Aqueous-alcoholic dyeing composition

Abstract

The present invention is directed to an aqueous-alcoholic dyeing composition A for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 6 to 12 comprising a) one or more hair dye(s), b) one or more C2-C4 monohydric, dihydric, or trihydric alcohol(s), and / or their mixtures, c) one or more non-ionic surfactant(s) having an HLB value of 11 or less, d) one or more quaternary ammonium surfactant(s) according to the structure (I), wherein R1 and R2 are independently selected from C1 to C22 alkyl or alkylene with the provision that at least R1 is selected from C17 to C22 alkyl or alkylene, R3 and R4 are independently selected from C1 to C4 alkyl or alkylene, and X- is a halogen, sulfate or methosulfate anion, e) one or more (poly)-alkoxylated or non-(poly)- alkoxylated fatty acid amide(s) according to the structure (II), wherein R5 is a C6 to C14 alkyl or alkylene, and R6 and R7 are independently selected from H, *CH2CH2OH, *CH2-CHCH3OH, and / or *CH2CH2R8 with R8 being alkoxy or polyalkoxy, and with the provision that at least one of R6 and R7 is different from H, wherein the total concentration of the compound(s) according to group b) is 5% by weight or more, calculated to the total weight of composition A.

Description

[0001] AQUEOUS-ALCOHOLIC DYEING COMPOSITION

[0002] Field of the invention

[0003] The present invention is directed to a dyeing composition for keratin fibers in aqueous-alcoholic medium. Additionally, a ready-to-use composition, a method for dyeing, and a kit-of-parts is disclosed.

[0004] Background of the invention

[0005] Conventional liquid hair dyeing compositions with low viscosity employ ethoxylated surfactants, which are dissolved in an aqueous-alcoholic medium with the help of anionic surfactants. After mixing with a second agent, spontaneous gel formation occurs leading to a viscosity increase that allows for safe application to the consumer’s hair without dripping.

[0006] The applicant has disclosed aqueous / alcohol dyeing compositions with low dripping and good hair feel in WO2023 / 161423. In the meantime, the applicant has found out that the dyeing intensity for dark color shades needs further improvement while maintaining cosmetic safety by low dripping.

[0007] Adding common ingredients to boost the dyeing intensity into the dyeing composition may hamper the stability and viscosity of the ready-to-use compositions, which is detrimental to consumer safety. Thus, there is a real need to develop dyeing compositions yielding a higher color intensity, especially for dark shades, while maintaining cosmetic safety and to prevent dripping of the composition onto the consumer’s head er even into the face during color application.

[0008] Summary of the invention

[0009] Therefore, the first object of the present invention is an aqueous-alcoholic dyeing composition A for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 6 to 12 comprising: a) one or more hair dye(s), b) one or more C2-C4 monohydric, dihydric, or trihydric alcohol(s), and / or their mixtures, c) one or more non-ionic surfactant(s) having an HLB value of 11 or less, d) one or more quaternary ammonium surfactant(s) according to the following structure: wherein Ri and R2 are independently selected from Ci to C22 alkyl or alkylene with the provision that at least R1 is selected from C17 to C22 alkyl or alkylene, R3 and R4 are independently selected from Ci to C4 alkyl or alkylene, and X’ is a halogen, sulfate or methosulfate anion, e) one or more (poly)-alkoxylated or non-(poly)-alkoxylated fatty acid amide(s) according to the following structure: wherein Rs is a Ce to C14 alkyl or alkylene, and Re and R7 are independently selected from H, *CH2CH2OH, H2-CHCH3OH, and / or H2CH2R8 with Rs being alkoxy or (poly)-alkoxy, and with the provision that at least one of Re and R7 is different from H, wherein the total concentration of the compound(s) according to group b) is 5% by weight or more, calculated to the total weight of composition A.

[0010] The second object of the present invention is a kit-of-parts for dyeing keratin fibers, preferably for dyeing human keratin fibers, more preferably for dyeing human hair, comprising:

[0011] - composition A as defined above,

[0012] - an aqueous acidic composition B having a pH in the range of 1 to 6 and optionally comprising one or more oxidizing agent(s), preferably hydrogen peroxide,

[0013] - an optional bleaching composition C.

[0014] The third object of the present invention is a ready-to-use hair dyeing composition having a pH in the range of 6 to 12 comprising the composition A as defined above and the composition B as above. The fourth object of the present invention is a method for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the steps of: i) mixing the composition A as defined above with an acidic aqueous composition B as above to yield a ready-to-use composition having a pH in the range of 6 to 12, then ii) applying the ready-to-use composition onto keratin fibers and leaving it for a time period in the range of 1 to 60 min, then iii) rinsing off the ready-to-use composition, then iv) optionally shampooing and drying the keratin fibers.

[0015] Detailed description of the invention

[0016] Inventors of the present invention have surprisingly found out that the dyeing compositions according to the claims of the present invention showed increased dyeing intensity on grey hair combined with a viscosity acceptable for consumer application. Additionally, the inventors found that the hair feel was improved, in particular upon washing and drying the hair.

[0017] Dyeing composition

[0018] The present invention is directed to an aqueous-alcoholic dyeing composition A for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 6 to 12 comprising: a) one or more hair dye(s), b) one or more C2-C4 monohydric, dihydric, or trihydric alcohol(s), and / or their mixtures, c) one or more non-ionic surfactant(s) having an HLB value of 11 or less, d) one or more quaternary ammonium surfactant(s) according to the following structure: wherein Ri and R2 are independently selected from Ci to C22 alkyl or alkylene with the provision that at least R1 is selected from C17 to C22 alkyl or alkylene, R3 and R4 are independently selected from Ci to C4 alkyl or alkylene, and X’ is a halogen, sulfate or methosulfate anion, e) one or more (poly)-alkoxylated or non-(poly)-alkoxylated fatty acid amide(s) according to the following structure: wherein Rs is a Ce to C14 alkyl or alkylene, and Re and R7 are independently selected from H, *CH2CH2OH, H2-CHCH3OH, and / or H2CH2R8 with Rs being alkoxy or (poly)-alkoxy, and with the provision that at least one of Re and R7 is different from H, wherein the total concentration of the compound(s) according to group b) is 5% by weight or more, calculated to the total weight of composition A.

[0019] It is preferred from the viewpoint of dyeing intensity and cosmetic safety that the pH of composition A is 7 or more, more preferably it is 7.5 or more, still more preferably it is 8 or more.

[0020] It is preferred from the viewpoint of cosmetic safety that the pH of composition A is 11 or less and more preferably 10.5 or less.

[0021] For attaining the above-mentioned effects, it is preferred that the pH of composition A is in the range of 7 to 11 , more preferably in the range of 7.5 to 10.5, furthermore preferably in the range of 8 to 10.5.

[0022] For the purpose of the present invention, the pH is measured with a glass electrode at 25°C under atmospheric pressure.

[0023] It is preferred from the viewpoint of stability that composition A is transparent as judged by the naked human eye at an optical path length of 1 cm.

[0024] Alternatively, transparency of the composition may be measured by UV-Vis spectrometry at 600 nm at an optical path length of 1 cm. The composition is transparent if the light transmission is 80% or more. It is further preferred from the viewpoint of cosmetic applicability that the viscosity of composition A prior to mixing with composition B is 1 ,000 mPas or less, preferably 750 mPas or less, furthermore preferably 500 mPas or less, measured with a Brookfield RV DVIII viscometer and spindle # 3 at 5 rpm and 25°C under atmospheric pressure.

[0025] Composition(s) according to group a)

[0026] Composition A comprises one or more hair dye(s) as compound(s) according to group a).

[0027] It is preferred from the viewpoint from commercial availability and dyeing intensity that one or more compound(s) according to group a) is / are oxidative hair dye(s) and / or direct hair dye(s), and / or their salt(s), and / or their mixtures, preferably one or more compound(s) according to group a) is / are oxidative hair dye(s) and / or their salt(s), and / or their mixtures.

[0028] Suitable oxidative dye(s) is / are p-phenylenediamine, 2-methoxy-methyl-p- phenylenediamine, p-aminophenol, 2,5-diamino-toluene, 2-n-propyl or 2-ethyl-p- phenylenediamine, 2,6-di-methyl-p-phenylene- diamine, 2-(2,5-diaminophenyl) ethanol, 1 -amino-4-bis-(2’-hydroxy-ethyl)amino- benzene, 2-(2-hydroxyethyl amino)- 5-aminotoluene, 4,4’-diaminodiphenylamine, 4-aminodiphenylamine, 2-amino-5-N,N- diethyl aminotoluene, 4-amino-N-ethyl-N-isopropyl aniline, 2-chloro-p- phenylenediamine, 1 -p-hydroxyethyl-2,5-diamino-4-chlorobenzene, 1 -p-hydroxyethyl- 2,5-diamino-4-methyl benzene, 2-methoxy-p-phenylenediamine, N, N-diethyl-p- phenylenediamine, 1 -amino-4-p-methoxyethyl aminobenzene, 1 -dimethyl-amino-4- aminobenzene, 1 -hydroxy-2, 5-diamino-4-methyl benzene, 1 -hydroxymethyl-2, 5- diaminobenzene, 1 ,3-dimethyl-2,5-diaminobenzene, 1 ,4-diamino isopropyl benzene and / or 1 -amino-4-p-hydroxypropyl aminobenzene, 1 -hydroxyethyl-4,5- diaminopyrazole, 3,4-diamino-5-hydroxypyrazole, 3,5-diaminopyrazole, 3,5-diamino pyrazol-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-triazole, 4-aminophenol and the derivatives thereof such as 4-amino-3-methylphenol, 2-chloro-4-aminophenol, 2,6-dichloro-4-aminophenol, 2,4-diamino-phenol, 2,6-dibromo-4-aminophenol, tetraamino pyrimidines, triaminohydroxy pyrimidines, diaminomono- and -dihydroxy pyrimidines, aminotriazines, 5-amino salicylic acid and / or 1 ,2,4-triamino benzene, 2,5- A-21 / 24 diaminopyridine, 2,3-diaminopyridine, 2,6-diaminopyridine, 3-amino-2-methyl amino- 6-methoxypyridine, 2-dimethyl-5-aminopyridine, 2-dimethyl aminoethyl-3- hydroxypyridine, 2-amino-4,6-dimethyl pyridine, 2-amino-3-hydroxypyridine, 3-amino- 2(p-hydroxyethyl amino)-6-methoxy pyridine, 2,6-dimethyl amino-5-aminopyridine, 2- di(hydroxyethyl) amino-5-aminopyridine, 2-hydroxyethyl amino-5-aminopyridine, 4- hydroxy-2,5,6-triaminopyrimidine, 5-amino-2-methylphenol, 2-methyl-5- hydroxyethylaminophenol, 2, 4, -diaminophenoxyethanol, 2-amino-4- hydroxyethylaminoanisol, 2-methyl-5-amino-6-chlorphenol, 1 ,3-bis(2,4- diam inophenoxy)propane, 2-bis(2-hydroxyethyl)am inotoluene, 2-am ino-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-dimethyl aminophenol, 2,6-dihydroxy- 3,5-dimethoxypyridine, 5-amino-3-methylphenol, 6-amino-3-methylphenol, 1 ,3- diamino- benzene, 1-amino-3-(2’-hy-droxyethylamino)benzene, 1-amino-3-[bis(2’- hydroxy-ethyl) amino]benzene, a-naphthol, 4,6-dichlororesorcinol, 1 ,3-diamino- toluene, 4-hydroxy-1 ,2-methylenedioxy benzene, 1 ,5-dihydroxy naphthalene, 1 ,6- dihydroxy naphthalene, 1 ,7-dihydroxy naphthalene, 2,7-dihydroxy naphthalene, 1- hydroxy-2-methyl naphthalene, 4-hydroxy-1 ,2-methyldioxy benzene, 2,4-diamino-3- chlorophenol, 5-amino-2-methoxyphenol and / or 1-methoxy-2-amino-4-(2’- hydroxyethyl amino)-benzene or the water-soluble salts thereof, and mixtures thereof.

[0029] Suitable direct hair dye(s) as compound(s) according to group a) is / are Acid Black 1 , Acid Blue 1 , Acid Blue 3, Food Blue 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 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 Violet 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10, FD&C Red 2, FD&C Red 40, FD&C Red No. 4, FD&C Yellow No. 6, FD&C Blue 1 , Food Black 1 , Food Black 2, Disperse Black 9, Disperse Violet 1 , Acid Red 52, DC Violet 2, DC Red 33, DC Orange 4, DC Red 27, DC Yellow 10, HC Blue 18, HC Red 18, HC Yellow 16, A-21 / 24

[0030] 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 . The most preferred ones are Basic Red 51 , Basic Yellow 87, Basic Orange 31 , HC Blue 17 and Basic Blue 124, HC Blue No.2, HC Blue No.4, HC Blue No.5, HC Blue No.6, HC Blue No.7, HC Blue No.8, HC Blue No.9, HC Blue No.10, HC Blue No.11 , HC Blue No.12, HC Blue No.13, HC Brown No.1 , HC Brown No.2, HC Green No.1 , HC Orange No.1 , HC Orange No.2, HC Orange No.3, HC Orange No.5, HC Red BN, HC Red No.1 , HC Red No.3, HC Red No.7, HC Red No.8, HC Red No.9, HC Red No.10, HC Red No.11 , HC Red No.13, HC Red No.54, HC Red No.14, HC Violet BS, HC Violet No.1 , HC Violet No.2, HC Yellow No.2, HC Yellow No.4, HC Yellow No.5, HC Yellow No.6, HC Yellow No.7, HC Yellow No.8, HC Yellow No.9, HC Yellow No.10, HC Yellow No.11 , HC Yellow No.12, HC Yellow No.13, HC Yellow No.14, HC Yellow No.15, 2- amino-6-chloro-4-nitrophenol, and / or their mixtures, and / or their salt(s).

[0031] It is preferred from the viewpoint of dyeing intensity that the total concentration of compound(s) according to group a) in composition A is 0.001 % by weight or more, more preferably 0.01 % by weight or more, still more preferably 0.05% by weight or more, furthermore preferably 0.1 % by weight or more, calculated to the total weight of composition A.

[0032] It is preferred from the viewpoint of economic value that the total concentration of compound(s) according to group a) in composition A is 10% by weight or less, more preferably 8% by weight or less, still more preferably 5% by weight or less, calculated to the total weight of composition A.

[0033] For attaining the above-mentioned effects, it is preferred that the total concentration of compound(s) according to group a) is in the range of 0.001 % to 10% by weight, preferably 0.01 % to 8% by weight, more preferably 0.05% to 5% by weight, still more preferably 0.1 % to 5% by weight, calculated to the total weight of composition A.

[0034] Composition(s) according to group b) A-21 / 24

[0035] Composition A comprises one or more C2-C4 monohydric, dihydric, or trihydric alcohol(s), and / or their mixtures as compound(s) according to group b), wherein the total concentration of compound(s) according to group b) is 5% by weight or more.

[0036] Suitable C2-C4 monohydric, dihydric, or trihydric alcohol(s) are ethanol, isopropanol, n-propanol, n-butanol, tert-butanol, 1 ,2-propylene glycol, 1 ,3-propylene glycol, 1 ,3- butylene glycol, glycerol, and / or their mixtures.

[0037] The preferred C2-C4 monohydric, dihydric, or trihydric alcohol(s) from the viewpoint of cosmetic compatibility is / are ethanol, isopropanol, 1 ,2-propylene glycol, and glycerol.

[0038] It is preferred from the viewpoint of composition stability that the total concentration of compound(s) according to group b), preferably the total concentration of ethanol, isopropanol, 1 ,2-propylene glycol, and glycerol, and / or their mixtures, is 10% by weight or more, more preferably 15% by weight or more, still more preferably 20% by weight or more, calculated to the total weight of composition A.

[0039] It is preferred from the viewpoint of composition stability that the total concentration of compound(s) according to group b), preferably the total concentration of ethanol, isopropanol, 1 ,2-propylene glycol, and glycerol, and / or their mixtures, is 60% by weight or less, more preferably 50% by weight or less, still more preferably 45% by weight or less, calculated to the total weight of composition A.

[0040] For attaining the above-mentioned effects, it is preferred that the total concentration of compound(s) according to group b) is in the range of in the range of 10% to 60% by weight, preferably in the range of 15% to 50% by weight, still more preferably in the range of 20% to 45% by weight, calculated to the total weight of composition A.

[0041] Composition(s) according to group c)

[0042] Composition A comprises one or more non-ionic surfactant(s) having an HLB value of 11 or less as compound(s) according to group c).

[0043] For the purpose of the present invention, the HLB value is calculated by Griffin’s well- established method.

[0044] It is preferred from the viewpoint of composition stability that one or more compound(s) according to group c) have an HLB of 8 or less, more preferably of 7 or less, still more preferably of 6 or less. A-21 / 24

[0045] Suitable compound(s) according to group c) is / are ethoxylated saturated or unsaturated fatty alcohol(s), and / or their mixtures, preferably it is an ethoxylated saturated or unsaturated fatty alcohol(s) having a carbon chain length in the range of Cs to Cis, preferably in the range of C10 to C14, more preferably in the range of C12 to Cl4.

[0046] Suitable compound(s) according to group c) are Laureth-2, Laureth-3, Laureth-4, Deceth-2, Deceth-3, Deceth-4, and / or their mixtures.

[0047] The most preferred compound(s) according to group c) is Laureth-2.

[0048] It is preferred from the viewpoint of composition stability that composition A comprises one or more compound(s) according to group c) at a total concentration of 1 % by weight or more, more preferably 5% by weight or more, still more preferably 10% by weight or more, furthermore preferably 15% by weight or more, calculated to the total weight of composition A.

[0049] It is preferred from the viewpoint of composition stability that composition A comprises one or more compound(s) according to group c) at a total concentration of 40% by weight or less, more preferably 35% by weight or less, still more preferably 30% by weight or less, furthermore preferably 25% by weight or less, calculated to the total weight of composition A.

[0050] For attaining the above-mentioned effects, it is preferred that composition A comprises one or more compound(s) according to group c) at a total concentration in the range of 1 % to 40% by weight, preferably in the range of 5% to 35% by weight, furthermore preferably 10% to 30% by weight, still more preferably 15% to 25% by weight, calculated to the total weight of composition A.

[0051] Composition(s) according to group d)

[0052] Composition A comprises one or more quaternary ammonium surfactant(s) according to the following structure: wherein R1 and R2 are independently selected from Ci to C22 alkyl or alkylene with the provision that at least R1 is selected from C17 to C22 alkyl or alkylene, R3 and R4 A-21 / 24 are independently selected from Ci to C4 alkyl or alkylene, and X’ is a halogen, sulfate or methosulfate anion, as compound(s) according to group d).

[0053] Suitable compound(s) according to group d) is / are steartrimonium chloride, steartrimonium bromide, steartrimonium methosulfate, behentrimonium chloride, behentrimonium bromide, behentrimonium methosulfate, distearoyl dimonium chloride, distearoyl dimonium bromide, and / or their mixtures, more preferably they are steartrimonium chloride and behentrimonium chloride, and / or their salt(s), more preferably it is steartrimonium chloride.

[0054] It is preferred from the viewpoint of viscosity upon mixing with composition B that composition A comprises one or more compound(s) according to group d) at a total concentration of 0.5% by weight or more, preferably 1 % by weight or more, more preferably 1 .5% by weight or more, calculated to the total weight of composition A.

[0055] It is preferred from the viewpoint of viscosity upon mixing with composition B that composition A comprises one or more compound(s) according to group d) at a total concentration of 10% by weight or less, preferably 8% by weight or less, more preferably 6% by weight or less, calculated to the total weight of composition A.

[0056] For attaining the above-mentioned effects, it is preferred that the total concentration of one or more compound(s) according to group d) is in the range of 0.5% to 10% by weight, preferably 1 % to 8% by weight, more preferably in the range of 1 .5% to 6% by weight, calculated to the total weight of composition A.

[0057] Composition(s) according to group e)

[0058] Composition A comprises one or more e) one or more (poly)-alkoxylated or non- (poly)-alkoxylated fatty acid amide(s) according to the following structure: wherein Rs is a Ce to C14 alkyl or alkylene, and Re and R7 are independently selected from H, *CH2CH2OH, *CH2-CHCH3OH, and / or *CH2CH2R8with Rs being alkoxy or (poly)-alkoxy, and with the provision that at least one of Re and R7 is different from H.

[0059] Preferably, from the viewpoint of dyeing intensity, the one or more compound(s) according to group e) have the following structure A-21 / 24

[0060] Wherein Rs is a Ce to C14 alkyl or alkylene, and Re is selected from H, H2CH2OH, H2-CHCH3OH and / or *CH2CH2Ri3 with R13 being selected from the following groups:

[0061] With n being in the range of 1 to 20, preferably in the range of 2 to 15, more preferably in the range of 3 to 10, still more preferably n is 5.

[0062] Suitable compound(s) according to group e) is / are coconut fatty acid monoethanolamide (Cocamide MEA), lauric acid monoethanolamide (Lauramide MEA), PEG-2 Cocamide, PEG-3 Cocamide, PEG-4 Cocamide, PEG-5 Cocamide, PEG-6 Cocamide, PEG-7 Cocamide, PEG-11 Cocamide, PEG-20 Cocamide, PEG-2 Lauramide, PEG-3 Lauramide, PEG-5 Lauramide, PEG-6 Lauramide, PEG-11 Lauramide, PPG-2 Cocamide, and / or their mixtures, preferably said compound(s) are selected from coconut fatty acid monoethanolamide (Cocamide MEA), PEG-5 Cocamide, and / or their mixtures, preferably said compound is / are coconut fatty acid monoethanolamide (Cocamide MEA) and PEG-5 Cocamide, and / or their mixtures.

[0063] The total concentration of one or more compound(s) according to group e) is in the range of 0.1 % to 10% by weight, preferably in the range of 0.1 % to 5% by weight, preferably in the range of 0.25% to 3% by weight, still more preferably in the range of 0.5% to 1 .5% by weight, calculated to the total weight of composition A.

[0064] Preferably, from the viewpoint of preventing dripping upon mixture with composition B, the weight ratio of compound(s) according to group d) to compound(s) according to group e) is in the range of 10:1 to 1 :10, more preferably in the range of 7:1 to 1 :7, still more preferably in the range of 5:1 to 1 :5, further still more preferably in the range of 3:1 to 1 :3.

[0065] Optional compound(s) according to group f) The composition A of the present invention may further comprise further comprises one or more quaternary ammonium surfactant(s) according to the following structure as compound(s) according to group f) from the viewpoint of further increasing hair feel, in particular dry hair feel: wherein R9 and R10 are independently selected from Ci to C16 alkyl or alkylene with the provision that at least Rs is selected from Cs to C16 alkyl or alkylene, R11 and R12 are independently selected from Ci to C4 alkyl or alkylene, and Y- is a halogen, sulfate or methosulfate anion, and still more preferably the one or more compound(s) according to group f) is / are cetrimonium chloride, cetrimonium bromide, dodecyltrimonium chloride, and / or their mixtures, preferably they is / are cetrimonium chloride and / or cetrimonium bromide, and / or their mixtures.

[0066] Preferably, the total concentration of one or more compound(s) according to group f) is in the range of 1 % to 8% by weight, preferably in the range of 1 .5% to 6% by weight, calculated to the total weight of composition A.

[0067] Kit-of-parts

[0068] The present invention is also directed to a kit-of-parts for dyeing keratin fibers, preferably for dyeing human keratin fibers, more preferably for dyeing human hair, comprising:

[0069] - composition A as defined above,

[0070] - an aqueous acidic composition B having a pH in the range of 1 to 6 and optionally comprising one or more oxidizing agent(s), preferably hydrogen peroxide,

[0071] - an optional bleaching composition C.

[0072] It is preferred from the viewpoint of stability that compositions A and B are mixed directly prior to application onto keratin fibers.

[0073] It is preferred from the viewpoint of storage stability and safety of composition B that the pH is 1 .25 or more, more preferably 1 .5 or more, furthermore preferably 2 or more. It is preferred from the viewpoint of storage stability of the composition that the pH of composition B is 5 or less, more preferably 4 or less, furthermore preferably 3 or less.

[0074] For attaining the above-mentioned effects, it is preferred that the pH of composition B is in the range of 1 .25 to 5, more preferably in the range of 1 .5 to 4, furthermore preferably in the range of 2 to 3.

[0075] It is further preferred from the viewpoint of product performance that the concentration of hydrogen peroxide in composition B, if present, is 1 % by weight or more, more preferably 3% by weight or more, furthermore preferably 6% by weight or more, still more preferably 9% by weight or more, calculated to the total weight of composition B.

[0076] It is further preferred from the viewpoint of product performance and user safety that the concentration of hydrogen peroxide in composition B, if present is 20% by weight or less, more preferably 15% by weight or less, furthermore preferably 12% by weight or less, calculated to the total weight of composition B.

[0077] For attaining the above-mentioned effects, it is preferred that the concentration of hydrogen peroxide in composition B, if present, is in the range of 1 % to 20% by weight, more preferably 3% to 15% by weight, furthermore preferably 6% to 12% by weight, still more preferably in the range of 9% to 12% by weight, calculated to the total weight of composition B.

[0078] Suitable mixing rations by weight of compositions A and B are in the range of 5:1 to 1 :5, preferably in the range of 3:1 to 1 :3, more preferably in the range of 2:1 to 1 :2.

[0079] The optional bleaching composition C may be a bleaching powder composition or an aqueous lightening composition.

[0080] The bleaching powder composition may comprise one or more persalt(s) and / or peroxy salt(s). Suitable persalts and / or peroxy salts are sodium persulfate, potassium persulfate, ammonium persulfate, earth alkali peroxides such as magnesium peroxide, melamine peroxide or urea peroxide or phthalimidoperoxy hexanoic acid. The preferred persalts from the viewpoint of bleaching power are sodium, potassium, and ammonium persulfate.

[0081] It is preferred from the viewpoint of bleaching power and cosmetic safety that the total concentration of persalts and / or peroxy salts in the bleaching powder A-21 / 24 composition is in the range of 10% to 80% by weight, preferably 15% to 70% by weight, more preferably 20% to 60% by weight, and still more preferably 25% to 60% by weight, calculated to the total weight of the bleaching composition C.

[0082] Independent of the product form of the bleaching composition C, it is preferred that is comprises one or more alkalizing agent(s), suitably inorganic and / or organic alkalizing agent(s), and / or their mixtures.

[0083] Suitably, inorganic alkalizing agent(s) are metasilicates, carbonates, and / or bicarbonates, and / or their alkali or earth alkali salts, and / or their mixtures.

[0084] Suitably, organic alkalizing agent(s) are alkyl- or alkanolamines according to the general structure wherein R14, R15, and Rie are same or different H, from Ci to C4, C3 to C4 unsaturated alkyl, C3 to C4 branched alkyl, Ci to C4 hydroxyl alkyl, C3 to C4 unsaturated hydroxyl alkyl, C3 to C4 branched hydroxyl alkyl, with the condition that at least one of R14, R15, or R16 is different from H, and / or their mixtures.

[0085] Suitable organic alkalizing agents are monoethanolamine, diethanolamine, triethanolamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, and 2-aminomethyl propanol.

[0086] The most preferred organic alkalizing agent(s)for bleaching composition C are selected from monoethanolamine, 2-aminomethyl propanol, and sodium metasilicate, and / or their mixtures.

[0087] It is preferred from the viewpoint of alkalinity and stability that composition C may comprise one or more alkalizing agent(s) at a total concentration in the range of 0.25% to 30% by weight, preferably 0.5% to 25% by weight, more preferably 1 % to 20% by weight, calculated to the total weight of the bleaching composition C.

[0088] Ready-to-use-composition A-21 / 24

[0089] The present invention is also directed to a ready-to-use composition having a pH in the range of 6 to 12 comprising composition A as defined above and composition B as defined above.

[0090] It is preferred from the viewpoint of dyeing intensity that the pH of the ready-to-use composition is in the range of 6.5 to 11 .5, more preferably in the range of 7 to 11 .

[0091] In one preferred embodiment and from the viewpoint of reducing hair damage, the pH of the ready-to-use composition is in the range of 6.5 to 7.0.

[0092] In another preferred embodiment and from the viewpoint of dyeing intensity, the pH of the ready-to-use composition is in the range of 8 to 12.

[0093] The ready-to-use composition is prepared directly prior to application onto keratin fibers. By mixing compositions A and B, the viscosity of the ready-to-use composition increases with respect to the viscosity of composition A to a range of 1 ,000 to 30,000 mPas, preferably in the range of 1 ,500 to 20,000 mPas, more preferably in the range of 2,000 to 10,000 mPas, measured with a Brookfield RV DVIII viscometer and spindle # 3 at 5 rpm and 25°C under atmospheric pressure.

[0094] Dyeing method

[0095] The present invention is also directed to a method for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the steps of: i) mixing the composition A as defined above with an acidic aqueous composition B as defined above to yield a ready-to-use composition having a pH in the range of 6 to 12, ii) applying the ready-to-use composition onto keratin fibers and leaving it for a time period in the range of 1 to 60 min, iii) rinsing off the ready-to-use composition, iv) optionally shampooing and drying the keratin fibers.

[0096] Preferably, the pH of the ready-to-use composition in step i) is in the range of 6.5 to 11 .5, more preferably in the range of 7 to 11 .

[0097] In one preferred embodiment and from the viewpoint of reducing hair damage, the pH of the ready-to-use composition is in the range of 6.5 to 7.0. A-21 / 24

[0098] In another preferred embodiment and from the viewpoint of dyeing intensity, the pH of the ready-to-use composition is in the range of 8 to 12.

[0099] Preferably, the ready-to-use composition is left on keratin fibers in step ii) for a time period in the range of 2 min to 45 min, more preferably for a time period in the range of 5 min to 35 min, furthermore preferably in the range of 5 min to 20 min.

[0100] The following examples are to illustrate the invention, but not to limit it.

[0101] A-21 / 24

[0102] EXAMPLES

[0103] Table 1

[0104] The following compositions A were prepared:

[0105] Composition B

[0106] % by weight

[0107] Hydrogen peroxide 6.0 EDTA 0.5

[0108] Phosphoric acid ad pH 2.5

[0109] Water ad 100.0 A-21 / 24

[0110] Compositions A of table 1 and composition B as above were mixed in a weight ratio of 1 :1 to yield a ready-to-use composition having a pH of 7.0. The ready-to-use compositions had a viscosity in the range of 1 ,500 mPas to 4,000 mPas measured with a Brookfield RV DVIII viscometer and spindle # 3 at 5 rpm and 25°C under atmospheric pressure.

[0111] Discussion of results

[0112] It has been shown that the inventive examples showed surprisingly better color uptake and higher viscosity of the gel being formed after mixing with a composition B in view of the comparative examples (s. Table 1 , Comp. ex. 1 -2).

[0113] Methods

[0114] Preparation of compositions

[0115] Compound(s) according to group c) were dissolved in compound(s) according to group b), then the other ingredients were added. Finally, the alcoholic composition was diluted with water.

[0116] Hair dyeing

[0117] To prepare a ready-to-use composition, each of the compositions from table 1 were mixed with composition B displayed above having a pH of 2.5 in a weight ratio of 1 :1 . 2 g of the resulting ready-to-use compositions were applied to Chinese White hair (2.5 g per bundle, 21 cm long) and left for 20 min at ambient temperature. The hair was then rinsed-off with water and blow-dried.

[0118] Colorimetric measurements - L values

[0119] The colorimetric data were obtained with a color-difference meter (Datacolor Check II Plus) in the CIE colorimetric system (L‘). Differences in L* (AL*) were calculated by the following formula, wherein L*o was measured prior to coloring the hair streaks and L*i was measured after coloring the hair streaks.

[0120] Dripping

[0121] To prepare a ready-to-use composition, each of the compositions from table 1 were mixed with composition B displayed above in a weight ratio of 1 :1. 2 g of the resulting A-21 / 24 ready-to-use compositions were applied to forearm, and dripping was monitored over 5 minutes.

[0122] Evaluations

[0123] 5 experts were independently of each other asked to rate the results on the forearms. Experts were not informed on the treatment groups prior to their judgement. They were asked to assign an integer value to each property as listed in table 1 . Higher numbers represented the best performance. The reported values for each group are modal values.

Claims

Claims1 . An aqueous-alcoholic dyeing composition A for keratin fibers, preferably for human keratin fibers, more preferably for human hair, having a pH in the range of 6 to 12 comprising: a) one or more hair dye(s), b) one or more C2-C4 monohydric, dihydric, or trihydric alcohol(s), and / or their mixtures, c) one or more non-ionic surfactant(s) having an HLB value of 11 or less, d) one or more quaternary ammonium surfactant(s) according to the following structure:wherein R1 and R2 are independently selected from Ci to C22 alkyl or alkylene with the provision that at least R1 is selected from C17 to C22 alkyl or alkylene, R3 and R4 are independently selected from Ci to C4 alkyl or alkylene, and X’ is a halogen, sulfate or methosulfate anion, e) one or more (poly)-alkoxylated or non-(poly)-alkoxylated fatty acid amide(s) according to the following structure:wherein Rs is a Ce to C14 alkyl or alkylene, and Re and R7 are independently selected from H, *CH2CH2OH, *CH2-CHCH3OH, and / or H2CH2R8 with Rs being alkoxy or (poly)-alkoxy, and with the provision that at least one of Re and R7 is different from H,Wherein the total concentration of the compound(s) according to group b) is 5% by weight or more, calculated to the total weight of composition A.

2. The composition according to claim 1 characterized in that the pH of composition A is in the range of 7 to 11 , more preferably in the range of 7.5 to 10.5, furthermore preferably in the range of 8 to 10.5.

3. The composition according to any of the claims 1 and / or 2 characterized in that one or more compound(s) according to group a) is / are oxidative hair dye(s) and / or direct hair dye(s), and / or their salt(s), and / or their mixtures, preferably one or more compound(s) according to group a) is / are oxidative hair dye(s) and / or their salt(s), and / or their mixtures.

4. The composition according to any of the preceding claims characterized in that one or more compound(s) according to group b) is / are ethanol, isopropanol, n- propanol, n-butanol, tert-butanol, 1 ,2-propylene glycol, 1 ,3-propylene glycol, 1 ,3- butylene glycol, glycerol, and / or their mixtures, preferably they is / are ethanol, isopropanol, 1 ,2-propylene glycol, and / or their mixtures, and preferably the total concentration of compound(s) according to group b) is in the range of 10% to 60% by weight, preferably in the range of 15% to 50% by weight, still more preferably in the range of 20% to 45% by weight, calculated to the total weight of composition A.

5. The composition according to any of the preceding claims characterized in that one or more compound(s) according to group c) have an HLB of 8 or less, preferably of 7 or less, more preferably of 6 or less, and still more preferably the one or more compound(s) according to group c) are ethoxylated saturated or unsaturated fatty alcohol(s), and / or their mixtures, preferably it is an ethoxylated saturated or unsaturated fatty alcohol(s) having a carbon chain length in the range of Cs to Cis, preferably in the range of C10 to C14, more preferably in the range of C12 to C14, and preferably the total concentration of said compound(s) according to group c) is in the range of 1 % to 40% by weight, preferably in the range of 5% to 35% by weight, further more preferably 10% to 30% by weight, still more preferably 15% to 25% by weight, calculated to the total weight of composition A.

6. The composition according to any of the preceding claims characterized in that one or more compound(s) according to group d) is / are steartrimonium chloride, steartrimonium bromide, steartrimonium methosulfate, behentrimonium chloride, behentrimonium bromide, behentrimonium methosulfate, distearoyl dimonium chloride, distearoyl dimonium bromide, and / or their mixtures, more preferably they are steartrimonium chloride and behentrimonium chloride, and / or their salt(s), more preferably it is steartrimonium chloride, and still more preferably the total concentration of one or more compound(s) according to group d) is in the range of0.5% to 10% by weight, preferably 1 % to 8% by weight, more preferably in the range of 1 .5% to 6% by weight, calculated to the total weight of composition A.

7. The composition according to any of the preceding claims characterized in that the one or more compound(s) according to group e) have the following structure oJL RRs NHfiBWherein Rs is a Ce to C14 alkyl or alkylene, and Re is selected from H, H2CH2OH, H2-CHCH3OH and / or *CH2CH2Ri3 with R13 being selected from the following groups:With n being in the range of 1 to 20, preferably in the range of 2 to 15, more preferably in the range of 3 to 10, still more preferably n is 5.

8. The composition according to any of the preceding claims characterized in that the one or more compound(s) according to group e) are coconut fatty acid monoethanolamide, lauric acid monoethanolamide, PEG-2 Cocamide, PEG-3 Cocamide, PEG-4 Cocamide, PEG-5 Cocamide, PEG-6 Cocamide, PEG-7 Cocamide, PEG-11 Cocamide, PEG-20 Cocamide, PEG-2 Lauramide, PEG-3 Lauramide, PEG-5 Lauramide, PEG-6 Lauramide, PEG-11 Lauramide, PPG-2 Cocamide, and / or their mixtures, preferably said compound(s) are selected from coconut fatty acid monoethanolamide, PEG-5 Cocamide, and / or their mixtures.

8. The composition according to any of the preceding claims characterized in that the total concentration of one or more compound(s) according to group e) is in the range of 0.1 % to 10% by weight, preferably in the range of 0.1 % to 5% by weight, preferably in the range of 0.25% to 3% by weight, still more preferably in the range of 0.5% to 1.5% by weight, calculated to the total weight of composition A.

9. The composition according to any of the preceding claims characterized in that the composition A further comprises one or more quaternary ammonium surfactant(s) according to the following structure as compound(s) according to group f):wherein R9 and R10 are independently selected from Ci to C16 alkyl or alkylene with the provision that at least Rs is selected from Cs to C16 alkyl or alkylene, R11 and R12 are independently selected from Ci to C4 alkyl or alkylene, and Y- is a halogen, sulfate or methosulfate anion, and still more preferably the one or more compound(s) according to group f) is / are cetrimonium chloride, cetrimonium bromide, dodecyltrimonium chloride, and / or their mixtures, preferably they is / are cetrimonium chloride and / or cetrimonium bromide, and / or their mixtures, and preferably the total concentration of one or more compound(s) according to group f) is in the range of 1 % to 8% by weight, preferably in the range of 1 .5% to 6% by weight, calculated to the total weight of composition A.

10. The composition according to any of the preceding claims characterized in that composition A is transparent judged by the naked human eye at an optical path length of 1 cm.11 . The composition according to any of the preceding claims characterized in that the weight ratio of compound(s) according to group d) to compound(s) according to group f) is in the range of 10:1 to 1 :10, preferably in the range of 7:1 to 1 :7, more preferably in the range of 5:1 to 1 :5, still more preferably in the range of 3:1 to 1 :3.

12. A kit-of-parts for dyeing keratin fibers, preferably for dyeing human keratin fibers, more preferably for dyeing human hair, comprising:- composition A as defined in any of the claims 1 to 11 ,- an aqueous acidic composition B having a pH in the range of 1 to 6 and optionally comprising one or more oxidizing agent(s), preferably hydrogen peroxide,- an optional bleaching composition C.

13. A ready-to-use hair dyeing composition having a pH in the range of 6 to 12 comprising the composition A as defined any of the claims 1 to 11 and the composition B as defined in claim 12.

14. The composition according to claim 13 characterized in that the viscosity of the ready-to-use mixture is in the range of 1 ,000 to 30,000 mPas, preferably in the range of 1 ,500 to 20,000 mPas, more preferably in the range of 2,000 to 10,000 mPas, measured with a Brookfield RV DVIII viscometer and spindle # 3 at 5 rpm and 25°C under atmospheric pressure.

15. A method for dyeing keratin fibers, preferably human keratin fibers, more preferably human hair, comprising the steps of: i) mixing the composition A as defined in any of the claims 1 to 11 with an acidic aqueous composition B as defined in claim 12 to yield a ready-to-use composition having a pH in the range of 6 to 12, then ii) applying the ready-to-use composition onto keratin fibers and leaving it for a time period in the range of 1 to 60 min, then iii) rinsing off the ready-to-use composition, then iv) optionally shampooing and drying the keratin fibers.

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