| 摘要 |
Water-soluble cationic dyestuffs of the formulae <IMAGE> <IMAGE> WHEREIN R DEG is hydrogen, lower-alkyl or hydroxy-lower-alkyl; R1 is lower-alkyl, lower-alkenyl or hydroxy-lower-alkyl; R2 is lower-alkyl, lower-alkenyl, hydroxy-lower-alkyl or -(lower-alkylene)-NR DEG Y or R1 and R2 together with the nitrogen atom, are pyrrolidino, piperidino or 4-lower-alkanoyl piperazino; Y is hydrogen or <IMAGE> wherein R is hydrogen, lower-alkyl, lower-alkenyl, phenyl or phenyl-lower-alkyl; A is a member selected from the group consisting of an aromatic azo dyestuff residue attached to the quaternary ammonium nitrogen atom through a lower-alkylene bridge.
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