Piperazinyl-triazinylnaphtholsulphonic acid azo dyes
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United States of America Patent
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Oct 1, 1985
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N/A
app pub date -
Mar 9, 1984
filing date -
Apr 8, 1981
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Expired
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Abstract
Water-soluble triazine compounds which, in their betaine form correspond to the formula ##STR1## wherein R.sub.1 denotes hydrogen or alkyl, R.sub.2 and R.sub.3 independently of one another denote hydrogen, alkyl, alkenyl or aralkyl, X denotes halogen, hydroxyl, alkoxy, alkyl, aryl or an optionally monosubstituted or disubstituted amino group, the substituents of which can be involved--optionally via a hetero-atom--in cyclization, and Y denotes hydrogen or the radical of an azo dyestuff, and wherein the cyclic and acyclic radicals can carry further substituents, are used--when Y represents the radical of an azo dyestuff--for dyeing synthetic and natural materials, in particular paper, and--when Y represents hydrogen--for the preparation of azo dyestuffs.
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