CATIONIC DYES, THEIR PRODUCTION AND USE

摘要

The present invention relates to novel cationic dye of formula (1) wherein R₁ and R₇ are each independently of the other hydrogen, hydroxyl; unsubstituted or substituted C₁-C₆alkyl, aryl radical or C₁14 C₆alkoxy; or -NR₃R₄, wherein R₃ and R₄ are each independently of the other hydrogen, unsubstituted or substituted aryl radical or C₁-C₆alkyl, and R₂ is hydrogen, hydroxyl, unsubstituted or substituted C₁-C₆alkyl, aryl radical or C₁-C₆alkoxy, -NR₃R₄, or an organic radical of formula (2) wherein R₅ is hydrogen, unsubstituted or substituted aryl radical or C₁-C₆alkyl, and X^- is an anion. Further, the present invention relates to compositions thereof, especially comprising other dyes, to processes for the preparation thereof and to the use thereof in the dyeing of organic material, such as keratin, wool, leather, silk, cellulose or polyamides, and preferably human hair.