Bisazo compounds and method for dyeing or printing fiber materials using the same.

摘要

A bisazo compound represented by the formula (I) in the free acid form, <CHEM> wherein D is unsubstituted or substituted phenyl or naphthyl; A and B are independently unsubstituted or substituted phenylene or naphthylene; R is hydrogen or unsubstituted or substituted lower alkyl; X is aromatic amino residue or aliphatic amino residue; and Y is a group represented by the formula, <CHEM> wherein R<1> is hydrogen or unsubstituted or substituted alkyl, W0 is unsubstituted or substituted alkylene; and Z is vinyl or -CH2CH2Z1, in which Z1 is a group capable of being split by the action of an alkali; is a reactive dye useful for dyeing or printing fiber materials having hydroxy groups and/or amide groups to brown or violet color, and can provide dyed or printed products with superior fastness properties and dyeing properties such as build-up property.