| 摘要 |
<p>Water-soluble triazine compounds which, in their betaine form correspond to the formula < IMG > (I) wherein R1 denotes hydrogen or alkyl, R2 and R3 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 cyclisation, 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.</p> |
