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一、导言 1954年Natta用Al(C_2H_5)_3-TiCl_3催化剂制得了全同结晶的聚丙烯之后,就开始用Ziegler型催化剂研究乙烯-丙烯及乙烯同α-烯烃的共聚合。到1957首次取得实验室成果,并发表了用Al(C_6H_(13))_3-VOCl_3所制得的乙-丙共聚物及其鑑定方法。此后,Natta等又发表了一系列的论文,论述了合成乙-丙弹性体的各种催化系统、共聚反应动力学、共聚物的硫化和弹性性能、乙-丙硫化胶的物理机械性能等。最近又发表了乙烯-丙烯-二烯烃三组分共聚物的硫化方法和性能。1961 Bier在广阔的组成(单体)范围內研究乙-丙共聚合,获得了可以作为塑料、薄膜、弹性体和能够处理纸张的可溶性共聚物;报导了乙-丙嵌段共聚物的制备方法和性能。Lukach,Kelly等又发
I. INTRODUCTION After Natta made the isotactic polypropylene with Al (C_2H_5) _3-TiCl_3 catalyst in 1954, Ziegler catalyst was used to study the copolymerization of ethylene and propylene with ethylene and α-olefin. By 1957, for the first time, the laboratory achievements were obtained and the ethylene-propylene copolymer prepared with Al (C_6H_ (13)) _3-VOCl_3 and its identification method were published. Since then, Natta et al. Have published a series of papers on various catalytic systems, copolymerization kinetics, vulcanization and elastic properties of copolymers, and physical and mechanical properties of ethylene-propylene-propylene vulcanizates. Recently, the vulcanization process and properties of ethylene-propylene-diene three-component copolymers have also been published. 1961 Bier studied ethylene-propylene copolymerization over a wide range of compositional (monomers) to obtain soluble copolymers that could be used as plastics, films, elastomers and papers capable of handling paper. The preparation of B-block copolymers was reported And performance. Lukach, Kelly and so on again