Patents by Inventor Kenneth W. Willcox
Kenneth W. Willcox 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: 5378747Abstract: An ethylene polymer composition is provided that comprises:(a) bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, in an amount that is from about 0.0001 to less than 0.30 weight percent; and(b) at least one color stabilization compound selected from the group consisting of:(1) a carboxylic acid compound;(2) an alcohol compound; and(3) a hydroxycarboxylic acid compound;in an amount from about 0.0001 to about 1 weight percent;wherein said weight percents are based on the weight of said ethylene polymer composition.Type: GrantFiled: December 28, 1992Date of Patent: January 3, 1995Assignee: Phillips Petroleum CompanyInventors: Paritosh K. Das, Kenneth W. Willcox
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Patent number: 5308900Abstract: A polyethylene composition that resists changing color when subjected to ultraviolet light said polyethylene composition comprises:(a) bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, in an amount that is at least about 0.001 parts but less than 0.30 parts per 100 parts by weight of said polyethylene; and(b) zinc stearate, in an amount that is from about 0.1 part 1 part per 100 parts by weight, of said polyethylene.Type: GrantFiled: November 24, 1992Date of Patent: May 3, 1994Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 5270369Abstract: A composition comprising a polyolefin and a hydroxylamine is disclosed as having improved clarity and viscosity. In addition, a method of reducing the viscosity and improving the clarity of a polyolefin is disclosed, wherein the process comprises visbreaking the polyolefin in the presence of a hydroxylamine.Type: GrantFiled: October 21, 1992Date of Patent: December 14, 1993Assignee: Phillips Petroleum CompanyInventors: Kenneth W. Willcox, Francis X. Mueller, Jr.
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Patent number: 5238980Abstract: A stereoregular, branched-mono-lolefin polymer composition that has reduced corrosion tendencies is provided. This polymer composition comprises:(a) a stereoregular, branched-mono-1-olefin polymer;(b) tris(3,5-di-t-butyl-40hydroxybenzyl)isocyanurate;(c) poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-s-triazine-2,-4-diyl][(2,2,6,6-t etramethyl-4-piperidyl)imino]hexamethylene-[(2,2,6,6-tetramethyl-4-piperidy l)imino]]; and(d) a hydrocarbylsulfide.Type: GrantFiled: December 17, 1992Date of Patent: August 24, 1993Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 5194415Abstract: 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.Type: GrantFiled: December 12, 1991Date of Patent: March 16, 1993Assignee: Phillips Petroleum CompanyInventors: Phil M. Stricklen, Francis X. Mueller, Jr., Kenneth W. Willcox, Joyce K. Snow
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Patent number: 5194582Abstract: A process is provided comprising contacting under deodorizing conditions, at least one deodorizing composition with at least one poly(mono-1-olefin), wherein said deodorizing conditions comprise, a standard pressure from about 1 to about 5, and a standard temperature from about 0.5 to about 2.5.Type: GrantFiled: August 21, 1992Date of Patent: March 16, 1993Assignee: Phillips Petroleum CompanyInventors: Robert B. Eldridge, Francis X. Mueller, Jr., Ralph C. Farrar, Jr., Kenneth W. Willcox, Kiplin D. Cowan, David R. Battiste
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Patent number: 5115054Abstract: 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.Type: GrantFiled: October 12, 1990Date of Patent: May 19, 1992Assignee: Phillips Petroleum CompanyInventors: Phil M. Stricklen, Francis X. Mueller, Jr., Kenneth W. Willcox, Joyce K. Snow
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Patent number: 5110214Abstract: An apparatus and method for determining the propensity of a polymer to emit smoke by measuring the smoke emitted when the polymer is melted and extruded. The polymer is heated to a molten state and extruded under controlled time conditions into a receptacle from which gaseous samples can be collected, then the gaseous samples from the receptacle are analyzed for smoke content to determine the propensity of the polymer to emit smoke.Type: GrantFiled: July 9, 1990Date of Patent: May 5, 1992Assignee: Phillips Petroleum CompanyInventors: David R. Battiste, Kenneth W. Willcox, Tommy J. Morgan
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Patent number: 5066686Abstract: This invention relates to deodorizing odorous polyolefins. This is accomplished by mixing the odorous polyolefin with low concentration levels of an inorganic oxidant. Optionally, a fragrance is mixed with the odorous polyolefin mixture. Additionally, if desired, heat can be applied to the mixture.Type: GrantFiled: July 16, 1990Date of Patent: November 19, 1991Assignee: Phillips Petroleum CompanyInventors: Lawrence M. Fodor, Kenneth W. Willcox
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Patent number: 5066460Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: July 16, 1990Date of Patent: November 19, 1991Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 5000917Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol, diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: July 30, 1990Date of Patent: March 19, 1991Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4968736Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: August 23, 1988Date of Patent: November 6, 1990Inventor: Kenneth W. Willcox
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Patent number: 4793972Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates and/or poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-5-triazine-2,4-diyl][2,2,6,6-tet ramethyl-4-piperidyl)imino]hexamethylene[2,2,6,6-tetramethyl-4-piperidyl)im ino]] can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: February 29, 1988Date of Patent: December 27, 1988Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4574134Abstract: The addition of at least one anti-haze agent selected from the group consisting of saturated fatty acid amides, unsaturated fatty acid amides, unsaturated fatty acid amides, tertiary alkanolamines, hydrocarbyl sulfates and alkyl benzene sulfonates to a nitrite-containing copolymer of a conjugated diene and a monovinyl-substituted aromatic hydrocarbon monomer provide novel compositions which give reduced haze formation when subjected to molding conditions.Type: GrantFiled: November 9, 1984Date of Patent: March 4, 1986Assignee: Phillips Petroleum CompanyInventors: Kenneth W. Willcox, Kenneth R. Mills
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Patent number: 4370437Abstract: The addition of a nitrite-sorbate stabilizing system to a copolymer of a conjugated diene and a monovinyl-substituted aromatic hydrocarbon improves thermal stability and suppresses gel and fisheye formation.Type: GrantFiled: February 5, 1982Date of Patent: January 25, 1983Assignee: Phillips Petroleum CompanyInventors: Kenneth W. Willcox, James C. Randall
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Patent number: 4182810Abstract: An olefin or mixture of olefins is polymerized in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent (particle form process). Fouling of the reactor by adherence of polymer particles to the walls of the reactor is reduced by adding to the reaction medium a composition which comprises a mixture of (a) a polysulfone copolymer, (b) a polymeric polyamine, and (c) an oil-soluble sulfonic acid.Type: GrantFiled: April 21, 1978Date of Patent: January 8, 1980Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4173597Abstract: A blend comprising (1) a styrene polymer and (2) thermoplastic elastomer of a monovinyl-substituted aromatic compound and a conjugated diene having a melt flow within the range of 2-15, said blend having a diene content within the range of 18-24 weight percent. Such blends have outstanding toughness.Type: GrantFiled: January 23, 1978Date of Patent: November 6, 1979Assignee: Phillips Petroleum CompanyInventors: Kenneth W. Willcox, Fay W. Bailey
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Patent number: 4171958Abstract: An olefin is polymerized in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent. Fouling of the reactor by adherence of polymer particles to the walls of the reactor is reduced by adding to the reaction medium a composition which comprises a porphyrin compound, alone or together with a metal alkyl sulfosuccinate. This composition is also useful as an antistatic agent for liquid hydrocarbons and halohydrocarbons.Type: GrantFiled: November 3, 1977Date of Patent: October 23, 1979Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4068054Abstract: An olefin is polymerized in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent. Fouling of the reactor by adherence of polymer particles to the walls of the reactor is reduced by adding to the reaction medium a composition which comprises a porphyrin compound, alone or together with a metal alkyl sulfosuccinate. This composition is also useful as an antistatic agent for liquid hydrocarbons and halohydrocarbons.Type: GrantFiled: August 2, 1976Date of Patent: January 10, 1978Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: T103702Abstract: An alkali metal or alkaline earth metal nitrite is added to a polymer blend comprising (1) block copolymer formed from monovinyl-substituted aromatic hydrocarbon monomer and a conjugated diene monomer and (2) styrene polymer to improve thermal stability and to inhibit gel and fisheye formation.Type: GrantFiled: August 2, 1982Date of Patent: December 6, 1983Inventors: Kenneth W. Willcox, James N. Short