Patent ID: 6818585
Filing Date: 2004-11-16
Classification: C08F,Y10S

Abstract:
A catalyst system for polymerizing ethylene alone or in combination with one or more olefin(s), comprising a cyclic germanium bridged bulky ligand metallocene-type catalyst compound and an activator, where the cyclic germanium bridged bulky ligand metallocene-type catalyst compound is selected from one of the group consisting of cyclotrimethylenegermyl(tetramethyl cyclopentadienyl) (cyclopentadienyl)zirconium dichioride, cyclotetramethylenegermyl(tetramethyl cyclopentadienyl) (cyclopentadienyl)zirconium dichioride, cyclotrimethylenegermyl(tetramethyl cyclopentadienyl) (2-methyl indenyl)zirconium dichloride, cyclotrimethylenegermyl(tetramethyl cyclopentadienyl) (3-methyl cyclopentadienyl)zirconium dichloride, cyclotrimethylonegermyl(tetramethyl cyclopentadienyl) (2,3,5-trimethyl cyclopentadienyl)zirconium dicliloride, cyclotrimethylenegermyl bis(tetra methyl cyclopentadienyl)zirconium dichioride, cyclotetramethylenegermyl(tetramethyl cyclopentadienyl) (3-methyl cyclopentadienyl)zirconium dichioride, cyclotetramethylenegermyl bis(tetra methyl cyclopentadienyl)zirconium dichloride, 3,4-dimethylcyclotetra-methyl-3-enegermyl(tetramethyl cyclopentadienyl) (cyclopentadienyl)zirconium dichioride, 3,4-dimethylcyclotetramethyl-3-enegermylbis(tetramethyl cyclopentadienyl)zirconium dichloride, 3,4-dimethylcyclotetramethyl-3-enegermyl(tetramethyl cyclopentadienyl) (2,3,5-trimethyl cyclopentadienyl)zirconium dichloride, 3-methylcyclotetramethyl-3-enegermyl bis(tetra methyl cyclopentadienyl)zirconium dichioride, 3-methylcyclotetramethyl-3-enegermyl (tetra methyl cyclopentadienyl) (cyclopentadienyl)zirconium dichloride, 3-methylcyclotetramethyl-3-enegermyl(tetra methyl cyclopentadienyl) (3-methylcyclopentadienyl)zirconium dichioride, o-xylidenegermyl bis(tetra methyl cyclopentadienyl)zirconium dichioride, o-xylidenegermyl(tetramnethyl cyclopentadienyl) (cyclopentadienyl)zirconium dichioride, and o-xylidenegermyl(tetramethyl cyclopentadienyl) (3-methylcyclopentadienyl)zirconium dichloride.