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发明授权
US5837791A Unsaturated copolymer of ethylene and process for preparing the same 失效
乙烯的不饱和共聚物及其制备方法

Unsaturated copolymer of ethylene and process for preparing the same
摘要：
A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an .alpha.-olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the molecule, which contains 30-92% by mol of ethylene units (i), 6-70% by mol of .alpha.-olefin units (ii) and 0.1-30% by mol of triene or tetraene units (iii), and which has a molar ratio of ethylene units (i) to .alpha.-olefin units (ii) of 40/60 to 92/8 (ethylene units (i)/.alpha.-olefin units (ii)) and an intrinsic viscosity (.eta.), measured in Decalin at 135.degree. C., of 0.05 to 10 dl/g. This novel unsaturated copolymer of ethylene is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
摘要（中）：

一种新型的乙烯不饱和共聚物包括（i）乙烯，（ii）3-20个碳原子的α-烯烃和（iii）至少一个具有一个乙烯基的直链或支链非共轭三烯或四烯的无规共聚物 该分子含有30-92摩尔％的乙烯单元（i），6-70摩尔％的α-烯烃单元（ii）和0.1-30摩尔％的三烯或四烯单元（iii），其中 具有40/60至92/8（乙烯单元（i）/α-烯烃单元（ii））的乙烯单元（i）与α-烯烃单元（ii）的摩尔比和特性粘度（η），测量 在135℃的十氢化萘中为0.05〜10dl / g。 该新颖的乙烯不饱和共聚物耐候性，耐热性和耐臭氧性优异，硫化速度高。

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