Patent ID: 6764524
Filing Date: 2004-07-20
Classification: C09B,C25D

Abstract:
Asymmetrical 1:2 chromium complex dyes of the formula whereinX signifies â€”SO3M, â€”SO2NR1R2 or chlorine, Y signifies hydrogen, â€”SO3M or chlorine, R1 signifies hydrogen, C1-6-alkyl, C2-3-hydroxyalkyl or a radical of the formula R2 signifies hydrogen, C1-6alkyl or C2-3-hydroxyalkyl, or R1 and R2 together with the nitrogen atom to which they are attached form a 5- or 6-membered saturated heterocycle, R3 signifies hydrogen, C1-2-alkyl, chlorine, â€”COOM or â€”SO3M, R4 signifies hydrogen, C1-2-alkyl, C1-2-alkoxy, chlorine or â€”SO3M, n signifies from 0 to 3, M signifies in each case hydrogen or a non-chromophoric cation, and M+signifies hydrogen or a non-chromophoric cation.