Use of a particular cationic hydrazonic direct dye, a dye process for hairr, kit of compartments

摘要

Use of a dyeing composition for the human keratinous fibers comprises at least a cationic hydrazone direct dye or its tautomers in a medium. Use of dyeing composition for human keratinous fibers comprises at least a cationic hydrazone direct dye of formula (I) or its tautomers in a medium. R1, R7 : 1-6C alkyl, 1-6C hydroxyalkyl, benzyl, p-chlorobenzyl or phenyl; R4 : H or 1-6C alkyl; R2, R3, R5, R6, R8 : H, 1-6C alkyl, halo, NO 2, 1-6C alkoxy, amino, 1-6C alkylamino, 1-6C dialkylamino, sulfamoyl, 1-6C dialkylsulfamoyl, 1-6C dihydroxyalkyl amino, 1-6C dihydroxyalkyl amino or optionally condensed benzene core; R1R4 : unsaturated 5-7 rings; R5R6 = optionally 5-7 rings, where the bond between the hydrozone group and the quinoline group can be formed in any carbon atom of the quinoline heterocycle or on R5, R6 or R7; R1R2, R1R3 : optionally saturated 5-7 membered ring, optionally substituted by 1-6C alkyl; and X : an anion to neutralize the molecule. Independent claims are included for: (1) a process of applying the composition comprising (I) and optionally oxide base or coupler on the human keratinous fibers in the presence of an oxidizing agent; and (2) a device comprising compartments for dyeing the keratinous fibers in which a first compartment contains the composition and the second compartment contains an oxidizing composition. [Image].