| abstract |
Water-soluble azo compounds which are, in the free acid form, represented by the formula (I): <IMAGE> wherein X is a hydroxyl or methoxy group and Y and Z are independently hydrogen, chlorine, or a methyl or sulfonic acid group with the proviso that the total number of sulfonic acid groups in formula (I) is 3 or 4 or are copper complex salts thereof are useful for dyeing cellulosic, polyester and acrylic fibers. |