| 摘要 |
<p>Azo dyestuffs devoid of carboxylic acid and sulphonic acid groups and of the formula I: <IMAGE> (I) wherein A(+) is a positively-charged aromatic or heterocyclic group, X(-) is an anion; R is hydrogen or an optionally-substituted alkyl, aryl, aralkyl or cycloalkyl group, R1 is hydrogen, or an optionally-substituted alkyl or aralkyl group and the quinoline ring may be further substituted, and processes for the manufacture of such dyestuffs which are useful for the coloration of synthetic polymeric materials such as acrylonitrile polymers and copolymers.</p> |
