Patent ID: 7422609

Claim:
A cosmetic composition for dyeing keratin fibers, comprising, in a suitable cosmetic medium, at least one oxidation base chosen from para-phenylenediamines of formula (I) and addition salts thereof: wherein: R is an aromatic ring with 5 or 6 ring members, optionally comprising at least one heteroatom chosen from nitrogen, sulphur and oxygen atoms; wherein the aromatic ring is optionally substituted; R 1 and R 2 are chosen from, independently of one another, hydrogen atoms; and linear and branched C 1 -C 6 alkyl radicals optionally substituted by at least one radical chosen from hydroxy, C 1 -C 4 alkoxy, amino, C 1 -C 4 monoalkylamino, and C 1 -C 4 dialkylamino radicals; X and Y are chosen from, independently of one another, linear and branched C 1 - C 10 alkylene radicals; R′ and R″ are chosen from, independently of one another, C 1 -C 6 alkyl radicals; C 1 -C 6 alkoxy radicals; C 1 -C 6 hydroxy-alkoxy radicals; C 1 -C 6 alkoxy(C 1 -C 6 )alkyl radicals; and C 1 -C 6 mono- and poly-hydroxy alkyl radicals; n and m are, independently of one another, integers ranging from 0 to 4; and I is an integer equal to 1 or 2.