PRODUCT FOR COLORING HUMAN KERATIN FIBERS AND CORRESPONDING COLORING PROCESS

Abstract

The present invention relates to a product for dyeing human keratinous fibers, such as hair, containing: A) a dyeing composition comprising: a) one or more fatty acids; b) one or more non-ionic surfactants, c) one or more non-associative polymers chosen from amphoteric polymers, cationic polymers and their mixture, d) at least 10% by weight of one or more fatty substances other than fatty acids, relative to the total weight of the composition, e) one or more polyols, f) one or more oxidation bases, g) one or more oxidation couplers chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I) below, one of its addition salts, its solvates and / or solvates of its salts: (I), and B) an oxidizing composition comprising one or more oxidizing agents. Figure for abstract: none

Description

Title of the invention: HUMAN KERATIN FIBER STAINING PRODUCT AND CORRESPONDING STAINING METHOD

[0001] The invention relates to a human keratin fiber dyeing product comprising a dye composition including one or more fatty acids, one or more non-ionic surfactants, one or more non-associative polymers, at least 10% by weight of one or more fatty substances, one or more polyols, a specific dye precursor and an oxidizing composition.

[0002] The invention also relates to a process for dyeing keratinous fibers, in particular hair, using the composition resulting from the mixture of the dye and oxidant compositions.

[0003] It is a known practice, for dyeing human keratinous fibers, and in particular hair, to use oxidizing compositions, more specifically dye compositions containing oxidation dye precursors, generally referred to as oxidation bases and couplers. These dye precursors are colorless or weakly colored compounds. When combined with an oxidizing agent such as hydrogen peroxide, which is added at the time of use, they give rise, through a process of oxidative condensation, to colored compounds.

[0004] Generally, this process is carried out at an alkaline pH, particularly in the presence of ammonia, and produces a dye and, at the same time, a lightening of the fiber, which in practice manifests itself as the possibility of obtaining a color that is lighter than the original color. Furthermore, the lightening of the fiber has the advantage of achieving a unified color in the case of depigmented hair, and of accentuating the color—that is, making it more visible—in the case of naturally pigmented hair.

[0005] However, although these conditions of use prove effective, they may give rise to a number of inconveniences at the time of their use.

[0006] In particular, when these compositions are applied to the hair, there is generally a release of ammonia, which can lead to a suffocating odor that irritates the eyes, respiratory tract and mucous membranes.

[0007] In addition, particularly in people with a sensitive scalp, ammonia can cause uncomfortable reactions, such as redness, itching or tingling.

[0008] Finally, ammonia, in combination with the oxidizing agent, can also contribute to damaging keratin fibers. Indeed, over the long term, it is observed that the fibers are more or less degraded and tend to become dull, lifeless, fragile, and difficult to style.

[0009] Therefore, in order to remedy all the disadvantages described above, many alternatives have already been proposed with the aim of significantly reducing ammonia levels in compositions intended for dyeing fibers.

[0010] To this end, proposals have been made for applying hair coloring compositions that include a non-volatile organic amine, such as monoethanolamine. Although such compositions have the advantage of not releasing ammonia during use, they generally cause discomfort, and in particular irritation, in people with sensitive scalps. Moreover, for equivalent lightening performance, monoethanolamine damages hair more than ammonia.

[0011] To improve hair condition, it has been proposed to use conditioning polymers, such as cationic or amphoteric polymers, but scalp comfort problems can still occur. It is necessary to develop compositions capable of improving the deposition of these conditioning polymers on the hair while reducing scalp exposure to these ingredients.

[0012] To reduce the unpleasant odors of alkaline compositions, particularly when ammonia is used, scalp discomfort and damage to keratin fibers, while maintaining good coloring properties, WO2018019852 has already proposed using a dye composition comprising fatty acids, non-ionic surfactants, cationic or amphoteric polymers and at least 10% fatty substances.

[0013] However, the dyeing performance levels after application on keratinous fibers can still be improved.

[0014] Moreover, dye compositions often include a raw material, particularly dye precursors, for which regulatory requirements are becoming increasingly stringent. It is therefore necessary to develop compositions comprising alternative compounds, while maintaining the level of dyeing performance.

[0015] Thus, there is a need to provide a dye composition for keratinous fibers, particularly human keratinous fibers such as hair, which is capable of achieving performance levels, especially in terms of absorption of colour, resistance and chromaticity, while limiting hair damage and improving the cosmetic appearance of the hair.

[0016] These objectives and others are achieved by the present invention, one subject of which is a dyeing product for human keratinous fibers, such as hair, containing:

[0017] A) a dye composition comprising:

[0018] a) one or more fatty acids; i

[0019] b) one or more non-ionic surfactants,

[0020] c) one or more non-associative polymers selected from amphoteric polymers, cationic polymers and mixtures thereof,

[0021] d) at least 10% by weight of one or more fatty substances other than fatty acids, relative to the total weight of the composition,

[0022] e) one or more polyols,

[0023] f) one or more oxidation bases,

[0024] g) one or more oxidation couplers selected from hydroxyethyl 1-3,4-methylenedioxyaniline of formula (I) below, one of its addition salts, its solvates and / or solvates of its salts: (I), and

[0025] B) an oxidizing composition comprising one or more oxidizing agents.

[0026] The invention also relates to a process for dyeing keratinous fibers which includes the application to said fibers of the composition resulting from the mixture of the dye composition and the oxidizing composition.

[0027] The keratin fiber dyeing product according to the invention can achieve the above objectives, particularly in terms of color absorption, color strength, chromaticity, selectivity, fastness, and workability. Furthermore, it imparts good cosmetic properties to the hair.

[0028] The product according to the invention also makes it possible to produce various shades of color.

[0029] The product according to the invention also has the advantage of leading to an effective lightening of keratinous fibers while at the same time reducing unpleasant and nauseating odors, in particular of ammonia, which may be released when it is applied to said fibers.

[0030] The product of the invention also provides comfort to the scalp.

[0031] The product according to the invention also makes it possible to effectively revitalize keratin fibers, in particular by providing them with improved cosmetic properties, by in particular by giving them a softer and more uniform feel, and also suppleness, as well as a better shine.

[0032] The product of the invention has good working properties, in particular it allows easy mixing of the dye and oxidant compositions, easy application of the mixture and easy distribution over the entire hair.

[0033] Other features and advantages of the invention will become clearer upon reading the description and examples that follow.

[0034] In the text below, unless otherwise stated, the limits of a range of values ​​are included in that range. The expression "at least one" associated with an ingredient of the composition means "one or more".

[0035] The human keratinous fibers treated via the process according to the invention are preferably hair.

[0036] The keratin fiber dyeing product comprises a dyeing composition and an oxidizing composition. Dye composition

[0037] Fatty Acids

[0038] The dye composition according to the invention comprises one or more fatty acids.

[0039] The term "fatty acid" refers to a long-chain carboxylic acid comprising at least 6 carbon atoms, in particular from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. The solid fatty acids according to the invention preferably comprise from 10 to 30 carbon atoms and even more preferably from 14 to 22 carbon atoms. They may optionally be hydroxylated.

[0040] The fatty acid of the invention may be present in free form or in partially or totally neutralized form.

[0041] Preferably, the fatty acids present in the dye composition according to the invention include at least one carboxylic acid group and a linear or branched alkyl chain, saturated or unsaturated, in particular unsaturated, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, more preferably from 10 to 30 carbon atoms and better still from 14 to 22 carbon atoms.

[0042] Preferably, the fatty acids include at least one carboxylic acid group and a linear or branched alkyl chain, saturated or unsaturated, in particular unsaturated, comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

[0043] Preferably, the fatty acids include at least one carboxylic acid group and a linear or branched unsaturated alkyl chain comprising 14 to 22 carbon atoms.

[0044] More preferably, the fatty acids according to the invention are chosen from compounds having the structure RC(O)OH in which R represents an alkyl group linear or branched, saturated or unsaturated comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better still from 14 to 20 carbon atoms.

[0045] For the purposes of the present invention, the fatty acids present in the dye composition are neither oxyalkylated nor glycerolated.

[0046] Fatty acids can be chosen from solid acids and liquid fatty acids, and mixtures thereof.

[0047] For the purposes of the present invention, the expression "solid fatty acid" means a fatty acid having a melting point above 25 °C, preferably above or equal to 28 °C, more preferably above or equal to 30 °C at atmospheric pressure (1.013x105 Pa).

[0048] The solid fatty acids used in the present invention are in particular selected from myristic acid, cetyl acid, stearylic acid, palmitic acid, arachidic acid, stearic acid, lauric acid, behenic acid, 12-hydroxystearic acid, and mixtures thereof.

[0049] Particularly preferably, the solid fatty acid(s) are chosen from lauric acid, myristic acid, palmitic acid, stearic acid and mixtures thereof, more preferably from myristic acid, palmitic acid, stearic acid and mixtures thereof.

[0050] For the purposes of the present invention, the expression "liquid fatty acid" means a fatty acid having a melting point less than or equal to 25 °C, preferably less than or equal to 20 °C at atmospheric pressure (1.013x105 Pa).

[0051] The liquid fatty acid(s) according to the invention can be chosen from oleic acid, linoleic acid, arachidonic acid, isostearic acid, isopalmitic acid, and mixtures thereof, preferably oleic acid.

[0052] Preferably, the fatty acids present in the dye composition according to the invention are chosen from lauric acid, oleic acid, linoleic acid, linolenic acid, undecylenic acid, isocetyl acid, isostearic acid, palmitic acid, stearic acid and cetylstearic acid, and mixtures thereof, preferably chosen from myristic acid, palmitic acid, stearic acid and mixtures thereof.

[0053] Preferably, the fatty acids present in the dye composition according to the invention are solid fatty acids, in particular chosen from fatty acids including at least one carboxylic acid group and a linear or branched unsaturated alkyl chain comprising 10 to 30 carbon atoms, in particular 14 to 22 carbon atoms.

[0054] Preferably, the fatty acids present in the dye composition according to the invention are solid fatty acids, in particular selected from myristic acid, palmitic acid and stearic acid and mixtures thereof.

[0055] Advantageously, the fatty acid(s) are present in the dye composition in a total content ranging from 0.1% to 15% by weight, preferably from 0.2% to 10% and preferably from 0.4% to 5% by weight, and even better from 0.5% to 3% by weight relative to the total weight of the dye composition.

[0056] In a particular embodiment, the solid fatty acid(s) are advantageously present in a total content ranging from 0.1% to 15% by weight, preferably from 0.2% to 10% and preferably from 0.4% to 5% by weight, and even better from 0.5% to 3% by weight relative to the total weight of the dye composition.

[0057] Non-ionic surfactants

[0058] Nonionic surfactants can be selected from monooxyalkylated or polyoxyalkylated, monoglycerol or polyglycerol nonionic surfactants. The oxyalkylene motifs are more particularly oxyethylene or oxypropylene motifs, or a combination thereof, preferably oxyethylene motifs.

[0059] Examples of oxyalkylated nonionic surfactants that may be cited include: • (C8-C24) oxyalkylened alkylphenols, • saturated or unsaturated, linear or branched alcohols, oxyalkylated at C8-C30, • saturated or unsaturated, linear or branched, C8-C30 oxyalkylated amides, • Esters of saturated or unsaturated, linear or branched, C8-C30 acids and polyethylene glycols, • Polyoxyethylenated esters of saturated or unsaturated, linear or branched, C8-C30 acids and sorbitol, • saturated or unsaturated oxyethylenated vegetable oils, such as oxyethylenated hydrogenated castor oil (40 or 60 EO) • ethylene oxide and / or propylene oxide condensates, among others, alone or in mixtures. • C8-C30 oxyethylenated fatty acid esters of sorbitan, preferably C8-C30 oxyethylenated fatty acid esters of sorbitan.

[0060] The surfactants contain a number of moles of ethylene oxide and / or propylene oxide between 1 and 100, preferably between 2 and 80 and preferably between 2 and 50.

[0061] Non-ionic oxyalkylated surfactants are preferably selected from C8-C30 oxyethylenated alcohols comprising 1 to 100 moles of ethylene oxide; polyoxyethylenated esters of linear or branched, saturated or unsaturated C8-C30 acids and sorbitol comprising 1 to 100 moles of ethylene oxide; and saturated or unsaturated oxyethylenated vegetable oils comprising 1 to 100 moles of ethylene oxide.

[0062] As examples of monoglycerol or polyglycerol non-ionic surfactants, C8-C40 monoglycerol or polyglycerol alcohols are preferably used.

[0063] In particular, monoglycerol or polyglycerol alcohols in the C8-C40 range correspond to the following formula:

[0064] RO-[CH2-CH(CH2OH)-O]mH

[0065] in which R represents a linear or branched C8-C40 alkyl or alkenyl radical and preferably a C8-C30 alkyl or alkenyl radical, and m represents a number from 1 to 30 and preferably from 1 to 10.

[0066] By way of examples of compounds suitable in the context of the invention, we may mention lauryl alcohol containing 4 moles of glycerol (INCI name: Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 moles of glycerol, oleyl alcohol containing 4 moles of glycerol (INCI name: Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 moles of glycerol (INCI name: Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 moles of glycerol, cetearyl alcohol containing 6 moles of glycerol, oleocetyl alcohol containing 6 moles of glycerol, and octadecanol containing 6 moles of glycerol.

[0067] Alcohol can represent a mixture of alcohols in the same way that the value of m represents a statistical value, meaning that, in a commercial product, several species of polyglycerol fatty alcohols can coexist in the form of a mixture.

[0068] Among monoglycerol or polyglycerol alcohols, it is particularly preferable to use C8 / C10 alcohol containing 1 mole of glycerol, C10 / C12 alcohol containing 1 mole of glycerol and C12 alcohol containing 1.5 mole of glycerol.

[0069] Non-ionic surfactants that may also be cited include non-oxyethylenated fatty acid esters of sorbitan, fatty acid esters of sucrose, optionally oxyalkylenated alkylpolyglycosides, alkylglucoside esters, N-alkylglucamine and N-acylmethylglucamine derivatives, aldobionamides and amine oxides.

[0070] We can also mention non-ionic surfactants of the alkyl(poly)glycoside type, represented in particular by the following general formula: RlO-(R2O)t-(G)v

[0071] in which: • RI represents a linear or branched alkyl or alkenyl radical comprising from 6 to 24 carbon atoms and in particular from 8 to 18 carbon atoms, or an alkylphenyl radical whose linear or branched alkyl radical comprises from 6 to 24 carbon atoms and in particular from 8 to 18 carbon atoms; • R2 represents an alkylene radical comprising 2 to 4 carbon atoms, • G represents a sugar motif comprising 5 to 6 carbon atoms, • t denotes a value ranging from 0 to 10 and preferably from 0 to 4, • v denotes a value ranging from 1 to 15 and preferably from 1 to 4.

[0072] Preferably, alkylpolyglycoside surfactants are compounds of the formula described above in which: • RI designates a saturated or unsaturated, linear or branched alkyl radical, comprising 8 to 18 carbon atoms, • R2 represents an alkylene radical comprising 2 to 4 carbon atoms, • t denotes a value ranging from 0 to 3, and preferably equal to 0, • G designates glucose, fructose or galactose, preferably the glucose; • the degree of polymerization, namely the value of v, possibly ranging from 1 to 15 and preferably from 1 to 4; the average degree of polymerization being more particularly between 1 and 2.

[0073] The glucoside bonds between the sugar motifs are generally of type 1-6 or 1-4, preferably of type 1-4. Preferably, the alkyl(poly)glycoside surfactant is a C8 / C16 alkyl(poly)glycoside 1,4, and in particular decyl glucosides and caprylyl / caprylyl glucosides are most particularly preferred.

[0074] Among the commercial products, we can mention the products sold by the company COGNIS under the names PLANTAREN® (600 CS / U, 1200 and 2000) or PLANTACARE® (818, 1200 and 2000); the products sold by the company SEPPIC under the names ORAMIX CG 110 and ORAMIX NS 10; the products sold by the company BASF under the name LUTENSOL GD 70, or the products sold by the company CHEM Y under the name AGIO LK.

[0075] Preferably, C8 / C16-alkyl(poly)glycosides 1,4 are used, in particular in aqueous solution at 53%, such as those sold by Cognis under the reference Plantacare® 818 UP.

[0076] Among nonionic surfactants, it is preferable, according to the invention, to use oxyalkylated nonionic surfactants, preferably oxyethylated, in particular selected from saturated or unsaturated, linear or branched, oxyalkylated surfactants, preferably selected from C8-C30 oxyethylenated alcohols and C8-C30 oxyalkylenated fatty acid esters of sorbitan, preferably C8-C30 oxyethylenated fatty acid esters of sorbitan. More preferably, non-ionic surfactants ionic are chosen from C8-C30 oxyethylenated alcohols comprising from 1 to 100 moles of ethylene oxide, preferably from 1 to 50 moles of ethylene oxide, more preferably from 2 to 30 moles of ethylene oxide.

[0077] Preferably, the dye composition comprises non-ionic oxyalkylated surfactants, preferably oxyethylated, in particular selected from saturated or unsaturated, linear or branched, oxyalkylated surfactants, preferably selected from C8-C30 oxyethylated alcohols and C8-C30 oxyalkylated fatty acid esters of sorbitan, preferably C8-C30 oxyethylated fatty acid esters of sorbitan.

[0078] More preferably, the dye composition comprises C8-C30 oxyethylenated alcohols comprising from 1 to 100 moles of ethylene oxide, preferably from 1 to 50 moles of ethylene oxide, more preferably from 2 to 30 moles of ethylene oxide.

[0079] According to a specific embodiment, the dye composition of the invention comprises at least one oxyethylenated nonionic surfactant comprising a number of OE motifs from 1 to 9 and at least one oxyethylenated nonionic surfactant comprising at least 10 OE motifs, said surfactants being preferably chosen from among the C8-C30 oxyethylenated fatty alcohols as described above.

[0080] The total quantity of non-ionic surfactants is preferably from 0.1% to 20% by weight, preferably from 0.5% to 15% by weight and better still, from 1% to 10% by weight, even better from 3% to 10% by weight relative to the total weight of the dye composition.

[0081] Amphoteric and cationic non-associative polymers

[0082] The dye composition according to the invention comprises one or more non-associative polymers selected from amphoteric polymers, cationic polymers and their mixture.

[0083] The term "amphoteric polymer" means any polymer comprising cationic groups and / or groups that can be ionized into cationic groups, and anionic groups and / or groups that can be ionized into anionic groups.

[0084] Amphoteric polymers can preferably be chosen from among amphoteric polymers comprising a repeating unit of: i. one or more motifs derived from a (meth)acrylamide type monomer, ii. one or more motifs derived from a monomer of type (meth)acrylamidoalkyltrialkylammonium, and iii. one or more motifs derived from an acidic monomer of the (meth)acrylic acid type.

[0085] Preferably, motifs derived from a (meth)acrylamide type monomer (i) are structural motifs (la) below: (you)

[0086] in which RI designates H or CH3 and R2 is chosen from an amino, dimethylamino, tert-butylamino, dodecylamino or -NH-CH2OH radical.

[0087] Preferably, said amphoteric polymer comprises a repetition of a single motif of formula (la).

[0088] The motif derived from a (meth)acrylamide-type monomer of formula (la) in which RI denotes H and R2 is an amino radical (NH2) is particularly preferred. It corresponds to the acrylamide monomer itself.

[0089] Preferably, motifs derived from a monomer of the type (meth)acrylamidoalkyltrialkylammonium (ii) are structural motifs (lia) below:

[0090] in which: • R3 designates H or CH3, • R4 denotes a group (CH2)k with k being an integer from 1 to 6 and preferably from 2 to 4; • R5, R6 and R7, which may be identical or different, designate a group alkyl containing 1 to 4 carbon atoms; • Y- is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate or phosphate.

[0091] Preferably, said amphoteric polymer comprises a repetition of a single motif of formula (Ha).

[0092] Among these motifs derived from a monomer of the type (meth)acrylamidoalkyl trialkylammonium of formula (lia), those that are preferred are those derived from the methacrylamidopropyltrimethylammonium chloride monomer, for which R3 designates a methyl radical, n is equal to 3, R5, R6 and R7 designate a methyl radical, and Y- designates a chloride anion.

[0093] Preferably, motifs derived from a (meth)acrylic acid type monomer (iii) are motifs of formula (Ilia): % 1 I— s

[0094] in which R8 designates H or CH3 and R9 designates a hydroxyl radical or a -NH-C(CH3)2-CH2-SO3H radical.

[0095] The preferred formula motifs (Ilia) correspond to the monomers of acrylic acid, methacrylic acid and 2-acrylamino-2-methylpropanesulfonic acid.

[0096] Preferably, the motif derived from a (meth)acrylic acid type monomer of formula (Ilia) is that derived from acrylic acid, for which R8 designates a hydrogen atom and R9 designates a hydroxyl radical.

[0097] The (meth)acrylic acid type monomer(s) may be unneutralized or partially or totally neutralized with an organic or mineral base.

[0098] Preferably, said amphoteric polymer comprises a repetition of a single motif of formula (Ilia).

[0099] According to a preferred embodiment of the invention, the amphoteric polymer(s) of this type comprise at least 30 mol% of motifs derived from a (meth)acrylamide type monomer (i). Preferably, they comprise from 30 mol% to 70 mol% and more preferably from 40 mol% to 60 mol% of motifs derived from a (meth)acrylamide type monomer.

[0100] The content of motifs derived from a monomer of the type (meth)acrylamidoal kyltrialkylammonium (ii) may advantageously be from 10% in mol to 60% in mol and preferably from 20% in mol to 55% in mol.

[0101] The content of motifs derived from an acid monomer of the (meth)acrylic acid (iii) type may advantageously be from 1% in mole to 20% in mole and preferably from 5% in mole to 15% in mole.

[0102] According to a particularly preferred embodiment of the invention, the amphoteric polymer of this type comprises: • from 30% by mole to 70% by mole and more preferably from 40% by mole to 60% by mole of motifs derived from a monomer of the (meth)acrylamide (i) type, • from 10% to 60% by mol and preferably from 20% to 55% by mol of motifs derived from a monomer of the type (meth)acrylamidoalkyltrialkylammonium (ii), and • from 1% in mole to 20% in mole and preferably from 5% in mole to 15% in mole of motifs derived from a monomer of the (meth)acrylic acid type (iii).

[0103] Amphoteric polymers of this type may also include additional motifs, other than motifs derived from a monomer of the (meth)acrylamide type, (meth)acrylamidoalkyltrialkylammonium type and (meth)acrylic acid type as described above.

[0104] However, according to a preferred embodiment of the invention, said amphoteric polymers consist solely of motifs derived from monomers (i) of the (meth)acrylamide type, (ii) of the (meth)acrylamidoalkyltrialkylammonium type and (iii) of the (meth)acrylic acid type.

[0105] As examples of amphoteric polymers that are particularly preferred, acrylamide / methacrylamidoprop yltrimethylammonium chloride / acrylic acid terpolymers may be cited. These polymers are listed in the CTFA (International Cosmetic Ingredient Dictionary) under the name Polyquaternium 53. The corresponding products are notably sold under the names Merquat 2003 and Merquat 2003 PR by the company Nalco.

[0106] As another preferred type of amphoteric polymer that can be used, copolymers based on (meth)acrylic acid and a dialkyldiallylammonium salt can also be mentioned, such as (meth)acrylic acid and dimethyldiallylammonium chloride copolymers (INCI name POLYQUATERNIUM-22). An example that can be cited is Merquat 280 sold by the Nalco company.

[0107] Preferably, the dye composition according to the invention comprises one or more non-associative amphoteric polymers, more preferably one or more copolymers based on (meth)acrylic acid and a dialkyldiallylammonium salt, or even better, a copolymer of (meth)acrylic acid and dimethyldiallylammonium chloride

[0108] The term "cationic polymer" refers to any polymer comprising cationic groups and / or groups that can be ionized into cationic groups, without anionic groups and / or groups that can be ionized into anionic groups. Preferred cationic polymers are chosen from those containing motifs comprising primary, secondary, tertiary, and / or quaternary amine groups that may be part of the main polymer chain or be attached to a side substituent directly bonded thereto.

[0109] The cationic polymers that can be used preferably have a weight average molar mass (Mw) between approximately 500 and 5x106 and preferably between approximately 103 and 3x106.

[0110] Among cationic polymers, the following may be mentioned in particular: [YES] (1) homopolymers or copolymers derived from acrylic or methacrylic esters or amides and comprising at least one of the units of the following formulas: —CHrC—> OC 1 Rs ç™ OÇ NH HAS N

[0112] -CHp ç — > O-Ô NH HAS R ~ 4 in which: • R3, which may be the same or different, designates a hydrogen atom or a CH3 radical; • A, which may be identical or different, represents a linear or branched divalent alkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms, or a hydroxyalkyl group of 1 to 4 carbon atoms; • R4, R5 and R6, which may be identical or different, represent a alkyl group containing from 1 to 18 carbon atoms or a benzyl radical, preferably an alkyl group containing from 1 to 6 carbon atoms; • RI and R2, which may be identical or different, represent a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms, preferably methyl or ethyl; • X denotes an anion derived from a mineral or organic acid, such as a methosulfate anion or a halide such as chloride or bromide.

[0113] The copolymers of family (1) may also contain one or more motifs derived from comonomers which may be selected from the family of acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen by lower alkyl groups (in C1-C4), esters of acrylic or methacrylic acids, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, and vinyl esters.

[0114] (2) Cationic polysaccharides, in particular cationic celluloses and galactomannan gums. Among cationic polysaccharides, we can mention in particular cellulose ether derivatives comprising quaternary ammonium groups, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, and cationic galactomannan gums.

[0115] (3) Polymers formed from piperazinyl motifs and alkylene radicals or divalent hydroxyalkylene containing straight or branched chains, optionally interrupted by oxygen, sulfur or nitrogen atoms or by aromatic or heterocyclic rings, as well as the oxidation and / or quaternization products of these polymers.

[0116] (4) Water-soluble polyaminoamides prepared in particular by polycondensation of an acidic compound with a polyamine; these polyaminoamides may be crosslinked with an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, or alternatively with an oligomer resulting from the reaction of a difunctional compound that is reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, an epihalohydrin, a diepoxide, or a bis- derivative. unsaturated; the crosslinking agent being used in proportions ranging from 0.025 to 0.35 mole per amine group of the polyamino amide; these polyamino amides may be alkylated or, if they contain one or more tertiary amine functions, they may be quatemized.

[0117] (5) Polyamino amide derivatives resulting from the condensation of polyalkylene Polyamines with polycarboxylic acids followed by alkylation with bifunctional agents. Examples include adipic acid / dialkylaminohydroxyalkyldialkylenetriamine polymers in which the alkyl radical comprises 1 to 4 carbon atoms and preferentially designates methyl, ethyl, or propyl.

[0118] (6) Polymers obtained by reacting a polyalkylene polyamine including two primary amine groups and at least one secondary amine group with a dicarboxylic acid selected from diglycolic acid and saturated aliphatic dicarboxylic acids containing 3 to 8 carbon atoms; the molar ratio between the polyalkylene polyamine and the dicarboxylic acid being preferably between 0.8:1 and 1.4:1; the resulting polyamino amide being reacted with epichlorohydrin in a molar ratio between the epichlorohydrin and the secondary amine group of the polyaminoamide preferably between 0.5:1 and 1.8:1.

[0119] (7) Alkyldiallylamine or dialkyldiallylammonium cyclopolymers, such that homopolymers or copolymers containing, as the main constituent of the chain, motifs conforming to formula (I) or (II): --CR.J CH... \ Y R. / : ■: (CHçH

[0120] in which: • k and t are equal to 0 or 1, the sum k + t being equal to 1; • R12 designates a hydrogen atom or a methyl radical; • RIO and RI 1, independently of each other, denote an alkyl group in C1-C6, a hydroxyalkyl group in C1-C5, an amidoalkyl group in Cl-C4; or alternatively RIO and RI 1 can denote, jointly with the atom of nitrogen to which they are attached, a heterocyclic group such as piperidinyl or morpholinyl; RIO and RI 1, independently of each other, preferentially denote a C1-C4 alkyl group; and • Y- is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate or phosphate.

[0121] We can cite more particularly the homopolymer of dimethyldiallylammonium salt (for example chloride) sold for example under the name Merquat 100 by the company Nalco, and the copolymers of diallyldimethylammo nium salts (for example chloride) and acrylamide, notably sold under the names Merquat 550 and Merquat 7SPR.

[0122] (8) Quaternary diammonium polymers comprising repeating motifs of formula:

[0123] in which: • R13, R14, R15 and R16, which may be identical or different, represent aliphatic, alicyclic or arylaliphatic radicals comprising 1 to 20 carbon atoms or hydroxyalkylaliphatic radicals in Cl-Cl 2,

[0124] or R13, R14, R15 and R16, together or separately, constitute with the nitrogen atoms to which they are attached heterocycles optionally comprising a second non-nitrogen heteroatom,

[0125] or R13, R14, R15 and R16 represent a linear or branched C1-C6 alkyl radical substituted by a nitrile, ester, acyl, amide or -CO-O-R17-D or -CO-NH-R17-D group in which R17 is an alkylene and D is a quaternary ammonium group; • Al and B1 represent divalent polymethylene groups comprising from 2 to 20 carbon atoms which may be linear or branched, saturated or unsaturated, and which may contain, bonded to or inserted into the main chain, one or more aromatic rings, or one or more oxygen or sulfur atoms, 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;

[0126] it being understood that Al,R13 andR15 can form, with the two nitrogen atoms to which they are attached, a piperazine ring;

[0127] 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- group in which n and p, which may be identical or different, denote an integer from 2 to 20, and in which D denotes:

[0128] a) a glycol residue of formula -OZO-, in which Z denotes a linear or branched hydrocarbon-based radical, or a group corresponding to one of the following formulas: -(CH2-CH2-O)x-CH2-CH2- and -[CH2CH(CH3)-O]y-CH2-CH(CH3)-, where x and y denote an integer from 1 to 4, representing a defined and unique degree of polymerization or any number from 1 to 4 representing an average degree of polymerization;

[0129] b) a bis-secondary diamine residue, such as a piperazine derivative;

[0130] c) a primary bis-diamine residue of formula: -NH-Y-NH-, where Y denotes a radical based on linear or branched hydrocarbons, or the divalent radical -CH2-CH2-SS-CH2-CH2-;

[0131] d) a ureylene group of formula: -NH-CO-NH- ;

[0132] Preferably, X- is an anion such as chloride or bromide. These polymers have a number-average molar mass (Mn) generally between 1000 and 100,000.

[0133] One can cite in particular polymers which are composed of repeated motifs corresponding to the formula: R, N" [GH A — (M IX r £ x r4

[0134] wherein RI, R2, R3 and R4, which may be identical or different, denote an alkyl or hydroxyalkyl radical containing 1 to 4 carbon atoms, n and p are integers from 2 to 20, and X- is an anion derived from an organic or mineral acid.

[0135] A particularly preferred compound of formula (IV) is that in which RI, R2, R3 and R4 represent a methyl radical and n = 3, p = 6 and X = Cl, known as Hexadimethrine chloride according to INCI nomenclature (CTFA).

[0136] (1) Polyquater ammonium polymers comprising formula motifs (V): — N+ - NH - CO - (CHU. - CO™ NH ■ (CHA — N+ — A X- * ]

[0137] in which: • R18, R19, R20 and R21, which may be identical or different, represent a hydrogen atom or a methyl, ethyl, propyl, [3-hydroxyethyl, [3-hydroxypropyl or -CH2CH2(OCH2CH2)pOH group, where p is equal to 0 or an integer between 1 and 6, provided that R18, R19, R20 and R21 do not simultaneously represent a hydrogen atom, • r and s, which can be the same or different, are integers between 1 and 6, • q is equal to 0 or to an integer between 1 and 34, • X- denotes an anion, such as a halide, • A denotes a dihalide radical or preferentially represents -CH2-CH2-O-CH2-CH2-.

[0138] (2) Quaternary polymers of vinylpyrrolidone and vinylimidazole, by for example, the products sold under the names Luviquat® FC 905, FC 550 and FC 370 by the company BASF.

[0139] (3) Polyamines such as Polyquart® H sold by Cognis, referenced under the name Polyethylene Glycol (15) Tallow Polyamine in the CTFA dictionary.

[0140] (4) Polymers comprising in their structure:

[0141] (a) one or more motifs corresponding to formula (A) below: nh2

[0142] (b) optionally, one or more patterns corresponding to formula (B) below below: GHG H ---- * | (B) NH—CH HO

[0143] In other words, these polymers can be chosen in particular from homopolymers or copolymers comprising one or more motifs derived from vinylamine and optionally one or more motifs derived from vinylformamide.

[0144] Preferably, these cationic polymers are chosen from polymers comprising, in their structure, from 5% to 100% of motifs corresponding to formula (A) and from 0 to 95% of motifs corresponding to formula (B), preferably from 10% to 100% of motifs corresponding to formula (A) and from 0 to 90% of motifs corresponding to formula (B).

[0145] The average molecular mass by weight of said polymer, measured by light scattering, can range from 1000 to 3,000,000 g / mol, preferably from 10,000 to 1,000,000 g / mol and more particularly from 100,000 to 500,000 g / mol.

[0146] Other cationic polymers that can be used in the context of the invention are cationic proteins or cationic protein hydrolysates, polyalkyleneimines, in particular polyethyleneimines, polymers comprising vinylpyridine or vinylpyridinium motifs, polyamine and epichlorohydrin condensates, quaternary polyureylenes and chitin derivatives.

[0147] Preferably, the cationic polymers are chosen from the polymers of the families (1), (2), (7) (8) and (10) mentioned above, preferably families (7) and (8).

[0148] Among the cationic polymers mentioned above, those that can be preferentially used are cationic cyclopolymers, in particular homopolymers or copolymers of dimethyldiallylammonium salt (for example chloride), sold under the names Merquat 100, Merquat 550 and Merquat S by the Nalco company, hexadimethrin chloride and their mixtures.

[0149] The dye composition according to the invention may comprise cationic and / or amphoteric polymers in an amount between 0.01% and 5% by weight, in particular from 0.05% to 3% by weight and preferably from 0.1% to 2% by weight, relative to the dye composition.

[0150] The dye composition according to the invention may comprise amphoteric polymers in an amount between 0.01% and 5% by weight, in particular from 0.05% to 3% by weight and preferably from 0.1% to 2% by weight, relative to the dye composition.

[0151] According to a specific embodiment, at least the fatty acid and at least the cationic and / or amphoteric polymers are present in a fatty acid / cationic and / or amphoteric polymer ratio ranging from 0.2 to 4, preferably from 0.3 to 3.5 and most preferably from 0.4 to 3.

[0152] Fatty substances other than fatty acids

[0153] The dye composition according to the invention comprises one or more fats other than fatty acids, the total content of fats other than fatty acids being greater than or equal to 10% by weight of the weight of the dye composition.

[0154] By other than fatty acids, we mean other than free fatty acids and neutralized fatty acids.

[0155] The term "fatty substance" refers to an organic compound insoluble in water at 25 °C and atmospheric pressure (1.013 x 10⁵ Pa) (solubility less than 5% by weight, preferably less than 1% by weight, even more preferably less than 0.1% by weight). Its structure includes at least one hydrocarbon chain comprising at least 6 carbon atoms and / or a sequence of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same conditions of temperature and pressure, for example, chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly or decamethylcyclopentasiloxane.

[0156] The fatty substances that can be used in the present invention are neither (poly)oxyalkylated nor (poly)glycerolated.

[0157] Preferably, the fatty substances that can be used according to the invention are non-silicone fatty substances.

[0158] The expression "non-silicone fatty substance" means a fatty substance not containing Si-O bonds and the expression "silicone fatty substance" means a fatty substance containing at least one Si-O bond.

[0159] The useful fatty substances according to the invention may be liquid fatty substances (or oils) and / or solid fatty substances. The expression "liquid fatty substance" refers to a fatty substance whose melting point is less than or equal to 25 °C at atmospheric pressure (1.013 x 10⁵ Pa) and the expression "solid fatty substance" refers to a fatty substance whose melting point is greater than 25 °C at atmospheric pressure (1.013 x 10⁵ Pa).

[0160] For the purposes of the present invention, the melting point corresponds to the temperature of the most endothermic peak observed in the 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 this patent application, all melting points are determined at atmospheric pressure (1.013 x 1.05 Pa).

[0161] More particularly, the liquid fatty substance(s) according to the invention are chosen from C6 to C16 liquid hydrocarbons, liquid hydrocarbons comprising more than 16 carbon atoms, non-silicone oils of animal origin, triglyceride-type oils of vegetable or synthetic origin, fluorinated oils, liquid fatty alcohols, liquid esters of fatty acids and / or fatty alcohols other than triglycerides, and mixtures thereof.

[0162] It is recalled that fatty alcohols and esters more particularly contain at least one hydrocarbon-based group, saturated or unsaturated, linear or branched, comprising from 6 to 40 and preferably from 8 to 30 carbon atoms, which is optionally substituted, in particular, by one or more hydroxyl groups (in particular from 1 to 4). If they are unsaturated, these compounds may comprise one to three conjugated or non-conjugated carbon-carbon double bonds.

[0163] With regard to liquid hydrocarbons in the C6 to C16 range, these may be linear, branched, or optionally cyclic, and are preferentially chosen from among the alkanes. Examples that may be cited include hexane, cyclohexane, undecane, dodecane, isododecane, tridecane, or isoparaffins, such as isohexadecane or isodecane, and mixtures thereof.

[0164] Liquid hydrocarbons comprising more than 16 carbon atoms may be linear or branched, and of mineral or synthetic origin, and are preferably chosen from liquid paraffins or liquid petroleum jelly (or mineral oil), polydecenes, hydrogenated polysiobutene such as Parleam® and their mixtures.

[0165] One oil based on hydrocarbons of animal origin that may be cited is perhydrosqualene.

[0166] Triglyceride oils of vegetable or synthetic origin are preferably selected from among liquid fatty acid triglycerides comprising 6 to 30 carbon atoms, for example heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, cucurbit oil, grapeseed oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, arara oil, castor oil, avocado oil, caprylic / capric acid triglycerides, for example those sold by Stéarinerie Dubois or those sold under the names Miglyol® 810, 812 and 818 by Dynamit Nobel, jojoba oil and shea butter oil, and their mixtures.

[0167] Regarding fluorinated oils, they 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 tetrafluorohexane, 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.

[0168] Liquid fatty alcohols suitable for use in the invention are particularly chosen from linear or branched, saturated or unsaturated alcohols, preferably unsaturated or branched alcohols, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. These fatty alcohols are neither oxyalkylated nor glycerolated. Examples that may be cited include octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, isostearyl alcohol, oleyl alcohol, linolenylic alcohol, alcohol Ricinoleyl alcohol, undecylenyl alcohol, and linoleyl alcohol, and mixtures thereof. Preferably, oleyl alcohol will be used.

[0169] With regard to liquid esters of fatty acids and / or fatty alcohols, other than the triglycerides mentioned above, examples may include esters of saturated or unsaturated aliphatic mono- or polyacids, linear in Cl to C26 or branched in C3 to C26, and of saturated or unsaturated aliphatic mono- or polyalcohols, 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 and more advantageously greater than or equal to 10.

[0170] Preferably, for monoalcohol esters, at least one of the alcohol and the acid is branched.

[0171] Among the monoesters, the following may be mentioned: dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl acetyl ricinoleate; octyl isononanoate; 2-ethylhexyl isononate; octyldodecyl erucate; oleyl erucate; ethyl palmitate, isopropyl palmitate; 2-ethylhexyl palmitate, 2-octyldecyl palmitate; alkyl myristates such as 2-octyldodecyl isopropyl myristate, isobutyl stearate; 2-hexyldecyl laurate and mixtures thereof.

[0172] Preferably, among monoesters of monoacids and monoalcohols, ethyl palmitate and isopropyl palmitate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate, and mixtures thereof, shall be used.

[0173] Esters of dicarboxylic or tricarboxylic acids in C4 to C22 and of alcohols in Cl to C22 and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and of dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols in C2 to C26 may also be used.

[0174] Examples include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate; tridecyl erucate; triisopropyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; dioctanoate propylene glycol; neopentyl glycol diheptanoate; diethylene glycol diisononanoate and polyethylene glycol distearates and their mixtures.

[0175] The tincture composition may also include, as a fatty ester, sugar esters and diesters of fatty acids in the C6 to C30 range and preferably C12 to C22. It should be noted that the term "sugar" refers to oxygen-bearing hydrocarbon compounds containing several alcohol functional groups, with or without aldehyde or ketone functional groups, and which include at least four carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides other than the anionic polysaccharides described above.

[0176] Examples of suitable sugars that may be mentioned include sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, and lactose and their derivatives, including alkyl derivatives, such as methyl derivatives, for example methylglucose.

[0177] Sugar esters of fatty acids may be selected in particular from the group comprising the esters or mixtures of esters of sugars described above and of linear or branched fatty acids, saturated or unsaturated in C6 to C30 and preferably in C12 to C22. If they are unsaturated, these compounds may comprise one to three conjugated or non-conjugated carbon-carbon double bonds.

[0178] Esters can also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0179] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates, arachidonates or mixtures thereof, in particular such as mixed esters of oleopalmitate, oleostearate and palmitostearate

[0180] More particularly, monoesters and diesters are used, and in particular mono- or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates of sucrose, glucose or methylglucose, and mixtures thereof.

[0181] An example that can be cited is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0182] Preferably, a liquid ester of a monoacid and a monoalcohol will be used.

[0183] According to one embodiment, the fatty substances which are useful according to the invention are chosen from liquid fatty substances, preferably from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols and liquid fatty esters, and mixtures thereof, more preferably from liquid fatty alcohols.

[0184] Preferably, the liquid fatty substance(s) are chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils and mixtures thereof.

[0185] Solid fatty substances preferentially have a viscosity greater than 2 Pa.s, measured at 25 °C and at a shear rate of 1 s-1.

[0186] The solid fatty substance(s) are preferably chosen from solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides and mixtures thereof.

[0187] The term "fatty alcohol" refers to 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.

[0188] Solid fatty alcohols may be saturated or unsaturated, linear or branched, and include 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 still from 10 to 30, or even from 12 to 24 atoms, and even better from 14 to 22 carbon atoms.

[0189] The solid fatty alcohols that can be used are preferably chosen from saturated or unsaturated, linear or branched (mono)alcohols, preferably linear and saturated, including 8 to 40 carbon atoms, better still 10 to 30, or even 12 to 24 atoms, and even better 14 to 22 carbon atoms.

[0190] The solid fatty alcohols that may be used may be selected, alone or in mixture, from: 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).

[0191] Preferably, the solid fatty alcohol is selected from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, arachidyl 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.

[0192] The solid esters of a fatty acid and / or a fatty alcohol that can be used are preferably chosen from esters derived from a C9-C26 carboxylic fatty acid and / or a C9-C26 fatty alcohol.

[0193] Preferably, these solid fatty acid esters are esters of a linear or branched saturated carboxylic acid, including at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms, and of a linear or branched saturated monoalcohol, including at least 10 carbon atoms, Preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. Saturated carboxylic acids may optionally be hydroxylated and are preferentially monocarboxylic acids.

[0194] Esters of C4-C22 dicarboxylic or tricarboxylic acids and C1-C22 alcohols and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and C2-C26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0195] 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, di-n-propyl adipate, dioctyl adipate, Dioctyl maleate, octyl palmitate, myristyle palmitate, cetyl palmitate, stearyl palmitate, and mixtures thereof.

[0196] Preferably, the solid esters of a fatty acid and / or a fatty alcohol are selected from C9-C26 alkyl palmitates, in particular myristyle palmitate, cetyl palmitate or stearyl palmitate; C9-C26 alkyl myristates, such as cetyl myristate, stearyl myristate and myristyle myristate; C9-C26 alkyl stearates, in particular myristyle stearate, cetyl stearate and stearyl stearate; and mixtures thereof.

[0197] For the purposes of the present invention, a wax is a lipophilic compound that is solid at 25 °C and atmospheric pressure, with a reversible solid / liquid phase change, a melting point above approximately 40 °C, which can reach 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 bringing the wax to its melting point, it is possible to make it miscible with oils and form a microscopically homogeneous mixture, but upon returning the mixture to room temperature, recrystallization of the wax occurs, which is detectable both microscopically and macroscopically (opalescence).

[0198] In particular, waxes suitable for use in the invention may be chosen from waxes of animal, vegetable or mineral origin, non-silicone synthetic waxes and mixtures thereof.

[0199] Examples include hydrocarbon-based waxes, for example beeswax, particularly of organic origin, lanolin wax and Chinese insect waxes; rice bran wax, camauba wax, candelilla wax, ouricury wax, esparto grass wax, berry wax, lacquer wax, Japanese wax and wax of sumac; lignite wax, orange wax and lemon wax, microcrystalline waxes, paraffins and ozokerite; polyethylene waxes, waxes obtained by Fischer-Tropsch synthesis and waxy copolymers, as well as their esters.

[0200] We can also mention C20 to C60 microcrystalline waxes, such as Microwax HW.

[0201] We can also mention the MW 500 polyethylene wax sold under the reference Permalen 50-L polyethylene.

[0202] Also of note are waxes obtained by catalytic hydrogenation of animal or vegetable oils containing linear or branched fatty chains in the C8 to C32 range. Among these waxes, one can cite in particular isomerized jojoba oil, such as trans-isomerized partially hydrogenated jojoba oil, in particular the product manufactured or sold by Desert Whale under the trade name Iso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated lanolin oil and bis(l,l,l-trimethylolpropane tetrastearate), in particular the product sold under the name Hest 2T-4S® by Heterene.

[0203] Waxes obtained by hydrogenation of esterified castor oil with cetyl alcohol, such as those sold under the names Phytowax Castor 16L64® and 22L73® by the company Sophim, may also be used.

[0204] Another wax that can be used is a C20 to C40 alkyl (hydroxystearyloxy)stearate (the alkyl group containing 20 to 40 carbon atoms), alone or in a mixture. Such a wax is notably sold under the names "Kester Wax K 82 P®", "Hydropolyester K 82 P®" and "Kester Wax K 80 P®" by the company Koster Keunen.

[0205] It is also possible to use micro-waxes in the compositions of the invention;Examples include carnauba micro-waxes, such as the product sold under the name MicroCare 350® by Micro Powders; synthetic wax micro-waxes, such as the product sold under the name MicroEase 114S® by Micro Powders; micro-waxes made from a mixture of carnauba wax and polyethylene wax, such as the products sold under the names Micro Care 300® and 310® by Micro Powders; micro-waxes made from a mixture of carnauba wax and synthetic wax, such as the product sold under the name Micro Care 325® by Micro Powders; polyethylene micro-waxes, such as the products sold under the names Micropoly 200®, 220L®, and 250S® by Micro Powders; and polytetraethylene micro-waxes, such as the product sold under the name Microslip 519®. and 519 L® by the company Micro Powders. ;

[0206] The waxes are preferably chosen from mineral waxes, for example paraffin, petroleum jelly, lignite or ozokerite wax; vegetable waxes, for example cocoa butter or cork or sugar cane fiber waxes, olive wax, rice wax, hydrogenated jojoba wax, ouricury wax, camauba wax, candelilla wax, alfa wax or absolute flower waxes, such as blackcurrant flower essential wax sold by the Bertin company (France); waxes of animal origin, for example beeswax or modified beeswax (cera bellina), spermaceti, lanolin wax and lanolin derivatives; microcrystalline waxes; and mixtures thereof.

[0207] 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.

[0208] The ceramides or their analogues that may be used preferably correspond to the following formula: R3CH(OH)CH(CH2OR2)(NHCOR1), in which:

[0209] RI designates a linear or branched alkyl group, 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 Cl6-C30 fatty acid;

[0210] R2 denotes a hydrogen atom, a (glycosyl)n group, a (galactosyl)m group or a sulfogalactosyl group, in which n is an integer from 1 to 4 and m is an integer from 1 to 8;

[0211] R3 designates a C15-C26 hydrocarbon-based group, saturated or unsaturated in the alpha position, this group being able to be substituted by one or more alkyl groups in C1-C14; it being understood that in the case of natural ceramides or glycoceramides, R3 may also designate a C15-C26 alpha-hydroxyalkyl group, the hydroxyl group being optionally esterified by a C16-C30 alpha-hydroxy acid.

[0212] Ceramides that are most particularly preferred are compounds for which RI denotes a saturated or unsaturated alkyl derived from C16-C22 fatty acids; R2 denotes a hydrogen atom and R3 denotes a linear saturated C15 group.

[0213] Preferably, ceramides are used in which RI designates a saturated or unsaturated alkyl group derived from C14-C30 fatty acids; R2 designates a galactosyl or sulfogalactosyl group; and R3 designates a -CH=CH-(CH2)12-CH3 group.

[0214] Compounds can also be used in which RI represents a saturated or unsaturated alkyl radical derived from C12-C22 fatty acids; R2 designates a galactosyl or sulfogalactosyl radical and R3 designates a saturated or unsaturated radical based on C12-C22 hydrocarbons and preferably a -CH=CH-(CH2)12-CH3 group.

[0215] As particularly preferred compounds, we may also mention 2-N-linoleoylaminooctadecane-l,3-diol; 2-N-oleoylaminooctadecane-l,3-diol; 2-N-palmitoylaminooctadecane-l,3-diol; 2-N-stearoylaminooctadecane-l,3-diol; 2-N-behenoylaminooctadecane-1,3-diol; 2-N-[2-hydroxypalmitoyl]aminooctadecane-1,3-diol; 2-N-stearoylaminooctadecane-1,3,4-triol and in particular N-stearoylphytosphingosine, 2-N-palmitoyinohexadecane-1,3-diol, N-linoleyldihydrosphingosine, N-oleoyldihydrosphingosine, N-oleoyldihydrosphingosine, N-palmitohydrosphingosine, N-stearoyldihydrosphingosine, and N-behenoyldihydrosphingosine, N-docosanoyl-N-methyl-D-glucamine, N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide of cetyl acid, and bis(N-hydroxyethyl-N-cetyl)malonamide; and mixtures thereof. N-Oleoyldihydrosphingosine will be used preferentially.

[0216] Solid fatty substances are preferably chosen from solid fatty alcohols, in particular from cetyl alcohol, stearyl alcohol and their mixtures such as cetylstearyl or cetearyl alcohol.

[0217] Butters can also be used.

[0218] For the purposes of the present invention, the term "butter" (also referred to as "pasty fat") designates a lipophilic fatty compound with a reversible solid / liquid phase change, comprising, at a temperature of 25 °C and atmospheric pressure (760 mmHg), 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.

[0219] 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 JUNE 2000, DOI: 10.1002 / 14356007.al0_173, point 13.2.2.2. Shea Butter, Borneo Tallow, and Related Fats (Vegetable Butters)).

[0220] Particular examples include shea butter, Nilotica shea butter (Butyrospermum parkii), galam butter (Butyrospermum parkii), Borneo butter or fat or tengkawang tallow (Shorea stenoptera), shorea butter, illipe butter, madhuca butter or bassia madhuca longifolia butter, mowrah butter (Madhuca latifolia), katiau butter (Madhuca mottleyana), phulwara butter (M.butyracea), mango butter (Mangifera indica), murumuru butter (Astrocaryum murumuru), kokum butter (Garcinia indica), ucuuba butter (Virola sebifera), tucuma butter, Painya (Kpangnan) butter (Pentadesma butyracea), coffee butter (Coffea arabica), apricot butter (Prunus armiaca), macadamia butter (Macadamia temifolia), grape seed butter (Vitis vinifera), avocado butter (Persea gratissima), olive butter (Olea europaea), sweet almond butter (Prunus amygdalus dulcis), cocoa butter and sunflower butter.

[0221] According to another preferred embodiment, the fatty substances other than fatty acids that are useful according to the invention are chosen from solid fatty substances, preferably chosen from solid fatty alcohols.

[0222] The total content of fat(s) other than fatty acids shall preferably be from 10% to 40% by weight, more preferably from 12% to 30% by weight and even better from 15% to 25% by weight in relation to the total weight of the dye composition.

[0223] Preferably, the dye composition according to the invention comprises at least one solid fatty substance other than fatty acids, preferably selected from solid fatty alcohols, solid fatty acid and / or fatty alcohol esters, waxes, ceramides and mixtures thereof, preferably from solid fatty alcohols and mixtures thereof, in particular selected from cetyl alcohol, stearyl alcohol and mixtures thereof, such as cetylstearyl alcohol or cetearyl alcohol.

[0224] When the dye composition according to the invention comprises one or more solid fats other than fatty acids, the total content of solid fat(s) other than fatty acids, preferably chosen from solid fatty alcohols, is preferably from 10% to 40% by weight, more preferably from 12% to 30% by weight and better still from 15% to 25% by weight, relative to the total weight of the dye composition.

[0225] Preferably, the dye composition according to the invention comprises at least one liquid fatty substance other than fatty acids, preferably selected from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols and liquid fatty esters, silicone oils and mixtures thereof, more preferably selected from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils and mixtures thereof.

[0226] When the dye composition according to the invention comprises one or more liquid fats other than fatty acids, the total content of liquid fat(s) other than fatty acids is preferably from 0.1% to 15% by weight, more preferably from 1% to 10% by weight and better still from 3% to 8% by weight, relative to the total weight of the dye composition.

[0227] According to a preferred embodiment, the dye composition according to the invention comprises one or more solid fat substances other than fatty acids, preferably chosen from solid fatty alcohols and one or more liquid fat substances other than fatty acids, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils and mixtures thereof.

[0228] Polyols

[0229] The dye composition according to the invention also comprises one or more polyols.

[0230] For the purposes of the present invention, the term "polyol" means an organic compound consisting of a hydrocarbon-based chain optionally interrupted by one or more oxygen atoms and bearing at least two free hydroxyl groups (-OH) on different carbon atoms, this compound being optionally cyclic or acyclic, linear or branched and saturated or unsaturated.

[0231] Preferably, polyols are different from fatty alcohols as defined above.

[0232] Polyols are notably different from non-ionic surfactants.

[0233] Polyols are different from tints.

[0234] More particularly, the polyol(s) comprise from 2 to 30 hydroxyl groups, more preferably from 2 to 10 hydroxyl groups, even more preferably from 2 to 3 hydroxyl groups, preferably 2 hydroxyl groups.

[0235] The polyol(s) are preferentially chosen from among the diols, more preferentially from among the C3-C6 diols.

[0236] The polyols are preferably chosen from propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, and mixtures thereof, preferably from propylene glycol, propane-1,3-diol and mixtures thereof, and even better propylene glycol.

[0237] Preferably, the dye composition comprises one or more diols selected from propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sugars, such as glucose, and mixtures thereof, preferably from propylene glycol, propane-1,3-diol and mixtures thereof, and preferably propylene glycol.

[0238] Preferably, the dye composition comprises propylene glycol.

[0239] Advantageously, the total amount of polyols ranges from 0.5% to 15% by weight, in particular from 1% to 10% by weight and preferably from 2% to 8% by weight, relative to the total weight of the dye composition.

[0240] More advantageously, the total amount of propylene glycol ranges from 0.5% to 15% by weight, in particular from 1% to 10% by weight and preferably from 2% to 8% by weight, relative to the total weight of the dye composition.

[0241] Dye precursors

[0242] The dye composition according to the invention comprises one or more oxidation bases. Oxidation bases

[0243] By way of example, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, solvates and solvates of their salts.

[0244] Among the para-phenylenediamines that may be mentioned are, for example, 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([3-hydroxyethyl)amino-2-chloroaniline, 2-[3-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-([3-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-[α-hydroxyethylamino-5-aminotoluene and 3-hydroxy-γ-(4'-aminophenyl)pyrrolidine, and the corresponding addition salts with an acid, the solvates and the solvates of their salts.

[0245] Among the para-phenylenediamines mentioned above, particular preference is given to para-phenylenediamine, para-toluenediamine, 2-isopropyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-[3-hydroxyethyloxy-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-γ-hydroxypropyl-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 salts of corresponding addition with an acid, the solvates and the solvates of their salts.

[0246] Among the bis(phenyl)alkylenediamines that may be cited are, for example, N,N'-bis(P-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 the corresponding addition salts, the solvates and the solvates of their salts.

[0247] Among the para-aminophenols cited are, for example, 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-([3-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol, and the corresponding addition salts with an acid, the solvates and the solvates of their salts.

[0248] Examples of ortho-aminophenols that may be cited include 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol, and the corresponding addition salts, solvates and solvates of their salts.

[0249] Examples of heterocyclic bases that can be cited include pyridine, pyrimidine and pyrazole derivatives.

[0250] Among the pyridine derivatives that may be cited are the compounds described, for example, 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 their corresponding addition salts, solvates and solvates of their salts.

[0251] Other pyridine oxidation bases that are useful in the present invention are the 3-aminopyrazolo[l,5-a]pyridine oxidation bases or their addition salts described, for example, in patent application FR 2 801 308. Examples that may be cited include pyrazolo[l,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[l,5-a]pyrid-3-ylamine, 2-(morpholin-4-yl)pyrazolo[l,5-a]pyrid-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-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-yl)pyrazolo[l,5-a]pyrid-3-ylamine, pyrazolo[l,5- a]pyridine-3,5-diamine, 5-(morpholin-4-yl)pyrazolo[l,5-a]pyrid-3-ylamine, 2-[(3-aminopyrazolo[l,5-a]pyrid-5-yl)(2-hydroxyethyl)amino]ethanol, 2-[(3-aminopyrazolo[1,5-a]pyrid-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-5-ol, 3-aminopyrazolo[l,5-a]pyridin-4-ol, 3-aminopyrazolo[l,5-a]pyridin-6-ol, 3-aminopyrazolo[l,5-a]pyridin-7-ol, 2-[3-hydroxyethoxy-3-aminopyrazolo[l,5-a]pyridine and 2-(4-dimethylpiperazinium-l-yl)-3-aminopyrazolo[l,5-a]pyridine, and the corresponding addition salts, solvates and solvates of their salts.

[0252] More particularly, the oxidation bases that are useful in the present invention are chosen from among the 3-aminopyrazolo[l,5-a]pyridines and preferably substituted on the carbon atom 2 by:

[0253] a) a (di)(Ci-C6)(alkyl)amino group, said alkyl group optionally being substituted by at least one hydroxyl, amino or imidazolium group;

[0254] b) an optionally cationic heterocycloalkyl group of 5 to 7 members comprising 1 to 3 heteroatoms, optionally substituted by one or more (Ci-C6) alkyl groups, such as a di(Ci-C4)alkylpiperazinium group; or

[0255] b) an alkoxy group (in Ci-C6) optionally substituted by one or more hydroxyl groups, such as a [3-hydroxyalkoxy group, and the corresponding addition salts, the solvates and the solvates of their salts.

[0256] Among the pyrimidine derivatives that may be cited 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 and their tautomeric forms, where a tautomeric equilibrium exists.

[0257] Among the pyrazole derivatives that may be cited are the compounds described in patents DE 3843892 and DE 4133957 and patent applications WO 94 / 08969, WO 94 / 08970, FR-A-2 733 749 and DE 195 43 988, for example 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-l-methyl-3-phenylpyrazole, 4-amino-l,3-dimethyl-5-hydrazinopyrazole, l-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-1-methylpyrazole, 4,5-diamino-1-tert-butyl-3-methylpyrazole, 4,5-diamino-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-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-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, and 3,5-Diamino-4-([3-hydroxyethyl)amino-L-methylpyrazole, and the corresponding addition salts, solvates, and solvates of their salts. 4,5-Diamino-L-(|3-Methoxyethyl)pyrazole may also be used.

[0258] A 4,5-diaminopyrazole shall preferably be used and even more preferably 4,5-diamino-l-([3-hydroxyethyl)pyrazole and / or a corresponding salt, the solvates and the solvates of their salts.

[0259] Pyrazole derivatives that may also be cited include diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and the corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-l-yl)-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-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-l-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-lH,6H-pyridazino[l,2-a]pyrazol-l-one, 4-amino-l,2-diethyl-5-(pyrrolidine-l-yl)-l,2-dihydropyrazol-3-one,4-amino-5-(3-dimethylaminopyrrolidin-1 -yl)-1,2-diethyl-1,2-dihydropyrazol-3-one and 2,3-diamino-, 6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one.

[0260] Preferably, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and / or a corresponding salt, the solvates and the solvates of their salts will be used.

[0261] Preferably, as heterocyclic bases, 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-aminopyrazolo[l,5-a]pyridine and / or a corresponding salt will be used.

[0262] These compounds may also be present in solvated form.

[0263] The addition salts of oxidation bases that may be present in the compositions according to the invention are in particular selected 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, aqueous ammonia, amines or alkanolamines.

[0264] Moreover, the solvates of the additional oxidation bases represent more particularly the hydrates of said oxidation bases and / or the combination thereof Oxidation bases with a linear or branched C1 to C4 alcohol such as methanol, ethanol, isopropanol, or n-propanol. Preferably, the solvates are hydrates.

[0265] Preferably, the oxidation base(s) are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, and mixtures thereof; more preferably from 2-methoxymethyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, their addition salts, their solvates, the solvates of their salts and mixtures thereof.

[0266] Preferably, the dye composition according to the invention is free from oxidation bases selected from para-phenylenediamine, para-toluenediamine, their addition salts, their solvates and the solvates of their salts.

[0267] The oxidation base(s) are preferably present in a content ranging from 0.001% to 20% by weight, more preferably from 0.005% to 15% by weight, more preferably from 0.01% to 10% by weight, better still from 0.05% to 5%, even better from 0.1% to 3% by weight, relative to the weight of the dye composition.

[0268] According to a preferred embodiment, the oxidation base(s) selected from 2-methoxymethyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, their addition salts, and mixtures thereof are present in a content ranging from 0.001% to 20% by weight, more preferably from 0.005% to 15% by weight, more preferably from 0.01% to 10% by weight, better still from 0.05% to 5%, better still from 0.1% to 3% by weight, relative to the weight of the dye composition. Oxidation couplers

[0269] The dye composition according to the present invention comprises at least one oxidation coupler selected from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), one of its addition salts, its solvates and / or the solvates of its salts: H. XHXiWH ® N • ' 0

[0270] The addition salts of the compounds of formula (I) are selected in particular 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 hydroxide sodium, potassium hydroxide, aqueous ammonia, amines or alkanolamines.

[0271] Moreover, the solvates of the compounds of formula (I) more particularly represent the hydrates of these compounds and / or the combination of these compounds with a linear or branched C1 to C4 alcohol such as methanol, ethanol, isopropanol or n-propanol. Preferably, the solvates are hydrates.

[0272] The total content of coupler(s) selected from hydroxyethyl 1-3,4-methylenedioxyaniline of formula (I), one of its addition salts, its solvates and / or the solvates of its salts shall preferably be from 0.001% to 20% by weight, more preferably from 0.005% to 15% by weight, more preferably from 0.01% to 10% by weight, better still from 0.05% to 5%, better still from 0.1% to 3% by weight, relative to the total weight of the dye composition.

[0273] The dye composition according to the invention may optionally also include one or more additional couplers different from the compound of formula (I) and its addition salts, its solvates and / or the solvates of its salts, advantageously chosen from those traditionally used in dyeing keratinous fibers.

[0274] Among the additional couplers, particular examples include meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based coupling agents and heterocyclic coupling agents other than hydroxyethyl-3,4-methylenedioxyaniline, and also the corresponding addition salts.

[0275] Examples include 6-hydroxybenzomorpholine, 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-([3-hydroxyethyloxy)benzene, 2-amino-4-([3-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, α-naphtol, 2-methyl-1-naphtol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 3,5-diamino-2,6-dimethoxypyridine, 2,6-bis([3-hydroxyethylamino)toluene, 6-hydroxyindoline, 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, 2-amino-5-ethylphenol, 5-N-([3-hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 3-amino-2-chloro-6-methylphenol, the corresponding addition salts with an acid, and the corresponding mixtures.

[0276] In a particular embodiment, the dye composition according to the invention is free of oxidation couplers selected from resorcinol, the 2- methylresorcinol, 4-chlororesorcinol, their addition salts, their solvates and the solvates of their salts.

[0277] In general, the addition salts of the additional couplers that can be used in the context of the invention are chosen in particular 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, aqueous ammonia, amines or alkanolamines.

[0278] When the dye composition includes one or more additional oxidation couplers, the total content of additional coupler(s) differs from that of the couplers of formula (II), its salts, its solvates and the solvates of its salts that are present in the dye composition according to the invention, preferably from 0.001% to 20% by weight, preferably from 0.005% to 15% by weight, more preferably from 0.01% to 10% by weight, better still from 0.05% to 5%, better still from 0.1% to 3% by weight, relative to the total weight of the dye composition.

[0279] Advantageously, the weight ratio between the total content of oxidation base and the total content of oxidation coupler selected from hydroxyethyl-3,4-methylenedioxyaniline of formula (II), one of its addition salts, its solvates and / or the solvates of its salts is between 0.1 and 10, preferably between 0.5 and 5.

[0280] Advantageously, the weight ratio between the total content of oxidation base(s) and the total content of coupler(s) is between 0.1 and 10, preferably between 0.3 and 3. Associative polymers

[0281] According to one embodiment, the dye composition of the invention may contain one or more associative polymers.

[0282] Preferably, the dye composition of the invention comprises one or more associative polymers.

[0283] For the purposes of the present invention, the expression "associative polymers" means water-soluble polymers which are capable, in aqueous media, of combining reversibly with each other or with other molecules.

[0284] Their chemical structure includes at least one hydrophilic region and at least one hydrophobic region characterized by at least one C8-C30 fatty chain.

[0285] The associative polymers according to the invention can be of anionic, cationic, amphoteric or non-ionic type.

[0286] Preferably, the dye composition comprises one or more non-ionic associative polymers.

[0287] Non-ionic associative polymers are preferably selected from:

[0288] (1) celluloses modified by groups comprising at least one fatty chain;

[0289] Examples that can be cited include: • Hydroxyethylcelluloses modified by groups comprising at least one fatty chain, such as linear or branched alkyl, linear or branched arylalkyl, or linear or branched alkylaryl groups, or mixtures thereof, and in which the linear or branched alkyl groups are preferentially C8-C22, for example, the product Natrosol Plus Grade 330 CS® (alkyl in Cl6) sold by Aqualon, the product Polysurf 67 CS (cetylhydroxyethylcellulose) sold by Ashland, or the product Bermocoll EHM 100® sold by Berol Nobel, • Hydroxyethylcelluloses modified with alkylphenyl polyalkylene glycol ether groups, such as the Amercell Polymer HM-1500® product (polyethylene glycol (15) nonylphenyl ether) sold by the Amerchol company, • Hydroxypropyl methylcelluloses modified by linear or branched C8-C22 alkyl groups, for example the product Sangelose 60L (INCI name: hydroxypropyl methylcellulose stearoxy ether) sold by the company Daido Chemical,

[0290] (2) hydroxypropyl guars modified by groups comprising at least one fatty chain, such as the product Esaflor HM 22® (C22 alkyl chain) sold by the company Lamberti, and the products RE210-18® (C14 alkyl chain) and RE205-1® (C20 alkyl chain) sold by the company Rhone-Poulenc,

[0291] (3) copolymers of vinylpyrrolidone and hydrophobic chain monomers fat; examples that can be cited include: • the Antaron V216® and Ganex V216® products (vinylpyrrolidone / hexadecene copolymer) sold by the company ISP. • the products Antaron V220® and Ganex V220® (vinylpyrrolidone / eicosene copolymer) sold by ISP,

[0292] (4) methacrylate or alkyl acrylate copolymers in C1-C6 and amphiphilic monomers comprising at least one fatty chain, for example the oxyethylenated methyl acrylate / stearyl acrylate copolymer sold by the Goldschmidt company under the name Antil 208®,

[0293] (5) copolymers of hydrophilic methacrylates or acrylates and monomers hydrophobic compounds comprising at least one fatty chain, for example polyethylene glycol / lauryl methacrylate copolymer,

[0294] (6) polyurethane polyethers comprising in their chain both blocks hydrophilic blocks, usually of a polyoxyethylenated nature, and hydrophobic blocks, which can be aliphatic sequences alone and / or cycloaliphatic and / or aromatic sequences,

[0295] (7) polymers with an aminoplastic ether backbone containing at least one fatty chain, such as the Pure Thix® compounds sold by the company Sud-Chemie.

[0296] Preferably, the polyether polyurethanes comprise at least two lipophilic hydrocarbon-based chains containing 6 to 30 carbon atoms, separated by a hydrophilic block. The hydrocarbon-based chains may be dangling chains or chains at the ends of the hydrophilic block. In particular, one or more dangling chains may be included. Furthermore, the polymer may comprise a hydrocarbon-based chain at one or both ends of a hydrophilic block.

[0297] Polyurethane polyethers can be multi-sequenced, particularly in tri-sequenced form. The hydrophobic blocks can be at each end of the chain (e.g., a tri-sequenced copolymer with a central hydrophilic block) or distributed both at the ends and in the chain (e.g., a multi-sequenced copolymer). These same polymers can also be grafted polymers or star polymers.

[0298] Nonionic fatty-chain polyurethane polyethers can be tri-sequenced copolymers, in which the hydrophilic block is a polyoxyethylenated chain comprising 50 to 1000 oxyethylene groups. Nonionic polyurethane polyethers include a urethane linkage between the hydrophilic blocks, hence the name.

[0299] By extension, also included among non-ionic fat-chain polyether polyurethanes are those in which the hydrophilic blocks are linked to the lipophilic blocks via other chemical bonds.

[0300] As examples of non-ionic fatty chain polyether polyurethanes that can be used in the invention, it is also possible to use Rheolate 205® containing a urea function, sold by the company Rheox, or Rheolate® 208, 204 or 212, and also Acrysol RM 184®.

[0301] We can also mention the product Elfacos T210® containing a C12-14 alkyl chain, and the product Elfacos T212® containing a C[8] alkyl chain, from Akzo.

[0302] Rohm & Haas product DW 1206B® containing a C2o alkyl chain and a urethane bond, sold at a dry matter content of 20% in water, can also be used.

[0303] It is also possible to use solutions or dispersions of these polymers, particularly in water or in aqueous-alcoholic media. Examples of such polymers that can be cited are Rheolate® 255, Rheolate® 278 and Rheolate® 244, which are sold by Rheox. The DW 1206F and DW 1206J products sold by Rohm & Haas can also be used.

[0304] We can also mention Luvigel Star (polyurethane-39) sold by BASF, which is a copolymer of PEG-140 and hexamethylene diisocyanate terminated by pareth-10 in Cn u, pareth-11 in CX6_i8 and pareth-11 in Ci8_2o-

[0305] Polyurethane polyethers which can be used according to the invention are in particular those described in the article by G. Fonnum, J. Bakke and Fk. Hansen - Colloid Polym. Sci. 271, 380-389 (1993).

[0306] More particularly, according to the invention, it is preferable to use a polyether polyurethane which can be obtained by polycondensation of at least three compounds comprising: i. at least one polyethylene glycol comprising 150 to 180 moles of ethylene oxide, ii. stearyl alcohol or decyl alcohol and iii. at least one diisocyanate.

[0307] Such polyurethane polyethers are sold in particular by the company Rohm & Haas under the names Aculyn 46® and Aculyn 44® [Aculyn 46® is a polyethylene glycol polycondensate containing 150 or 180 moles of ethylene oxide, stearyl alcohol and methylenebis(4-cyclohexyl isocyanate) (SMDI), at 15% by weight in a matrix of maltodextrin (4%) and water (81%); Aculyn 44® is a polyethylene glycol polycondensate containing 150 or 180 moles of ethylene oxide, decyl alcohol and methylenebis(4-cyclohexyl isocyanate) (SMDI), at 35% by weight in a mixture of propylene glycol (39%) and water (26%)].

[0308] In a preferred embodiment according to the present invention, the associative polymers are chosen from among the non-ionic associative polymers, as described above, and more specifically from among the non-ionic associative cellulose derivatives.

[0309] Preferably, the dye composition according to the present invention comprises one or more non-ionic associative cellulose derivatives.

[0310] The associative polymer(s) may be present in an amount ranging from 0.005% to 5% by weight, preferably in an amount ranging from 0.01% to 2% by weight relative to the total weight of the dye composition.

[0311] Alkaline Agent

[0312] The dye composition according to the present invention may also include one or more hybrid mineral, organic or alkali agents.

[0313] Preferably, the dye composition according to the invention comprises at least one alkaline agent.

[0314] For the purposes of the present invention, the terms "alkaline agent" and "basifying agent" are used interchangeably.

[0315] The mineral alkalizing agent(s) are preferably chosen from ammonium hydroxide, alkali metal carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali metal or alkaline earth metal phosphates such as sodium phosphates or potassium phosphates, sodium or potassium hydroxides, alkali metal or alkaline earth metal silicates or metasilicates such as sodium metasilicate, and mixtures thereof.

[0316] 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.

[0317] The term "alkanolamine" designates an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched C1-C8 alkyl groups bearing one or more hydroxyl radicals.

[0318] Organic amines selected from among alkanolamines such as monoalkanolamines, dialkanolamines or trialkanolamines comprising one to three identical or different C1-C4 hydroxyalkyl radicals are particularly suitable for carrying out the invention.

[0319] In particular, the alkanolamine(s) are selected 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(hydroxymethyl)aminomethane and mixtures thereof.

[0320] Advantageously, amino acids are basic amino acids comprising an additional amine function. Such basic amino acids may be selected from histidine, lysine, arginine, ornithine, and citrulline.

[0321] The organic amine can also be selected from heterocyclic organic amines. In addition to histidine, which has already been mentioned among amino acids, pyridine, piperidine, imidazole, triazole, tetrazole, and benzimidazole are particularly noteworthy. The organic amine can also be selected from amino acid dipeptides. Carnosine, anserine, and balenine are examples of amino acid dipeptides that can be used in the present invention. The organic amine can also be selected from compounds containing a guanidine function. Creatine, the creatinine, 1,1-dimethylguanidine, 1,1-diethylguanidine, glycocyamine, metformin, agmatine, n-amidoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2-([amino(imino)methyl]amino)ethane-l-sulfonic acid.

[0322] Hybrid compounds that can be used include in particular guanidine carbonate or monoethanolamine hydrochloride.

[0323] The useful alkali agent(s) according to the invention are preferably chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonium hydroxide, carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, silicates or metasilicates of alkali metal or alkaline earth metal such as sodium metasilicate and mixtures thereof, more preferably from alkanolamines and ammonium hydroxide, better still from alkanolamines, even better monoethanolamine.

[0324] According to a particular preferred embodiment, the dye composition according to the invention is free of ammonium hydroxide.

[0325] The total content of alkali agent(s), when present, is preferably from 0.1% to 40% by weight, more preferably from 1% to 30% by weight, better still from 2% to 25% by weight, and even better from 4% to 20% by weight, relative to the total weight of the dye composition.

[0326] According to a particular embodiment, the total alkanolamine content, preferably monoethanolamine, is preferably from 0.1% to 40% by weight, more preferably from 1% to 30% by weight, better still from 2% to 25% by weight, even better from 4% to 20% by weight, relative to the total weight of the tincture composition.

[0327] Preferably, the pH of the dye composition is between 8 and 13, more preferably between 9 and 12.

[0328] The pH of the composition can be corrected to the desired value by means of one or more acidic or alkaline agents commonly used in dyeing keratinous fibers, such as those described above, or alternatively by means of buffer systems known to those skilled in the art.

[0329] The dye composition according to the invention is preferably an aqueous composition. The dye composition preferably comprises water in an amount greater than or equal to 5% by weight, preferably greater than or equal to 10% by weight, more preferably greater than or equal to 15% by weight, even more preferably greater than 30% by weight relative to the total weight of the dye composition.

[0330] Additives

[0331] The dye composition according to the invention may optionally include one or more additives, different from the compounds of the invention, and among which one Examples may include mineral thickening agents, anionic, cationic and amphoteric surfactants, sequestrants, solvents other than polyols, anti-dandruff agents, anti-seborrheic agents, agents to prevent hair loss and / or to promote hair regrowth, vitamins and provitamins, including panthenol, sunscreens, mineral or organic pigments, plasticizers, solubilizers, opacifiers or pearlescent agents, antioxidants, hydroxy acids, perfumes and preservatives.

[0332] Of course, a person skilled in the art will take care to choose this or these optional additional compounds so that the advantageous properties intrinsically associated with the composition according to the invention are not, or not substantially, negatively affected by the envisaged addition(s).

[0333] The above additives can generally be present in an amount, for each of them, between 0% and 20% by weight, relative to the total weight of the dye composition.

[0334] Preferably, the dye composition according to the invention does not include chemical oxidizing agents.

[0335] Lamellar Structure

[0336] The dye composition according to the present invention may have a lamellar structure or a lamellar phase. The expression "lamellar structure" or "lamellar phase" refers to a liquid crystalline structure or phase with planar symmetry, comprising several amphiphilic layers arranged in parallel and separated by a liquid medium which is generally water.

[0337] Preferably, the dye composition according to the present invention may have a lamellar phase Lp. Oxidizing Composition

[0338] The oxidizing composition according to the invention comprises one or more oxidizing agents.

[0339] Oxidizing agents are selected, for example, from hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, peroxygenated salts, for example persulfates, perborates, peracids and their precursors, and alkali metal or alkaline earth metal percarbonates. Advantageously, the oxidizing agent is hydrogen peroxide.

[0340] Preferably, the oxidizing composition comprises hydrogen peroxide.

[0341] The content of oxidizing agent(s), preferably hydrogen peroxide, is preferably from 0.1% to 40% by weight, preferably from 0.5% to 20% by weight and more preferably from 1% to 15% by weight relative to the weight of the oxidizing composition.

[0342] The oxidizing composition according to the invention may include water and / or one or more organic solvents.

[0343] Examples of organic solvents that may be cited include linear or branched and preferably saturated monoalcohols or diols, comprising from 2 to 10 carbon atoms, such as ethanol, isopropanol, hexylene glycol (2-methyl-2,4-pentanediol), neopentyl glycol and 3-methyl-1,5-pentanediol, butylene glycol, dipropylene glycol and propylene glycol; aromatic alcohols such as benzyl alcohol or phenylethyl alcohol; polyols containing more than two hydroxyl functions, such as glycerol; polyol ethers, for example ethylene glycol monomethyl, monoethyl or monobutyl ether, propylene glycol or its ethers, for example propylene glycol monomethyl ether; and also diethylene glycol alkyl ethers, in particular Ci-C4 alkyl ethers, for example diethylene glycol monoethyl ether or monobutyl ether, alone or in mixtures.

[0344] Organic solvents, when present, generally represent between 0.1% and 20% by weight relative to the total weight of the oxidizing composition, and preferably between 0.4% and 10% by weight relative to the total weight of the oxidizing composition.

[0345] The oxidizing composition according to the invention is preferably aqueous. In this case, the oxidizing composition preferably comprises from 30% to 99% by weight of water, better still from 40% to 95% by weight of water and even better from 50% to 90% by weight of water relative to the total weight of the oxidizing composition.

[0346] The oxidizing composition of the invention may also contain various adjuvants traditionally used in hair dye compositions, such as non-ionic surfactants, fatty alcohol, antioxidants; penetrants; sequestrants; perfumes; dispersants; film-forming agents; ceramides; preservatives; opacifiers.

[0347] The above adjuvants are generally present in an amount, for each of them, between 0.01% and 20% by weight, relative to the total weight of the oxidizing composition.

[0348] Preferably, the pH of the oxidizing composition, when aqueous, is less than 7.

[0349] The invention also relates to a product containing:

[0350] A) a dye composition comprising:

[0351] a) one or more solid fatty acids,

[0352] b) one or more non-ionic surfactants,

[0353] c) one or more non-associative polymers selected from amphoteric polymers, cationic polymers and mixtures thereof,

[0354] d) at least 10% by weight of one or more fatty substances other than fatty acids, relative to the total weight of the composition,

[0355] e) one or more polyols,

[0356] f) one or more oxidation bases, and

[0357] g) one or more oxidation couplers selected from hydroxyethyl 1-3,4-methylenedioxyaniline of formula (I) below, one of its addition salts, its solvates and / or solvates of its salts: (I), and

[0358] B) an oxidizing composition comprising one or more oxidizing agents, preferably hydrogen peroxide.

[0359] The invention also relates to a product containing:

[0360] A) a dye composition comprising:

[0361] a) one or more solid fatty acids,

[0362] b) one or more non-ionic surfactants,

[0363] c) one or more non-associative polymers selected from amphoteric polymers, cationic polymers and mixtures thereof,

[0364] d) at least 10% by weight of cetearyl alcohol relative to the total weight of the tincture composition,

[0365] e) one or more polyols, preferably propylene glycol,

[0366] f) one or more oxidation bases, and

[0367] g) one or more oxidation couplers selected from hydroxyethyl 1-3,4-methylenedioxyaniline of formula (I) below, one of its addition salts, its solvates and / or solvates of its salts: (I), and

[0368] B) an oxidizing composition comprising one or more oxidizing agents, preferably hydrogen peroxide. Product

[0369] The product according to the invention is preferably a multi-compartment device comprising at least a first compartment containing the dye composition as described above and at least a second compartment containing the oxidizing composition as described above.

[0370] The compositions of the device according to the invention are packaged in separate compartments, optionally accompanied by suitable application means which may be identical or different, such as fine brushes, coarse brushes or sponges.

[0371] The device mentioned above can also be equipped with a means for distributing the desired mixture onto the hair, for example the devices described in patent FR 2586913.

[0372] The apparatus may be in the form of one or several sachets. The tincture composition and the oxidizing composition may be packaged in a separate sachet or in a single double-compartment sachet. Process

[0373] The present invention also relates to a process for dyeing keratinous fibers, preferably hair, which includes mixing the dye composition as described above with the oxidizing composition as described above and applying a ready-to-use composition resulting from the mixture.

[0374] This mixing step is preferably carried out at the time of use, just before applying the resulting composition to the hair.

[0375] Preferably, the weight ratio of the quantities of dye composition and oxidizing composition ranges from 0.1 to 10 and preferably from 0.3 to 3.

[0376] The ready-to-use composition can be applied to wet or dry keratinous fibers.

[0377] After a setting time of one minute to one hour and preferably of 5 minutes to 50 minutes, the human keratin fibers are rinsed with water, and optionally washed with shampoo, then rinsed with water, before being dried or left to dry.

[0378] Preferably, the pH of the ready-to-use composition is between 8 and 11, preferably between 9.0 and 10.5.

[0379] The temperature during the process is traditionally between ambient temperature (15 to 25 °C) and 80 °C and preferably between ambient temperature and 60 °C.

[0380] The following examples serve to illustrate the invention without, however, being limiting in nature. EXAMPLES

[0381] The following compositions are prepared (quantities are expressed as % in g of active ingredient): Example 1

[0382] [Tables] Composition of dye A Al: HYDROXYETHYL-3,4-METHYLENEDIOXIANIL NE HCl 0.32 0.32 N,N-BIS(2-HYDROXYETHYL)-P-PHENYLENEDIAMINE SULFATE 0.23 0.23 HYDROXYBENZOMORPHOLINE 0.68 0.68 2-AMINO-3-HYDROXYPYRIDINE 0.07 0.07 m-AMINOPHENOL 0.26 0.26 2,4-DIAMINOPHENOXYETHANOL HCl 0.02 0.02 TOLUENE-2,5-DIAMINE 0.89 0.89 Propylene glycol 5.00 - OLEA EUROPAEA (OLIVE) OIL 0.10 0.10 Mineral oil 6.00 6.00 Polyquaterium-22 0.33 0.33 Cetearyl alcohol 17.00 17.00 Cetylhydroxyethylcellulose 0.05 0.05 Laureth-12 1.50 1.50 Laureth-4 3.00 3.00 Oleth-20 1.50 1.50 Polysorbate 21 2.40 2.40 Myristic acid 0.02 0.02 Palmitic acid 0.26 0.26 Stearic acid 0.32 0.32 EDTA 0.20 0.20 Monoethanolamine 6.33 6.33 Sodium metabisulfite 0.75 0.75 Ascorbic acid 0.25 0.25 Parfum qs qs Water Up to 100 Up to 100

[0383] Oxidizing composition

[0384] Oxidizing composition B was prepared from the ingredients whose contents are indicated in the table below:

[0385] [Tables2] Ingredients B SODIUM SALICYLATE 0.035 TETRASODIUM PYROPHOSPHATE 0.04 HYDROGEN PEROXIDE 6.00 CETEARYL ALCOHOL 2.28 CETEARETH-25 0.57 TETRASODIUM ETIDRONATE 0.06 TRIDECETH-2 CARBOXAMIDE MEA 0.85 GLYCEROL 0.50 PHOSPHORIC ACID qs pH 2.2 Water qs 100

[0386] Dyeing Protocol

[0387] Dye compositions A and A1 are each mixed with oxidizing composition B in a weight ratio of 1 / 1

[0388] Each of the mixtures is applied to strands of natural hair, in a proportion of 5 g of mixture to 1 g of hair.

[0389] The compositions are easily mixed and the resulting mixtures are easily applied to the hair. After a processing time of 30 minutes on a heated plate at 27°C, the hair is rinsed, washed with a standard shampoo, and dried.

[0390] Results

[0391] Hair colouring is evaluated with a Minolta CM3600d spectrocolorimeter, illuminant D65, angle 10°, SCI values ​​for colourimetric measurements L*, a*, b*.

[0392] In this L*, a*, b* system, L* represents the intensity of the color, a* indicates the green / red color axis, and b* indicates the blue / yellow color axis. The lower the value of L, the darker or more intense the color. The higher the value of a*, the redder the hue; the higher the value of b*, the yellower the hue.

[0393] The variation in colour between coloured strands of natural white hair that are not treated (control) and after treatment or colouring is defined by AE*, corresponding to the colour absorption on the keratinous fibres, according to the following equation:

[0394]

[0395]

[0396]

[0397]

[0398]

[0399] In this equation, L*, a* and b* represent the values ​​measured after dyeing natural hair including 90% white hair and Lo*, a0* and b0* represent the values ​​measured for untreated natural hair including 90% white hair. The higher the Ade E value, the greater the color difference between the control strands and the dyed strands, and the greater the color absorption. [Tables 3] L* a* b* AE Natural untreated hair 65.85 1.32 17.55 - A + B (invention) 20.35 1.74 1.9 48.12 Al + B (comparative) 19.75 1.76 1.94 46.02 Composition A according to the invention leads to a higher AE value, and therefore to greater color absorption, compared to the comparative composition Al. We achieve good color visibility on the treated hair, as well as good shine and softness.

Claims

Claims

1. Product for dyeing human keratinous fibers, such as hair, comprising: A) a dyeing composition comprising: a) one or more fatty acids; b) one or more non-ionic surfactants, c) one or more non-associative polymers chosen from amphoteric polymers, cationic polymers and their mixture, d) at least 10% by weight of one or more fatty substances other than fatty acids, relative to the total weight of the composition, e) one or more polyols, f) one or more oxidation bases, g) one or more oxidation couplers chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I) below, one of its addition salts, its solvates and / or solvates of its salts: (I), and iy \ B) an oxidizing composition comprising one or more oxidizing agents.

2. Product according to the preceding claim, wherein said one or more fatty acids include at least one carboxylic acid and a linear or branched, saturated or unsaturated, in particular unsaturated, alkyl chain comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

3. Product according to any one of the preceding claims, wherein said one or more fatty acids are solid fatty acids, in particular chosen from lauric acid, myristic acid, stearic acid, palmitic acid, and mixtures thereof, preferentially from myristic acid, stearic acid, palmitic acid and mixtures thereof.

4. Product according to any one of the preceding claims, in which said one or more non-ionic surfactants are chosen from oxyalkylenated non-ionic surfactants, preferably oxyethylenated, in particular chosen from saturated or unsaturated, linear or branched oxyalkylenated surfactants, preferably chosen among the C8-C30 oxyethylenated alcohols and the C8-C30 oxyalkylenated fatty acid esters of sorbitan, preferably among the C8-C30 oxyethylenated alcohols comprising from 1 to 100 moles of ethylene oxide, preferably from 1 to 50 moles of ethylene oxide, more preferably from 2 to 30 moles of ethylene oxide.

5. Product according to any one of the preceding claims, wherein said one or more non-associative polymers are chosen from: - cationic cyclopolymers of alkyldiallylamine or dialkyldiallylammonium, in particular homopolymers or copolymers of dimethyldiallylammonium salt, hexadimethrine chloride and mixtures thereof, - amphoteric polymers chosen from polymers consisting of units derived from monomers (i) of (meth)acrylamide type, (ii) of (meth)acrylamidoalkyltrialkylammonium type and (iii) of (meth)acrylic acid type, copolymers based on (meth)acrylic acid and a dialkyldiallylammonium salt, such as copolymers of (meth)acrylic acid and dimethyldiallylammonium chloride, - and mixtures thereof, preferably from amphoteric polymers chosen from polymers consisting of units derived from monomers (i) of (meth)acrylamide type,(ii) of (meth)acrylamidoalky Itrialkylammonium type and (iii) of (meth)acrylic acid type, copolymers based on (meth)acrylic acid and a dialkyldiallylammonium salt, such as copolymers of (meth)acrylic acid and dimethyldiallylammonium chloride, and mixtures thereof.,

6. Product according to any one of the preceding claims, in which the dye composition comprises at least one liquid fatty substance other than fatty acids, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols and liquid fatty esters, silicone oils and mixtures thereof, more preferably from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils or mixtures thereof, and / or at least one solid fatty substance other than fatty acids, preferably chosen from solid fatty alcohols, esters of solid fatty acid and / or fatty alcohol, waxes and ceramides, and mixtures thereof, preferably from solid fatty alcohols and mixtures thereof, in particular chosen from cetyl alcohol, stearyl alcohol and mixtures thereof, such as cetylstearyl alcohol or cetearyl alcohol.

7. Product according to any one of the preceding claims, in which said one or more polyols are chosen from diols, preferably from C3-C6 diols, more preferably from propylene glycol.

8. Product according to any one of the preceding claims, in which the total amount of polyols in the dye composition ranges from 0.5% to 15% by weight, in particular from 1% to 10% by weight and preferably from 2% to 8% by weight, relative to the total weight of the dye composition.

9. Product according to any one of the preceding claims, in which the dyeing composition comprises one or more alkaline agents, preferably chosen from alkanolamines, ammonium hydroxide, carbonates or bicarbonates, silicates or metasilicates of alkali metal or alkaline earth metal, more preferably from alkanolamines, better still from monoethanolamine.

10. A product according to any preceding claim, which is free from oxidation couplers selected from resorcinol, 2-methylresorcinol, 4-chlororesorcinol, their addition salts, their solvates and solvates of their salts.