Mixtures of blue-dyeing fiber-reactive dyes and their use for dyeing fiber material containing hydroxyl and / or carbonamide groups

摘要

Dye mixtures, containing copper (Cu) formazan dye(s) of formula (I), disazo dye(s) of formula (II) and 1 or 2 monoazo dye(s) of formula (III) are claimed. M = hydrogen (H) or an alkali metal; m = 0 or 1; Y = vinyl, beta -chloroethyl or beta -(thio)sulphatoethyl; R = H, 1-4 carbon (C) alkyl, sulpho, carboxy or chlorine (Cl); X = carbonyloxy (-CO-O-, oxy (-O-) or sulpho (-SO3-); A = a 2,4-difluoropyrimidin-6-yl or 5-chloro-2,4-difluoropyrimidin-6-yl group (IVA) or 2-amino-4-fluoro-1,3,5-triazinyl group (IVB) or carbamoyl group (IVC); R0 = H or Cl; R5 = H, 1-4 C alkyl or optionally substituted phenyl; R6 = H, 1-4 C alkyl, -(CH2)n-SO2-Y, -(CH2)n-phenylene-SO2-Y or -(CH2)p-B-(CH2)q-SO2-Y; n = 2 or 3; p, q = 2, 3 or 4; B = -O- or -NH-; R7 = -(CH2)n-SO2-Y or -(CH2)n-phenylene-SO2-Y; R1, R2, R3, R4 = H, (m)ethyl or (m)ethoxy. Also claimed are (a) a method of producing the mixture by mixing (I), (II) and (III) in the form of powders and/or aqueous solutions; and (b) a method of dyeing fibrous material containing hydroxyl and/or carbonamide groups with a solution of the dye mixture, using heat and/or alkali for fixing.