Composition for dyeing keratinic fibres comprising particular azodiazine direct dyes not amine substituted at position 7 and dyeing processes applying it

摘要

Composition for dyeing keratinic fibers comprises a phenazinium azo, azomethine or methine dye (I). Composition for dyeing keratinic fibers comprises a phenazinium azo, azomethine or methine dye of formula (I). [Image] R1>, R2>H; 1-30C alkyl optionally substituted with OH, amino, halo, aryl, 1-3C alkoxy; 6-18C aryl optionally substituted with amino, OH, 1-3C alkoxy, 1-6C alkyl; carboxy(1-6C)alkyl; or 1-6C sulfoalkyl; R3>optionally substituted 1-6C alkyl, 2-10C alkenyl or a 5-100C mono- or polycyclic group, optionally containing heteroatoms, optionally containing unsaturations and optionally substituted with OH, CN, halo, amino, aryl, 1-4C alkoxy or 1-4C alkyl, but not aryl when p = 0; R6>a 5-100C mono- or polycyclic group, optionally containing heteroatoms, optionally containing unsaturations and optionally substituted with OH, CN, halo, amino, aryl, 1-4C alkoxy or 1-4C alkyl; R4>, R5>H or 1-6C alkyl optionally substituted with OH, CN, halo, amino, aryl, 1-4C alkoxy; X, Y : N or CR'; R' : H or 1-6C alkyl; A : an anion; n : 0 or 1; R4>, R5>H, aryl or 1-6C alkyl optionally substituted with OH, CN, halo, amino, aryl, 1-4C alkoxy; and when n : 1, the NR4>R5> group is in the 1, 6, 8 or 9 position. An independent claim is also included for dyeing keratinic fibers by applying a composition as above, optionally together with an oxidation dye whose color is developed with an oxidizing agent, leaving the composition on the fibers until they are dyed, optionally rinsing the fibers, optionally washing the fibers and drying the fibers.