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 Ris hydrogen or C-Calkyl, Ris hydrogen or C-Calkyl, C-Calkoxy or sulfo, Qis a fibre-reactive radical of formula —(CH)—SO—Y(3a) or —(CH)—O—(CH)—SO—Y(3b), Qhas the meaning of Q, or is hydrogen or C-Calkyl, Xand Xare each independently of the other halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl, Y, Yand Yare each independently of the others vinyl or a radical —CH—CH—U and U is a group removable under alkaline conditions, Zand Zare each independently of the other —S0-Y, wherein Y is vinyl or a radical —CH—CH—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.