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).

  • Ethylene polymer compositions
    Patent number: 5378747
    Abstract: 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: Grant
    Filed: December 28, 1992
    Date of Patent: January 3, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Paritosh K. Das, Kenneth W. Willcox
  • Polyethylene compositions
    Patent number: 5308900
    Abstract: 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: Grant
    Filed: November 24, 1992
    Date of Patent: May 3, 1994
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Additive to improve polymer clarity and viscosity
    Patent number: 5270369
    Abstract: 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: Grant
    Filed: October 21, 1992
    Date of Patent: December 14, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth W. Willcox, Francis X. Mueller, Jr.
  • Corrosion inhibition of stereoregular, branched-mono-1-olefin polymers
    Patent number: 5238980
    Abstract: 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: Grant
    Filed: December 17, 1992
    Date of Patent: August 24, 1993
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Catalysts containing poly(3-ethyl-1-hexene) and uses thereof
    Patent number: 5194415
    Abstract: 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: Grant
    Filed: December 12, 1991
    Date of Patent: March 16, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Phil M. Stricklen, Francis X. Mueller, Jr., Kenneth W. Willcox, Joyce K. Snow
  • Process to deodorize an odorous poly(mono-1-olefin)
    Patent number: 5194582
    Abstract: 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: Grant
    Filed: August 21, 1992
    Date of Patent: March 16, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Robert B. Eldridge, Francis X. Mueller, Jr., Ralph C. Farrar, Jr., Kenneth W. Willcox, Kiplin D. Cowan, David R. Battiste
  • Catalysts containing poly(3-ethyl-1-hexene) and uses thereof
    Patent number: 5115054
    Abstract: 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: Grant
    Filed: October 12, 1990
    Date of Patent: May 19, 1992
    Assignee: Phillips Petroleum Company
    Inventors: Phil M. Stricklen, Francis X. Mueller, Jr., Kenneth W. Willcox, Joyce K. Snow
  • Apparatus and method for evaluating the propensity of polymers for smoking during processing
    Patent number: 5110214
    Abstract: 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: Grant
    Filed: July 9, 1990
    Date of Patent: May 5, 1992
    Assignee: Phillips Petroleum Company
    Inventors: David R. Battiste, Kenneth W. Willcox, Tommy J. Morgan
  • Deodorizing odorous polyolefins with low concentrations of inorganic oxidizing agents
    Patent number: 5066686
    Abstract: 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: Grant
    Filed: July 16, 1990
    Date of Patent: November 19, 1991
    Assignee: Phillips Petroleum Company
    Inventors: Lawrence M. Fodor, Kenneth W. Willcox
  • Corrosion inhibition of polymethylpentene
    Patent number: 5066460
    Abstract: 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: Grant
    Filed: July 16, 1990
    Date of Patent: November 19, 1991
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Corrosion inhibition of polymethylphenthene
    Patent number: 5000917
    Abstract: 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: Grant
    Filed: July 30, 1990
    Date of Patent: March 19, 1991
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Corrosion inhibition of polymethylpentene
    Patent number: 4968736
    Abstract: 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: Grant
    Filed: August 23, 1988
    Date of Patent: November 6, 1990
    Inventor: Kenneth W. Willcox
  • Corrosion inhibition of polymethylpentene
    Patent number: 4793972
    Abstract: 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: Grant
    Filed: February 29, 1988
    Date of Patent: December 27, 1988
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Antihaze compositions and process
    Patent number: 4574134
    Abstract: 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: Grant
    Filed: November 9, 1984
    Date of Patent: March 4, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth W. Willcox, Kenneth R. Mills
  • Nitrite-sorbate stabilizing system
    Patent number: 4370437
    Abstract: 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: Grant
    Filed: February 5, 1982
    Date of Patent: January 25, 1983
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth W. Willcox, James C. Randall
  • Prevention of fouling in polymerization reactors
    Patent number: 4182810
    Abstract: 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: Grant
    Filed: April 21, 1978
    Date of Patent: January 8, 1980
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Impact styrene polymer blends with thermoplastic elastomers
    Patent number: 4173597
    Abstract: 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: Grant
    Filed: January 23, 1978
    Date of Patent: November 6, 1979
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth W. Willcox, Fay W. Bailey
  • Antistatic hydrocarbon or halohydrocarbon composition
    Patent number: 4171958
    Abstract: 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: Grant
    Filed: November 3, 1977
    Date of Patent: October 23, 1979
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Prevention of fouling in polymerization reactors and antistatic agents
    Patent number: 4068054
    Abstract: 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: Grant
    Filed: August 2, 1976
    Date of Patent: January 10, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Stabilization of polymer blends with metal nitrites
    Patent number: T103702
    Abstract: 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: Grant
    Filed: August 2, 1982
    Date of Patent: December 6, 1983
    Inventors: Kenneth W. Willcox, James N. Short