作者: John C. Chadwick , Rubin Huang , Nileshkumar Kukalyekar , Sanjay Rastogi
关键词: Ethylene polymerization 、 Catalysis 、 Magnesium 、 Nickel 、 Polymer chemistry 、 Diimine 、 Transition metal 、 Polyethylene 、 Stereochemistry 、 Chemistry 、 Catalyst support
摘要: Immobilization of combinations early- and late-transition metal catalysts on MgCl 2 supports has led to significant increases in catalyst activity when a nickel diimine is incorporated into Fe-, Cr- or Ti-based system, the formation intimately mixed, bimodal blends high- low-molecular weight polyethylene via coimmobilization Cr Fe catalysts.