FARBSTOFFMISCHUNGEN VON FASERREKTIVEN AZOFARBSTOFFEN UND IHRE VERWENDUNG

A reactive dye mixture comprises (A) a sulfonated disazo dye and (B) one or more sulfonated or non-sulfonated disazo dyes. A reactive dye mixture comprises: (A) a sulfonated disazo dye of formula (I); and (B) one or more sulfonated or non-sulfonated disazo dyes of formulae (II) or (III). D ,D = an amidophenyl group of formula (IV); R = H, 1-4C alkyl or optionally substituted aryl; R ,R ,R -R ,R -R ,R ,R = H, 1-4C alkyl or alkoxy, OH, sulfo, carboxy, amido or halogen; A = a phenylene group C6H2R R , a naphthylene group of formula (V) or a polymethylene group -(CR R )k-; R ,R = as for R and R but with CN in place of sulfo and carboxy; k = 1 or higher; X ,X = H, -SO2Z or a phenyl group C6H2R R X ; X = as for X or a naphthyl group of formula (VI); Z = CH:CH2, -CH2CH2Z or OH; Z = OH or an alkali-dissociatable group; M = H, an alkali metal or an alkaline earth metal equivalent; D ,D = as for D and D or an aminosulfophenyl group of formula (VII) or (VIII); R = H, optionally substituted 1-4C alkyl, 1-4C alkoxysulfo, halogen or carboxy-substituted phenyl; R - R = 1-4C alkyl or hydroxyalkyl; B = an anion equivalent e.g. hydrogensulfate, sulfate, F, Cl, Br, (di)hydrogenphosphate, PO4, OH or acetate; Z = an N-heterocyclic fiber-reactive group of formula (IX) - (XI); V = F or Cl; U ,U = H, F or Cl; Q ,Q = Cl, F, cyanamido, OH, 1-6C alkoxy or alkylmercapto, phenoxy, sulfophenoxy, mercapto, pyridino, carboxy- or carbamoyl-pyridino, -N((R ))(W-SO2Z) or -N((R ))((R )); (R ) = H, 1-6C alkyl, sulfo(1-6C)alkyl or phenyl, the phenyl being optionally substituted by 1-4C alkyl or alkoxy, sulfo, halogen, carboxy, acetamido or ureido; (R ),(R ) = (R ) or an aminophenyl group of formula (VII) or form a cyclic system of formula -(CH2)j- or -(CH2)2-E-(CH2)2-; j = 4 or 5; E = O, S, sulfo or -N(R ); (R ) = 1-6C alkyl; W = phenylene (optionally once or twice substituted by 1-4C alkyl or alkoxy, carboxy, sulfo, Cl or Br), 1-4C alkylene-arylene, 2-6C alkylene (optionally interrupted by O, S, sulfo, amino, carbonyl or carbonamido), phenylene-CONH-phenylene (optionally substituted by 1-4C alkyl or alkoxy, OH, sulfo, carboxy, amido, ureido or halogen) or naphthylene (optionally substituted by 1 or 2 sulfo groups); R - R = H, 1-4C alkyl or alkoxy or alkylcarbonylamino, carboxy, halogen, benzoylamino or ureido; Z = not defined; a, b, c = 0 or 1; f, r = 0, 1 or 2; and t = 0, 1, 2 or 3; and with the proviso that when A = -(CR R )k-, then R = optionally substituted aryl