Patent ID: 7217299

Claim:
A dye composition comprising, in a medium that is suitable for dyeing keratin fibers: a) at least one dye of formula (I) below: in which: R 1 and R 2 are chosen from, independently of each other: a hydrogen atom; linear and branched C 1 –C 4 alkyl groups, optionally substituted with at least one group chosen from hydroxyl, amino, halogen, and C 1 –C 3 alkyl groups; linear and branched C 1 –C 4 alkoxy groups; a group chosen from hydroxyl, amino, halogen, and linear and branched C 1 –C 3 alkoxy groups; R 3 and R 4 are chosen from, independently of each other: a hydrogen atom; linear and branched C 1 –C 4 alkyl groups; a group chosen from carboxylic groups, in acid or salified form, and linear and branched, C 1 –C 6 carboxyalkyl groups; linear and branched C 1 –C 6 alkoxy groups; R 5 is chosen from: a hydrogen atom; a linear or branched C 1 –C 4 alkyl group; a linear or branched C 1 -C 6 alkenyl group, substituted with a group (R 6 R 7 N) n , n being equal to 0 or 1 and, when n=1, R 6 and R 7 are, independently of each other, chosen from a hydrogen atom and linear and branched C 1 –C 6 alkyl groups, optionally substituted with at least one group chosen from hydroxyl, amino, halogen, and C 1 –C 3 alkyl groups; R 8 is chosen from: a hydrogen atom; a linear or branched C 1 –C 6 alkyl group; L is a divalent group of formula L1 or L2 below: in which: n is equal to 0 or 1; R 9 , R 10 , R 11 or R 12 are chosen from, independently of each other: a hydrogen atom; linear and branched C 1 –C 6 alkyl groups, optionally substituted with at least one group chosen from hydroxyl, amino, halogen, and linear and branched C 1 –C 3 alkoxy groups; linear or branched C 1 –C 4 alkoxy groups; a group chosen from hydroxyl, amino, halogen and linear and branched C 1 –C 3 alkoxy groups; sulfonic groups; Y is a divalent group, and b) at least one synthetic dye different from the at least one dye of formula (I).