Effect of Active Site Density on Ethylene Polymerization by a Series of Side-Chain Functionalized Polynorbornene Supported Half-Metallocene Catalysts

摘要

Olefin polymerization catalysts can be broadly classified into homogeneous single-site and heterogeneous multi-site catalysts, respectively represented by metallocene and Ziegler-Natta catalysts. The former type exploits the advantage of precise active site design for superior activity and selectivity.