Fibre-reactive dyes, their preparation and their use

摘要

Reactive dyes of formula (1) wherein Q₁, Q₂, Q₃ and Q₄ are each independently of the others hydrogen or unsubstituted or substituted C₁-C₄alkyl, A is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore, D is the radical of a diazo component, of the benzene or naphthalene series, X is halogen, 3-carboxpyridin-1-yl, 3-carbamoylpyridin-1-yl, hydroxy, C₁-C₄alkoxy unsubstituted or substituted in the alkyl moiety, phenoxy unsubstituted or substituted in the phenyl moiety, C₁-C₄alkylthio unsubstituted or substituted in the alkyl moiety, unsubstituted or substituted amino, or an N-heterocycle which may or may not contain further hetero atoms, and Y is vinyl or a radical -CH₂-CH₂-U and U is a group removable under alkaline conditions, are suitable for dyeing cellulosic or amide-group-containing fibre materials.