Patent ID: 6063136
Filing Date: 2000-05-16
Classification: A61K,A61Q

Abstract:
A composition for oxidation dyeing of keratinous fibres comprising, in a medium appropriate for dyeing:at least one coupler selected from pyrrolooxazole compounds of following formula (I) and acid addition salts thereof: ##STR8## in which: R.sub.1 denotes: a hydrogen atom; a halogen atom; an alkoxy group; an aryloxy group; an acyloxy group; an arylthio group; an alkylthio group; a heteroarylthio group; a heteroaryloxy group; a thiocyano group; an alkyloxythiocarbonylthio group; a sulphonamido group; a pentafluorobutanamido group; a 2,3,4,5,6-pentafluorobenzamido group; a pyrazolyl group; an imidazolyl group; a triazolyl group; a tetrazolyl group; a benzimidazolyl group; a 1-benzyl-5-ethoxy-3-hydantoinyl group; a 1-benzyl-3-hydantoinyl group; a 5,5-dimethyl-2,4-dioxo-3-oxazolidinyl group; a 2-oxo-1,2-dihydro-1-pyridinyl group; an alkylamido group; an arylamido group; an NR.sup.III R.sup.IV group, wherein R.sup.III and R.sup.IV are identical or different and denote a C.sub.1 -C.sub.4 alkyl or a C.sub.1 -C.sub.4 hydroxyalkyl group; a carboxyl group; an alkoxycarbonyl group; an alkyloxycarbonylamino group; an aryloxycarbonylamino group; a sulphonyloxy group; an alkoxycarbonyloxy group; or an aryloxycarbonyloxy group;Z.sub.a and Z.sub.b are different from one another and denote an oxygen or nitrogen atom;R.sub.2 and R.sub.3 are identical or different and denote a hydrogen atom; a linear or branched C.sub.1 -C.sub.20 alkyl group unsubstituted or substituted by one or two R groups, wherein said R group is independently selected from a halogen atom, nitro, cyano, hydroxyl, alkoxy, aryloxy, amino, alkylamino, acylamino, carbamoyl, sulphonamido, sulphamoyl, imido, alkylthio, arylthio, aryl, alkoxycarbonyl or acyl group; an aryl group unsubstituted or substituted by one or two R groups, wherein said R group is independently selected from a halogen atom, nitro, cyano, hydroxyl, alkoxy, aryloxy, amino, alkylamino, acylamino, carbamoyl, sulphonamido, sulphamoyl, imido, alkylthio, arylthio, aryl, alkoxycarbonyl or acyl group; a 5- or 6-membered heterocycle group having at least one nitrogen, oxygen or sulphur atom, unsubstituted or substituted by one or two R groups, wherein said R group is independently selected from a halogen atom, nitro, cyano, hydroxyl, alkoxy, aryloxy, amino, alkylamino, acylamino, carbamoyl, sulphonamido, sulphamoyl, imido, alkylthio, arylthio, aryl, alkoxycarbonyl, or acyl group; a halogen atom; an acyl group; a sulphonyl group; a sulphinyl group; a phosphonyl group; a carbamoyl group; a sulphamoyl group; a cyano group; a carbamoyloxy group; a sulphonamido group; an imido group; a ureido group; a sulphamoylamino group; an alkoxycarbonylamino group; an aryloxycarbonylamino group; an alkoxycarbonyl group; an aryloxycarbonyl group; or a carboxyl group; andwhen R.sub.2 and/or R.sub.3 denotes said alkyl group, said aryl group or said 5- or 6-membered heterocycle group defined above, said R.sub.2 and R.sub.3 can be connected to the carbon atom of said at least one coupler via an oxygen, nitrogen or sulphur atom;and at least one oxidation base, wherein said at least one coupler and said at least one oxidation base are present in amounts effective to dye said keratinous fibers.