end of the chain, or grafted onto it, quaternary ammonium groups. Their molecular weight may vary for example from 1500 to 10000, and in particular from 2000 to 5000 approximately. Among these compounds, there may be mentioned in particular: Preferably these polypeptides are of plant origin. There may be mentioned in particular: the hydrolysates of wheat protein, soy protein or rice modified with cocodimonium hydroxypropyl groups. hydrolysates of wheat, soy, jojoba, oat or rice protein modified with hydroxypropyl trimonium groups. hydrolysates of wheat, soy or jojoba protein modified with laurdimonium hydroxypropyl groups. the hydrolysates of jojoba protein, soy protein or rice modified with steardimonium hydroxypropyl groups. Of all the cationic polymers which may be used in the context of the present invention, it is preferred to use cationic cyclopolymers, in particular homopolymers or copolymers of dimethyldiallylammonium chloride, quaternary vinylpyrrolidone and vinylimidazole polymers, and cationic polysaccharides. and their mixtures. The non-silicone cationic polymer or polymers may be present in a content ranging from 0.01 to 10% by weight, more particularly from 0.05 to 5% by weight of solids, relative to the weight of the composition B. Silicones Silicones that can be used as conditioning agents in accordance with the present invention include, but are not limited to: I. Volatile silicones: These have a boiling point of between 60 ° C and 260 ° C. Among this type of silicones, mention is made of: (i) cyclic silicones containing from 3 to 7 silicon atoms, and preferably from 4 to 5. It is, for example, octamethylcyclo-tetrasiloxane, decamethylcyclopentasiloxane, and as their mixtures. Mention may also be made of cyclopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as the cyclocopolymer dimethylsiloxane / methyloctylsiloxane; (ii) linear volatile silicones having 2 to 9 silicon atoms and having a viscosity of less than or equal to 5.10-6 m2 / s at 25 ° C. This type of product is described in the article by TODD & BYERS "Volatile silicone fluids for cosmetics", Cosmetics and Toiletries, Vol. 91, Jan 76, pages 27 32. He. Non-volatile silicones They consist mainly of polyalkylsiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes and organomodified polysiloxanes, as well as their mixtures. They can be in the form of oils, gums and resins. Among the polyalkylsiloxanes, mention may be made of linear polydimethylsiloxanes having a viscosity of greater than 5.10-6 m 2 / s, and preferably less than 2.6 m 2 / s, ie: - with trimethylsilyl end groups, - with trihydroxysilyl end groups. In this class of polyalkylsiloxanes may also be mentioned polyalkyl (C1-20) siloxanes. Among the polyalkylarylsiloxanes, mention may be made of linear and / or branched polydimethylphenylsiloxanes, polydimethyldiphenylsiloxanes, with a viscosity of 10-5 to 5 × 10 -2 m 2 / s. The silicone gums according to the present invention are polydiorganosiloxanes having a high average molecular weight. between 200 000 and 1 000 000, used alone or as a mixture in a solvent chosen from volatile silicones, polydimethylsiloxane (PDMS) oils, polyphenylmethylsiloxane (PPMS) oils, isoparaffins, methylene chloride, pentane, dodecane, tridecane, tetradecane or mixtures thereof.

For example, compounds having the following structures are mentioned: poly (dimethylsiloxane) gums (methylvinylsiloxane), poly (dimethylsiloxane) gums (diphenylsiloxane), poly ([(dihydrogen dimethylsiloxane) / (divinylsiloxane)] gums, poly (dimethylsiloxane) gums) / (phenylmethylsiloxane)], poly [(dimethylsiloxane) / (diphenylsiloxane) / (methylvinylsiloxane)] gums. Mention may also be made, for example, without limitation, of the following mixtures: 1) mixtures formed from a hydroxyl end-of-the-chain polydimethylsiloxane and a cyclic polydimethylsiloxane; 2) mixtures formed from a polydimethylsiloxane gum with a cyclic silicone; 3) blends of two PDMSs of different viscosities, in particular a PDMS gum and a PDMS oil.

The organopolysiloxane resins that can be used in accordance with the invention are crosslinked siloxane systems containing the units: R 2 SiO 2/2, RSiO 3/2 and SiO 4/2 in which R represents a hydrocarbon group having 1 to 6 carbon atoms or a phenyl group. . Among these products, those that are particularly preferred are those in which R denotes a lower alkyl radical or a phenyl radical. Among these resins, mention may be made of dimethyl / trimethylpolysiloxanes. The organomodified silicones, according to the present invention, are silicones as defined above, comprising in their general structure, one or more organofunctional groups directly attached to the siloxane chain or attached via a hydrocarbon radical. Mention may be made, for example, of silicones comprising: a) perfluorinated groups such as trifluoroalkyls; b) hydroxyacylamino groups such as, for example, those described in the patent application EP 0 342 834; (c) thiol groups; (d) non-quaternized amino groups; e) carboxylate groups; f) hydroxyl groups, such as hydroxy-functional polyorganosiloxanes at 02-018, described for example in patent application FR 85 16334 g) alkoxylated groups; h) (C 8 -C 22) alkyl (C 2 -C 18) acyloxy groups, for example the polyorganopolysiloxanes described in patent application FR 88 17433, i) quaternary ammonium groups; j) amphoteric or betainic groups; k) bisulfite groups; 1) polyethyleneoxy and / or polypropyleneoxy groups optionally comprising Ⓒ groups, such as the products known as dimethicone copolyol and alkyl (012) methicone copolyol; using silicones comprising a polysiloxane portion and a portion consisting of a non-silicone organic chain, one of the two portions constituting the main chain of the polymer and the other being grafted onto said main chain, these polymers are for example described in patent applications EP-A-412,704, EP-A-412,707, EP-A-640,105 and VVO 95/00578, EP-A-582,152 and VVO 93/23009 and US Patents 4,693,935, US 4,728,571 and These polymers are preferably anionic or nonionic, and such polymers are, for example, the copolymers that can be obtained by radical polymerization from the monomer mixture consisting of: a) 50 to 90% by weight; tert-butyl acrylate weight; b) 0 to 40% by weight of acrylic acid; c) 5 to 40% by weight of silicone macromer of formula: ## STR2 ## wherein CH 2 CH 3 CH 3 SiO 2 Si (CH 2) 3 CH 3 CH 3 CH 3 v being a number from 5 to 700; the percentages by weight being calculated with respect to the total weight of the monomers. Other examples of grafted silicone polymers are, in particular, polydimethylsiloxanes (PDMS) on which are grafted, via a thiopropylene type connection link, poly (meth) acrylic acid and poly type mixed polymer units. alkyl (meth) acrylate and polydimethylsiloxanes (PDMS) on which are grafted, via a thiopropylene type connecting link, polymeric units of the poly (meth) acrylate isobutyl type. According to the invention, all the silicones can also be used in the form of emulsions, nanoemulsions or microemulsions. The polyorganosiloxanes that are particularly preferred according to the invention are: non-volatile silicones chosen from the family of polydialkylsiloxanes containing trimethylsilyl end groups, such as oils having a viscosity of between 0.2 and 2.5 m 2 / s at 25 ° C. polydialkylsiloxanes with dimethylsilanol end groups such as dimethiconol or polyalkylarylsiloxanes; polysiloxanes containing amino groups, such as amodimethicones or trimethylsilylamodimethicone; The viscosities of the silicones can in particular be determined by ASTM D445-97 (viscometry).

The silicone content may range from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight relative to the weight of composition B, and even more preferably from 1 to 10% by weight.

Non-silicone fatty substance Composition B according to the invention may comprise at least one non-silicone fatty substance as a conditioning agent.

By "fatty substance" is meant an organic compound which is insoluble in water at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg) (solubility of less than 5% and preferably of 1%, even more preferentially at 0.1%). By "non-silicone fatty substance" is meant a fatty substance containing no silicon atom (Si). They have in their structure at least one hydrocarbon chain containing at least 6 carbon atoms. In addition, the fatty substances are generally soluble in organic solvents under the same conditions of temperature and pressure, such as, for example, chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran ( THF), petrolatum oil or decamethylcyclopentasiloxane. The fatty substances of the invention do not contain salified carboxylic acid groups. In addition, the fatty substances of the invention are not (poly) oxyalkylenated ethers (in particular at 02-03) or (poly) glycerolated ethers. According to one embodiment, use is made of liquid fatty substances at room temperature (25 ° C.) and at atmospheric pressure (760 mmHg) or oils. More particularly, the fatty substances are chosen from among the hydrocarbons at 06-016, hydrocarbons with more than 16 carbon atoms, non-silicone oils of animal origin, vegetable oils of the triglyceride type, synthetic triglycerides, fluorinated oils, fatty alcohols, fatty acid esters and / or alcohol esters different fatty acids from triglycerides and vegetable waxes, non-silicone waxes, and mixtures thereof. It is recalled that the alcohols, esters and fatty acids more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising 6 to 30, more preferably 8 to 30 carbon atoms, optionally substituted, in particular by one or several hydroxyl groups (in particular 1 to 4). If unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or otherwise.

With regard to the hydrocarbons at 06-016, the latter are linear, branched, optionally cyclic and preferably alkanes. By way of example, mention may be made of hexane, dodecane and isoparaffins, such as isohexadecane and isodecane. As hydrocarbon oils of animal origin, mention may be made of perhydrosqualene.

Triglyceride oils of vegetable or synthetic origin are preferably chosen from liquid triglycerides of fatty acids containing from 6 to 30 carbon atoms, for example triglycerides of heptanoic or octanoic acids or, for example, sunflower oil or corn oil. soybean, squash, grape seed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor oil, avocado, caprylic / capric acid triglycerides, jojoba oil, shea butter oil; The linear or branched hydrocarbons, of mineral or synthetic origin, of more than 16 carbon atoms, are preferably chosen from paraffin oils, petroleum jelly, vaseline oil, polydecenes, and hydrogenated polyisobutene. In particular, the polydecenes of the formula Ci on-1 [(20n) + 2] in which n varies from 3 to 9 and preferably from 3 to 7, are preferred. Among these compounds, it is preferred according to the invention for which the formula, n varies from 3 to 7. With regard to the alkanes at 06-016, the latter are linear, branched, possibly cyclic. By way of example, mention may be made of hexane, dodecane and isoparaffins, such as isohexadecane and isodecane. As oils of animal, vegetable, mineral or synthetic origin, which can be used in the composition of the invention, mention may be made, for example, of: the fluorinated oils may be chosen from perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane or bromoperfluorooctyl; nonafluoro-methoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine. The fatty alcohols that are suitable for carrying out the invention are more particularly chosen from linear or branched saturated or unsaturated alcohols containing from 6 to 30 carbon atoms, preferably from 8 to 30 carbon atoms. For example, cetyl alcohol, stearyl alcohol and their mixture (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol or linoleic alcohol may be mentioned; . With regard to fatty acid esters and / or fatty alcohols, advantageously different from the triglycerides mentioned previously; mention may be made in particular of saturated or unsaturated, linear or branched C 1 -C 20 aliphatic or monohydric acid esters and saturated or unsaturated aliphatic mono- or polyalcohols, linear or branched in Cl-026, the total number of carbon of the esters being greater or equal to 6, more preferably greater than or equal to 10.

Among the monoesters, mention may be made of dihydroabiethyl behenate; octyldodecyl behenate; isoketyl behenate; cetyl lactate; alkyl lactate at 0-12-015; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; (iso) stearyl octanoate; isocetyl octanoate; octyl octanoate; cetyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl ricinoleate acetyl; myristyl stearate; octyl isononanoate; 2-ethylhexyl isononate; octyl palmitate; octyl pelargonate; octyl stearate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate; , styryl, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate.

Still within the context of this variant, it is also possible to use the esters of di or tricarboxylic acids at 04-022 and of alcohols at Cl-022 and the esters of mono- or di-tricarboxylic acids and di-, tri-alcohols. tetra or pentahydroxy in 02-026. These include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-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; and polyethylene glycol distearates. Among the esters mentioned above, it is preferred to use ethyl, isopropyl, myristyl, cetyl, stearyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, sodium myristates and the like. alkyls such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate and isononyl isononanate, cetyl octanoate. The composition may also comprise, as fatty ester, esters and diesters of 6-030 fatty acid sugars, preferably 0-12-022. It is recalled that "sugar" is understood to mean oxygenated hydrocarbon compounds which have several alcohol functions, with or without an aldehyde or ketone function, and which contain at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides. Suitable sugars include, for example, sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives. especially alkyls, such as methyl derivatives such as methylglucose. The esters of sugars and of fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described above and of linear or branched, saturated, linear or branched, 0-12-030 fatty acids, preferably or unsaturated. If unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or otherwise. The esters according to this variant may also be chosen from mono-, di-, tri- and tetraesters, polyesters and mixtures thereof. These esters may be for example oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonates, or mixtures thereof, such as, in particular, the mixed oleo-palmitate, oleostearate and palmito-stearate esters. More particularly, mono- and di-esters are used, and in particular mono- or dioleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, sucrose, glucose or methylglucose.

By way of example, mention may be made of the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

Mention may also be made, by way of examples, of esters or mixtures of fatty acid sugar esters: sucrose palmito-stearates formed of 73% of monoester and 27% of di- and tri-ester, of 61% monoester and 39% di-, tri- and tetraester, 52% monoester and 48% di-, tri- and tetraester, 45% monoester and 55% di-, tri- and tetraester, 39% monoester and 61% di-, tri-, and tetraester, and sucrose mono-laurate; sucrose behenate formed from 20% monoester and 80% ditester-polyester; sucrose mono-di-palmitostearate. The non-silicone wax or waxes are chosen in particular from carnauba wax, candelilla wax, and alfa wax, paraffin wax, ozokerite, vegetable waxes such as olive wax or rice wax. hydrogenated jojoba wax or absolute flower waxes such as blackcurrant essential wax, animal waxes such as beeswax, or modified beeswaxes (cerabellina); other waxes or waxy raw materials that can be used according to the invention are, in particular, marine waxes, such as the one sold by SOPHIM under the reference M82, and polyethylene or polyolefin waxes in general.

Preferably, the fatty substance is chosen from the group formed by the polydecenes of formula Ci on1-1 [(20n) +2] in which n varies from 3 to 9 and preferably from 3 to 7, the esters of fatty alcohols or fatty acids, paraffin oils, triglycerides, liquid fatty alcohols and preferably polydecenes and esters of fatty alcohols or fatty acids and mixtures thereof. According to one particular embodiment of the invention, the content of non-silicone fatty substance varies from 0.1 to 30% by weight, preferably from 0.5 to 20% by weight relative to the weight of composition B, and more preferably from 1 to 10% by weight. Chemical oxidizing agent "Chemical oxidizing agent" means any oxidizing agent other than oxygen in the air.

The oxidizing agents that can be used in composition B are different from the persulfate or persulfates present in composition A. According to one embodiment, composition B is free of persulfates. The oxidizing agent present in composition B is preferably chosen from compounds which liberate hydrogen peroxide by hydrolysis, such as - urea peroxide, - polymeric complexes capable of releasing hydrogen peroxide, such as complexes polyvinylpyrrolidone / H 2 O 2 and other polymer complexes described in US 5,008,093; US 3,376,110; U55.183.901; - the metal peroxides generating in water hydrogen peroxide such as calcium peroxide, magnesium peroxide; - perborates; percarbonates, and mixtures thereof.

The oxidizing agent (s) may represent from 0.5 to 70% by weight, preferably from 1 to 60% by weight, and better still from 5 to 20% of the total weight of composition B.

Surfactants The surfactant (s) may be chosen, alone or as mixtures, from anionic, amphoteric, nonionic, zwitterionic and cationic surfactants, in particular from anionic and / or nonionic surfactants.

The surfactants that are suitable for the implementation of the present invention are in particular the following: Among the nonionic surfactants, mention may be made of alcohols, alpha-diols and alkylphenols, each of these compounds being polyethoxylated and / or polypropoxylated, and having at least one less a hydrocarbon chain comprising, for example, from 8 to 30 carbon atoms, preferably from 8 to 18 carbon atoms, the number of ethylene oxide and / or propylene oxide groups that can range from 1 to 200.0n in particular can mention among these compounds condensates of ethylene oxide and / or propylene on fatty alcohols It is also possible to use as copolymers of ethylene oxide and propylene oxide as nonionic surfactants; polyethoxylated fatty amides preferably having from 2 to 30 moles of ethylene oxide; oxyethylenated sorbitan fatty acid esters having from 2 to 30 moles of ethylene oxide; sucrose fatty acid esters, polyethylene glycol fatty acid esters; vegetable oils oxyethylenated, saturated or not; alkylpolyglycosides, N-alkylglucamine derivatives, oxyethylenated and / or oxypropylenated silicones.

The term "anionic surfactant" is understood to mean a surfactant comprising as ionic or ionizable groups only anionic groups. These anionic groups are preferably chosen from the groups CO2H, 002-, SO3H, SO3-, OSO3H, OSO3-, O2PO2H, O2PO2H-, O2PO2-.

The anionic surfactant (s) that may be used in the compositions of the invention are especially chosen from alkyl sulphates, alkyl ether sulphates, alkyl amido ether sulphates, alkylaryl polyether sulphates, monoglyceride sulphates, alkyl sulphonates, alkyl amide sulphonates, alkyl aryl sulphonates, alpha-olefin-sulfonates, paraffin-sulfonates, alkylsulfosuccinates, alkylethersulfosuccinates, alkylamidesulfosuccinates, alkylsulfoacetates, acylsarcosinates, acylglutamates, alkylsulfosuccinamates, acylisethionates and N-acyltaurates, alkyl monoester salts and polyglycoside-polycarboxylic acids, acyllactylates, D-galactoside-uronic acid salts, alkyl ether-carboxylic acid salts, alkyl aryl ether-carboxylic acid salts, alkyl amidoether carboxylic acid salts; or the non-salified forms of all these compounds, the alkyl and acyl groups of all these compounds having from 6 to 24 carbon atoms and the aryl group denoting a phenyl group.

Some of these compounds can be oxyethylenated and then preferably comprise from 1 to 50 ethylene oxide units. The salts of O-alkyl monoesters and of polyglycoside-polycarboxylic acids may be chosen from among the alkyl polyglycoside-citrates at 06-24, the polyglycoside-alkyl tartrates at 06-24 and the polyglycoside-sulphosuccinates of alkyl at 06-024.

When the agent or the anionic surfactants are in the salt form, they may be chosen from alkali metal salts such as the sodium or potassium salt and preferably sodium salt, ammonium salts, amine and especially aminoalcohol salts, and alkaline earth metal salts such as magnesium salt. By way of example of aminoalcohol salts, mention may be made in particular of the salts of mono-, di- and triethanolamine, the salts of mono-, di- or tri-isopropanolamine, the salts of 2-amino-2-methyl 1-propanol, 2-amino-2-methyl-1,3-propanediol and tris (hydroxymethyl) amino methane.

The alkali metal or alkaline earth metal salts and in particular the sodium or magnesium salts are preferably used. Alkyl (C6-24) sulphates, alkyl (C6-24) ether sulphates, optionally oxyethylenated, comprising from 2 to 50 ethylene oxide units, and mixtures thereof, in particular in the form of alkali metal or alkaline salts, are preferably used. -terrous, ammonium, aminoalcohol. More preferably, the anionic surfactant (s) are chosen from (C 10-20) alkyl sulphates in the form of alkali metal or alkaline earth metal salts, and in particular sodium lauryl sulphate and sodium cetostearyl sulphate, and mixtures thereof.

The amphoteric or zwitterionic surfactant (s) that may be used in the present invention may be in particular derivatives of secondary or tertiary aliphatic amines, optionally quaternized, in which the aliphatic group is a linear or branched chain containing from 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. Mention may in particular be made of (C 8 -C 20) alkyl betaines, sulfobetaines, (C 8 -C 20) alkylamido (C 3 -C 8) alkylbenzenes or (C 8 -C 20) alkylamido (C 6 -C 8) alkyl radicals. ) sulfobetaines. Among the derivatives of secondary or tertiary aliphatic amines optionally quaternized utilizable, as defined above, there may also be mentioned compounds of respective structures (XI) and (XII): Ra-CONHCH2CH2-N + (Rb) (Rc) (CH2000-) (XI) wherein: Ra represents an alkyl or alkenyl group of 0-10-030 derived from an acid Ra-000H preferably present in hydrolyzed coconut oil, a heptyl, nonyl or undecyl group, Rb represents a beta-hydroxyethyl group, and Rc represents a carboxymethyl group; and Ra'-CONHCH2CH2-N (B) (B ') (XII) wherein: B is -CH2CH2OX', B 'is - (CH2) z-Y', where z = 1 or 2, X 'is the group -CH2-000H, CH2-000Z ', -CH2CH2-000H, -CH2CH2-000Z', or a hydrogen atom, Y 'represents -COOH, -COOZ', the group -CH2-CHOH-SO3H or -CH2- CHOH-SO 3 Z ', Z' represents an ion derived from an alkaline or alkaline earth metal such as sodium, an ammonium ion or an ion derived from an organic amine.

Ra 'represents an alkyl or alkenyl group at 010 -030 of an acid Ra'-COOH, preferably present in coconut oil or in hydrolysed linseed oil, an alkyl group, in particular at 017 and its iso form, a group in 017 unsaturated. These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names cocoamphodiacétate disodium, lauroamphodiacétate disodium, caprylamphodiacétate disodium, capryloamphodiacétate disodium, cocoamphodipropionate disodium, lauroamphodipropionate disodium, caprylamphodipropionate disodium, capryloamphodipropionate disodium, acid lauroamphodipropionic, cocoamphodipropionic acid. It is also possible to use compounds of formula (XIII); Ra "-N (H) -CH (Y") - (CH 2) n C (O) -N (H) - (CH 2) n -N (Rd) (Re) (XIII) in which: Y "represents -C (O) OH, -C (O) OZ ", -CH2-CH (OH) -SO3H or -CH2-CH (OH) -SO3-Z-; Rd and Re, independently of one of the other represent a C 1 -C 4 alkyl or hydroxyalkyl radical; Z 2 represents a cationic counterion derived from an alkaline or alkaline earth metal, such as sodium, an ammonium ion or an ion derived from an amine; organic ; Ra "represents a C 10 -C 30 alkyl or alkenyl group of an acid Ra" -C (O) OH which is preferably present in coconut oil or in hydrolysed linseed oil. n and n ', independently of one another, denote an integer ranging from 1 to 3. It is possible to cite the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoaspartamide and sold by the company CHIMEX under the name name CHIMEXANE HB.

The cationic surfactants that can be used in the process according to the invention are preferably non-silicones. The term "non-silicone cationic surfactant", a surfactant having no silicon atoms in its structure and positively charged when it is contained in the composition according to the invention. This surfactant may carry one or more positive permanent charges or contain one or more cationizable functions within the composition according to the invention. The cationic surfactant or surfactants that can be used as conditioning agents according to the present invention are preferably chosen from primary, secondary or tertiary fatty amines, optionally polyoxyalkylenated, or their salts, quaternary ammonium salts, and mixtures thereof. Fatty amines generally comprise at least one hydrocarbon chain of 08-030. Among the fatty amines that can be used according to the invention, mention may be made, for example, of stearylamidopropyl dimethylamine and distearylamine. As quaternary ammonium salts, mention may be made, for example, of those having the following general formula (XIV): R 8, R 10 R 9 R 11 (XIV) in which the radicals R 8 to R 11, which may be identical or different, represent a linear or branched aliphatic radical containing from 1 to 30 carbon atoms, or an aromatic radical such as aryl or alkylaryl, at least one of the radicals R8 to R11 denoting a radical containing from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms. The aliphatic radicals may comprise heteroatoms such as in particular oxygen, nitrogen, sulfur and halogens. The aliphatic radicals are, for example, chosen from C1-C30 alkyl radicals, C1-30 alkoxy radicals, polyoxyalkylene (C2-C6) radicals, C1-30 alkylamide radicals, (C12-C22) alkyl amidoalkyl (C2-C6) alkyl radicals ( C12-C22) acetate, and C1-30 hydroxyalkyl; X- is an anion chosen from the group of halides, phosphates, acetates, lactates, (C 2 -C 6) alkyl sulphates, alkyl- or alkylaryl-sulphonates. Among the quaternary ammonium salts of formula (XII), tetraalkylammonium chlorides, for example dialkyldimethylammonium or alkyltrimethylammonium chlorides in which the alkyl radical contains from about 12 to 22 carbon atoms, are preferred. carbon, in particular behenyltrimethylammonium, distearyldimethylammonium, cetyltrimethylammonium, benzyldimethylstearylammonium chlorides or, on the other hand, palmitylamidopropyltrimethylammonium chloride or stearamidopropyldimethyl (myristyl acetate) ammonium chloride. the quaternary ammonium salts of imidazoline, for instance those of the following formula (XV): ## STR2 ## in which R12 represents an alkenyl or alkyl radical containing from 8 to 30 carbon atoms, for example derived from tallow fatty acids, R13 represents a hydrogen atom, an alkyl radical at 0104 or an alkenyl or alkyl radical containing from 8 to 30 atoms of carbon, R14 represents a C1-C4 alkyl radical, R15 represents a hydrogen atom, a C1-C4 alkyl radical, X- is an anion chosen from the group of halides, phosphates, acetates, lactates, alkyl sulphates and alkyls. or alkylarylsulphonates. Preferably, R12 and R13 denote a mixture of alkenyl or alkyl radicals containing from 12 to 21 carbon atoms, for example fatty acid derivatives of tallow, R14 denotes a methyl radical, R15 denotes a hydrogen atom; the quaternary di or triammonium salts, in particular of formula (XVI): embedded image R16 -N- (CH2) 3 -N-R21 2X-R18 R20 (XVI) in which R16 denotes an alkyl radical comprising approximately 16 to 30 carbon atoms optionally hydroxylated and / or interrupted by one or more oxygen atoms, R17 is chosen from hydrogen or an alkyl radical containing from 1 to 4 carbon atoms or a group (R16a) (R17a) ( R18a) N- (OH2) 3 - R16a, R17a, R18a, R18, R19, R20 and R21, which are identical or different, are chosen from hydrogen or an alkyl radical containing from 1 to 4 carbon atoms, and X- is an anion selected from the group of halides, acetates, phosphates, nitrates and methylsulfates. Such compounds are, for example, quaternium 89, and quaternium 75, quaternary ammonium salts containing at least one ester function, such as those of the following formula (XVII): R24-C- (OCrH2r) y (CsH2) in which: R22 is chosen from C1-C6 alkyl radicals and C1-C6 hydroxyalkyl or dihydroxyalkyl radicals; R23 is chosen from: - the radical - the radicals R27 which are linear or branched, saturated or unsaturated hydrocarbon radicals in 01-0222, - the hydrogen atom, R25 is chosen from: - the radical - the radicals R29 which are linear or branched, saturated or unsaturated C 1 -C 6 hydrocarbon radicals, - the hydrogen atom, R 24, R 26 and R 28, which are identical or different, are chosen from linear or branched hydrocarbon radicals in 07-021; saturated or unsaturated r, s and t, identical or different, are integers ranging from 2 to 6; y is an integer from 1 to 10; x and z, which are identical or different, are integers ranging from 0 to 10; X- is a simple or complex anion, organic or inorganic; with the proviso that the sum x + y + z is from 1 to 15, that when x is 0 then R23 is R27 and that when z is 0 then R25 is R29.

The alkyl radicals R22 may be linear or branched and more particularly linear. Preferably, R 22 denotes a methyl, ethyl, hydroxyethyl or dihydroxypropyl radical, and more particularly a methyl or ethyl radical.

Advantageously, the sum x + y + z is from 1 to 10. When R 23 is a hydrocarbon radical R 27, it can be long and have from 12 to 22 carbon atoms, or short and have from 1 to 3 carbon atoms. When R 25 is a hydrocarbon R 29 radical, it preferably has 1 to 3 carbon atoms. Advantageously, R24, R26 and R28, which are identical or different, are chosen from linear or branched, saturated or unsaturated, C1-C21 hydrocarbon radicals, and more particularly from linear or branched C1-C21 alkyl and alkenyl radicals. , saturated or unsaturated.

Preferably, x and z, which are identical or different, are equal to 0 or 1. Advantageously, y is equal to 1. Preferably, r, s and t, identical or different, are equal to 2 or 3, and even more particularly are equal to 2 The anion X- is preferably a halide (chloride, bromide or iodide) or an alkyl sulphate, more particularly methyl sulphate. However, it is possible to use methanesulphonate, phosphate, nitrate, tosylate, an anion derived from an organic acid such as acetate or lactate or any other anion compatible with ammonium with an ester function. The X- anion is even more particularly chloride or methylsulfate.

In the composition according to the invention, the ammonium salts of formula (XVII) are used more particularly in which: R 22 denotes a methyl or ethyl radical, x and y are equal to 1; z is 0 or 1; r, s and t are equal to 2; - R23 is chosen from: 0 - the radical - the methyl, ethyl or hydrocarbon radicals at 014-022, - the hydrogen atom; - R25 is chosen from: - the radical - the hydrogen atom; - R24, R26 and R28, which are identical or different, are chosen from linear or branched, saturated or unsaturated hydrocarbon radicals in 013-017, and preferably from linear or branched, saturated or linear 013-017 alkyl and alkenyl radicals; unsaturated. Advantageously, the hydrocarbon radicals are linear. There may be mentioned, for example, the compounds of formula (XVII) such as the salts (especially chloride or methylsulfate) of diacyloxyethyl dimethylammonium, diacyloxyethylhydroxyethylmethylammonium, monoacyloxyethylhydroxyethylmethylammonium, triacyloxyethylmethylammonium, monoacyloxyethylhydroxyethyl dimethylammonium and mixtures thereof. The acyl radicals preferably have from 14 to 18 carbon atoms and come more particularly from a vegetable oil such as palm oil or sunflower oil. When the compound contains more than one acyl radical, the latter may be identical or different. These products are obtained, for example, by direct esterification of triethanolamine, triisopropanolamine, alkyldiethanolamine or alkyldiisopropanolamine, optionally oxyalkylenated, with 0-10-030 fatty acids or with 0-10-030 fatty acid mixtures. plant or animal origin, or by transesterification of their methyl esters. This esterification is followed by quaternization using an alkylating agent such as an alkyl halide (preferably methyl or ethyl), a dialkyl sulphate (preferably methyl or ethyl), methanesulfonate. methyl, para-toluenesulfonate methyl, chlorohydrin glycol or glycerol.

The composition according to the invention may contain, for example, a mixture of quaternary ammonium mono-, di- and triester salts with a majority by weight of diester salts. It is also possible to use the ammonium salts containing at least one ester function described in US-A-4874554 and US-A-4137180.

The particularly preferred cationic surfactant or surfactants that can be used according to the invention are chosen from the compounds of formula (XIV) or of formula (XVII). Among all the cationic surfactants that may be present in the composition according to the invention, it is preferred to choose the salts of cetyl trimethyl ammonium, behenyl trimethyl ammonium, dipalmitoylethyl hydroxyethyl methyl ammonium, distearoylethyl hydroxyethyl methyl ammonium, methyl alkyl (C 9 C19) (C10-C20) alkylamidoethylimidazolium, stearamidopropyldimethylamine, stearamidopropyl dimethylammonium salt, and mixtures thereof. The amounts of surfactants present in the composition B according to the invention may vary from 0.01 to 30% and preferably from 0.1 to 20% by weight and better still from 0.5 to 10% by weight of the total weight. of composition B.

Composition A may also comprise at least one compound chosen from alkaline agents, conditioning agents and surfactants described above. Rheology modifying agents According to one embodiment, at least one of the compositions A or B of the process according to the invention advantageously comprises at least one rheology-modifying agent chosen from hydrophilic thickening agents, the amphiphilic polymers comprising at least one chain hydrophobic, fillers and mixtures thereof. The rheology modifying agent (s) may be present in a content ranging from 0.01% to 30% by weight relative to the total weight of each composition A or B, preferably from 0.1% to 10% by weight.

As examples of hydrophilic thickeners, that is to say not comprising a C6-C30 hydrocarbon fatty chain, which can be used according to the invention, mention may be made in particular of: - thickening polymers of natural origin, such as a) extracts algae, such as alginates (such as alginic acid and sodium alginates), carrageenans, agar agars, and mixtures thereof. As examples of carrageenans, mention may be made of Satiagum UTC3O® and UTC1O® from Degussa; as alginates, mention may be made of sodium alginate sold under the name Kelcosol® by the company ISP; (b) gums, such as xanthan gum, guar gum and their nonionic derivatives (hydroxypropyl guar), gum arabic, konjac gum or mannan, tragacanth gum, ghatti gum, karaya gum, carob gum; agar gum, scleroglucan gums and mixtures thereof; (c) starches, preferably modified starches, such as those derived, for example, from cereals such as wheat, maize or rice, from vegetables such as sweet peas, from tubers such as potatoes or cassava, starches from tapioca; carboxymethyl starch; (d) dextrins, such as dextrin extracted from corn; e) celluloses such as microcrystalline cellulose, amorphous cellulose, and cellulose derivatives, in particular hydroxyalkyl (C 1 -C 6) celluloses and carboxyalkyl (C 1 -C 6) celluloses, in particular crosslinked, mention may be made especially of methylcelluloses, hydroxyalkylcelluloses, ethylhydroxyethylcelluloses, carboxymethylcelluloses; f) pectins, g) chitosan and its derivatives, h) anionic polysaccharides other than starch and cellulose derivatives, in particular of biotechnological origin, such as the anionic polysaccharide having as a repeating unit a tetrasaccharide composed of L-fucose, D-glucose and glucuronic acid, i) soy polysaccharides, and mixtures thereof. synthetic polymers such as crosslinked or non-crosslinked polyvinylpyrrolidone, acrylic acid polymers and their salts, such as crosslinked polyacrylates, polyacrylamides, polymers (in particular homopolymers) of crosslinked or uncrosslinked poly-2-acrylamidopropanesulphonic acids; such as non-cross-linked poly-2-acrylamidopropanesulfonic acid, crosslinked poly-2-acrylamido-2-methylpropane sulfonic acid, free or partially neutralized with ammonia, mixtures of poly-2-acrylamido-2-methylpropane acid sulphonic acid uncrosslinked with hydroxyalkylcellulose ethers or poly (ethylene oxide) as described in US Pat. No. 4,540,510; mixtures of poly (meth) acrylamido-(C 1 -C 4) alkylsulfonic acid, preferably crosslinked, with a crosslinked copolymer of maleic anhydride and a (C 1 -C 6) alkyl vinyl ether, and mixtures thereof. The amount of hydrophilic thickening agents may be between 0.01 and 30% and preferably between 0.1 and 15% by weight and better still between 0.1 and 10% by weight relative to the total weight of each composition A or B. The compositions A and / or B of the process according to the invention may comprise at least one amphiphilic polymer comprising at least one hydrophobic chain.

More specifically, these amphiphilic polymers, if present, are of the nonionic, anionic, cationic or amphoteric type. They are preferably of nonionic, anionic or cationic nature. Said amphiphilic polymers comprise, more particularly, as a hydrophobic chain, a hydrocarbon chain, saturated or unsaturated, aromatic or non-aromatic, linear or branched, at 06-030, optionally confined to one or more oxyalkylenated (oxyethylenated and / or oxypropylenated) units. ). Among the cationic amphiphilic polymers comprising a hydrophobic chain, cationic polyurethanes or cationic copolymers comprising vinyllactam units and in particular vinylpyrrolidone units may be found.

Even more preferably, the amphiphilic polymers comprising a hydrophobic chain are of nonionic or anionic nature. As examples of hydrophobic chain nonionic amphiphilic polymers, there may be mentioned, inter alia, celluloses comprising a hydrophobic chain; hydroxypropyl guars modified with one or more hydrophobic groups; copolymers of vinylpyrrolidone and chain monomers; copolymers of C1-C6 alkyl (meth) acrylates and of amphiphilic monomers having a hydrophobic chain; copolymers of hydrophilic (meth) acrylates and of monomers comprising at least one hydrophobic chain (polyethylene glycol methacrylate / lauryl methacrylate copolymer); aminoplast ether backbone polymers having at least one fatty chain; polyether polyurethanes, linear (block structure), grafted or star-shaped, comprising in their chain, at least one hydrophilic block and at least one hydrophobic block (as described in the article by G. Fonnum, J. Bakke and Fk Hansen-Colloid Polym Sci 271, 380.389 (1993), in particular the polyether polyurethane obtainable by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 150 to 180 moles of diene oxide. ethylene, (ii) a polyoxyethylenated stearyl alcohol comprising 100 moles of ethylene oxide and (iii) a diisocyanate, by way of examples of anionic amphiphilic polymers comprising at least one hydrophobic chain that can be used in the context of the present invention mention may be made of the polymers, which may or may not be crosslinked, comprising at least one hydrophilic unit derived from one or more ethylenically unsaturated monomers carrying a carboxylic acid function, or at least one hydrophobic unit derived from one or more ethylenically unsaturated monomers bearing a hydrophobic side chain, and optionally at least one crosslinking unit derived from one or more polyunsaturated monomers.

Mention may in particular be made of copolymers of (meth) acrylic acid and (meth) acrylates of C 10 -C 30 alkyl, which are crosslinked or non-crosslinked, such as those described in US Pat. No. 3,915,921 and US Pat. No. 4,599,949 or acid copolymers (meth) ) acrylic and allyl ethers of fatty alcohols such as those described in EP 216479. the methacrylic acid / ethyl acrylate / stearyl methacrylate oxyethylenated copolymer (55/35/10); (meth) acrylic acid / ethyl acrylate / behenyl methacrylate oxyethylenated EO copolymer; the crosslinked methacrylic acid / ethyl acrylate / steareth-10 allyl ether copolymer are suitable polymers for carrying out the invention.

If these amphiphilic polymers comprising at least one hydrophobic chain are present, their content represents from 0.01 to 30% by weight, preferably from 0.1 to 10% by weight relative to the weight of each composition A or B. The compositions A and / or B of the process according to the invention may comprise at least one filler. By "fillers" is meant solid particles insoluble in the medium of the composition irrespective of the temperature at which the composition is manufactured. The fillers may be colorless or white, mineral or organic, of any physical form (platelet, spherical or oblong), and of any crystallographic form (for example in sheets, cubic, hexagonal, orthorhombic, etc.). The fillers may be porous or non-porous.

As fillers, mention may be made of mineral fillers such as hydrophobic or hydrophilic silicas, clays other than those mentioned above, ceramic beads, calcium carbonate, titanium oxides, magnesium oxides and aluminum silicates. and their derivatives, in particular clays, such as mixed silicates of natural or synthetic origin, in particular aluminum and magnesium silicates, in particular hydrated silicates, and natural hydrated aluminum silicates, such as bentonite or kaolin, talc, organic fillers such as nylon, microspheres based on isobutane-encapsulated vinylidene chloride / acrylonitrile / methacrylonitrile copolymer, micronized or non-micronized vegetable powder, or rice husk powder, and their mixtures. Mention may also be made, among silicas, of silicas, especially pyrogenic silicas, of hydrophilic nature. The filler content can range from 0.01 to 30% by weight relative to the total weight of each composition A or B, preferably from 0.05 to 20% by weight and better still from 0.1 to 10% by weight. Some of the rheology modifying agents mentioned above may also have a role of assisting the disintegration of the composition A and / or B in compressed form, during its use. Thus, in a particular embodiment, the composition A and / or the composition B of the process according to the invention comprises at least one agent chosen from celluloses and cellulose derivatives, crosslinked polyacrylates, crosslinked polyvinylpyrrolidone, and gums, such as as guar gum, soy polysaccharides, alginates, aluminum silicates and their derivatives, silicas, in particular hydrophilic silicas and mixtures thereof. Compositions A and B in compressed form are anhydrous.

In the context of the present invention, a composition is anhydrous when it has a water content of less than 1% by weight, and preferably less than 0.5% by weight relative to the total weight of the composition. Preferably compositions A and B are free of water.

The compositions A and B according to the present invention may also comprise various additives conventionally used in cosmetics. The compositions A and B according to the present invention may thus comprise lubricants such as alkali or alkaline earth metal stearates, pigments, dyes, additives such as urea, ammonium chloride, antioxidants, penetrating agents, sequestering agents such as EDTA or EDDS, buffers, dispersing agents, film-forming agents, preserving agents, opacifying agents, vitamins, perfumes, anionic polymers, nonionic polymers, amphoteric or zwitterionic agents other than the rheology modifying agents already mentioned, ceramides. Of course, one skilled in the art will take care to choose this or these optional additional compounds in such a way that the advantageous properties intrinsically attached to the composition according to the invention are not, or not substantially, impaired by the addition or additions considered. Compositions A and B in compressed form can be obtained according to methods of compression, compacting (or pelletizing) known as for example direct compression. The compositions A and B may in particular be each provided in the form of a powder which is compacted, for example in a pelletizer, by application of a compressive force. The value of the compressive force can range, for example, from 0.1 to 500 MPa, in particular from 0.2 to 100 MPa. Each of the compositions A and B in compressed form may be single-layer or mutilayer. According to one embodiment, the composition A may comprise at least one layer comprising the bleaching composition comprising at least one persulfate and at least one additional layer which may comprise, for example, bursting agents intended to accelerate the disintegration of the tablet. , alkaline agents as mentioned above, cosmetic active agents and mixtures thereof. As bursting agents mention may in particular be made of celluloses and cellulose derivatives, crosslinked polyacrylates, crosslinked polyvinylpyrrolidone, gums such as guar gum, soy polysaccharides, alginates, aluminum silicates and their derivatives. silicas, especially hydrophilic silicas and mixtures thereof. According to one embodiment, the composition B in compressed form comprises at least one layer comprising the compound (i) different from the persulfates and at least one additional layer comprising at least one bursting agent intended to accelerate the disintegration of the tablet. embodiment, the composition A and / or the composition B in compressed form comprises at least one inclusion, for example in the form of a ball, comprising a powder or a liquid encapsulated in a water-soluble film.

Compositions A and B in compressed form according to the invention may be in ready-to-use unidose form. According to one embodiment, each of the compositions in compressed form can be divisible and comprise on at least one of its faces at least one breakpoint bar indicating a division of the composition into two parts (for example two halves) or several parts to allow a dosage of the amount of composition A or B to be used in the process. The compositions in compressed form can be packaged in individual or grouped form in an airtight, moisture-proof bag.

The bleaching process according to the present invention consists in applying to the keratin fibers the bleaching agent resulting from the mixture of at least the compositions A and B in compressed form as defined above, in the presence of at least one aqueous composition C The compositions A and B in compressed form are generally added to the aqueous composition C just at the moment of use, that is to say just before application to the keratinous fibers. The step of dissolving the composition A in compressed form can take from a few seconds to a few minutes, it can be done with or without agitation.

The subject of the present invention is also a multi-compartment device comprising at least: a composition A in compressed form comprising at least one persulfate; a composition B in compressed form comprising at least one compound (i) different from persulfates and optionally - and at least one aqueous composition C, said compositions being packaged separately.

Composition C The appropriate medium of the aqueous composition C is generally water or a mixture of water and at least one organic solvent to solubilize compounds that are not sufficiently soluble in water. As organic solvent, there may be mentioned, for example, lower alkanols in 0104, such as ethanol and isopropanol; polyols such as propylene glycol, glycerol, dipropylene glycol and polyol ethers such as 2-butoxyethanol, propylene glycol monomethyl ether, and aromatic alcohols such as benzyl alcohol or phenoxyethanol, the like and mixtures thereof. The organic solvents may be present in proportions preferably of between 1 and 40% by weight relative to the total weight of the composition C, and more preferably between 5 and 30% by weight approximately. According to one embodiment, the aqueous composition C comprises at least one chemical oxidizing agent other than the persulfates. The oxidizing agent that can be used in composition C is preferably hydrogen peroxide. The amount of oxidizing agents in the composition C preferably ranges from 0.1 to 20% and preferably from 1 to 15%. relative to the total weight of the composition.

The aqueous composition C may be in any form suitable to allow a good dilution of the compositions A and B in compressed form, preferably in liquid form. The composition C may also contain various additives conventionally used in cosmetics such as those described above. The composition C may comprise at least one of the agents that may be present in the composition B, namely the conditioning agents, the alkaline agents, the rheology modifying agents and the fillers. It may also comprise pigments, dyes, additives such as urea, ammonium chloride, antioxidants, penetrating agents, sequestering agents such as EDTA or EDDS, buffers, acidic agents, dispersing agents, film-forming agents, preserving agents, opacifying agents, vitamins, perfumes, anionic, nonionic, amphoteric or zwitterionic polymers other than the rheology modifying agents already mentioned, ceramides. The invention will be more fully illustrated with the aid of the following nonlimiting examples. Unless otherwise indicated, the quantities indicated are expressed in grams.

EXAMPLES Example 1 The compositions in the following powder form were prepared: Composition A Urea 3 Sodium persulfate 8 Ammonium chloride 4.5 Potassium persulfate 47 Ethylenediamine tetraacetic acid 1 Sodium metasilicate 12 Magnesium oxide 1 Kaolinite 7.7 Oxide titanium anatase 2 Vinylpyrrolidone / vinyl acetate copolymer (65/35) 1.8 Guar gum 2.7 Cetylhydroxy cellulose (NATROSOL PLUS 330 CS from ASHLAND) 1 Copolymer polyethyleneglycol with 136 moles of ethylene oxide, stearyl alcohol polyoxyethylenated with 100 moles of ethylene oxide and 3 hexamethylene diisocyanate (HDI) (Elementis RHEOLATE FX 1100 ®) Sodium cetostearyl sulphate 1 Sodium lauryl sulphate 2,3 Magnesium stearate 2 Composition B Urea 3 Ammonium chloride 4,5 Sodium sulphate 8 Potassium sulphate 47 Ethylenediamine tetraacetic acid 1 Sodium metasilicate 12 Magnesium oxide 1 Kaolinite 5 Anatase titanium oxide 2 Vinylpyrrolidone copolymer / vinyl acetate (65/35) 1.8 Guar gum 2.7 Hydrogenated polydecene (PM 549) 1.7 Polyquaternium-5 (Merquat 5 from Nalco) 1 Cetylhydroxy cellulose (NATROSOL PLUS 330 CS from ASHLAND) 1 Copolymer polyethylene glycol with 136 moles of ethylene oxide, polyoxyethylenated stearyl alcohol with 100 moles of ethylene oxide and 3 hexamethylene diisocyanate (HDI) (Elementis RHEOLATE FX 1100 ®) Cetostearyl sodium sulphate 1 Sodium lauryl sulphate 2, Magnesium stearate 2 Tablets of 2 grams each were prepared from the powders obtained from each composition A and B using a SPECAC compacting machine, the compressive force being 0.2 MPa.

The compositions A and B in compressed form thus obtained are admixable with an aqueous hydrogen peroxide composition C at 40 volumes at pH2.2 in a ratio of 1: 1.5 (ie 1 tablet of composition A and 1 Tablet composition B for 3 g of composition C).

The mixture obtained can be applied to pigmented hair to obtain a good lightening. EXAMPLE 2 The compositions in the following powder form were prepared: Composition A Urea 3 Sodium persulfate 8 Ammonium chloride 4.5 Potassium persulfate 47 Ethylenediamine tetraacetic acid 1 Sodium metasilicate 12 Magnesium oxide 1 Kaolinite 7.7 Oxide titanium anatase 2 Vinylpyrrolidone / vinyl acetate copolymer (65/35) 1.8 Guar gum 2.7 Cetylhydroxy cellulose (NATROSOL PLUS 330 CS from ASH LAND) 1 Copolymer polyethyleneglycol with 136 moles of ethylene oxide, alcohol polyoxyethylenated stearyl with 100 moles of ethylene oxide and hexamethylene diisocyanate (HDI) (Elementis RHEOLATE FX 1100 ®) 3 Sodium cetostearyl sulphate 1 Sodium lauryl sulphate 2,3 Magnesium stearate 2 Composition B 'Urea 3 Chloride d ammonium 4,5 Sodium sulphate 7 Peroxide of urea 48 Ethylenediamine tetraacetic acid 1 Sodium metasilicate 12 Magnesium oxide 1 Kaolinite 5 Anatase titanium oxide 2 Vinylpyrrolidone / acetate copolymer of vinyl (65/35) 1.8 Guar gum 2.7 Hydrogenated polydecene (PM 549) 1.7 Polyquaternium-5 (Merquat 5 from Nalco) 1 Cetylhydroxy cellulose (NATROSOL PLUS 330 CS from ASHLAND) 1 Copolymer polyethylene glycol 136 moles of ethylene oxide, 3 stearyl alcohol polyoxyethylenated with 100 moles of ethylene oxide and hexamethylene diisocyanate (HDI) (Elementis RHEOLATE FX 1100 ®) Cetostearyl sodium sulphate 1 Sodium lauryl sulphate 2,3 Stearate Magnesium 2 Tablets of 2 grams each were prepared from the powders obtained from each composition A and B using a SPECAC compacting machine, the compressive force being 0.2 MPa.

The compositions A and B in compressed form thus obtained are admixable with an aqueous composition C whose pH is adjusted to 2.2 in a ratio 1 / 1.5 (ie 1 tablet of composition A and a tablet of composition B for 3 g of composition C) The mixture obtained is to be applied to pigmented hair to obtain a good lightening.

Claims (3)

REVENDICATIONS1. A method for bleaching keratinous fibers comprising applying to the keratin fibers a bleaching agent resulting from the mixture of at least two compositions in compressed form, the first composition (composition A) comprising at least one persulfate and the second component (composition B) comprising at least one a compound (i) different from the persulfates, and at least one aqueous composition (composition C). Process according to Claim 1, characterized in that the compound (i) is chosen from alkaline agents, the various oxidizing agents of thepersulphates, the conditioning agents, the surfactants distinct from the conditioning agents, and their mixtures. Process according to one of claims 1 or 2, characterized in that the persulfate concentration is between 10 and 80% by weight, preferably between 20 and 65% by weight and better still between 40 and 60% by weight of the total weight. of the composition A. Process according to any one of the preceding claims, characterized in that the composition B comprises at least one oxidizing agent other than the persulfates. Process according to any one of the preceding claims, characterized in that composition B comprises at least one oxidizing agent chosen from: - urea peroxide, - polymer complexes that can release hydrogen peroxide, such as polyvinylpyrrolidone complexes / H202, - the peroxides of metals generating in water hydrogen peroxide such as calcium peroxide, magnesium peroxide; - perborates; percarbonates, and mixtures thereof. 10 2. 15 3. 204. 5. 25 306. Process according to any one of the preceding claims, characterized in that the oxidizing agent is present in a content ranging from 0.5 to 70% by weight, preferably from 1 to 60% by weight. by weight, and better still from 5 to 20% of the total weight of composition B. 7. Process according to any one of the preceding claims, characterized in that composition B comprises at least one conditioning agent chosen from non-fatty substances. silicones, non-silicone cationic polymers, silicones and mixtures thereof. 8. Method according to the preceding claim, characterized in that the conditioning agent is present in a content ranging from 0.01 to 30% by weight, more particularly from 0.05 to 20% by weight, better still 0.1 at 10% by weight relative to the weight of the composition B. 9. Process according to any one of the preceding claims, characterized in that the composition B comprises at least one alkaline agent chosen from water-soluble silicates, such as silicates of alkali or alkaline earth metals, basic or tribasic alkali or alkaline earth metal phosphates or alkali or alkaline earth metal carbonates, and mixtures thereof. 10. Process according to the preceding claim, characterized in that the alkaline agent (s) are present in a content ranging from 0.1 to 40% by weight, preferably from 0.5 to 30% by weight, and better still from 1 to 25% by weight of the total weight of the composition B. 11. Process according to any one of the preceding claims, characterized in that the composition B comprises at least one surfactant chosen from anionic, amphoteric, nonionic, zwitterionic and cationic surfactants. .12. Process according to any one of the preceding claims, characterized in that at least one of the compositions A or B comprises at least one rheology modifying agent chosen from hydrophilic thickening agents, the amphiphilic polymers comprising at least one hydrophobic chain, the fillers and their mixtures. 13. Process according to any one of the preceding claims, characterized in that at least one of compositions A or B comprises at least one agent chosen from cellulose and cellulose derivatives, crosslinked polyacrylates, crosslinked polyvinylpyrrolidone and gums. such as guar gum, soy polysaccharides, alginates, aluminum silicates and their derivatives, hydrophilic silicas and mixtures thereof. 14. Method according to any one of the preceding claims, characterized in that the compositions A and B in compressed form have at least one dimension greater than 6 mm, preferably greater than or equal to 8 mm, preferably greater than or equal to 10 mm. mm. 15. Method according to any one of claims 1 to 14, characterized in that the composition C comprises at least one oxidizing agent, preferably hydrogen peroxide. 16. Multi-compartment device comprising at least: a composition A in compressed form comprising at least one persulfate, a composition B in compressed form comprising at least one compound (i) other than persulfates and optionally - and at less an aqueous composition C, said compositions being packaged separately.