Cationic dyes

Abstract

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.

Dependencies are inferred from the claim text.