| 摘要 |
Mixture of water-soluble fiber-reactive azo dyes, preparation thereof and use thereof Described are mixtures of dyes of the general formulae (1) and (2) (see formula I) where M is hydrogen, ammonium, an alkali metal or the equivalent of an alkaline earth metal, R1 is hydrogen or sulfo, R2 is hydrogen or sulfo, X1 and X2 are each fluorine, chlorine, amino, which may be mono- or disubstituted by lower alkyl or optionally substituted aryl and one of the radicals possesses a group of the formula -SO2-Y1 or -SO2-Y2, where Y1 and Y2 are each vinyl or ethyl substituted in the .beta.-position by an alkali-eliminable grouping, or X1 and X2 are each optionally substituted morpholino or pyrimidino, cyanoamino, hydroxyl, lower alkoxy or optionally substituted aryloxy and where the groups -SO2-Y1 and -SO2-Y2 are attached to the benzene nucleus meta or para to the azo or amino group. The novel dye mixtures are used for dyeing hydroxyl- and/or carboxamidocontaining material, preferably fiber material, such as cellulose fiber materials, wool and synthetic polyamide fibers.
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