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US 6,887,817 B2Granted
Olefin polymerization catalyst and process for preparing polyolefins using said catalyst
AssigneeFormosa Plastics Corporation, U.S.A.
InventorsBing Lu, Honglan Lu, Chih-Jian Chen
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Abstract
An olefin polymerization catalyst is described which includes: (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor and a titanium compound, and (B) an organoaluminum compound. The present invention is also directed to a process for preparing polyolefins using the aforesaid catalyst system to polymerize olefins.
Claims18
An olefin polymerization catalyst, having a solid catalyst component and an organoaluminum compound, comprising:
- (A) a solid catalyst component being prepared by copulverizing a magnesium compound, said magnesium compound being represented by the general formula Mg(OR)2-nXn wherein R is an alkyl radical containing up to 12 carbon atoms, 1≦n≦2 and X is a halogen atom;
- an aluminum compound, said aluminum compound being represented by the general formula Al(OR′)3 wherein R′ is an alkyl radical containing up to 12 carbon atoms or an aryl group;
- an electron donor from organic compounds which contain at least one atom selected from oxygen, silicon, nitrogen, sulfur and phosphorus atoms, and a titanium compound;
- and
- (B) an organoaluminum compound.
2 more elements
Dependencies are inferred from the claim text.