Patents by Inventor I. John Westerman
I. John Westerman 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: 8557914Abstract: A latex binder for a pigmented paper coating, the latex including particles of an emulsion copolymer comprising (i) from about 15 to about 35 weight % mer units deriving from the polymerization of acrylonitrile; (ii) from about 25 to about 65 weight % mer units deriving from the polymerization of conjugated diene monomer; and (iii) from about 5 to about 55 weight % mer units deriving from the polymerization of alkenyl aromatic monomer, based upon the total weight of the mer units within the particle.Type: GrantFiled: September 8, 2009Date of Patent: October 15, 2013Assignee: OMNOVA Solutions Inc.Inventors: I. John Westerman, Jaclyn Laurich, R. Michael Flickinger
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Publication number: 20110224362Abstract: A latex binder for a pigmented paper coating, the latex including particles of an emulsion copolymer comprising (i) from about 15 to about 35 weight % mer units deriving from the polymerization of acrylonitrile; (ii) from about 25 to about 65 weight % mer units deriving from the polymerization of conjugated diene monomer; and (iii) from about 5 to about 55 weight % mer units deriving from the polymerization of alkenyl aromatic monomer, based upon the total weight of the mer units within the particle.Type: ApplicationFiled: September 8, 2009Publication date: September 15, 2011Inventors: I. John Westerman, Jaclyn Laurich, R. Michael Flickinger
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Patent number: 7629410Abstract: A latex composition having a polymodal particle size distribution. The latex composition is useful in paper coatings.Type: GrantFiled: February 13, 2006Date of Patent: December 8, 2009Assignee: OMNOVA Solutions Inc.Inventors: I. John Westerman, Jaclyn Beth Laurich, Michael Flickinger, Douglas Oblak
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Patent number: 6881778Abstract: A polyvinyl alcohol copolymer latex composition comprises an intimate polymer composition obtained from 10% to 60% by weight of a substantially hydrolyzed low molecular weight polyvinyl alcohol (PVOH); 2% to 80% by weight of at least one diene; 2% to 80% by weight of at least one hydrophobic monomer other than a diene and optionally either up to 10% by weight of at least one hydrophilic ethylenically unsaturated acid monomer or up to 40% by weight of a cationic monomer. The copolymer latex composition can be prepared as an emulsion from an aqueous blend of the above listed monomers which are generally added at various stages during the polymerization and a free radical initiator, surfactants, and, if desirable, chain transfer agents. Up to 80% of the PVOH may be added after the monomers have been polymerized.Type: GrantFiled: December 19, 2002Date of Patent: April 19, 2005Assignee: OMNOVA Solutions Inc.Inventors: Nick G. Triantafillopoulos, Carla B. Dittman-McBain, I. John Westerman, Michael F. Richardson, William C. Floyd
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Publication number: 20030125453Abstract: A polyvinyl alcohol copolymer latex composition comprises an intimate polymer composition obtained from 10% to 60% by weight of a substantially hydrolyzed low molecular weight polyvinyl alcohol (PVOH); 2% to 80% by weight of at least one diene; 2% to 80% by weight of at least one hydrophobic monomer other than a diene and optionally either up to 10% by weight of at least one hydrophilic ethylenically unsaturated acid monomer or up to 40% by weight of a cationic monomer. The copolymer latex composition can be prepared as an emulsion from an aqueous blend of the above listed monomers which are generally added at various stages during the polymerization and a free radical initiator, surfactants, and, if desirable, chain transfer agents. Up to 80% of the PVOH may be added after the monomers have been polymerized.Type: ApplicationFiled: December 19, 2002Publication date: July 3, 2003Inventors: Nick G. Triantafillopoulos, Carla B. Dittman McBain, I. John Westerman, Michael F. Richardson, William C. Floyd
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Patent number: 6030928Abstract: The soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or a hydrophilic N-vinyl lactam for applications under hostile conditions.Type: GrantFiled: October 28, 1992Date of Patent: February 29, 2000Assignee: Phillips Petroleum CompanyInventors: G. Allan Stahl, Ahmad Moradi-Araghi, I. John Westerman, Henry L. Hsieh
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Patent number: 5382371Abstract: Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or a hydrophilic N-vinyl lactam for applications under hostile conditions.Type: GrantFiled: November 6, 1992Date of Patent: January 17, 1995Assignee: Phillips Petroleum CompanyInventors: G. Allan Stahl, Ahmad Moradi-Araghi, I. John Westerman, Henry L. Hsieh, James H. Hedges, Geir Bjornson
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Patent number: 5080809Abstract: Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or a hydrophilic N-vinyl lactam for applications under hostile conditions.Type: GrantFiled: July 18, 1985Date of Patent: January 14, 1992Assignee: Phillips Petroleum CompanyInventors: G. Allan Stahl, I. John Westerman, Henry L. Hsieh, Ahmad Moradi-Araghi, James H. Hedges, Geir Bjornson
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Patent number: 4951921Abstract: Water-soluble polymers comprising an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-Vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate and a hydrophilic N-vinyl lactam under hostile conditions.Type: GrantFiled: January 9, 1984Date of Patent: August 28, 1990Assignee: Phillips Petroleum CompanyInventors: G. Allan Stahl, I. John Westerman, Henry L. Hsieh, Ahmad Moradi-Araghi