Patent ID: 7022143

Claim:
A composition for dyeing keratinous fibers comprising at least one cationic azo dye of the following formula (I): W 1 —N═N—W 2 —W 3 (I) wherein W 1 is a 5-membered cationic aromatic heterocycle of the following formula (II) W 2 is chosen from divalent aromatic carbonaceous and pyridine groups of the following formulae (Ill) and (IV) W 3 is chosen from 5- and 6-membered heterocycles of the following formula (V) in which formulae (II) to (V): Z 1 is chosen from an oxygen atom, a sulfur atom and a radical N(R 12 ), Z 2 is chosen from a nitrogen atom and a radical C(R 11 ), R9 and R12, which may be identical or different, are chosen from C 1 -C 8 alkyl radicals, optionally substituted by at least one radical 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; and optionally substituted phenyl radicals, R10 and R11, which may be identical or different, are chosen from a hydrogen atom; C 1 -C 4 alkyl radicals, optionally substituted by at least one radical 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; optionally substituted phenyl radicals; carboxyl radicals; and sulfonylamino radicals, R5, R6, R7, and R8, which may be identical or different, are chosen from a hydrogen atom; a chlorine atom; a bromine atom; linear and branched C 1 -C 6 hydrocarbonaceous chains, which may form at least one 3- to 6-membered carbonaceous ring, and which may be saturated or unsaturated, of which at least one carbon atom of the carbonaceous chain can be replaced by an entity chosen from oxygen, nitrogen, and sulfur atoms and from an SO 2 group, and the carbon atoms of which may be identical or different due to substitution by at least one halogen atom, with the proviso that R5, R6, R7, and R8 are not chosen from a peroxide bond or from diazo and nitroso radicals, n is an integer equal to 0 or 1, R 0 , R1, R2, R3, and R4, which may be the same or different, are chosen from a hydrogen atom; hydroxyl radicals; amino radicals; acetoxy radicals; a group —N(R13)(R14), where R13 and R14, which may be identical or different, are chosen from a hydrogen atom and C 1 -C 4 alkyl radicals substituted by at least one radical chosen from halogen atoms and from hydroxyl, C 1 -C 2 alkoxy, amino, and C 1 -C 2 amino(di)alkyl radicals; sulfonylamino radicals; carboxyl radicals; carboxamido radicals; amido radicals; mono- and dialkylamido radicals; halogen radicals; and C 1 -C 6 alkyl radicals substituted by at least one radical chosen from hydroxyl, C 1 -C 2 alkoxy, C 2 -C 4 (poly)hydroxyalkoxy, amino, and C 1 -C 2 (di)alkylamino radicals, with the proviso that at least one of the groups R 0 , R1, R2, R3, and R4 is not hydrogen, and X is chosen from organic and inorganic anions.