| 摘要 |
Disclosed is a catalyst system for the homopolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a Group 6b metal-alkali metal compound wherein said Group 6b metal is a cyclopentadienyl Group 6b metal trialkaryl complex anion in which the Group 6b metal has an oxidation state +3 and wherein said complex anion is balanced by an alkali metal cation such as lithium and wherein the alkali metal cation is, optionally, coordinately linked to a neutral hydrocarbyl based ligand containing a heteroatom such as oxygen, nitrogen, phosphorus or sulphur, said Group 6b metal-alkali metal compound being supported on an inorganic support. The catalyst system can contain, in addition, a Group 2 or Group 3 metal-alkyl compound. |
