Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials

Abstract

A dye mixture comprising at least one dye of formula (formula) and at least one dye of formula (formula), wherein R1 is hydrogen or C1-C4alkyl, R2 is hydrogen or C1-C4alkyl, C1-C4alkoxy or sulfo, Q1 is a fibre-reactive radical of formula —(CH2)2- 3—SO2—Y2 (3a) or —(CH2)2-3—O—(CH2)2-3—SO2—Y3 (3b), Q2 has the meaning of Q1, or is hydrogen or C1-C4alkyl, X1 and X2 are each independently of the other halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl, Y1, Y2 and Y3 are each independently of the others vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions, Z1 and Z2 are each independently of the other —S02-Y, wherein Y is vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions, M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, k and n are each independently of the other the number 0, 1 or 2, I and q are each independently of the other the number 0 or 1, m is the number 0 or 1, and wherein the diazo component of the dye of formula (1) and the diazo component of the dye of formula (2) each independently of the other are a benzene radical or a naphthyl radical, are suitable especially for the dyeing or printing of cellulosic fibre materials, exhibit a good build-up, a good fixation rate and good washing off properties of the unfixed dyes, and good all-round fastness properties.

Dependencies are inferred from the claim text.