Research progress of metallocene catalysts for olefin polymerization
The application of six typical metallocene catalysts for high-temperature solution polymerization of ethylene and α-olefins is reviewed,including mainstream non bridged,bridged,restricted geometry,and pyridine amino types.The geometric structural parameters of four metallocene catalysts were analyzed to explore the intrinsic relationship between the microstructure of bridged metallocene catalysts and the activity of olefin polymerization,which reveals the direction of improvement of polymerization performance of catalysts by changing the coordination space of these catalysts.
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