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AssigneeFormosa Plastics Corporation, U.S.A.
InventorsLei Zhang, Gapgoung Kong, Chih-Jian Chen, Demin Xu, Yiqun Fang, Guangxue Xu
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A phthalate-free catalyst component for olefin polymerization comprising titanium, magnesium, a halogen, diether, and oxalic acid diamides represented by the following formula (I): and an olefin polymerization catalyst system consisting of the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. The present catalyst compositions improve diether-based catalyst selectivity while maintaining excellent catalyst activity and hydrogen response. An olefin polymer that has a moderate molecular weight distribution while maintaining higher stereoregularity (isotacticity) over diether-based catalyst, and better than or equal to phthalate-based catalyst can be produced by utilizing the inventive catalyst component.
A solid catalyst component for the polymerization or co-polymerization of alpha-olefins comprising a solid Ziegler Natta type catalyst component comprising one or more oxalic acid diamide compounds and one or more diether compounds.
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A catalyst system for the polymerization or co-polymerization of alpha-olefins comprising:
A method for polymerizing alpha-olefins, comprising:
Dependencies are inferred from the claim text.