| abstract |
A catalyst composition and method for its preparation. And a method for preparing a polymer by polymerizing an ethylenically unsaturated monomer including a non-polar olefin monomer, a polar olefin monomer and a combination thereof in the presence of a catalyst composition. A catalyst composition comprising at least one cationic metal-pair complex, the catalyst composition comprising a complex of a specific structure in which the metal atom of the pair has a through-space internuclear distance of at least 1.5 angstroms and less than 20 angstroms. And a polymer polymerized using the catalyst composition. [Selection figure] None |