Patents by Inventor Richard E. Dietz
Richard E. Dietz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4719271Abstract: A catalyst, a process of forming the catalyst, and polymerizing at least one alpha-olefin with the catalyst, said catalyst produced by precipitating a composition from a solution of a metal halide, for example, magnesium dihalide, and a transition metal compound, for example, titanium tetraalkoxide, in the presence of a particulate diluent, for example, polymeric fibrils, with an agent selected from among specified organometallic compounds, metal halides and oxygen-containing metal halides, hydrogen halides and organic acid halides. The composition is preferably further treated with a halide ion exchanging source, for example, titanium tetrahalide to form a particularly active catalyst. The catalyst is preferably used in combination with a cocatalyst comprising a metal hydride of organometallic compound selected from an element of Periodic Groups IA, IIA and IIIA.Type: GrantFiled: September 9, 1983Date of Patent: January 12, 1988Assignee: Phillips Petroleum CompanyInventor: Richard E. Dietz
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Patent number: 4618595Abstract: A catalyst, a process of forming the catalyst, and polymerizing at least one alpha-olefin with the catalyst, said catalyst produced by precipitating a composition from a solution of a metal halide, for example, magnesium dihalide, and a transition metal compound, for example, titanium tetraalkoxide, in the presence of a particulate diluent, for example, polymeric fibrils, with an agent selected from among specified organometallic compounds, metal halides and oxygen-containing metal halides, hydrogen halides and organic acid halides. The composition is preferably further treated with a halide ion exchanging source, for example, titanium tetrahalide to form a particularly active catalyst. The catalyst is preferably used in combination with a cocatalyst comprising a metal hydride or organometallic compound selected from an element of Periodic Groups IA, IIA and IIIA.Type: GrantFiled: June 5, 1985Date of Patent: October 21, 1986Assignee: Phillips Petrolem CompanyInventor: Richard E. Dietz
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Patent number: 4532272Abstract: An additive comprising at least one parting agent is added to a particle form evaporator to reduce the buildup of polymer on the walls and rotor of the agitated bed of the particle form evaporator. In an alternate embodiment, the additive employed further comprises at least one filler.Type: GrantFiled: June 28, 1984Date of Patent: July 30, 1985Assignee: Phillips Petroleum CompanyInventors: Mason S. Wilt, Richard E. Dietz
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Patent number: 4472523Abstract: Olefins such as ethylene can be polymerized in high productivities using a catalyst system wherein one catalyst component comprises a precipitated complex of zirconium tetrahydrocarbyloxide and/or titanium tetrahydrocarbyloxide and dihydrocarbylmagnesium. The productivity of the preferred catalyst containing both zirconium and titanium has been found to be substantially higher than the productivity of those catalysts obtained from either only Zr(OR').sub.4 or only Ti(OR").sub.4 and second catalyst component comprises at least one organometallic compound of a metal selected from the Groups I-III of the Mendeleev Periodic Table.Type: GrantFiled: April 18, 1983Date of Patent: September 18, 1984Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz
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Patent number: 4461882Abstract: Catalysts effective for the polymerization of olefins at high productivity formed upon mixing (1) a solution of a titanium tetrahydrocarbyloxide or a zirconium tetrahydrocarbyloxide and an organoaluminum halide with (2) a dihydrocarbylmagnesium compound alone or admixed with a minor amount of a trialkylaluminum and (3) combining the product obtained in (2) with a metal halide selected from a silicon tetrahalide and a titanium tetrahalide. The catalyst component thus produced can be combined with an organoaluminum compound as a cocatalyst component.Type: GrantFiled: September 30, 1982Date of Patent: July 24, 1984Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Richard E. Dietz, Charles E. Capshew, Joel L. Martin
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Patent number: 4410671Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is mixed with a precipitating agent to form an active olefin polymerization catalyst. The catalyst can be further treated with a halide ion exchanging source to form an active olefin polymerization catalyst. Prepolymer is deposited on the catalyst(s) in an amount effective to reduce polymer fines when the catalyst(s) are used in polymerization processes.Type: GrantFiled: February 22, 1982Date of Patent: October 18, 1983Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz, Charles E. Capshew
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Patent number: 4410451Abstract: A high surface area catalyst component or support is produced by swelling a magnesium halide, e.g., MgCl.sub.2, with a secondary or tertiary alcohol, adding a hydrocarbon diluent, and removing some or substantially all of the free or unreacted alcohol. In one preferred embodiment, the alcoholate product is contacted with a halogenated tetravalent titanium compound, e.g., TiCl.sub.4, to form a first catalyst component (A) which can be combined with a cocatalyst component (B) comprising a metallic hydride or an organometallic compound, e.g., an organoaluminum compound to form a catalyst system active for olefin polymerization.Type: GrantFiled: December 9, 1981Date of Patent: October 18, 1983Assignee: Phillips Petroleum CompanyInventors: Richard E. Dietz, Melvin B. Welch
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Patent number: 4406818Abstract: Catalysts effective for the polymerization of olefins at high productivity formed upon mixing (1) a solution of titanium tetrahydrocarbyloxide or a zirconium tetrahydrocarbyloxide and an organoaluminum halide with (2) a dihydrocarbylmagnesium compound alone or admixed with a minor amount of a trialkylaluminum and (3) combining the product obtained in (2) with a metal halide selected from a silicon tetrahalide and a titanium tetrahalide. The catalyst component thus produced can be combined with an organoaluminum compound as a cocatalyst component.Type: GrantFiled: January 28, 1982Date of Patent: September 27, 1983Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, M. Bruce Welch, Richard E. Dietz, Charles E. Capshew
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Patent number: 4405769Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is rapidly mixed with a precipitating agent to form an active olefin polymerization catalyst.Type: GrantFiled: February 22, 1982Date of Patent: September 20, 1983Inventors: Charles E. Capshew, James N. Short, M. Bruce Welch, Richard E. Dietz
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Patent number: 4396747Abstract: Olefins such as ethylene can be polymerized in high productivities using a catalyst system wherein one catalyst component comprises a precipitated complex of zirconium tetrahydrocarbyloxide and/or titanium tetrahydrocarbyloxide and dihydrocarbylmagnesium. The productivity of the preferred catalyst containing both zirconium and titanium has been found to be substantially higher than the productivity of those catalysts obtained from either only Zr(OR').sub.4 or only Ti(OR").sub.4 and second catalyst component comprises at least one organometallic compound of a metal selected from the Groups I-III of the Mendeleev Periodic Table.Type: GrantFiled: May 22, 1981Date of Patent: August 2, 1983Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz
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Patent number: 4362648Abstract: A catalyst composition can be obtained by gently milling a milled mixture of magnesium chloride and a titanium tetrahalide with a magnesium alkoxide. The catalyst composition can be combined with a metallic hydride or, preferably, an organometallic co-catalyst, e.g., an organoaluminum compound, to form a catalyst useful for the polymerization of alpha-olefins.Type: GrantFiled: December 4, 1980Date of Patent: December 7, 1982Assignee: Phillips Petroleum CompanyInventors: Richard E. Dietz, Oscar D. Nowlin
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Patent number: 4347161Abstract: A catalyst composition can be obtained by treating a magnesium halide-tetravalent, halogenated titanium compound mixture with a magnesium alkoxide. The catalyst composition can be combined with a metallic hydride or, preferably, an organometallic co-catalyst, e.g., an organoaluminum compound, to form a catalyst useful for the polymerization of alpha-olefins.Type: GrantFiled: August 7, 1980Date of Patent: August 31, 1982Assignee: Phillips Petroleum CompanyInventors: Richard E. Dietz, Max P. McDaniel
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Patent number: 4331558Abstract: Alpha-olefins are polymerized employing a catalyst which forms on mixing a catalyst component A formed by milling together a magnesium halide or manganous halide with selected catalyst adjuvants comprising aryl carbonic acid esters followed by treatment of the resulting milled product with a halogenated tetravalent titanium compound and combining the product thus formed with a cocatalyst component B comprising at least one of an organoaluminum compound and an organoaluminum monohalide with or without an aromatic ester as a part of the cocatalyst system.Type: GrantFiled: October 16, 1980Date of Patent: May 25, 1982Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz
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Patent number: 4331791Abstract: Active polymerization catalyst is deactivated using a high molecular weight epoxide.Type: GrantFiled: August 15, 1980Date of Patent: May 25, 1982Assignee: Phillips Petroleum CompanyInventors: Raymond G. Rohlfing, Melvin B. Welch, Richard E. Dietz
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Patent number: 4326988Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is mixed with a precipitating agent to form an active olefin polymerization catalyst. The catalyst can be further treated with a halide ion exchanging source to form an active olefin polymerization catalyst. Prepolymer is deposited on the catalyst(s) in an amount effective to reduce polymer fines when the catalyst(s) are used in polymerization processes.Type: GrantFiled: August 12, 1980Date of Patent: April 27, 1982Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz, Charles E. Capshew
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Patent number: 4325837Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is rapidly mixed with a precipitating agent to form an active olefin polymerization catalyst under an olefin atmosphere and prepolymer is formed on said catalyst to yield a catalyst capable of producing low fines content polymer.Type: GrantFiled: August 12, 1980Date of Patent: April 20, 1982Assignee: Phillips Petroleum CompanyInventors: Charles E. Capshew, James N. Short, M. Bruce Welch, Richard E. Dietz
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Patent number: 4316818Abstract: An active olefin polymerization catalyst is produced by halogenating magnesium oxide, contacting the halogenated magnesium oxide product with an alcohol, and treating the product thus produced with a titanium tetrahalide to obtain the catalyst. The catalyst can be combined with a cocatalyst component comprising a metallic hydride or an organometallic compound, e.g., an organoaluminum compound, in the polymerization process.Type: GrantFiled: October 6, 1980Date of Patent: February 23, 1982Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz
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Patent number: 4312968Abstract: A process for polymerizing alpha-olefins in the presence of a catalyst comprising two components. Component A is obtained by mixing a milled mixture of magnesium and particulate inorganic solid with an alcohol and then contacting the resultant product with a tetravalent halogenated titanium compound. Component B comprises a metallic hydride or an organometallic compound, e.g., an organoaluminum compound.Type: GrantFiled: June 16, 1980Date of Patent: January 26, 1982Assignee: Phillips Petroleum Co.Inventor: Richard E. Dietz
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Patent number: 4243552Abstract: Alpha-olefins are polymerized employing a catalyst which forms on mixing a catalyst component A formed by milling together a magnesium halide or manganous halide with selected catalyst adjuvants followed by treatment of the resulting milled product with a halogenated tetravalent titanium compound and combining the product thus formed with a cocatalyst component B comprising at least one of an organoaluminum compound and an organoaluminum monohalide with or without an aromatic ester as a part of the cocatalyst system.Type: GrantFiled: December 11, 1978Date of Patent: January 6, 1981Assignee: Phillips Petroleum CompanyInventors: Melvin B. Welch, Richard E. Dietz
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Patent number: 4240929Abstract: A catalyst composition can be obtained by treating a magnesium halide-tetravalent, halogenated titanium compound mixture with a magnesium alkoxide. The catalyst composition can be combined with a metallic hydride or, preferably, an organometallic co-catalyst, e.g., an organoaluminum compound, to form a catalyst useful for the polymerization of alpha-olefins.Type: GrantFiled: January 15, 1979Date of Patent: December 23, 1980Assignee: Phillips Petroleum CompanyInventors: Richard E. Dietz, Oscar D. Nowlin