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US 4,400,303 AGranted
Catalyst for olefin polymerization
AssigneePhillips Petroleum Company
InventorJoel L. Martin
Life of this patent
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Abstract
A process for polymerizing ethylene using a catalyst component prepared by pretreating a magnesium dihalide with selected organic oxy compounds and then reacting the pretreated magnesium dihalide with a halogenated titanium compound.
Claims14
A catalyst for the polymerization of monomers comprising ethylene comprising the product produced by
- (1) pretreating solid particles of magnesium dihalide by pulverizing said particles in the presence of at least one oxy compound of the formula
- RR'C(OR").sub.2
- wherein R is selected from hydrogen, alkyl radicals having 1 to 4 carbon atoms, and halogenated alkyl radicals having 1 to 4 carbon atoms;
- wherein R' is selected from hydrogen, alkyl radicals containing 1 to 4 carbon atoms, halogenated alkyl radicals containing 1 to 4 carbon atoms, and OR";
- wherein each R" is individually selected from alkyl radicals having 1 to 4 carbon atoms;
- and then
- (2) reacting said pretreated solid particles with a halogenated titanium compound of the formula TiX.sub.n (OR"').sub.4-n wherein R"' is a hydrocarbyl radical containing 1 to 12 carbon atoms, X is a halogen, and n is an integer of 1 to 4.
4 more elements
Dependencies are inferred from the claim text.