负载型钴二亚胺配合物-TiCl_4复合催化剂制备新型乙烯/1-丁烯共聚产物结构性能研究  

STUDIES ON STRUCTURE AND CHARACTERISTICS OF ETHYLENE/1-BUTENE COPOLYMERS PREPARED BY Co DIIMINE COMPLEX-TiCl_4 CATALYSTS

作　　者：胡锦民[1] 林少全[1] 王海华[1] 

机构地区：[1]中山大学高分子研究所,广州510275

出　　处：《高分子学报》2001年第4期437-440,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金及燕山石油化工研究院联合资助 (基金号 2 98740 3 9);广东省基金资助项目

摘　　要：合成了三种负载型二亚胺配体钴配合物 TiCl4复合催化剂 (CL1、CL2、CL3催化剂 ) .不用MAO ,以烷基铝为助催化剂 ,用它们催化乙烯 1 丁烯淤浆共聚合制备一系列塑性体和弹性体共聚物 .研究表明 ,复合催化剂性质受二亚胺配体性质影响 ,配体L1制备的复合催化剂具有低聚及原位共聚性能 ,可制得高支化度(36 0～ 6 1 5branchnumber 10 0 0C)低密度和极低密度 (0 885～ 0 910g cm3)塑性体和弹性体共聚物 .在 1 丁烯用量低于 5 %时 ,CL1催化剂制备的共聚产物中 1Three Co diimine complpx-TiCl4 catalysts for slurry copolymerization of ethylene and 1-butene with AIR(3) as cocatalyst in the absence of MAO were synthesized and were used to prepare high branching degree copolymers of ethylene with I-butene. It is found that properties of the catalysts are affected by the characteristics of diimine ligands. the results indicate that the complex catalyst prepared with Ll ligand exhibits the property of oligomerization and copolymerization in-situ. The copolymers prepared by CLI catalyst are plastics and elastomers, they show high branching degree (36.0 similar to 61.5 branch number/1000C) and low density (0.885 similar to 0.910 g/m(3)), when the I-butene content of feeding was below 10%, the 1-butene content in the copolymers is higher than that of feeding.

关 键 词：复合催化剂 共聚物 弹性体 乙烯 1-丁烯 四氯化钛 结构 性能 负载型钴二亚胺配合物 

分 类 号：O631[理学—高分子化学]