| abstract |
Ionically activated metallocene catalyst compositions which are useful in the polymerization of olefins comprise transition metal cationic components associated with and stabilized by a polyanionic moleties constituted of non-coordinating anionic groups chemically bonded to core components. The transition metal cationic components typically are cyclopentadienyl-group containing Group 4, 5, and 6 metal compounds having a hydrolyzable ligand such that they react with the activator compounds so as to form the cationic components in non-coordinating association with bulky, labile anions derived from the activator compound which in turn is chemically bound to the core component, such as a polymeric or metal oxide support. |