| 摘要 |
The invention relates to novel cationic isothiazolazo compounds of the formula <IMAGE> wherein R1 is unsubstituted or substituted C1-C4alkyl R2 is hydrogen or C1-C4alkyl, R3 is hydrogen or C1-C4alkyl which is unsubstituted or substituted by halogen, cyano, C1-C4alkoxy or by phenyl which is in turn unsubstituted or substituted by methyl, methoxy and/or halogen, R5 and R6 are each independently of the other hydrogen or C1-C4alkyl R7 is hydrogen, C1-C4alkyl or phenyl, Y is the direct bond or the group <IMAGE> wherein R4 is hydrogen or C1-C4alkyl, R8 and R9 are each hydrogen and, if Y is the direct bond, they are each independently of the other hydrogen or C1-C4alkyl, and X(-) is an anion. These compounds can be used as dyes for dyeing or printing in particular polyacrylonitrile materials in blue shades.
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