Ethylene polymerization using metallocenes supported on MgCl2/SiCl4−n (n-C6H13O)n

Abstract

Abstract-Metallocene complexes Cp 2 TiCl 2 , Cp 2 ZrCl 2 , Cp 2 Zr(N n Bu 2 ) 2 , Cp 2 Ti(η 1 -OC(O)C 6 H 5 ) 2 and Cp 2 Zr(η 1 -OC(O)C 6 H 5 ) 2 were supported on MgCl 2 /SiCl 4−n (n-C 6 H 13 O) n carrier and used for ethylene polymerization. The supported complexes result in highly active catalysts when treated with different aluminum alkyl-based co-catalysts. These catalysts are able of tuning the final properties of the produced polyethylenes. Mixed composites of metallocenes and conventional Ziegler-Natta catalysts supported on the same carrier were also studied. A supported zirconocene Cp 2 Zr(η 1 -OC(O)C 6 H 5 ) 2 on MgCl 2 /SiCl 4−n (n-C 6 H 13 O) n resulted in a highly active catalyst that eject control on the molecular weight, crystallinity and morphology of the resultant polyethylene.