Olefin polymerization catalyst
AssigneeStandard Oil Company (Indiana)
InventorDavid E. Boone
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Abstract
A high activity catalyst component, useful in polymerizing ethylene and mixtures of ethylene and terminal olefins having eight or fewer carbon atoms, is prepared by reacting a Group II metal hydroxide with antimony pentachloride followed by reactions with a Group IVB or VB transition metal compound and an aluminum halide.
Claims10
A supported alpha-olefin polymerization catalyst component formed by (A) reacting magnesium hydroxide with antimony pentachloride in a molar ratio of about 10:1 to about 1:5 for about 5 to about 100 hours at about 20.degree. to 130.degree. C. and (B) reacting the resulting product (1) with a Group IVB or VB transition metal compound for about 1 to 100 hours at about 20.degree. to 130.degree. C., the molar ratio of said transition metal compound to said Group II metal compound being about 1:30 to about 5:1, and (2) with an aluminum trihalide selected from the group consisting of aluminum trichloride or aluminum tribromide for about 3 to 100 hours at about 20.degree. to 130.degree. C., the molar ratio of said aluminum trihalide to said magnesium hydroxide being about 1:10 to about 10:1.
A supported alpha-olefin polymerization catalyst component formed by (A) reacting a Group II metal compound selected from the group consisting of magnesium hydroxide, magnesium oxide and calcium oxide with antimony pentachloride in a molar ratio of about 10:1 to about 1:5 for about 5 to about 100 hours at about 20.degree. to 130.degree. C. and (B) reacting the resulting product (1) with a Group IVB or VB transition metal compound for about 1 to 100 hours at about 20.degree. to 130.degree. C., the molar ratio of said transition metal compound to said Group II metal compound being about 1:30 to about 5:1, and (2) with an aluminum trihalide selected from the group consisting of aluminum trichloride or aluminum tribromide for about 3 to 100 hours at about 20.degree. to 130.degree. C., the molar ratio of said aluminum trihalide to said Group II compound being about 1:10 to about 10:1, wherein the transition metal compound is reacted before the aluminum trihalide.
Dependencies are inferred from the claim text.