The present invention relates to a composition comprising crosslinkable polyethylene homopolymer, copolymer or mixture thereof. The composition includes a peroxide crosslinking agent, a crosslinking co-agent, and a metal compound having a cation selected from Group IIA and IIB of the Periodic Table of Elements. The composition is particularly useful for polymers which are formed using Ziegler-type catalysts and have complete terminal saturation. The present invention also includes a composition which has been found particularly suitable for use in critical molding processes such as rotational molding. This composition comprises a polyethylene homopolymer, copolymer, or mixture thereof. The present invention includes a method of rotational molding.
本发明涉及一种包含可交联聚
乙烯均聚物、共聚物或其混合物的组合物。该组合物包括过氧化物
交联剂、交联助剂和具有选自元素周期表 IIA 族和 IIB 族阳离子的
金属化合物。本发明组合物特别适用于使用齐格勒型催化剂形成的具有完全末端饱和的聚合物。本发明还包括一种组合物,已发现该组合物特别适用于临界模塑工艺,如旋转模塑。这种组合物包括聚
乙烯均聚物、共聚物或其混合物。本发明还包括一种滚塑方法。