Hoechst Aktiengesellschaft

Andreas Vd Eltz

Jorg Dannheim

Water-soluble dyes, such as, for example, azo dyes, heavy metal complex azo dyes, anthraquinone, phthalocyanine and formazan dyes containing the group of the formula ##STR1## are described, in which R.sup.x is hydrogen or substituted or unsubstituted lower alkyl, U is hydrogen, cyano, lower alkanoyl, lower alkoxycarbonyl, nitro, lower alkylsulfonyl or substituted or unsubstituted arylsulfonyl, V is cyano, lower alkoxycarbonyl, substituted or unsubstituted aryloxycarbonyl, carboxy, lower alkylaminocarbonyl, substituted or unsubstituted arylaminocarbonyl, lower alkylcarbonyl, substituted or unsubstituted arylcarbonyl or arylsulfonyl, aminocarbonyl, dialkylaminocarbonyl, trifluoromethyl, nitro or lower alkylsulfonyl and Q is an amino group which is mono- or disubstituted by the radical --W--(SO.sub.2 --Y).sub.z, in which W is an arylene or alkylene radical or a combination of such radicals, the alkylene radicals being those having 1 to 8 carbon atoms, and it being possible for them to be substituted, and the arylene radicals being substituted or unsubstituted phenylene or napthylene radicals, it being possible for the alkylene radicals to be interrupted by one or more hetero groups and for the alkylene and arylene moieties in the combined alkylene/arylene radicals to be separated from one another by a hetero group, the radical --SO.sub.2 --Y is a fiber-reactive group from the vinylsulfone series and

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Andreas Vd Eltz