Titanium (II) or zirconium (II) complexes and addition polymerization catalysts therefrom

摘要

Novel catalytic derivatives of titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, +529 -bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure and an activating cocatalyst are useful as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.