AN AMIDO TRANSITION METAL COMPOUND AND A CATALYST SYSTEM FOR THE PRODUCTION OF ISOTACTIC POLYPROPYLENE

摘要

Certain bridged and unbridged amido transition metal compounds of the Group IV-B metals are disclosed. These compounds may be used in a catalyst system comprising the amido transition metal compound and an alumoxane. Also disclosed is a process using the catalyst system for the production of high molecular weight polyolefins and, particularly, high molecular weight isotactic polypropylene.