Patent ID: 6800704
Filing Date: 2004-10-05
Classification: C08F

Abstract:
An olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers under suitable polymerization conditions with a Group 3-6 metallocene catalyst compound comprising two &pgr; bonded rings covalently bridged to each other, said rings having one or more C3 or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent, said substituent bonded to the ring through a primary carbon atom, the total number of substituents on the rings is equal to a number from 3 to 10; wherein when the number of substituents is 3 or 4, said rings are asymmetrically substituted in that the number or type of ring substituents on the rings are different.