Patent ID: 7497878
Filing Date: 2009-03-03
Classification: A61K,A61Q

Abstract:
1. A cosmetic composition for dyeing human keratin fibers, comprising, in a cosmetically acceptable medium, at least one dye chosen from compounds of formula (I), and mesomeric forms thereof: wherein: A is chosen from one of the following heterocycles: wherein: in heterocycles (1)-(5), R″ 1 is chosen from: C in heterocycle (6), R″ 1 is chosen from: C in heterocycles (1)-(6), R″ 2 , R″ 3 , which may be identical or different, are chosen from: hydrogen; linear and branched C phenyl groups; amino groups optionally bearing one or two radicals which may be identical or different, chosen from: alkoxy (C in heterocycles (1)-(6), R″ 4 , R 5 , which may be identical or different, are chosen from: hydrogen; linear and branched C linear and branched C halogen atoms; and nitro groups; in heterocycles (1)-(6), R 1 is chosen from: —NH—CO—R′ —NH—SO in heterocycles (1)-(6), R 2 is chosen from: hydrogen, C amino groups bearing one or two substituents which may be identical or different, chosen from: amino groups monosubstituted by a phenyl radical optionally bearing a linear or branched C in heterocycles (1) -(6), R 3 is chosen from: hydrogen; linear and branched C C amino groups optionally bearing at least one group chosen from C in heterocycles (1) -(6), when R 2 and R 3 represent two amino groups disubstituted by two alkyl radicals which may be identical or different, carried by two adjacent carbon atoms of the aromatic nucleus, said radicals R 2 and R 3 can then form, with the carbon atoms to which each is attached, a saturated 6-membered heterocycle optionally substituted by one or two C 1 -C 4 alkyl radicals, linear or branched, which may be identical or different; and one of the carbon atoms of said heterocycle can be replaced by a carbonyl group; * at least one of the two radicals R * X is a cosmetically acceptable anion or mixture of anions.