Composition, useful for coloring and optionally simultaneous brightening of keratin fibers, preferably human hair, comprises substituted 3-phenylazo-imidazo(1,5-a)pyridin-2-ium compounds in a carrier

摘要

Composition comprises substituted 3-phenylazo-imidazo[1,5-a]pyridin-2-ium compounds (I) in a carrier. Composition comprises substituted 3-phenylazo-imidazo[1,5-a]pyridin-2-ium compounds of formula (I) in a carrier. R1 : H, 1-6C-alkyl, 2-6C-alkenyl, 2-6C-hydroxyalkyl, 2-6C-polyhydroxyalkyl, 1-6C-cyanoalkyl, 1-6C-alkoxy-2-6C-alkyl, optionally substituted (hetero)aryl or (hetero)aryl-1-6C-alkyl; R2, R3 : H, 1-6C-alkyl, 2-6C-alkenyl, halo (such as Cl, Br, F or I), 1-6C-alkoxy, hydroxy, amino, nitro, carboxylic acid group, sulfonic acid group, cyano or acetyl; R4, R5 : H, 1-6C-alkyl, 2-6C-alkenyl, 1-6C-alkoxy, halo, hydroxy, amino, 1-6C-alkylamino, di(1-6C-alkyl)amino or hydroxy-1-6C-alkoxy; and X -anion, preferably halide, hydrogen sulfate, hemi sulfate, benzene sulfonate, p-toluenesulfonate, acetate, citrate, lactate, tetrafluoroborate, trifluoromethanesulfonate or hexafluorophosphate. Independent claims are included for: (1) a method for coloring and optionally simultaneously brightening of keratin fibers, preferably human hair, comprising applying optionally a pretreatment agent-M1 on the fiber, applying an agent-M2 on the fiber, where optionally the agent-M2 is added with a further agent-M3 before the application, rinsing the agent-M2 for 5-45, preferably 10-30 minutes, and optionally, after the treatment, applying a post-treatment agent-M4 on the fiber and rinsing again after exposure of some minutes, where the agent-M2 is the composition; and (2) (I) (where R1 is not H). [Image].