Patent ID: 7517368

Claim:
An agent for coloring keratin fibers comprising: water; optionally at least one monohydric alcohol with 1 to 4 carbon atoms; optionally at least one dihydric or trihydric alcohol with 2 to 6 carbon atoms; at least one cosmetic additive selected from the group consisting of anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, zwitterionic surfactants, thickeners, hair-care agents, moisturizers, electrolytes, antioxidants, fatty amides, sequestering agents, film-forming agents, and preservatives; and at least one indolylthiazoliumazo dye of general formula (I) wherein R1 is a saturated or unsaturated (C 1 -C 12 )-alkyl group, a halogen atom substituted (C 1 -C 12 )-alkyl group, a hydroxy-(C 1 -C 12 )-alkyl group, a (C 1 -C 6 )-alkoxy-(C 1 -C 12 )-alkyl group, an amino-(C 1 -C 12 )-alkyl group, a (C 1 -C 6 )-alkylamino-(C 1 -C 12 )-alkyl group, a di(C 1 -C 6 )-alkyl-amino-(C 1 -C 12 )-alkyl group, a cyano-(C 1 -C 12 )-alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted benzyl group; R2 and R3 can be equal or different and independently of each other stand for hydrogen, a halogen atom, a saturated or unsaturated (C 1 -C 12 )-alkyl group, a (C 1 -C 12 )-alkoxy group, a nitro group, an amino group, a (C 1 -C 12 )-alkylamino group, a di(C 1 -C 12 )-alkylamino group, a (C 1 -C 12 )-hydroxyalkylamino group, a di(C 1 -C 12 )-hydroxyalkylamino group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted heteroaryl group; R4 stands for hydrogen, a saturated or unsaturated (C 1 -C 12 )-alkyl group, a halogen atom substituted (C 1 -C 12 )-alkyl group, a hydroxy-(C 1 -C 12 )-alkyl group, (C 1 -C 6 )-alkoxy-(C 1 -C 12 )-alky group, an amino-(C 1 -C 12 )-alkyl group, a (C 1 -C 6 )-alkylamino-(C 1 -C 12 )-alkyl group, a di(C 1- 6 )-alkylamino-(C 1-C 12 )-alkyl group, a cyano-(C 1 -C 12 )-alkyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted benzyl group or a substituted or unsubstituted heteroaryl group; R5, R6, R7 and R8 can be equal or different and independently of each other stand for hydrogen, a halogen atom, a saturated or unsaturated (C 1 -C 12 )-alkyl group, a hydroxyl group, a (C 1 -C 12 )-alkoxy group, a nitro group, an amino group, a (C 1 -C 12 )-alkylamino group or a di(C 1 -C 12 )-alkylamino group, and A − stands for an anion of an organic or inorganic acid.