摘要:
AZO DYESTUFFS WHICH CONTAIN AT LEAST ONE RESIDUE OF A COUPLING COMPONENT OF FORMULA
-(1,4-PHENYLENE)-N WHEREIN THE CARBON ATOM WHICH IS LOCATED IN THE 4-POSITION OF THE AZACYCLOHEXANE RING IS BONDED TO 1 TO PREFERABLY 2 IDENTICAL OR MUTUALLY DIFFERENT POSITISING GROUPS WHICH ARE CAPABLE OF RENDERING AN ADJACENT METHYLENE GROUP ACID.