Patent ID: 7326257

Claim:
A composition for dyeing keratinous fibers, comprising an aqueous medium comprising water or a mixture of water and a cosmetically acceptable organic solvent and at least one dye chosen from the compounds of the following formula (I): in which: R 1 and R 2 , independently of each other, are chosen from hydrogen; alkyl groups having 1 to 6 carbon atoms, wherein said alkyl groups are optionally substituted with at least one group chosen from hydroxyl groups, amino groups, halogen groups, C 1 to C 3 alkoxy groups, and aryl groups; aryl groups having 6 to 18 carbon atoms, wherein said aryl groups are optionally substituted with at least one group chosen from amino groups, hydroxyl groups, C 1 to C 3 alkoxy groups, and C 1 to C 6 alkyl groups; carboxyalkyl groups having 1 to 6 carbon atoms; and sulphoalkyl groups having 1 to 6 carbon atoms; R 3 is chosen from optionally substituted alkyl groups having 1 to 6 carbon atoms, alkenyl groups having 2 to 10 carbon atoms, and cyclic groups having 5 to 100 carbon atoms, wherein said cyclic groups are aromatic or non-aromatic and optionally comprise at least one heteroatom and at least one unsaturated bond, and further wherein said cyclic group is optionally substituted with at least one group chosen from hydroxyl groups, cyano groups, halogen groups, amino groups, aryl groups, alkoxy groups, and alkyl groups having 1 to 4 carbon atoms; R 6 is a group chosen from monocyclic groups and polycyclic groups, wherein said monocyclic groups and polycyclic groups have 5 to 100 carbon atoms, and further wherein said monocyclic groups and polycyclic groups optionally comprise at least one heteroatom and at least one unsaturated bond, and are optionally substituted with at least one group chosen from hydroxyl groups, cyano groups, halogen groups, amino groups, aryl groups, alkoxy groups, and alkyl groups having 1 to 4 carbon atoms; X and Y, independently of each other, are chosen from nitrogen and CR′ groups, wherein R′ is chosen from hydrogen and alkyl groups having 1 to 6 carbon atoms; A is an anionic counterion; and n is chosen from 0 and 1; wherein when n is equal to 1, the group of formula R 4 R 5 N— occupies a position chosen from the 1-, 6-, 8-, and 9-positions on formula (I), and R 4 and R 5 , independently of each other, are chosen from hydrogen, aryl groups, and alkyl groups having 1 to 6 carbon atoms optionally substituted with at least one group chosen from hydroxyl groups, cyano groups, halogen groups, amino groups, aryl groups, and alkoxy groups having 1 to 4 carbon atoms.