| 摘要 |
<p>The present invention relates to novel pigments of formula (1), wherein R1 is hydrogen or C1C12alkyl, -R2 is hydrogen, -CN, -COO-aryl, -COO-heteroaryl, -CONH-aryl or -CONH-heteroaryl, and R3 is the radical of a heteroaromatic compound of formula (II) or (III) or R2 and R3 together form a radical of formula (IV) wherein R4 and R5 are each independently of the other -CN, -COO-aryl, -COO-heteroaryl, -CONH-aryl or -CONH-heteroaryl, R6 is a radical of formula (V), (VI) R7 is halogen, and R8 and R9 are each independently of the other C1-C4alkyl, to a process for the preparation of those pigments, and to their use in the production of coloured plastics or polymeric colour particles.</p> |
