Composition, useful for dyeing keratin fibers, comprises a coupler comprising 1-(2-hydroxy-ethyl)-1H-indol-4-ol and oxidation base comprising diamino-N,N-dihydro-pyrazolone compound in a medium

摘要

Composition (A) comprises: a coupler comprising 1-(2-hydroxy-ethyl)-1H-indol-4-ol (I) or its addition salts with an acid and oxidation base comprising diamino-N,N-dihydro-pyrazolone compound (II) or its addition salts in a medium. Composition (A) comprises: a coupler comprising 1-(2-hydroxy-ethyl)-1H-indol-4-ol (I) or its addition salts with an acid and oxidation base comprising diamino-N,N-dihydro-pyrazolone compound of formula (II) or its addition salts in a medium. Either R 1>, R 2>linear or branched 1-6C alkyl (optionally substituted by one or more OR 5>, NR 6>R 7>, carboxy group, sulfonic group, carboxamido (CONR 6>R 7>), sulfonamido group (SO 2NR 6>R 7>), heteroaryl, aryl optionally substituted by 1-4C alkyl, hydroxy, 1-2C alkoxy, amino or (di)1-2C alkylamino), aryl group (optionally substituted by one or more 1-4C alkyl, hydroxy, 1-2C alkoxy, amino, (di)alkyl-1-2C amino) or 5 or 6-membered heteroaryl ring (optionally substituted by one or more 1-4C alkyl or 1-2C alkoxy); and R 3>, R 4>H or R 1>; or R 1>-N-N-R 2>, NR 3>R 4>optionally saturated 5-7 membered heterocycle (optionally substituted by one or more halo, amino, (di)1-4C alkyl amino, hydroxyl, carboxyl, carboxamido, 1-2C alkoxy, or 1-4C alkyl (optionally substituted by one or more OH, amino, (di)-alkylamino, alkoxy, carboxyl or sulfonyl)); or NR 3>R 4>a heterocyclic 5 or 7-membered ring whose carbon atoms can be replaced by an oxygen or nitrogen and optionally substituted; R 5>H, 1-4C alkyl (optionally substituted by one or more hydroxy, 1-2C alkoxy, carboxamido (CONR 8>R 9>), sulfonyl group (SO 2R 8>), aryl optionally substituted by 1-4C alkyl, hydroxy, 1-2C alkoxy, amino or (di)1-2C alkylamino), aryl group (optionally substituted by one or more 1-4C alkyl, hydroxy, 1-2C alkoxy, amino, or (di)alkyl-1-2C amino); R 6>, R 7>R 5>, carboxamido (CONR 8>R 9>), or sulfonyl group (SO 2R 8>); and R 8>, R 9>H or 1-4C alkyl (optionally substituted by one or more hydroxy or 1-2C alkoxy). Independent claims are included for: (1) dyeing keratin fibers, comprising applying (A) on the keratin fibers in the presence of one or more oxidizing agents during sufficient time to develop the desired color; and (2) multi-compartment device comprising: a first compartment containing (A); and a second compartment containing one or more oxidizing agents. [Image].