| 摘要 |
The present invention relates to pyridone dyes of formula (1), wherein R is a radical -(CR'H)n-W, R' is hydrogen, C1-C2alkyl or phenyl, Y is cyano, -CONH2 or -CH2SO3H, W is hydrogen, a radical -NR1R2 or a radical -OR3, R1 and R2 ar e each independently of the other hydrogen, unsubstituted or hydroxy- or pheny l- substituted C1-C6-alkyl, it being possible for the alkyl chain from C3 upwar ds to be interrupted by one or more oxygen atoms, or a radical of formula (3), (4) or (5), or R1 and R2 together with the nitrogen atom in -NR1R2 form a heterocyclic ring, R3 is hydrogen, unsubstituted or hydroxy-substituted C1- C6alkyl, phenyl or a radical of formula (6), R4 is alkyl or aryl, R5 and R6 are each independently of the other alkyl, aryl or heteroaryl, n is an integ er from 2 to 6, and m is an integer from 1 to 6, a process for the preparation thereof and their use in the production of coloured plastics or polymeric colour particles.
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