FIBER-REACTIVE PYRIDONE MONOAZO COMPOUNDS

摘要

A monoazo compound, or a salt thereof, of the formula, wherein W is a hydrogen atom or a carbamoyl group, R1 is a lower alkyl group, R2 and R3 are independently a hydrogen atom or a lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, Y is -SO2CH=CH2 or -SO2CH2CH2Z, in which Z is a group capable of being split by the action of an alkali, and X is an aromatic or aliphatic group substituted with one or two members selected from sulfonic acid group and carboxylic acid group, which is useful for dyeing fiber materials to give dyed products of a characteristic yellow color excellent in various fastness properties.