BISCYCLOPENTADIENYL-DIENE COMPLEXES, PROCESS OF THEIR PREPARATION, COMPOSITIONS CONTAINING SUCH COMPLEXES BEING SUITABLE AS OLEFIN POLYMERIZATION CATALYSTS AND OLEFIN POLYMERIZATION PROCESS

摘要

Olefins are polymerized by the use of catalysts comprising biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes wherein the diene is bound to the transition metal either in the form of a sigma -complex or a pi -complex in combination with activating cocatalysts.