Reactive dyes, process for their preparation and use thereof: bis- vinyl or substituted ethyl sulphenyl azo reactive dyes for textiles

摘要

Reactive dyes of the formula ##STR1## wherein Y is a --CH═ CH.sub.2 or --CH.sub.2 CH.sub.2 --X radical, in which X is a leaving group, and Z is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub. 4 alkoxy or carboxy, and K is the radical of a coupling component which couples at pH. ltoreq.7, are suitable for dyeing and printing textile fibre material and give dyeings and prints of good fastness properties.