Patent ID: 6432185
Filing Date: 2002-08-13
Classification: C09B,C09D,D21H

Abstract:
An acid dye of the formula (1) in whichR1 is Aâ€”Xâ€”COOM, Aâ€”Xâ€”SO3M, or NR5R6, A is NR7 or S, X is a straight-chain or branched (C1-C16)-alkylene radical, a straight-chain or branched, hydroxyl-, carboxyl- or amino-substituted (C1-C16)-alkylene radical, an arylene radical or a hydroxyl-, carboxyl- or sulfo-substituted arylene radical; R5 is hydrogen or (C1-C4)-alkyl substituted by one or more hydroxyl or 2-hydroxyethoxy groups, R6 is (C1-C4)-alkyl substituted by one or more hydroxyl or 2-hydroxyethoxy groups, R7 is hydrogen, methyl or ethyl; M is a monovalent cation or one equivalent of a polyvalent cation, and n is 0 or 1.