Reactive dyes, processes for the preparation thereof and the use thereof

摘要

Reactive dyes of formula (1) wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1-C4alkyl, R3 and R4 are each independently of the other hydrogen, C1-C4alkyl, C1-C4alkoxy, halogen, carboxy or sulfo, R5 and R6 are each independently of the other hydrogen, C1-C4alkyl, C1-C4alkoxy, halogen, nitro, C2-C4alkanoylamino, benzoylamino, ureido, carboxy or sulfo, D is a radical of formula wherein (R7)0-2 denotes from 0 to 2 identical or different substituents selected from the group halogen, C2-C4alkanoylamino, C1-C4alkyl and C1-C4alkoxy, X is halogen, A-Y is a radical of formula -(CH2)2-O-(CH2)2-SO2-Z1 (4a), wherein Y1 is alpha,beta-dibromopropionylamino or alpha-bromoacryloylamino and Z1 and Z2 are each independently of the other vinyl, beta-chloroethyl or beta-sulfatoethyl, m is the number 1, 2 or 3, and n is the number 1 or 2, with the proviso that D is a radical of formula (3) when A-Y is a radical of formula (4b), are especially suitable for dyeing cotton and yield dyeings having good all-round fastness properties.