Bifunctional vinylsulfone type fiber reactive monoazo compound.

摘要

A monoazo compound of the following formula in the free acid form, <CHEM> wherein A1 and A2 are phenylene or naphthylene, Z1 and Z2 are -SO2CH=CH2 or -SO2CH2CH2Y in which Y is a splittable group, R1 and R2 are hydrogen or alkyl, and D is sulfophenyl or sulfonaphthyl, provided that -A1-Z1 and -A2-Z2 are different from each other when D is sulfophenyl and both R1 and R2 are hydrogen, which is useful for dyeing or printing fiber materials to give dyed products of high fastness properties with extremely high color depth.