Water-soluble fibre-reactive dyes, preparation thereof and use thereof

摘要

Described are azo dyes of the general formulae <IMAGE> where Z is a group of the general formula (2) <IMAGE> where X is chlorine or fluorine, the -SO2-Y groups are each a fibre-reactive radical of the vinyl sulphone series, v is zero or 1, D<1> and D<2> are radicals of diazo components customary in fibre-reactive dyes, and K<1> and K<2> are radicals of coupling components customary in fibre-reactive dyes. These azo dyes can be used for dyeing hydroxyl- and/or carboxamido-containing materials, in particular fibre materials, such as wool, silk, synthetic polyamide and in particular cellulose fibre materials, such as cotton, in strong fast shades.