Patent ID: 7399319

Claim:
A method for dyeing keratin fibers comprising applying to the keratin fibers a dye composition comprising, in a suitable dyeing medium, at least one compound chosen from compounds of formulas (I) and (II), and addition salts thereof: wherein: A is chosen from substituted or unsubstituted, 5- to 16-membered, fused or non-fused, aromatic or heteroaromatic nuclei; X is chosen from oxygen, sulfur, and CR 1 R 2 groups; R 1 and R 2 , which may be identical or different, are chosen from hydrogen, C 1 -C 6 alkyl radicals, C 1 -C 6 hydroxyalkyl radicals, C 1 -C 6 alkoxyalkyl radicals, and alkylene chains optionally comprising at least one atom chosen from oxygen and sulfur atoms; R 1 and R 2 may together form an aromatic or non-aromatic 5- or 6-membered ring optionally comprising at least one heteroatom chosen from nitrogen, oxygen, and sulfur; R 3 is chosen from hydrogen, halogen atoms, C 1 -C 6 alkyl radicals, cyano radicals, aromatic groups, phenoxy groups, and nitro radicals; W is chosen from CR 4 groups and nitrogen; R 4 is chosen from hydrogen, halogen atoms, C 1 -C 6 alkyl radicals, cyano radicals, aromatic groups, phenoxy radicals, and nitro radicals. Y is chosen from oxygen, sulfur, and NR 5 groups; R 5 is chosen from hydrogen and C 1 -C 6 alkyl radicals; Z is chosen from —C p H 2p — groups, wherein p is an integer ranging from 2 to 4, which may be optionally substituted with at least one substituent chosen from halo, hydroxyl, alkyl, haloalkyl, alkoxy, amino, monoalkylamino, dialkylamino, monohydroxyalkylamino, dihydroxyalkylamino, and carboxyl radicals; —C q H 2q CO— groups, wherein q is an integer ranging from 1 to 3, which may be optionally substituted with at least one substituent chosen from halo, hydroxyl, alkyl, haloalkyl, alkoxy, amino, monoalkylamino, dialkylamino, monohydroxyalkylamino, dihydroxyalkylamino, and carboxyl radicals; n is an integer from 1 to 4; and B is chosen from substituted or unsubstituted, 5- to 16-membered, fused or non-fused aromatic or heteroaromatic nuclei.