Fibre-Reactive dyes, their preparation and their use

Abstract

Reactive dye of formula wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1C4alkyI, one of the radicals D1 and D2 is a radical of the formula the other one of the radicals D1 and D2 is a radical of the formula wherein (R3)n denotes n identical or different substituents selected from the group C1-C4alkyl, C1-C4alkoxy and sulfo, Z1 is a radical of the formula -SO2-Y -CON H-(CH2)p-SO2-Y NH-CO-CH(Hal)-CH2-Hal (4c), NH-CO-C(Hal)=CH2 (4d),or wherein X1 is halogen, T1 independently has the definition of X1, is a non-fibre-reactive substituent or is a fibrereactive radical of the formula NH-(CH2)2_3-SO2-Y or -NH-(CH2)2_3-O-(CH2)2-3-SO2-Y R4 is hydrogen or unsubstituted or substituted C1C4alkyl, (R5)0-2 denotes from 0 to 2 identical or different substituents from the group C1-C4alkyl, C1C4alkoxy and sulfo, Hal is halogen, Y is vinyl or a -CH2-CH2-U radical and U is a group that is removable under alkaline conditions, k is the number 0, 1 or 2, m is the number 2, 3 or 4, n is the number 0, 1 or 2, and p is the number 2, 3 or 4, are suitable for dyeing cellulosic or amide-groupcontaining fibre materials.