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US 5,182,245 AGranted
Olefin polymerization and copolymerization catalyst
AssigneeAmoco Corporation
InventorsGregory G. Arzoumanidis, Christine Peaches
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Abstract
A catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins in the slurry phase is formed by a process comprising forming a solution of a magnesium-containing species in a liquid and precipitating solid particles from the solution of the magnesium-containing species by treatment with a transition metal halide in the presence of at least one of a tetrabutoxysilane and a tetrabutoxytitanate.
Claims21
A solid, hydrocarbon-insoluble catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins in the slurry phase, comprising a product formed by:
- A. forming a solution of a magnesium-containing species in a liquid, wherein the magnesium-containing species is formed by reacting a magnesium-containing compound with carbon dioxide or sulfur dioxide;
- B. precipitating solid particles from the solution of the magnesium-containing species by treatment with a transition metal halide in the presence of at least one of a tetrabutoxysilane and a tetrabutoxytitanate;
- and
- C. treating the precipitated particles with a transition metal compound and an electron donor.
1 more element
Dependencies are inferred from the claim text.