Patent ID: 6277156
Filing Date: 2001-08-21
Classification: A61K,A61Q

Abstract:
A composition for the oxidation dyeing of keratinous fibers wherein said composition comprises, in a medium suitable for dyeing,at least one coupler chosen from 2-chloro-6-methyl-3-aminophenol and acid addition salts thereof; andat least one oxidation base chosen from(a) paraphenylenediamines of formula (I) and acid addition salts thereof: ##STR6##in which:R.sub.1 is chosen from a hydrogen atom, C.sub.1 -C.sub.4 alkyl radicals, C.sub.1 -C.sub.4 monohydroxyalkyl radicals, C.sub.2 -C.sub.4 polyhydroxyalkyl radicals, (C.sub.1 -C.sub.4)alkoxy(C.sub.1 -C.sub.4)-alkyl radicals, and C.sub.1 -C.sub.4 alkyl radicals substituted by a nitrogenous, phenyl or 4'-aminophenyl group;R.sub.2 is chosen from a hydrogen atom, C.sub.1 -C.sub.4 alkyl radicals, C.sub.1 -C.sub.4 monohydroxyalkyl radicals, C.sub.2 -C.sub.4 polyhydroxyalkyl radicals, (C.sub.1 -C.sub.4)alkoxy(C.sub.1 -C.sub.4)-alkyl radicals and C.sub.1 -C.sub.4 alkyl radicals substituted by a nitrogenous group;R.sub.3 is chosen from a hydrogen atom, C.sub.1 -C.sub.4 alkyl radicals, C.sub.1 -C.sub.4 monohydroxyalkoxy radicals, C.sub.1 -C.sub.4 mesylaminoalkoxy radicals, C.sub.1 -C.sub.4 acetylaminoalkoxy radicals, C.sub.1 -C.sub.4 carbamoylaminoalkoxy radicals and C.sub.1 -C.sub.4 alkyl radicals substituted by a nitrogenous group;R.sub.4 is chosen from a hydrogen atom and C.sub.1 -C.sub.4 alkyl radicals;with the proviso that:at least one of the R.sub.1, R.sub.2, R.sub.3 and R.sub.4 radicals is other than a hydrogen atom,when the R.sub.1, R.sub.2 and R.sub.4 radicals simultaneously represent a hydrogen atom, then the R.sub.3 radical is other than a methyl radical,when the R.sub.1, R.sub.2 and R.sub.3 radicals simultaneously represent a hydrogen atom and when the R.sub.4 radical occupies the 6 position, then R.sub.4 is other than a methyl radical,when one of the R.sub.1 and R.sub.2 radicals represents a C.sub.1 -C.sub.4 alkyl radical or a C.sub.1 -C.sub.4 monohydroxyalkyl radical and when the other R.sub.1 or R.sub.2 radical represents a hydrogen atom, then at least one of the R.sub.3 and R.sub.4 radicals is other than a hydrogen atom;when R.sub.1 and R.sub.2 simultaneously represent a C.sub.1 -C.sub.4 monohydroxyalkyl radical, then at least one of the R.sub.3 and R.sub.4 radicals is other than a hydrogen atom;when R.sub.3 and R.sub.4 simultaneously represent a hydrogen atom, and when one of R.sub.1 and R.sub.2 is a C.sub.1 -C.sub.4 alkyl radical, the other radical R.sub.1 or R.sub.2 is not a C.sub.1 -C.sub.4 alkoxy(C.sub.1 -C.sub.4)alkyl radical; andwith the proviso that the paraphenylenediamines of formula (I) are not N-Ethyl-N-.beta.-hydroxyethyl-p-phenylenediamine or N,N-dimethyl-p-phenylenediamine;(b) double bases of formula (II) and acid addition salts thereof: ##STR7##in which:Z.sub.1 and Z.sub.2, which are identical or different, are chosen from a hydroxyl radical and --NH.sub.2 radicals which can be substituted by a C.sub.1 -C.sub.4 alkyl radical or by a connecting arm Y;the connecting arm Y is chosen from linear and branched alkylene chains comprising from 1 to 14 carbon atoms which can be interrupted by at least one entity chosen from nitrogenous groups and heteroatoms and which is optionally substituted by at least one radical selected from hydroxyl and C.sub.1 -C.sub.6 alkoxy radicals;R.sub.5 and R.sub.6 is chosen from a hydrogen atom, a halogen atom, C.sub.1 -C.sub.4 alkyl radicals, C.sub.1 -C.sub.4 monohydroxyalkyl radicals, C.sub.2 -C.sub.4 polyhydroxyalkyl radicals, C.sub.1 -C.sub.4 aminoalkyl radicals and a connecting arm Y;R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 and R.sub.12, which are identical or different, are chosen from a hydrogen atom, a connecting arm Y and C.sub.1 -C.sub.4 alkyl radicals;with the proviso that the compounds of formula (II) only comprise a single connecting arm Y per molecule;(c) pyrazolo[1,5-a]pyrimidines of formula (III) and acid and base addition salts thereof and tautomeric forms thereof, when a tautomeric equilibrium exists: ##STR8##in which:R.sub.13, R.sub.14, R.sub.15 and R.sub.16, which are identical or different, are chosen from a hydrogen atom, C.sub.1 -C.sub.4 alkyl radicals, aryl radicals, C.sub.1 -C.sub.4 hydroxyalkyl radicals, C.sub.2 -C.sub.4 polyhydroxyalkyl radicals, (C.sub.1 -C.sub.4)alkoxy(C.sub.1 -C.sub.4)alkyl radicals, C.sub.1 -C.sub.4 aminoalkyl radicals wherein the amine is optionally protected by an acetyl, amido or sulphonyl radical, (C.sub.1 -C.sub.4)alkylamino(C.sub.1 -C.sub.4)alkyl radicals, di((C.sub.1 -C.sub.4)alkyl) amino(C.sub.1 -C.sub.4)alkyl radicals wherein the dialkyls optionally form a carbonaceous ring or a heterocycle with 5 or 6 ring members, hydroxy(C.sub.1 -C.sub.4)alkylamino(C.sub.1 -C.sub.4)alkyl radicals and di(hydroxy(C.sub.1 -C.sub.4)alkyl)amino(C.sub.1 -C.sub.4)alkyl radicals;the X radicals, which are identical or different, are chosen from a hydrogen atom, C.sub.1 -C.sub.4 alkyl radicals, aryl radicals, C.sub.1 -C.sub.4 hydroxyalkyl radicals, C.sub.2 -C.sub.4 polyhydroxyalkyl radicals, C.sub.1 -C.sub.4 aminoalkyl radicals, (C.sub.1 -C.sub.4)alkylamino(C.sub.1 -C.sub.4)alkyl radicals, di((C.sub.1 -C.sub.4)alkyl)amino(C.sub.1 -C.sub.4)alkyl radicals wherein the dialkyls optionally form a carbonaceous ring or a heterocycle with 5 or 6 ring members, hydroxy(C.sub.1 -C.sub.4)alkyl-amino(C.sub.1 -C.sub.4)alkyl radicals, di(hydroxy(C.sub.1 -C.sub.4)alkyl)-amino(C.sub.1 -C.sub.4)alkyl radicals, amino radicals, (C.sub.1 -C.sub.4)alkylamino radicals, di((C.sub.1 -C.sub.4)alkyl)amino radicals, halogen atoms, carboxylic acid groups and sulphonic acid groups;i has the value 0, 1, 2 or 3;p has the value 0 or 1;q has the value 0 or 1;n has the value 0 or 1;with the provision that:the sum p+q is other than 0;when p+q is equal to 2, then n has the value 0 and the NR.sub.13 R.sub.14 and NR.sub.15 R.sub.16 groups occupy the (2,3), (5,6), (6,7), (3,5) or (3,7) positions;when p+q is equal to 1, then n has the value 1 and the NR.sub.13 R.sub.14 or NR.sub.15 R.sub.16 group and the OH group occupy the (2,3), (5,6), (6,7), (3,5) or (3,7) positions;(d) ortho-aminophenols;(e) diaminopyridines chosen from 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine, 2,3-diamino-6-methoxypyridine, 2-(.beta.-methoxyethyl)amino-3-amino-6-methoxypyridine, and 3,4-diaminopyridine;said composition being devoid of an additional coupler chosen from 4-hydroxyindoline, acid addition salts thereof, 6-hydroxyindoline and acid addition salts thereof.