POLYMERIZATION CATALYST SYSTEMS, THEIR PRODUCTION AND USE

摘要

This invention is generallly directed toward a supported catalyst system useful for polymerizing olefins. The method for forming the catalyst system of the invention provides for combining a monocyclopentadienyl bulky ligand transition metal catalyst system with a separately supported organometallic compound. A preferred method provides for supporting the catalyst system on a carrier and contacting such supported system with a separately supported organometallic compound. The bulky ligand transition metal compound used in the catalyst system of the invention can be a metallocene. The ionic metallocene catalyst systems of the invention have unexpectedly high activity as compared to the catalyst systems previously described. In one embodiment of the present invention the supported catalyst is a monocylcopentadienyl transition metal metallocene compound and an ionic activator. Thus, the supported catalyst system of the present invention is broadly defined as a catalyst system which comprises a carrier, a monocyclopentadienyl bridged heteroatom transition metal containing compound, an ionic activator and a supported organometallic compound.