MIXTURES OF REACTIVE DYES AND THEIR USE IN A METHOD FOR TRICHROMATIC DYEING OR PRINTING

摘要

Dye mixtures, comprising at least one dye of formula (1) and at least one dye from the group of formulae (2) and (3), wherein B₁, B₂ and B₃ are each independently of the others an organic bridging member, Q₁ is C₁-C₄alkyl, halogen or a radical -SO₂-Z, Q₂ and Q₃ are each independently of the other C₁-C₄alkoxy, Q₄ is C₁-C₄alkoxy, C₁-C₄alkyl, halogen or sulfo, Q₅ is C₁-C₄alkoxy, C₁-C₄alkyl, C₁-C₄alkanoylamino, ureido, halogen or sulfo, R₁, R₂, R₃, R₄, R₅, R₆, R₇, R₈ and R₉ are each independently of the others hydrogen or unsubstituted or substituted C₁-C₄alkyl, k and q are each independently of the other the number 0 or 1, n and p are each independently of the other the number 0, 1 or 2, m is the number 0, 1, 2 or 3, t is the number 1, 2 or 3, X₁, X₂, X₃, X₄, X₅ and X₆ are each independently of the others halogen, and T₁, T₂ and T₃ are each independently of the others a non-fibre-reactive substituent or a fibre- reactive radical of formula -NH-(CH₂)_2-3-SO₂-Z (4a), -NH-(CH₂)_2-3-O-(CH₂)_2-3-SO₂-Z (4b), (4c), (4d), (4e) or (4f) wherein (R₁₀)_0-2 denotes from 0 to 2 identical or different substituents from the group halogen, C₁-C₄alkyl, C₁-C₄alkoxy and sulfo, Z is vinyl or a radical -CH₂-CH₂-U and U is a group removable under alkaline conditions, Q is a group -CH(Hal)-CH₂-Hal or -C(Hal)=CH₂, and Hal is halogen, 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.