Patent ID: 6863698

Claim:
A method for coloring keratin-containing fibers comprising applying a coloring composition containing a coloring component compound of the formula (I): A—CH═B—CH═A′ (I) wherein ═B— is the group ═CR 1 — or the group A is selected from the group consisting of and A′ is selected from the group consisting of wherein X and Y independently of one another are selected from the group consisting of a sulfur atom, an oxygen atom or a group NR′, where R′ is a C 1-4 alkyl group optionally substituted by an SO 3 − group, R 1 is selected from the group consisting of hydrogen, a C l-4 alkyl group or an NH 2 group, R 2 is hydrogen or a halogen atom, R 5 and R 23 independently of one another are selected from the group consisting of a methyl group, an ethyl group, a hydroxyethyl group, a 2-sulfonate propyl group and a 3-sulfonate propyl group, the positive charge being compensatable by an acid anion, R 8 , R 17 , R 25 and R 26 independently of one another are selected from the group consisting of hydrogen, a C 1-4 alkyl group, a C 1-4 alkoxy group, a phenyl group, an SO 2 CF 3 group or a carboxy group esterified with a C 1-4 alkyl group and R 3 , R 4 , R 6 , R 7 , R 9-16 , R 18-21 , R 24 and R 27-37 independently of one another are selected from the group consisting of hydrogen, a halogen atom, a C 1-4 alkyl group or a C 1-4 alkoxy group optionally substituted by one or more hydroxy groups or halogen atoms, the positive charge being compensatable by a negative charge in one of the substituents or by an acid anion.