Cyclopentadienylgruppe enthaltende Alpha-Olefin-Polymerisationskatalysatoren auf Basis von Chrom und Verfahren zur Polymerisation von Alpha-Olefinen

摘要

Disclosed is a selected catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal hydrocarbyl compound in which the metal has an oxidation state of +3, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound.