Patent ID: 6752839
Filing Date: 2004-06-22
Classification: A61K,A61Q

Abstract:
A composition for oxidation dyeing of keratin fibres comprising:(a) at least one heterocyclic oxidation base chosen from: i) pyrazoles; ii) pyrimidines chosen from diaminopyrimidines, mono- and dihydroxylated diaminopyrimidines, triaminopyrimidines and monohydroxylated triaminopyrimidines; iii) pyrazolopyrimidines; and iv) the acid addition salts thereof; and (b) at least one coupler chosen from 2-substituted 5-aminoalkylphenol derivatives of formula (I) and the acid addition salts thereof: â€ƒwherein: R1 is chosen from hydrogen atoms and C2-C5 acyl groups, optionally substituted; R2 is chosen from hydrogen atoms, C1-C4 alkyl groups, optionally substituted, C1-C4 alkoxy groups, optionally substituted, and amino groups, optionally substituted; R3 is chosen from hydrogen atoms, halogen atoms, C1-C4 alkoxy groups and C1-C4 monohydroxyalkoxy groups; and R4 is chosen from C1-C4 alkyl groups, in a medium suitable for dyeing.