POLYMERIZATION CATALYST SYSTEMS, THEIR PRODUCTION AND USE

• Main Authors: HLATKY, GREGORY GEORGE, JEJELOWO, MOSES OLUKAYODE
• Format: Patent
• Language: English; French
• Published: 31.01.2006
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

This invention is generallly directed toward a supported catalyst system use ful for polymerizing olefins. The method for forming the catalyst system of the invention provides for combining a monocyclopenta dienyl bulky ligand transition metal catalyst system wit h a separately supported organometallic compound. A preferred method provides fo r supporting the catalyst system on a carrier and contac ting such supported system with a separately supported organometallic compound. T he 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 hig h activity as compared to the catalyst systems previously described. In one em bodiment of the present invention the supported catalyst is a monocyclopentadienyl transition metal metallocene compound and an ionic acti vator. Thus, the supported catalyst system of the presen t invention is broadly defined as a catalyst system which comprises a carrier, a monocyclopentadienyl bridged heteroatom transition me tal containing compound, an ionic activator and a supported organometallic compo und.