STERICALLY DEMANDING DIALKOXYDIALKYLSILANES AS EXTERNAL DONORS FOR ZIEGLER CATALYSTS FOR THE POLYMERIZATION OF PROPYLENE

摘要

A catalyst system useful for the polymerization of propylene is disclosed. The catalyst system may include a Ziegler-Natta catalyst, a co-catalyst, and at least one external electron donor comprising a dialkoxydialkylsilane with sterically demanding alkyl substituents.