Patents Represented by Attorney, Agent or Law Firm Lynda S. Jolly
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Patent number: 6150295Abstract: Novel catalyst systems which comprise pyridine-2-carboxaldimine nickel complexes can be used with methylaluminoxane in slurry polymerization processes to polymerize mono-1-olefins and, optionally a higher alpha-olefin comonomer, to produce low molecular weight polymers.Type: GrantFiled: March 30, 1998Date of Patent: November 21, 2000Assignee: Phillips Petroleum CompanyInventor: Nancy W. Eilerts
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Patent number: 6037433Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer.Type: GrantFiled: November 13, 1998Date of Patent: March 14, 2000Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, Steven J. Secora, Elizabeth A. Benham, Max P. McDaniel, Eric Hsieh, Timothy W. Johnson
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Patent number: 6034186Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer.Type: GrantFiled: May 16, 1997Date of Patent: March 7, 2000Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, Steven J. Secora, Elizabeth A. Benham, Max P. McDaniel, Eric Hsieh, Timothy W. Johnson
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Patent number: 5932670Abstract: Novel catalyst systems which comprise 2-pyridine carboxaldimine nickel dihalide complexes can be used with an organoaluminum cocatalyst in slurry oligomerization or polymerization processes to oligomerize or polymerize mono-1-olefins and, optionally a higher alpha-olefin comonomer, to produce low molecular weight polymers or synthetic oils.Type: GrantFiled: March 30, 1998Date of Patent: August 3, 1999Assignee: Phillips Petroleum CompanyInventors: Alexander Koppl, Helmut G. Alt
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Patent number: 5919996Abstract: A process is provided to modify an olefin production catalyst system which comprises contacting an olefin production catalyst system with ethylene prior to use. A process also is provided to trimerize and/or oligomerize olefins with the novel, modified olefin catalyst production system. The modified olefin production catalyst system produces less solids, such as, for example, polymer.Type: GrantFiled: October 13, 1998Date of Patent: July 6, 1999Assignee: Phillips Petroleum CompanyInventors: Jeffrey W. Freeman, John L. Buster, Ronald D. Knudsen
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Patent number: 5866661Abstract: A process to control the heat transfer coefficient in slurry olefin polymerization processes comprising shocking the polymerization reactor is provided. This shock comprises quickly decreasing and then restoring to normal operating conditions, the higher alpha-olefin comonomer to ethylene monomer weight feed ratio.Type: GrantFiled: December 13, 1996Date of Patent: February 2, 1999Assignee: Phillips Petroleum CompanyInventors: Elizabeth A. Benham, Max P. McDaniel, John D. Stewart, Lonnie J. Dodson, Charles R. Nease
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Patent number: 5859303Abstract: A process is provided to trimerize or oligomerize olefins in the presence of an olefin oligomerization catalyst and a solvent which is a product of the olefin oligomerization process.Type: GrantFiled: December 18, 1995Date of Patent: January 12, 1999Assignee: Phillips Petroleum CompanyInventor: Mark E. Lashier
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Patent number: 5856257Abstract: A process is provided to modify an olefin production catalyst system which comprises contacting an olefin production catalyst system with ethylene prior to use. A process also is provided to trimerize and/or oligomerize olefins with the novel, modified olefin catalyst production system. The modified olefin production catalyst system produces less solids, such as, for example, polymer.Type: GrantFiled: May 16, 1997Date of Patent: January 5, 1999Assignee: Phillips Petroleum CompanyInventors: Jeffrey W. Freeman, John L. Buster, Ronald D. Knudsen
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Patent number: 5814575Abstract: Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support, with a metal alkyl and an unsaturated hydrocarbon, to trimerize, oligomerize, and/or polymerize olefins.Type: GrantFiled: June 7, 1995Date of Patent: September 29, 1998Assignee: Phillips Petroleum CompanyInventors: William K. Reagen, Ted M. Pettijohn, Jeffrey W. Freeman
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Patent number: 5786431Abstract: Novel chromium-containing compounds are prepared by forming a mixture of a chromium salt, a metal amide, and an ether. These novel chromium-containing, or chromium pyrrolide, compounds, with a metal alkyl and an unsaturated hydrocarbon, can be used as a cocatalyst system in the presence of an olefin polymerization catalyst system to produce a comonomer in-situ. The resultant polymer, although produced from predominately one monomer, has characteristics of a copolymer.Type: GrantFiled: June 7, 1995Date of Patent: July 28, 1998Assignee: Phillips Petroleum CompanyInventors: William K. Reagen, Ted M. Pettijohn, Jeffrey W. Freeman, Elizabeth A. Benham
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Patent number: 5763723Abstract: Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support, with a metal alkyl and an unsaturated hydrocarbon, to trimerize, oligomerize, and/or polymerize olefins.Type: GrantFiled: June 7, 1995Date of Patent: June 9, 1998Assignee: Phillips Petroleum CompanyInventors: William K. Reagen, Ted M. Pettijohn, Jeffrey W. Freeman
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Patent number: 5689028Abstract: A process is provided to inhibit trimerization catalyst system activity which comprises the sequential steps of contacting a reactor effluent stream with alcohol; removing any desired olefin products; adding an aqueous base to the non-olefin portion; removing a precipitate; separating the aqueous and organic phases; and adding an acid to the aqueous phase.Type: GrantFiled: December 18, 1995Date of Patent: November 18, 1997Assignee: Phillips Petroleum CompanyInventors: Mark E. Lashier, Jeffrey W. Freeman, Ronald D. Knudsen
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Patent number: 5648439Abstract: A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported chromium catalyst systems. The first catalyst system comprises a chromium oxide catalyst system which comprises chromium oxide supported on an inorganic oxide. The second catalyst system comprises a chromocene catalyst system which comprises chromocene supported on an inorganic oxide. The resultant, recovered polymer has a multimodal, or at least a bimodal, molecular weight distribution.Type: GrantFiled: July 14, 1995Date of Patent: July 15, 1997Assignee: Phillips Petroleum CompanyInventors: Joseph J. Bergmeister, Scott E. Kufeld, Max P. McDaniel
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Patent number: 5624877Abstract: A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported chromium catalyst systems. The first catalyst system comprises a chromium oxide catalyst system which comprises chromium oxide supported on an inorganic oxide. The second catalyst system comprises a chromocene catalyst system which comprises chromocene supported on an inorganic oxide. The resultant, recovered polymer has a multimodal, or at least a bimodal, molecular weight distribution.Type: GrantFiled: June 2, 1995Date of Patent: April 29, 1997Assignee: Phillips Petroleum CompanyInventors: Joseph J. Bergmeister, Scott E. Kufeld, Max P. McDaniel
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Patent number: 5563312Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: GrantFiled: May 19, 1995Date of Patent: October 8, 1996Assignee: Phillips Petroleum CompanyInventors: Ronald D. Knudsen, Jeffrey W. Freeman, Mark E. Lashier
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Patent number: 5543375Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: GrantFiled: February 18, 1994Date of Patent: August 6, 1996Assignee: Phillips Petroleum CompanyInventors: Mark E. Lashier, Jeffrey W. Freeman, Ronald D. Knudsen
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Patent number: 5543376Abstract: A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with dual site supported chromium polymerization catalyst systems. Such a polymerization catalyst system comprises an inorganic oxide supported chromium oxide catalyst system and a chromocene compound, wherein the supported catalyst system and chromocene compound are contacted in a polymerization reactor. The resultant, recovered polymer has at least a bimodal, or broad, molecular weight distribution.Type: GrantFiled: April 13, 1995Date of Patent: August 6, 1996Assignee: Phillips Petroleum CompanyInventor: Joseph J. Bergmeister
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Patent number: 5527867Abstract: A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with dual site supported chromium polymerization catalyst system. Such a polymerization catalyst system comprises an inorganic oxide supported chromium oxide catalyst system and a chromocene compound, wherein the supported catalyst system and chromocene compound are contacted in a polymerization reactor. The resultant, recovered polymer has at least a bimodal, or broad, molecular weight distribution.Type: GrantFiled: September 15, 1995Date of Patent: June 18, 1996Assignee: Phillips Petroleum CompanyInventor: Joseph J. Bergmeister
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Patent number: 5523507Abstract: Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support, with a metal alkyl and an unsaturated hydrocarbon, to trimerize, oligomerize, and/or polymerize olefins.Type: GrantFiled: July 29, 1994Date of Patent: June 4, 1996Assignee: Phillips Petroleum CompanyInventors: William K. Reagen, Ted M. Pettijohn, Jeffrey W. Freeman
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Patent number: 5470926Abstract: Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent:, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support to trimerize and/or polymerize olefins.Type: GrantFiled: November 19, 1993Date of Patent: November 28, 1995Assignee: Phillips Petroleum CompanyInventors: William K. Reagen, Brian K. Conroy