Phillips Petroleum Company

Phil M Stricklen

Max P McDaniel

Charles A Drake

Kenneth W Willcox

Francis X Mueller, Jr

Joyce K Snow

John P Hogan

Calvin E Moore

Patrick Rooney

Daniel M Hasenberg

Dennis G Glascock

A new polymer and copolymer composition comprising 3-ethyl-1-hexene is provided, This new polymer composition of 3-ethyl-1-hexene homopolymer has a crystalline melting point of about 425.degree. C. to about 435.degree. C. and is particularly useful for applications requiring high temperatures, This new polymer and copolymer composition is produced by utilizing a catalyst comprising at least one transition metal and at least one organometallic halide compound.

Polymers of 3 ethyl-1-hexene

A process to make a homopolymer wherein said homopolymer consists essentially of 3-ethyl-1-hexene, and wherein said homopolymer has a melting point in the range of about 425.degree. C. to about 435.degree..

Process to make homopolymers of 3-ethyl-1-hexene

A dicarbonyl compound and an alpha,beta-unsaturated ketone are used to deactivate a transition metal/organometal catalyst in polymerization of at least one monomer to form a 1-olefin polymer. The polymer is deashed with a lower alcohol optionally followed by a wash with the starting monomer or n-heptane.

Deashing process for polyolefins using an alpha,beta-unsaturated ketone

A process for preparing polymers of 1-olefins and a catalyst for such process are provided. The catalyst is comprised of a solid titanium halide-containing compound and an alkylaluminum hydride.

Process for polymerizing 1-olefins and catalyst therefor

Prepolymer-containing catalysts compositions and processes for making and using such catalysts are disclosed. These catalysts compositions are particularly useful for polymerizing 4-methyl-1-pentene to poly(4-methyl-1-pentene) and to improve the optical properties of polyolefins.

Catalysts containing poly(3-ethyl-1-hexene) and uses thereof

In the copolymerization of 4-methyl-1-pentene and at least one alpha olefin under batch polymerization conditions at a temperature of at least about 50.degree. C. wherein 4-methyl-1-pentene is initially polymerized in the absence of comonomer and then comonomer is added to the reaction vessel to permit copolymer formation, the improvement comprising initially forming 4-methyl-1-pentene homopolymer in an amount sufficient to reduce the solubility of the later formed copolymer at the polymerization temperature, said homopolymer being no more than about 5 weight percent of the end product copolymer. Also the products of such polymerizations are disclosed.

Process for the copolymerization of 4-methyl-1-pentene

Prepolymer-containing catalysts compositions and processes for making and using such catalyst are disclosed. These catalysts compositions are particularly useful for polymerizing 4-methyl-1-pentene to poly(4-methyl-1-pentene) and to improve the optical properties of polyolefins.

A process for producing a polyolefin having a multimodal molecular weight distribution wherein the polymerization is conducted in the presence of hydrogen and a catalyst system containing aluminoxane and at least two different metallocenes each having different olefin polymerization termination rate constants in the presence of hydrogen, and the process of producing the catalyst system.

Process for producing polyolefins and polyolefin catalysts

A silica composition is calcined at a temperature high enough to remove some but not all of the hydroxyl content. Generally temperatures of at least 400.degree. C. are required and temperatures above 1000.degree. C. are undesirable, the most preferred temperature being about 600.degree.-800.degree. C. The thus calcined silica is then treated with chromyl chloride at an elevated temperature and finally given a treatment in a carbon monoxide ambient. While the final composition contains chlorine which is normally considered a catalyst poison, the material is surprisingly active as an olefin polymerization catalyst.

Polymerization with CO reduced chromyl halide on silica catalyst

Co Reduced chromyl halide on silica catalyst

Small amounts of an aluminum alkyl or a dihydrocarbylmagnesium compound are used in slurry olefin polymerization employing a silica supported chromium catalyst in order to reduce the induction period and increase catalyst activity while having only a modest effect on polymer properties.

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Bartlesville, OK, United States of America

Phil M Stricklen