REACTIVE DYES, THEIR PREPARATION AND THEIR USE

摘要

Reactive dyes of formula (1), wherein B is an aliphatic bridging member, R₁ is C₁-C₄alkyl, halogen or an -SO₂-Z radical, R₂ and R₃ are each independently of the other C₁-C₄alkoxy, R₄, R₅ and R₆ are each independently of the others hydrogen or unsubstituted or substituted C₁-C₄alkyl, k and q are each independently of the other the number O or 1 , p is the number O, 1 or 2, X₁ and X₂ are each independently of the other halogen, and T is halogen, a non-fibre-reactive substituent or a fibre-reactive radical of formula (2a), (2b), (2c), (2d), (2e) or (2f), wherein (R₇)_0-2 denotes from O to 2 identical or different substituents from the group halogen, C₁-C₄alkyl, C₁C₄alkoxy and sulfo, Z is vinyl or a -CH₂-CH₂-U radical and U is a group that is removable under alkaline conditions, Q is a -CH(Hal)-CH₂-HaI or -C(Hal)=CH₂ group and Hal is halogen, or T is a radical of formula (3), wherein R₁, R₂, R₃, R₄, k, p and q each have the definitions given above, are suitable especially for dyeing cotton and yield dyeings having good all-round fastness properties.