| 摘要 |
Partially crosslinked olefin polymers are obtainable by reacting a) an ethylene polymer having a density of from 0.90 to 0.98 g/cm3 or b) a polymer of from 25 to 95% by weight of a propylene homopolymer and from 5 to 75% by weight of a propylene copolymer with polymerized C2-C10-alk-1-enes, the comonomer content being from 1 to 45% by weight, based on the total polymer, in the absence of free radical initiators, with from 0.001 to 5% by weight, based on the olefin polymer, of a bismaleimido compound of the general formula (I) <IMAGE> (I) where R is C1-C20-alkyl which may be interrupted by one or more oxygen atoms, or is C5-C7-cycloalkyl or C6-C15-aryl, each of which in turn may be substituted by one or more C1-C10-alkyl and/or C1-C6-alkoxy and/or C1-C4-dialkylamino groups, or is a radical of the following formula (II) R1-Z-R2 (II) where R1 and R2 independently of one another are each C1-C10-alkyl, C5-C7-cycloalkyl or C6-C10-aryl, each of which in turn may be substituted by one or more C1-C10-alkyl and/or C1-C6-alkoxy and/or C1-C4-dialkylamino groups, and Z is C1-C10-alkyl, C1-C4-dialkylamino, oxygen or sulfonyl.
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