Standard Oil Company (Indiana)

Peter Fotis

Glen R Hoff

Nicholas K Kildahl

John L Melquist

David E Boone

Catalyst for production of polyolefins of improved morphology comprises (A) organometallic promoter and (B) product obtained by contacting (1) at least one oxygenated compound of phosphorus with (2) catalytic complex comprising an intimate association of at least one reduced Group IVB-VB metal halide, at least one divalent metal halide and at least one aluminum compound. Oxygenated phosphorus compound is used in an amount effective to improve polymer morphology without substantial adverse effects on other catalytic properties.

Catalyst and process for production of polyolefins of improved morphology

Catalyst component comprising the reaction product of components comprising (1) at least one divalent metal halocarboxylate, (2) at least one oxygenated organic compound of a Group IVB or VB metal and (3) at least one organoaluminum component, provided that when (3) contains less than an effective amount of halogen such components further comprise (4) at least one halogenating agent other than a Group IVB--VIB metal halide. Also disclosed are catalysts comprising the above-described component and organometallic promoter and methods for preparation and use of the catalyst components and catalysts.

Catalyst for the polymerization of alpha-olefins

High activity alpha-olefin polymerization catalysts comprising an organometallic promoter and a component prepared from at least one compound of a Group IVB, VB, or VIB metal, at least one support material which is a divalent metal salt of a phosphorus acid ester having at least one phosphorous acid ester group bonded to metal through oxygen or sulfur, and at least one alkylaluminum halide.

High activity catalyst for the polymerization of alpha-olefins

Method for preparing metal salts of phosphorus acid esters comprising reacting metal salts of organic acids with phosphorus acid esters. By-product removal is facilitated such that high purity products are produced. Products are particularly useful as support materials in the preparation of highly active alpha-olefin polymerization catalyst components.

Method for the preparation of metal salts of phosphorus acid esters

Catalyst for the polymerization of alpha-olefins to polymers having broad molecular weight distributions consisting essentially of an organometallic promoter and the solid reaction product of an alkylaluminum component, at least one titanium(IV) compound, and at least one zirconium(IV) compound.

Catalyst for the preparation of polyalpha-olefins having broad molecular

Vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.

Vapor phase polymerization with temporarily inactive titanium catalyst

Polyethylene or ethylene copolymer containing up to about twenty percent of a C.sub.3 to C.sub.8 olefin can be made by using a solid catalyst component prepared from (1) a lower alkyl magnesium alkoxide or magnesium hydroxide, (2) a titanium-aluminum compound, and (3) a lower alkyl alkylaluminum dichloride. Said solid component can be used in conjunction with a trialkylaluminum promoter in a slurry or vapor phase polymerization process at moderate polymerization temperatures and pressures.

Ethylene polymerization catalyst

The particle size of as formed polyethylene or ethylene copolymer containing up to about fifteen percent of a C.sub.3 to C.sub.8 olefin, which is made using a promoted solid catalyst component prepared from a magnesium alkoxide, a titanium (IV) alkoxide and an alkylaluminum dichloride, is increased by adding the dichloride in at least two stages and allowing the preparation mixture to age between stages during the preparation of said catalyst component. The particle size of polymer can be increased substantially using the so treated catalyst component, compared to the particle size of polymer made using untreated catalyst component, when either catalyst component is employed together with an alkylaluminum compound promoter in a slurry or vapor phase process at moderate polymerization temperature and pressure.

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Highland, IN, United States of America

Peter Fotis