| abstract |
Azo dye sulfonic acid salts of the formula wherein A is a carbocyclic or heterocyclic aromatic radical, B is an aliphatic, cycloaliphatic or araliphatic amine, X is an H atom or an optionally substituted alkyl group, a cycloalkyl, aralkyl or aryl group, Y is an H or halogen atom, a nitro or cyano -, Acyl, sulfonic acid, arylsulfonyl, alkoxycarbonyl or an optionally substituted alkyl, sulfamoyl or carbamoyl group, Z is an optionally substituted alkyl group or an aryl radical, m and n are the number 1 or 2. |