Patent ID: 7182792

Claim:
A composition for dyeing keratinous fibers comprising at least one direct dye chosen from compounds of the following formula (I): wherein: R 1 and R 2 , independently of each other, are chosen from: a hydrogen atom; alkyl groups comprising from 1 to 6 carbon atoms and optionally substituted with at least one group chosen from hydroxyl, amino, halogen, aryl, and C1 to C3 alkoxy groups; aryl groups comprising from 6 to 18 carbon atoms and optionally substituted with at least one group chosen from amino, hydroxyl, C1 to C3 alkoxy, and C1 to C6 alkyl groups; carboxyalkyl groups comprising from 1 to 6 carbon atoms; and sulphoalkyl groups comprising from 1 to 6 carbon atoms; R 3 is chosen from a hydrogen atom, an optionally substituted alkyl group comprising from 1 to 6 carbon atoms, an optionally substituted alkenyl group, and an aryl group optionally substituted with at least one group chosen from hydroxyl, amino, halogen, C1 to C3 alkoxy, and C1 to C3 alkyl groups; R 4 and R 5 are chosen from, independently of each other, a hydrogen atom, aryl groups and alkyl groups comprising from 1 to 6 carbon atoms, said groups being optionally substituted with at least one group chosen from hydroxyl, cyano, halogen, amino, aryl, and C1 to C4 alkoxy groups R 6 is chosen from mono- and polycyclic groups comprising from 5 to 100 carbon atoms and optionally at least one heteroatom and optionally at least one unsaturation, wherein said mono- and polycyclic groups may be substituted with at least one group chosen from hydroxyl, halogen, amino, alkoxy, alkyl, and aromatic groups, provided that the group R 6 is not a phenol, aniline, diphenylamine, acylacetoarylamide, pyridone, quinoline, isoquinoline, pyrazole, indole, aminopyridine, pyrimidine, pyrimidone, naphthol, naphthylamine, aminothiazole, thiophene or hydroxylpyridine group; X and Y are chosen from, independently of each other, a nitrogen atom and a group CR′ wherein R′ is chosen from a hydrogen atom or an alkyl group comprising from 1 to 6 carbon atoms; and A is an anionic counterion.