Reactive dyes, processes for their production and use thereof

摘要

Reactive dyes of the formula (1) wherein one Y is hydrogen and the other Y is sulfo, R1 and R2 are hydrogen or the group -N(R1)-A-N(R2)- is a piperazine radical, A is an alkylene or arylene radical, and Z is an amino, alkoxy or alkylthio group, and the benzene ring B can contain further substituents in addition to the -SO3H-group.