Patent ID: 7288120

Claim:
A process for dyeing keratin fibers comprising applying to wet or dry fibers, in the presence of at least one oxidizing agent, a dye composition comprising an azine compound of formula (VI) and/or (VII): wherein: Z 14 is chosen from oxygen, sulfur, NR 9 radicals, and NR 15 radicals; Z 15 is chosen from nitrogen, CR, 10 radicals, and CR 16 radicals; Z 16 is chosen from CR 2 radicals, CR 6 radicals, nitrogen, NR 21 radicals, and NR 22 radicals; R 25 is a linear or branched C 1 -C 8 alkyl radical that is unsubstituted or substituted with one to three substituents chosen from hydroxyl, C 1 -C 2 alkoxy, C 2 -C 4 (poly)hydroxyalkoxy, amino, C 1 -C 2 (di)alkylamino, carboxyl and sulfonic radicals; Z 17 is chosen from nitrogen, CR 11 radicals, and CR 17 radicals; Z 18 is chosen from nitrogen, CR 12 radicals, and CR 18 radicals; Z 19 is chosen from nitrogen, CR 13 radicals, and CR 19 radicals; Z 20 is chosen from nitrogen, CR 14 radicals, and CR 20 radicals; R 26 is chosen from hydrogen; linear and branched C 1 -C 16 hydrocarbon-based chains, wherein the chains are optionally saturated or unsaturated with one to three unsaturations, wherein the chains are unsubstituted or substituted with one to three substituents chosen from hydroxyl, C 1 -C 2 alkoxy, C 2 -C 4 (poly)hydroxyalkoxy, amino, C 1 -C 2 (di)alkylamino, carboxyl, sulfonic, sulfonylamino and C 2 -C 4 (poly)hydroxyalkylamino radicals, and halogen atoms, and wherein the chains may be interrupted by one or two oxygen, nitrogen, or sulfur atoms, or by SO 2 radicals; phenyl radicals that are unsubstituted or substituted with one to three substituents chosen from hydroxyl, C 1 -C 2 alkoxy, C 2 -C 4 (poly)hydroxyalkoxy, amino, C 1 -C 2 (di)alkylamino, carboxyl, sulfonic, sulfonylamino and C 2 -C 4 (poly)hydroxy-alkylamino radicals, and halogen atoms; and heteroaryl radicals chosen from pyrazolyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, triazolyl, pyridyl, pyrimidinyl, triazinyl, pyrazinyl and pyridazinyl radicals; R 27 is a linear or branched C 1 -C 8 alkyl radical that is unsubstituted or substituted with one to three substituents chosen from hydroxyl, C 1 -C 2 alkoxy, C 2 -C 4 (poly)hydroxyalkoxy, amino, C 1 -C 2 (di)alkylamino, carboxyl and sulfonic radicals; R 28 and R 29, which may be identical or different, are chosen from hydrogen; C 1 -C 6 alkyl radicals; and linear and branched C 1 -C 6 alkoxy radicals, wherein R 28 and R 29 are chosen such that at least one of the two radicals is not hydrogen; and leaving the dye composition to act on the fibers for a period of time sufficient to develop the desired coloration.