The invention is a polymerization catalyst system derived from tethered, heteroatom-bridged monocyclopentadienyl transition metal compound precursor from Group 4 of the Periodic Table of the Elements. The catalyst system comprises an activated, tethered pair of Group 4 transition metal compounds having...http://www.google.ca/patents/US6455458?utm_source=gb-gplus-sharePatent US6455458 - Tethered monocyclopentadienyl polymerization catalysts
