| 摘要 |
The invention relates to expandable styrene polymers containing (a) a styrene polymer (b) from 1 to 10 % by weight, based on (a), of a blowing agent or blowing agent mixture, (c) from 0.02 to 0.25 % by weight, based on (a), of a first coating with a coating composition comprising (c1) a bisamide of a C2-C8-alkylenediamine and an aliphatic C6-C20-carboxylic acid, and (c2) a conventional antistatic, in the weight ratio (c1):(c2) = 1 to 50, and optionally further coating compositions or coating composition mixtures and conventional additives in effective amounts. The invention also relates to a process for the production of screen fractions of bead-form expandable styrene polymers prepared by suspension polymerisation.
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