| 摘要 |
A fiber-reactive dye corresponding to formula (1) in which: Fb is the radical of an azo dye, of a heavy metal complex azo dye, of a formazan dye, of a triphenodioxazine dye or of a phthalocyanine dye; U(+) is a permanent quaternary ammonium group; A(-) is a colorless anion, and Rx, R4, G, Q and n are as defined in the specification, with the proviso that the dye contains at least one group of the vinylsulfone series, such as a group of the formula -SO2Y, wherein Y is as defined in the specification, these dyes being capable of dyeing hydroxy- and/or carboxamido-containing fibres, such as cellulosic fibre and wool.
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