| 摘要 |
Methine transfer dyes have the formula <IMAGE> where L is a bridge member which does not permit any conjugation of pi -electrons between Z and Y, X is cyano, C1-C6-alkoxycarbonyl or C1-C6-monoalkylcarbamoyl, wherein alkyl may in each case be interrupted by oxygen atoms, or is C5-C7-cycloalkoxycarbonyl, C5-C7-monocycloalkylcarbamoyl, phenoxycarbonyl or monophenylcarbamoyl, and Y and Z are each independently of the other aminophenylene, which may be benzo-fused, or heterocyclyl.
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