Process for trichromatic dyeing or printing

摘要

In the process for the trichromatic dyeing or printing of natural and synthetic polyamide fibre materials, mixtures of reactive dyes, wherein blue-dyeing reactive dyes of the formula (1) in which X is halogen, C1-C4alkyl, C1-C4alkoxy, cyano or nitro, n is the number 0, 1 or 2, q is the number 0 or 1, m is the number 1, 2 or 3, Z is halogen and Y is a CN, CHO or S(O)pR group in which p is the number 0, 1 or 2 and R is substituted or unsubstituted C1-C8alkyl or phenyl, are used together with sulfo-containing yellow- or orange-dyeing reactive dyes and sulfo-containing red-dyeing reactive dyes, have a uniform color build-up in combination with shade constancy in different concentrations and good compatibility.