Fibre-Reactive Dyes, Their Preparation and Their Use

Abstract

Reactive dyes of formula (1), wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1-C4alkyl, one of the radicals D1 and D2 is a radical of the formula (2), the other one of the radicals D1 and D2 is a radical of the formula (3a), or (3b), 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 (4a), —CONH—(CH2)p—SO2—Y (4b), —NH—CO—CH(Hal)-CH2-Hal (4c), —NH—CO—C(Hal)═CH2 (4d), or (4e), wherein X1 is halogen, T1 independently has the definition of X1, is a non-fibre-reactive substituent or is a fibre-reactive radical of the formula (5a), —NH—(CH2)2-3—SO2—Y (5b), or —NH—(CH2)2-3—O—(CH2)2-3—SO2—Y (5c), R4 is hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)0-2 denotes from 0 to 2 identical or different substituents from the group C1-C4alkyl, C1-C4alkoxy 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-group-containing fibre materials.

Dependencies are inferred from the claim text.