以下为句子列表：
英文: Abstract: The synthesis,characterization,reaction mechanism and progress in indus try of ethylene/propylene elastomer with metallocene catalysts were discussed,Th e metallocene catalytic systems and the structure and properties of the elastome r were intr
中文: 文摘:论述了茂金属乙丙弹性体的合成、表征、反应机理及工业化进程，着重介绍了茂金属催化体系和茂金属乙丙弹性体的结构和性能。
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英文: Basic properties of various polyethylene polymerized by metallocene catalysts and various branched polyethylene polymerized by oligomerization cocatalysts were researched, and the results show that metallocene branched polyethylene polymerized by oligomer
中文: 摘要研究了不同茂金属催化剂聚合的茂金属聚乙烯及不同齐聚－共聚催化剂聚合的茂金属支化聚乙烯的基本性能，结果表明：以齐聚－共聚催化剂体系的茂金属支化聚乙烯比以单、双茂金属催化剂的茂金属聚乙烯相对分子质量高、相对分子质量分布宽，拉伸性能优良。
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英文: Ethylene/octene copolymer sythesized by metallocene catalyst was a new kind of thermoplastic elastomer, which was molded as elastomer material by plastic common molding process such as injection, extrusion and blowing and also by rubber process such as ch
中文: 采用茂金属催化剂合成的乙烯－辛烯共聚物是一种新型热塑性弹性体，可用注射、挤出、吹塑等常用加工方法成型，又可用过氧化物进行化学交联，用橡胶加工方法制成弹性体材料。
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英文: Metallocene branched polyethylenes prepared by oligomerization catalysts at different ratio vary in physical properties, and the ratio of cocatalyst to oligomerization catalyst of 8.72:1 gives good physical properties and processing properties.
中文: 以不同配比齐聚－共聚催化剂聚合的茂金属支化聚乙烯的基本物性不同，当共聚／齐聚催化剂配比为8.72:1时，基本性能和加工性能较好。
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英文: Synthesis of Novel Non-Bridged Metallocene Catalysts and Study on Olefin Polymerization
中文: 新型非桥联茂金属催化剂的合成及其烯烃聚合研究
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