Patent ID: 6440176
Filing Date: 2002-08-27
Classification: A61K,A61Q

Abstract:
A composition for the oxidation dyeing of keratinous fibres, wherein said composition comprises, in a medium appropriate for dyeing:at least one oxidation base chosen from para-phenylenediamines of formula (I) and acid addition salts thereof: in which:R1 is chosen from a hydrogen atom, mesyl radicals, carbamoyl radicals, and acetyl radicals, n is an integer ranging from 1 to 4; and at least one coupler chosen from compounds of formula (II) and acid addition salts thereof: in which:R2 is chosen from a hydroxyl radical and NHR4 groups where R4 is chosen from a hydrogen atom, C1-C4 alkyl radicals, C1-C4 monohydroxyalkyl radicals, and C2-C4 polyhydroxyalkyl radicals, R3 is chosen from a hydrogen atom, C1-C4 alkyl radicals, C1-C4 alkoxy radicals and halogen atoms, wherein said halogen atoms are chosen from chlorine, bromine and fluorine; it being understood that, when n=2, when R1 represents a mesyl radical, when R3 represents a methyl radical in the 6 position and when R2 represents an NHR4 group, then R4 is other than a hydrogen atom.