Mixture of fibre-reactive dyes and their use in a method for di-or trichromatic dyeing or printing.

Abstract

Dye mixture, comprising at least one red dyeing dye of the formula and at least one blue, yellow, orange or brown dyeing dye from the group of the formulae as annexed wherein B is an aliphatic bridging member, R1, R3 and R8 are each independently of the others hydrogen or C1-C4alkyl, R2, R4, R5, R9, R11, R12, R13, R14, R15 and R16 are each independently of the others hydrogen, C1C4aIkyI, C1-C4alkoxy or sulfo, R6 and R10 are each independently of the other amino or C1-C4alkyl, (R7)j denotes j identical or different substituents selected from the group C2-C4alkanoylamino, ureido, C1-C4alkyl and C1-C4alkoxy, (R17)i denotes i identical or different substituents selected from the group C2-C4alkanoylamino, ureido, sulfo, C1-C4alkyl and C1-C4alkoxy, X1, X2, X3, X4, X5 and X6 are each independently of the others halogen, 3-carboxypyridin-1-yl or 3carbamoylpyridin-1-yl, 11, Z2 and Z3 are each independently of the others a fibre-reactive group of the formula -SO2-Y8, (7a) or -NH-CO-(CH2)2-3-SO2-Y9 (7b), Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8 and Y9 are each independently of the others vinyl or a radical CH2-CH2-U and U is a group removable under alkaline conditions, i, j, k and I are each independently of the other the number 0, 1 or 2, m is the number 1 or 2, n and u are each independently of the other the number 1, 2 or 3, p and q are each independently of the other the number 0 or 1, 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 are suitable especially for the dichromatic or trichromatic dyeing or printing of cellulosic fibre materials and yield dyeings or prints having good reproducibility and good all-round fastness properties.