Ethylene polymerization with combinations of early-and late-transition metal catalysts immobilized on MgCl2 supports

Abstract

Immobilization of combinations of early- and late-transition metal catalysts on MgCl2 supports has led to significant increases in catalyst activity when a nickel diimine is incorporated into a Fe-, Cr- or Ti-based catalyst system, and to the formation of intimately mixed, bimodal blends of high- and low-molecular weight polyethylene via coimmobilization of Cr and Fe catalysts. Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.