LLDPE prepared by in situ polymerization using a dual-functional catalytic system of Ti(On-Bu)_4 /AlEt_3-Et(Ind)_2-ZrCl_2/MAO  

作　　者：LIU Zhongyang, XU Demin, GUO Cunyue, WANG Jun, HE Dawei & HU YouliangStale Key Lab of Engineering Plastics, Center for Molecular Science, Institute of Chemistry. Chinese Academy of Sciences, Beijing 100080, China Beijing Lab of Catalysis. China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, China 

出　　处：《Chinese Science Bulletin》2001年第24期2051-2054,共4页

基　　金：This work was supported by the National Natural Science Foundation of China and China Petrochemical Corporation (Grant No. 29734141).

摘　　要：Linear low-density polyethylene (LLDPE) was prepared by in situ polymerization using a dual-functional catalytic system containing Et(Ind)2ZrCl2/MAO and Ti(On-Bu)4 /AlEt3 used as co-polymerization catalyst and dimeriza-tion catalyst, respectively. The catalytic system showed high activity and the polymer with low melting point, narrow molecular weight distribution (MWD) and low crystallinity was produced.Linear low-density polyethylene (LLDPE) was prepared by in situ polymerization using a dual-functional catalytic system containing Et(Ind)2ZrCl2/MAO and Ti(On-Bu)4 /AlEt3 used as co-polymerization catalyst and dimeriza-tion catalyst, respectively. The catalytic system showed high activity and the polymer with low melting point, narrow molecular weight distribution (MWD) and low crystallinity was produced.

关 键 词：linear LOW-DENSITY polyethylene (LLDPE) in SITU poly- merization metallocene. 

分 类 号：TQ325[化学工程—合成树脂塑料工业]