Dyeing compositions in aqueous-alcoholic media

Abstract

The present invention is directed to an aqueous-alcoholic dyeing composition A for keratin fibers, preferably human keratin fibers, more preferably human hair, having a pH of 6 to 12, comprising a) one or more hair dyes, b) one or more C2-C4 mono-, di- or trihydric alcohols and / or mixtures thereof, c) one or more nonionic surfactants having an HLB value of 11 or less, and d) one or more quaternary ammonium surfactants having a specific structure, the total concentration of the compounds of group b) being 5% by weight or more relative to the total weight of composition A, and composition A comprising, as compounds of group e), one or more quaternary ammonium surfactants having a specific structure, the total concentration of the one or more compounds of group e) being 0.5 to 10% by weight relative to the total weight of composition A.

Description

[Technical field]

[0001] The present invention is directed to a dyeing composition for keratin fibers in an aqueous-alcoholic medium comprising a dye and a specific surfactant. [Background technology]

[0002] Conventional low viscosity liquid hair dye compositions use ethoxylated surfactants that are dissolved in an aqueous-alcoholic medium with the aid of an anionic surfactant. After mixing with the second part, spontaneous gel formation occurs and the viscosity increases to a level that allows safe application to the consumer's hair without dripping. However, the resulting ready-to-use composition can result in poor hair feel, leading to consumer dissatisfaction.

[0003] Hair feel is usually improved with cationic surfactants. However, the combination of nonionic surfactants with cationic surfactants in aqueous-alcoholic compositions generally leads to stability problems of the ready-to-use composition, leading to the composition dripping onto the consumer's head or even face during the hair dyeing process. Summary of the Invention [Problem to be solved by the invention]

[0004] The prior art has yet to address the problem of dripping of ready-to-use mixtures resulting from conventional liquid compositions having a water-like viscosity while enhancing the cosmetic appearance of colored hair. [Means for solving the problem]

[0005] Thus, a first object of the present invention is to provide an aqueous-alcoholic dyeing composition A for keratinous fibres, preferably human keratinous fibres and more preferably human hair, having a pH between 6 and 12, a) one or more hair dyes; b) one or more C2-C4 monohydric, dihydric, or trihydric alcohols, and / or mixtures thereof; c) one or more nonionic surfactants having an HLB value of 11 or less; d) The following structure:

[0006] [ka] (Wherein, R1 and R2 are C1 to C 22 alkyl or alkylene, provided that at least R is C 17 ~C 22 R3 and R4 are independently selected from C1-C4 alkyl or alkylene; X - is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to Including, the total concentration of compounds of group b) is equal to or greater than 5% by weight, relative to the total weight of composition A; Composition A includes, as a compound of group e), the following structure:

[0007] [ka] (Wherein, R5 and R6 are C1 to C 16 Independently selected from alkyl and alkylene, provided that at least R5 is C 16 alkyl or alkylene, R7 and R8 are independently selected from C1-C4 alkyl or alkylene, Y - is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to the total concentration of one or more compounds of group e) is in the range of 0.5 to 10% by weight relative to the total weight of composition A; It is a composition.

[0008] A second object of the invention is a kit of parts for dyeing keratin fibres, preferably for dyeing human keratin fibres and more preferably for dyeing human hair, comprising: said composition A, - an aqueous acidic composition B having a pH between 1 and 6 and optionally comprising one or more oxidizing agents, preferably hydrogen peroxide; - with any bleaching composition C It is a parts kit including:

[0009] A third object of the present invention is a composition for preparation at the time of use, which comprises the above composition A and the above composition B, and has a pH of 6 to 12.

[0010] A fourth object of the present invention is a method for dyeing keratin fibres, preferably human keratin fibres, more preferably human hair, comprising the steps of: i) mixing said composition A with said aqueous acidic composition B to obtain a ready-to-use composition having a pH of 6 to 12; ii) applying the composition to be prepared when used to keratin fibers and leaving it for 1 to 60 minutes; iii) rinsing the ready-to-use composition; iv) optionally shampooing and drying the keratin fibers; The method includes: Effect of the Invention

[0011] The inventors of the present invention have surprisingly found that the composition according to claim 1 provides excellent dry and wet hair feel, excellent storage stability and has low or no tendency to drip from the consumer's hair during the hair colouring treatment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Dyeing composition The present invention relates to an aqueous-alcoholic dyeing composition A for keratinous fibers, preferably human keratinous fibers, more preferably human hair, having a pH between 6 and 12, a) one or more hair dyes; b) one or more C2-C4 monohydric, dihydric, or trihydric alcohols, and / or mixtures thereof; c) one or more nonionic surfactants having an HLB value of 11 or less; d) The following structure:

[0013] [ka] (Wherein, R1 and R2 are C1 to C 22 alkyl or alkylene, provided that at least R is C 17 ~C 22 R3 and R4 are independently selected from C1-C4 alkyl or alkylene; X - is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to Including, the total concentration of compounds of group b) is equal to or greater than 5% by weight, relative to the total weight of composition A; Composition A includes, as a compound of group e), the following structure:

[0014] [ka] (Wherein, R5 and R6 are C1 to C 16 Independently selected from alkyl and alkylene, provided that at least R5 is C 16 alkyl or alkylene, R7 and R8 are independently selected from C1-C4 alkyl or alkylene, Y - is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to the total concentration of one or more compounds of group e) is in the range of 0.5 to 10% by weight relative to the total weight of composition A; The present invention relates to compositions.

[0015] From the viewpoints of dyeing strength and cosmetic safety, the pH of composition A is preferably 7 or higher, more preferably 7.5 or higher, and even more preferably 8 or higher.

[0016] From the viewpoint of cosmetic safety, the pH of Composition A is preferably 11 or less, and more preferably 10.5 or less.

[0017] In order to achieve the above effects, the pH of composition A is preferably 7 to 11, more preferably 7.5 to 10.5, and even more preferably 8 to 10.5.

[0018] For purposes of the present invention, pH is measured at atmospheric pressure and 25° C. using a glass electrode.

[0019] From the standpoint of stability, it is preferred that Composition A is transparent to the naked human eye at an optical path length of 1 cm.

[0020] Alternatively, the transparency of the composition can be measured by UV-Vis spectrometry at 600 nm with a 1 cm path length. If the light transmittance is 80% or greater, the composition is transparent.

[0021] From the standpoint of cosmetic application properties, the viscosity of Composition A, prior to mixing with Composition B, is 1,000 mPa s or less, preferably 750 mPa s or less, and even more preferably 500 mPa s or less, measured at atmospheric pressure, 5 rpm and 25° C. using a Brookfield RV DVIII viscometer and spindle number 3.

[0022] Compounds of group a) Composition A comprises, as compounds of group a), one or more hair dyes.

[0023] From the standpoint of commercial availability and dyeing strength, it is preferred that the one or more compounds in group a) are oxidative hair dyes and / or direct hair dyes and / or salts thereof and / or mixtures thereof, preferably the one or more compounds in group a) are oxidative hair dyes and / or salts thereof and / or mixtures thereof.

[0024] Suitable oxidation dyes are p-phenylenediamine, p-aminophenol, 2,5-diaminotoluene, 2-n-propyl or 2-ethyl-p-phenylenediamine, 2,6-dimethyl-p-phenylene-diamine, 2-(2,5-diaminophenyl)ethanol, 1-amino-4-bis-(2'-hydroxyethyl)amino-benzene, 2-(2-hydroxyethylamino)-5-aminotoluene, 4,4'-diaminodiphenylamine, 4-aminodiphenylamine, 2-amino-5-N,N-diethylaminotoluene, 4-amino-N-ethyl -N-isopropylaniline, 2-chloro-p-phenylenediamine, 1-β-hydroxyethyl-2,5-diamino-4-chlorobenzene, 1-β-hydroxyethyl-2,5-diamino-4-methylbenzene, 2-methoxy-p-phenylenediamine, N,N-diethyl-p-phenylenediamine, 1-amino-4-β-methoxyethylaminobenzene, 1-dimethyl-amino-4-aminobenzene, 1-hydroxy-2,5-diamino-4-methylbenzene, 1-hydroxymethyl-2,5-diaminobenzene, 1,3-dimethyl-2,5-diamino nobenzene, 1,4-diaminoisopropylbenzene and / or 1-amino-4-β-hydroxypropylaminobenzene, 1-hydroxyethyl-4,5-diaminopyrazole, 3,4-diamino-5-hydroxypyrazole, 3,5-diaminopyrazole, 3,5-diaminopyrazole-1-carboxamide, 3-amino-5-hydroxypyrazole, 1-phenyl-2-methylpyrazole, 1-phenyl-3-methylpyrazole-5-one, 3,5-dimethylpyrazole, 3,5-dimethylpyrazole-1-methanol, 3,5-diamino-1 ,2,4-triazoles, 4-aminophenols and their derivatives, such as 4-amino-3-methylphenol, 2-chloro-4-aminophenol, 2,6-dichloro-4-aminophenol, 2,4-diamino-phenol, 2,6-dibromo-dibromo-4-aminophenol, tetraaminopyrimidines, triaminohydroxypyrimidines, diaminomono- and -dihydroxypyrimidines, aminotriazines, 5-aminosalicylic acid and / or 1,2,4-triaminobenzene, 2,5-diaminopyridine, 2,3-diaminopyridine, 2,6-Diaminopyridine, 3-amino-2-methylamino-6-methoxypyridine, 2-dimethyl-5-aminopyridine, 2-dimethylaminoethyl-3-hydroxypyridine, 2-amino-4,6-dimethylpyridine, 2-amino-3-hydroxypyridine, 3-amino-2(β-hydroxyethylamino)-6-methoxypyridine, 2,6-dimethylamino-5-aminopyridine, 2-di(hydroxyethyl)amino-5-aminopyridine, 2-hydroxyethylamino-5-aminopyridine, 4-hydroxy-2,5,6-triaminopyridine din, 5-amino-2-methylphenol, 2-methyl-5-hydroxyethylaminophenol, 2,4,-diaminophenoxyethanol, 2-amino-4-hydroxyethylaminoanisole, 2-methyl-5-amino-6-chlorophenol, 1,3-bis(2,4-diaminophenoxy)propane, 2-bis(2-hydroxyethyl)aminotoluene, 2-amino-5-methylphenol, resorcinol, 2-methyl-resorcinol, 4-chlororesorcinol, 2-amino-4-chlorophenol, 5-amino-4-methoxy- 2-Methylphenol, 2-aminophenol, 3-amino-phenol, 1-methyl-2-hydroxy-4-aminobenzene, 3-N,N-dimethylaminophenol, 2,6-dihydroxy-3,5-dimethoxypyridine, 5-amino-3-methylphenol, 6-amino-3-methylphenol, 1,3-diamino-benzene, 1-amino-3-(2'-hydroxyethylamino)benzene, 1-amino-3-[bis(2'-hydroxyethyl)amino]benzene, α-naphthol, 4,6-dichlororesorcinol, 1,3-diamino -toluene, 4-hydroxy-1,2-methylenedioxybenzene, 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 1-hydroxy-2-methylnaphthalene, 4-hydroxy-1,2-methyldioxybenzene, 2,4-diamino-3-chlorophenol, 5-amino-2-methoxyphenol and / or 1-methoxy-2-amino-4-(2'-hydroxyethylamino)benzene, or water-soluble salts thereof and mixtures thereof.

[0025] Suitable direct hair dyes as compounds of group a) are: Acid Black 1, Acid Blue 1, Acid Blue 3, Food Blue No. 5, Acid Blue 7, Acid Blue 9, Acid Blue 74, Acid Orange 3, Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Red 1, Acid Red 14, Acid Red 18, Acid Red 27, Acid Red 50, Acid Red 52, Acid Red 73, Acid Red 87, Acid Red 88 , Acid Red 92, Acid Red 155, Acid Red 180, Acid Violet 9, Acid Violet Red 43, Acid Violet 49, Acid Yellow 1, Acid Yellow 23, Acid Yellow 3, Food Yellow No. 8, D&C Brown No. 1, D&C Green No. 5, D&C Green No. 8, D&C Orange No. 4, D&C Orange No. 10, D&C Orange No. 11, D&C Red No. 21, D&C Red No. 27, D&C Red No. 33, D&C Purple No. 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow These are Color No. 10, FD&C Red No. 2, FD&C Red No. 40, FD&C Red No. 4, FD&C Yellow No. 6, FD&C Blue No. 1, Food Black No. 1, Food Black No. 2, Dispersed Black 9, Dispersed Violet 1, Acid Red 52, DC Purple No. 2, DC Red No. 33, DC Orange No. 4, DC Red No. 27, DC Yellow No. 10, HC Blue 18, HC Red 18, HC Yellow 16, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Natural Brown 7, Basic Green 1, Basic Red 2, Basic Red 12, Basic Red 22, Basic Red 76, Basic Violet 1, Basic Violet 2, Basic Violet 3, Basic Violet 10, Basic Violet 14, Basic Yellow 57, Basic Red 51, Basic Yellow 87, HC Blue 17, and Basic Orange 31.Most preferred are Basic Red 51, Basic Yellow 87, Basic Orange 31, HC Blue 17 and Basic Blue 124, HC Blue 2, HC Blue 4, HC Blue 5, HC Blue 6, HC Blue 7, HC Blue 8, HC Blue 9, HC Blue 10, HC Blue 11, HC Blue 12, HC Blue 13, HC Brown 1, HC Brown 2, HC Green 1, HC Orange 1, HC Orange 2, HC Orange 3, HC Orange 5, HC Red BN, HC Red 1, HC Red 3, HC Red 7, HC Red 8, HC Red 9, HC Red 10, HC Red 11, HC Red 13, HC Red 54, HC Red 14, HC Purple BS, HC Purple 1, HC Purple 2, HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 7, HC Yellow 8, HC Yellow 9, HC Yellow 10, HC Yellow 11, HC Yellow 12, HC Yellow 13, HC Yellow 14, HC Yellow 15, 2-amino-6-chloro-4-nitrophenol, and / or mixtures thereof and / or salts thereof.

[0026] From the viewpoint of staining strength, the total concentration of the compounds of group a) in composition A is 0.001% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more, based on the total mass of composition A.

[0027] From the standpoint of economic value, the total concentration of the compounds of group a) in composition A is 5% by weight or less, more preferably 4% by weight or less, even more preferably 3% by weight or less, and even more preferably 2% by weight or less, relative to the total weight of composition A.

[0028] In order to achieve the above-mentioned effects, the total concentration of the compounds of group a) is in the range of 0.001 to 5 mass%, preferably 0.01 to 4 mass%, more preferably 0.05 to 3 mass%, and even more preferably 0.1 to 2 mass%, relative to the total mass of composition A.

[0029] b) Compounds of group Composition A comprises, as compounds of group b), one or more C2-C4 monohydric, dihydric or trihydric alcohols and / or mixtures thereof, the total concentration of compounds of group b) being 5% by mass or more.

[0030] Suitable C2-C4 monohydric, dihydric or trihydric alcohols are ethanol, isopropanol, n-propanol, n-butanol, tert-butanol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, glycerol, and / or mixtures thereof.

[0031] Preferred C2-C4 monohydric, dihydric, or trihydric alcohols from the viewpoint of cosmetic compatibility are ethanol, isopropanol, 1,2-propylene glycol, and glycerol.

[0032] From the viewpoint of composition stability, the total concentration of compounds of group b), preferably ethanol, isopropanol, 1,2-propylene glycol, and glycerol, and / or mixtures thereof, is 10% by weight or more, more preferably 15% by weight or more, and even more preferably 20% by weight or more, based on the total weight of composition A.

[0033] From the viewpoint of composition stability, the total concentration of compounds of group b), preferably ethanol, isopropanol, 1,2-propylene glycol, and glycerol, and / or mixtures thereof, is not more than 60% by weight, more preferably not more than 50% by weight, even more preferably not more than 45% by weight, relative to the total weight of composition A.

[0034] In order to achieve the above effects, the total concentration of the compounds of group b) is 10-60% by weight, preferably 15-50% by weight, and even more preferably 20-45% by weight, relative to the total weight of composition A.

[0035] c) Compounds of group Composition A comprises, as compounds of group c), one or more nonionic surfactants having an HLB value of 11 or less.

[0036] For purposes of the present invention, HLB values ​​are calculated by the well-established method of Griffin.

[0037] From the standpoint of composition stability, it is preferred that one or more compounds in group c) have an HLB of 8 or less, more preferably 7 or less, and even more preferably 6 or less.

[0038] Suitable compounds of group c) are ethoxylated saturated or unsaturated fatty alcohols and / or mixtures thereof, preferably C8-C 18 Preferably in the range of C 10 ~C 14 More preferably, 12 ~C 14 The ethoxylated saturated or unsaturated fatty alcohols have carbon chain lengths in the range of

[0039] Suitable group c) compounds are laureth-2, laureth-3, laureth-4, deceth-2, deceth-3, deceth-4, and / or mixtures thereof.

[0040] The most preferred group c) compound is laureth-2.

[0041] From the viewpoint of composition stability, it is preferred that composition A comprises one or more compounds of group c) in a total concentration of 1% by weight or more, more preferably 5% by weight or more, even more preferably 10% by weight or more, and even more preferably 15% by weight or more, based on the total weight of composition A.

[0042] From the viewpoint of composition stability, it is preferred that composition A comprises one or more compounds of group c) in a total concentration of 40% by weight or less, more preferably 35% by weight or less, even more preferably 30% by weight or less, and even more preferably 25% by weight or less, relative to the total weight of composition A.

[0043] In order to achieve the above-mentioned effects, it is preferred that composition A comprises one or more compounds of group c) in a total concentration of 1 to 40% by weight, preferably 5 to 35% by weight, even more preferably 10 to 30% by weight, and even more preferably 15 to 25% by weight, relative to the total weight of composition A.

[0044] d) Compounds of group Composition A includes, as a compound of group d), the following structure:

[0045] [ka] (Wherein, R1 and R2 are C1 to C 22 alkyl or alkylene, provided that at least R is C 17 ~C 22 R3 and R4 are independently selected from C1-C4 alkyl or alkylene; X - is a halogen, sulfate or methosulfate anion) The composition comprises one or more quaternary ammonium surfactants according to the present invention.

[0046] Suitable compounds of group d) are steartrimonium chloride, steartrimonium bromide, steartrimonium methosulfate, behentrimonium chloride, behentrimonium bromide, behentrimonium methosulfate, distearoyldimonium chloride, distearoyldimonium bromide, and / or mixtures thereof, more preferably steartrimonium chloride and behentrimonium chloride, and / or salts thereof, more preferably steartrimonium chloride.

[0047] From the viewpoint of viscosity when mixed with composition B, it is preferred that composition A comprises one or more compounds of group d) in a total concentration of 0.5% by mass or more, preferably 1% by mass or more, more preferably 1.5% by mass or more, relative to the total mass of composition A.

[0048] From the viewpoint of viscosity when mixed with composition B, it is preferred that composition A comprises one or more compounds of group d) in a total concentration of 10% by weight or less, preferably 8% by weight or less, more preferably 6% by weight or less, relative to the total weight of composition A.

[0049] In order to achieve the above effects, the total concentration of one or more compounds in group d) is 0.5 to 10% by mass, preferably 1 to 8% by mass, and more preferably 1.5 to 6% by mass, based on the total mass of composition A.

[0050] Compounds of group e) Composition A includes, as a compound of group e), the following structure:

[0051] [ka] (Wherein, R5 and R6 are C1 to C 16 Independently selected from alkyl and alkylene, provided that at least R5 is C 16 alkyl or alkylene, R7 and R8 are independently selected from C1-C4 alkyl or alkylene, Y - is a halogen, sulfate or methosulfate anion) The composition comprises one or more quaternary ammonium surfactants according to the present invention.

[0052] Suitable compounds of group e) are cetrimonium chloride, cetrimonium bromide, dodecyltrimonium chloride and / or mixtures thereof, preferably cetrimonium chloride and / or cetrimonium bromide and / or mixtures thereof.

[0053] The total concentration of the one or more compounds of group e) is in the range of 0.5% by weight to 10% by weight relative to the total weight of composition A.

[0054] From the viewpoint of viscosity when mixed with composition B, it is preferred that composition A comprises one or more compounds of group e) in a total concentration of 1% by weight or more, and even more preferably 1.5% by weight or more, relative to the total weight of composition A.

[0055] From the viewpoint of viscosity when mixed with composition B, it is preferred that composition A comprises one or more compounds of group e) in a total concentration of 8% by weight or less, more preferably 6% by weight or less, relative to the total weight of composition A.

[0056] In order to achieve the above-mentioned effects, it is preferred that composition A comprises one or more compounds of group e) in a total concentration in the range of 1 to 8% by weight, preferably in the range of 1.5 to 6% by weight, relative to the total weight of composition A.

[0057] From the viewpoint of preventing dripping when mixed with composition B, the mass ratio of the compounds in group d) to the compounds in group e) is preferably 10:1 to 1:10, more preferably 7:1 to 1:7, even more preferably 5:1 to 1:5, and even more preferably 3:1 to 1:3.

[0058] Parts kit (kit of parts) The present invention also relates to a kit-of-parts for dyeing keratinous fibres, preferably for dyeing human keratinous fibres, more preferably for dyeing human hair, comprising: said composition A, - an aqueous acidic composition B having a pH between 1 and 6 and optionally comprising one or more oxidizing agents, preferably hydrogen peroxide; - with any bleaching composition C This applies to parts kits including:

[0059] From the standpoint of stability, it is preferred that composition A and composition B are mixed immediately prior to application to the keratinous fibers.

[0060] From the viewpoint of storage stability and safety of composition B, the pH of composition B is preferably 1.25 or higher, more preferably 1.5 or higher, and even more preferably 2 or higher.

[0061] From the viewpoint of storage stability of the composition, the pH of composition B is preferably 5 or less, more preferably 4 or less, and even more preferably 3 or less.

[0062] In order to achieve the above effects, the pH of composition B is preferably 1.25-5, more preferably 1.5-4, and even more preferably 2-3.

[0063] From the viewpoint of product performance, when hydrogen peroxide is contained in composition B, the concentration thereof is preferably 1% by mass or more, more preferably 3% by mass or more, even more preferably 6% by mass or more, and still more preferably 9% by mass or more, based on the total mass of composition B.

[0064] From the viewpoints of product performance and user safety, when hydrogen peroxide is contained in composition B, the concentration thereof is preferably 20 mass % or less, more preferably 15 mass % or less, and even more preferably 12 mass % or less, relative to the total mass of composition B.

[0065] In order to achieve the above-mentioned effects, when hydrogen peroxide is contained in composition B, the concentration thereof is preferably 1 to 20 mass %, more preferably 3 to 15 mass %, even more preferably 6 to 12 mass %, and still more preferably 9 to 12 mass %, relative to the total mass of composition B.

[0066] The appropriate mixing ratio by mass of composition A and composition B is 5:1 to 1:5, preferably 3:1 to 1:3, and more preferably 2:1 to 1:2.

[0067] The optional bleaching composition C may be a bleaching powder composition or an aqueous lightening composition.

[0068] The bleaching powder composition may contain one or more persalts and / or peroxy salts. Suitable persalts and / or peroxy salts are sodium persulfate, potassium persulfate, ammonium persulfate, alkaline earth metal peroxides such as magnesium peroxide, melamine peroxide or urea peroxide or phthalimidoperoxyhexanoic acid. In terms of the bleaching powder, preferred persalts are sodium persulfate, potassium persulfate, and ammonium persulfate.

[0069] From the viewpoint of the safety of the bleaching powder and the cosmetic, the total concentration of the persalt and / or peroxy salt in the bleaching powder composition is preferably 10 to 80 mass %, more preferably 15 to 70 mass %, more preferably 20 to 60 mass %, and even more preferably 25 to 60 mass %, relative to the total mass of the bleaching composition C.

[0070] Independently of the product form of the bleaching composition C, it is preferred that the bleaching composition C comprises one or more alkalizing agents, suitably inorganic and / or organic alkalizing agents, and / or mixtures thereof.

[0071] Suitably, the inorganic alkalizing agent is a metasilicate, carbonate and / or bicarbonate, and / or the alkali or alkaline earth metal salts thereof, and / or mixtures thereof.

[0072] Suitably, the organic alkalizing agent has the general structure

[0073] [ka] (In the formula, R9, R 10 , and R 11 are the same or different, and H, C1-C4, C3-C4 unsaturated alkyl, C3-C4 branched alkyl, C1-C4 hydroxyl alkyl, C3-C4 unsaturated hydroxyl alkyl, C3-C4 branched hydroxyl alkyl (provided that R9, R 10 , or R 11 at least one of which is different from H), and / or a mixture thereof The alkyl or alkanolamine is

[0074] Suitable organic alkalizing agents are monoethanolamine, diethanolamine, triethanolamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, and 2-aminomethylpropanol.

[0075] The most preferred organic alkalizing agents for the bleaching composition C are selected from monoethanolamine, 2-aminomethylpropanol, and sodium metasilicate, and / or mixtures thereof.

[0076] From the standpoint of alkalinity and stability, composition C may contain one or more alkalizing agents in a total concentration of 0.25 to 30% by weight, preferably 0.5 to 25% by weight, more preferably 1 to 20% by weight, relative to the total weight of bleaching composition C.

[0077] Ready-to-use composition The present invention also relates to a composition for preparation at the time of use, which comprises the above composition A and the above composition B and has a pH of 6 to 12.

[0078] From the viewpoint of staining intensity, the pH of the composition to be prepared when used is preferably 6.5 to 11.5, and more preferably 7 to 11.

[0079] The ready-to-use composition is prepared immediately before application to keratin fibers. By mixing composition A and composition B, the viscosity of the ready-to-use composition increases to 1,000 to 30,000 mPa·s, preferably 1,500 to 20,000 mPa·s, more preferably 2,000 to 10,000 mPa·s, relative to the viscosity of composition A, measured at atmospheric pressure, 5 rpm and 25°C using a Brookfield RV DVIII viscometer and spindle number 3.

[0080] Dyeing method The present invention also relates to a method for dyeing keratinous fibers, preferably human keratinous fibers, more preferably human hair, comprising the steps of: i) mixing said composition A with said aqueous acidic composition B to obtain a ready-to-use composition having a pH of 6 to 12; ii) applying the composition to be prepared when used to keratin fibers and leaving it for 1 to 60 minutes; iii) rinsing the ready-to-use composition; iv) optionally shampooing and drying the keratin fibers; The present invention relates to a method comprising:

[0081] Preferably, the pH of the composition prepared at the time of use in step i) is 6.5-11.5, more preferably 7-11.

[0082] Preferably, the ready-to-use composition is left to stand on the keratin fibers in step ii) for 2 to 45 minutes, more preferably for 5 to 35 minutes.

[0083] The following examples are intended to illustrate, but not to limit, the present invention. EXAMPLES

[0084] [Table 1]

[0085] Composition B mass% Hydrogen peroxide 6.0 EDTA 0.5 Add phosphoric acid until pH 2.5 Add water until it reaches 100.0

[0086] Composition A in Table 1 and composition B described above were mixed in a mass ratio of 1:1 to obtain a composition prepared at the time of use having a pH of 7.0. The composition prepared at the time of use had a viscosity in the range of 1,500 to 4,000 mPa·s, measured at atmospheric pressure, 5 rpm and 25°C using a Brookfield RV DVIII viscometer and spindle number 3.

[0087] Discussion of results The examples in Table 1 illustrated that the compositions of the present invention had higher total scores, especially the dry hair feel and dripping scores of the ready-to-use compositions were much higher than those of the comparative examples.

[0088] method Preparation of the Composition The compounds of group c) were dissolved in the compounds of group b) and then the other ingredients were added.Finally, the alcoholic composition was diluted with water.

[0089] Hair dyeing To prepare the ready-to-use composition, each of the compositions in Table 1 was mixed with the above composition B, having a pH of 2.5, in a 1:1 weight ratio. 2 g of the resulting ready-to-use composition was applied to goat hair (2.5 g per strand, 21 cm long) and left to stand for 20 minutes at ambient temperature. The hair was then rinsed with water and dried with a hair dryer.

[0090] Dripping To prepare the ready-to-use compositions, each of the compositions in Table 1 was mixed in a 1:1 weight ratio with the above-mentioned composition B having a pH of 2.5. 2 g of the resulting ready-to-use composition was applied to the forearm and observed for dripping over a period of 5 minutes.

[0091] evaluation Five experts were asked to evaluate the results on the colored tresses and forearms independently of each other. The experts were blinded to the treatment groups before their judgment. The experts were asked to assign an integer value to each attribute and were given a scale ranging from 1 to 10 for wet and dry hair feel as listed in Table 1. For clarity, stability and dripping, a scale of 1 to 5 was given. Higher numbers represented the best performance. The reported values ​​for each group are modal values.

Claims

1. 1. An aqueous-alcoholic dyeing composition A for keratinous fibers, preferably human keratinous fibers, more preferably human hair, having a pH between 6 and 12, a) one or more hair dyes; b) 1 or more C ２ ~C ４ and / or mixtures thereof; c) one or more nonionic surfactants having an HLB value of 11 or less; d) a molecule having the following structure: 【Chemistry 1】 (In the formula, R １ and R ２ is C １ ~C ２２ independently selected from alkyl and alkylene, provided that at least R １ is C １７ ~C ２２ alkyl or alkylene; R ３ and R ４ is C １ ~C ４ independently selected from alkyl and alkylene; X － is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to Including, the total concentration of compounds of group b) is equal to or greater than 5% by weight, relative to the total weight of composition A; Composition A contains, as a compound of group e), the following structure: 【Chemistry 2】 (In the formula, R ５ and R ６ is C １ ~C １６ independently selected from alkyl and alkylene, provided that at least R ５ is C ８ ~C １６ alkyl or alkylene; R ７ and R ８ is C １ ~C ４ is independently selected from alkyl or alkylene; Y － is a halogen, sulfate or methosulfate anion) and one or more quaternary ammonium surfactants according to e) the total concentration of one or more compounds of group ranges from 0.5 to 10% by weight relative to the total weight of composition A; composition.

2. 2. The composition of claim 1, wherein composition A has a pH of from 7 to 11, more preferably from 7.5 to 10.5, even more preferably from 8 to 10.

5.

3. 3. Composition according to claim 1 or 2, wherein one or more compounds of group a) are oxidative hair dyes and / or direct hair dyes and / or salts thereof and / or mixtures thereof, preferably wherein one or more compounds of group a) are oxidative hair dyes and / or salts thereof and / or mixtures thereof.

4. 4. The composition according to any of claims 1 to 3, wherein the one or more compounds of group b) are ethanol, isopropanol, n-propanol, n-butanol, tert-butanol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, glycerol, and / or mixtures thereof, preferably ethanol, isopropanol, 1,2-propylene glycol, and / or mixtures thereof, preferably wherein the total concentration of compounds of group b) is from 10 to 60% by weight, preferably from 15 to 50% by weight, even more preferably from 20 to 45% by weight, relative to the total weight of composition A.

5. 5. The composition of claim 1, wherein composition A is transparent to the naked human eye at an optical path length of 1 cm.

6. 6. A composition according to any one of claims 1 to 5, wherein one or more compounds of group c) have an HLB of 8 or less, preferably 7 or less, more preferably 6 or less.

7. One or more compounds of group c) are ethoxylated saturated or unsaturated fatty alcohols and / or mixtures thereof, preferably C ８ ~C １８ Preferably in the range of C １０ ~C １４ More preferably, １２ ~C １４ 7. The composition of claim 1, wherein the ethoxylated saturated or unsaturated fatty alcohol has a carbon chain length in the range of

8. 8. The composition according to claim 1, wherein the one or more compounds of group d) are steartrimonium chloride, steartrimonium bromide, steartrimonium methosulfate, behentrimonium chloride, behentrimonium bromide, behentrimonium methosulfate, distearoyldimonium chloride, distearoyldimonium bromide, and / or mixtures thereof, more preferably steartrimonium chloride and behentrimonium chloride, and / or salts thereof, more preferably steartrimonium chloride.

9. 9. Composition according to any of claims 1 to 8, wherein the total concentration of one or more compounds of group d) is from 0.5 to 10% by weight, preferably from 1 to 8% by weight, more preferably from 1.5 to 6% by weight, relative to the total weight of composition A.

10. 10. The composition according to any one of claims 1 to 9, wherein one or more compounds of group e) are cetrimonium chloride, cetrimonium bromide, dodecyltrimonium chloride and / or mixtures thereof, preferably cetrimonium chloride and / or cetrimonium bromide and / or mixtures thereof.

11. Composition according to any of the preceding claims, wherein the total concentration of one or more compounds of group e) is from 1 to 8% by weight, preferably from 1.5 to 6% by weight, relative to the total weight of composition A.

12. 12. The composition according to any of claims 1 to 11, wherein the mass ratio of compounds of group d) to compounds of group e) is from 10:1 to 1:10, preferably from 7:1 to 1:7, more preferably from 5:1 to 1:5, even more preferably from 3:1 to 1:

3.

13. A kit of parts for dyeing keratin fibres, preferably for dyeing human keratin fibres, more preferably for dyeing human hair, comprising: - a composition A according to any one of claims 1 to 12, an aqueous acidic composition B having a pH between 1 and 6 and optionally comprising one or more oxidizing agents, preferably hydrogen peroxide; - an optional bleaching composition C; Including parts kit.

14. A composition to be prepared when used, comprising composition A according to any one of claims 1 to 12 and composition B according to claim 13, and having a pH of 6 to 12.

15. The composition according to claim 14, wherein the viscosity of the ready-to-use composition is from 1,000 to 30,000 mPa·s, preferably from 1,500 to 20,000 mPa·s, more preferably from 2,000 to 10,000 mPa·s, measured at atmospheric pressure, 5 rpm and 25° C. using a Brookfield RV DVIII viscometer and spindle number 3.

16. 1. A method for dyeing keratinous fibers, preferably human keratinous fibers, more preferably human hair, comprising the steps of: i) mixing a composition A according to any one of claims 1 to 12 with an aqueous acidic composition B according to claim 13 to obtain a ready-to-use composition having a pH of 6 to 12; ii) applying the ready-to-use composition to keratin fibers and leaving it for 1 to 60 minutes; iii) rinsing off the ready-to-use composition; iv) optionally shampooing and drying the keratinous fibers; The method includes:

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