MIXTURES OF REACTIVE DYES AND THEIR USE IN A METHOD OF DI- OR TRICHROMATIC DYEING OR PRINTING

摘要

A dye mixture, comprising at least one blue dyeing dye of the formula (1), wherein Qi represents a bivalent radical of formula (4a), (4b) or (4c), wherein Xi denotes chlorine or fluorine, Ri is hydrogen or Ci-Cs alkyl, R2 is hydrogen, Ci-Csalkyl, Ci-C4alkoxy or sulfo, Yi is vinyl or a radical -CH2-CH2-U and U is a leaving group removable under alkaline conditions,R3 is hydrogen or Ci-Csalkyl that is unsubstituted or substituted by hydroxy, sulfo, sulfato, cyano, carboxy, C i-C4alkoxy or phenyl, r and s are each independently of the other the number 0 or 1, and t is the number 0, 1 or 2, and the sum of r, s and t is 2 or 3 and at least one yellow or red dyeing reactive dye is suitable especially for the dichromatic or trichromatic dyeing or printing of natural or synthetic polyamide fibre materials and yield dyeings or prints having good reproducibility and good all-round fastness properties.