COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE USING Et(Ind)_2ZrCl_2/MAO CATALYST  

作　　者：姚晖 肖士镜 陆宏兰 

机构地区：[1]Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Chinese Journal of Polymer Science》1998年第1期32-37,共6页高分子科学（英文版）

摘　　要：Copolymerization of ethylene/1-octene was carried out in toluene withvarious concentrations of comonomer in the feed using Et(Ind)_2ZrCl_2/MAO (methyl alu-minoxane) as catalyst. It was found that with the increase of 1-octene concentration in thefeed the content of 1-octene in the copolymer increases, while the density, melting point,crystallinity and intrinsic viscosity of copolymer decrease. A copolymer with very lowdensity, containing 11.5 mol% of 1-octene (VLLDPE) can be produced with this catalystsystem. The effect of temperature and zirconium aluminum mole ratio of the catalyst onthe copolymerization was also investigated. The results of ^(13)C NMR determination of thecopolymer showed that the 1-octene units in the copolymer are principally isolated.Copolymerization of ethylene/1-octene was carried out in toluene withvarious concentrations of comonomer in the feed using Et(Ind)_2ZrCl_2/MAO (methyl alu-minoxane) as catalyst. It was found that with the increase of 1-octene concentration in thefeed the content of 1-octene in the copolymer increases, while the density, melting point,crystallinity and intrinsic viscosity of copolymer decrease. A copolymer with very lowdensity, containing 11.5 mol% of 1-octene (VLLDPE) can be produced with this catalystsystem. The effect of temperature and zirconium aluminum mole ratio of the catalyst onthe copolymerization was also investigated. The results of ^(13)C NMR determination of thecopolymer showed that the 1-octene units in the copolymer are principally isolated.

关 键 词：COPOLYMERIZATION ETHYLENE 1-OCTENE METHYLALUMINOXANE Et(Ind)_2ZrCl_2 

分 类 号：O631.5[理学—高分子化学]