Novel reactive dye mixture for colouring textile fibre material

Abstract

A dye mixture comprising at least one dye of formulaand at least one dye of formulawherein 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 –SO2-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, l 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.