| 摘要 |
Cationic dyestuffs of the formula <IMAGE> in which R represents hydrogen, an alkyl, alkenyl, cycloalkyl or aralkyl radical, R1 represents hydrogen or an alkyl, alkenyl, cycloalkyl or aralkyl radical, with the proviso that at least one of the radicals R and R1 represents a C2-C4-hydroxyalkyl group and An(-) represents an anion, and in which the cyclic and acyclic radicals can contain nonionic substituents, their preparation and their use for dyeing polyacrylonitrile, acid modified polyesters and acid modified polyamides.
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