Patent ID: 7651535

Claim:
A method for dyeing keratin materials comprising applying a dye composition to the keratin materials by dry thermal transfer, the dye composition comprising at least one direct anthraquinone dye of the following formula (I): in which: R, independently of each other, represent: a hydrogen atom; a hydroxyl group; an amino group; or an amino group which is mono- or di-substituted with one or two radicals, which are identical or different, chosen from the radicals C 1 -C 6 alkyl, C 1 -C 6 hydroxyalkyl, and C 6 aryl optionally substituted with one or more C 1 -C 6 alkyl radicals; and R′, independently of each other, represent: a hydrogen atom; a halogen atom; a hydroxyl group; an amino group; an amino group which is mono- or di-substituted with one or two radicals, which are identical or different, chosen from the radicals C 1 -C 6 alkyl, C 1 -C 6 alkylamino, C 5 -C 8 cycloalkyl, and (C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl; a C 6 aryl radical optionally substituted with one or more groups, which are identical or different, chosen from halogen atoms and the radicals C 1 -C 6 alkyl, C 1 -C 6 alkoxy, and (C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl; a (C 6 )aryloxy group; a (C 6 )aryloxy group substituted with a (C 6 )aryl-SO 3 group, the aryl group being optionally substituted with one or more groups, which are identical or different, chosen from halogen atoms and the groups hydroxyl, trifluoromethyl, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 6 aryl, (C 6 )aryl(C 1 -C 4 )alkyl, (C 6 )aryloxy, nitro, C 2 -C 6 acyl, (C 2 -C 6 )acylamino, (C 1 -C 6 )alkylmercapto, C 6 thiophenyl, sulfonyloxy, and (C 1 -C 6 )alkylbenzenesulfonyl; a (C 6 )aryloxy group substituted with a group —SO 2 N(R a ) 2 with R a , which are identical or different, representing a hydrogen atom, a radical C 1 -C 6 alkyl, C 2 -C 6 alkenyl, (C 6 )aryl(C 1 -C 6 )alkyl, or C 5 -C 8 cycloalkyl, it being possible for the two radicals R a to form, with the nitrogen atom to which they are attached, a 5-or 6-membered heterocycle; a group —SR b with R b representing a 5-or 6-membered heterocycle, comprising the sulfur atom and optionally comprising a nitrogen, sulfur, or oxygen atom; —COOR c with R c representing a group C 1 -C 4 hydroxyalkyl, (C 1 -C 4 )alkylphenyl, C 5 -C 8 cycloalkyl, carbonyloxy(C 6 )aryl, or carbonyl(C 6 )aryl; or —SO 3 —(C 6 )aryl, the aryl radical being optionally substituted with one or more groups, which are identical or different, chosen from halogen atoms, the groups hydroxyl, trifluoromethyl, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 6 aryl, (C 6 )aryl(C 1 -C 4 )alkyl, (C 6 )aryloxy, nitro, C 2 -C 6 acyl, (C 2 -C 6 )acylamino, (C 1 -C 6 )alkylmercapto, thiophenyl, sulfonyloxy, and (C 1 -C 6 )alkylbenzenesulfonyl.