Patent ID: 7175672

Claim:
A composition for dyeing keratinous fibers comprising at least one direct dye of formula (I): wherein: R 1 and R 2 , which may be identical or different, are chosen from: hydrogen atoms; alkyl radicals comprising from 1 to 6 carbon atoms, it being possible for the alkyl radicals to be optionally substituted with at least one entity chosen from hydroxyl radicals, amino radicals, halogens, aryl radicals, and alkoxy radicals comprising from 1 to 3 carbon atoms; aryl radicals comprising from 6 to 18 carbon atoms, it being possible for the aryl radicals to be optionally substituted with at least one radical chosen from amino radicals, hydroxyl radicals, alkoxy radicals comprising from 1 to 3 carbon atoms, and alkyl radicals comprising from 1 to 6 carbon atoms; carboxyalkyl radicals comprising from 1 to 6 carbon atoms; and sulphoalkyl radicals comprising from 1 to 6 carbon atoms; p is equal to 0 or 1; when p is equal to 0, q is equal to 1, and Z is a single bond; when p is equal to 1, Z is chosen from alkylene radicals comprising from 1 to 4 carbon atoms, the alkylene radicals being substituted with q R 3 radicals, which may be identical or different, wherein q is an integer ranging from 1 to 5; R 3 is chosen from mono- and polycyclic radicals comprising from 5 to 100 carbon atoms, which are optionally aromatic, optionally comprising at least one heteroatom and optionally at least one unsaturation, it being possible for the mono and polycyclic radicals to be substituted with at least one entity chosen from hydroxyl radicals, cyano radicals, halogens, amino radicals, alkoxy radicals and alkyl radicals comprising from 1 to 4 carbon atoms, with the proviso that when p is equal to 0, R 3 is not an aryl radical; R 6 is chosen from mono- and polycyclic radicals comprising from 5 to 100 carbon atoms, and optionally at least one heteroatom and optionally at least one unsaturation, it being possible for the mono- and polycyclic radicals to be substituted with at least one entity chosen from hydroxyl radicals, cyano radicals, halogens, aminoradicals, aryl radicals, alkoxy radicals and alkyl radicals comprising from 1 to 4 carbon atoms; R 4 and R 5 , which may be identical or different, are chosen from hydrogen atoms, aryl radicals and alkyl radicals comprising from 1 to 6 carbon atoms, the radicals being optionally substituted with at least one entity chosen from hydroxyl radicals, cyano radicals, halogens, amino radicals, aryl radicals, and alkoxy radicals comprising from 1 to 4 carbon atoms; X and Y, which may be identical or different, are chosen from nitrogen atoms and CR′ radicals wherein R′ is chosen from a hydrogen atom and alkyl radicals comprising from 1 to 6 carbon atoms; and A is an anionic counterion.