Olefin polymerization catalyst and process for preparing polyolefins with 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.
Claims20
An olefin polymerization catalyst, comprising:
- (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, 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.
A catalyst according to claim 15 wherein said titanium compound is selected from the group consisting of titanium tetrachloride, titanium tetraethoxide, diethoxytitanium dichloride, titanium tetrabutoxide, and ethoxytitanium trichloride.
A process for polymerization of olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-methyl 1-pentene, 4-methyl-1-heptene, 5-methyl-1-heptene, 6-methyl-1-heptene, and 4,4-dimenthyl-1-hexene, which comprises:
- reacting at least one of said olefins at elevated temperature in the presence of a catalyst, said catalyst being
- (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor selected 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.
Dependencies are inferred from the claim text.