Patents by Inventor Thomas H. Kozel
Thomas H. Kozel 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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Publication number: 20230346711Abstract: Encapsulated peroxide particles inhibit skin inflammation. A method of encapsulating a solid peroxide comprises dispersing solid peroxide particles (e.g., benzoyl peroxide) in an aqueous dispersion of fatty acid salt to form a peroxide/fatty acid salt dispersion, wherein the peroxide particles have a mean particle size (D50) of 10 ?m or less; and subsequently encapsulating the solid peroxide particles by reacting the one or more monovalent fatty acid salts with one or more multivalent salts of calcium, magnesium, aluminum, silver, and/or zinc, thereby forming encapsulated peroxide particles.Type: ApplicationFiled: July 12, 2023Publication date: November 2, 2023Inventors: Peter R. DLUZNESKI, Tomas SALVADOR, Thomas H. KOZEL
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Patent number: 11634537Abstract: The present invention is directed to a polymerizable composition comprising (A) a reaction product of: (a) diethyleneglycol bischloroformate, ethyleneglycol bischloroformate, or combinations thereof; (b) allyl alcohol; (c) optionally, a cyclic polyol selected from the group consisting of a cycloaliphatic polyol having at least one secondary hydroxyl group, a heterocyclic polyol having primary and/or secondary hydroxyl groups, and mixtures thereof; and (d) optionally, at least one linear or branched aliphatic polyol having two to six hydroxyl groups; and (B) an organic peroxide comprising at least three peroxide groups. A polymerizate and/or an optical article comprising the polymerizable compositions of the invention are also provided.Type: GrantFiled: December 18, 2018Date of Patent: April 25, 2023Assignee: Arkema Inc.Inventors: Robert D. Herold, Marco Herrera, Thomas H. Kozel, Leonard H. Palys, Brandy Slezak, Bruno Georges Van Hemelryck
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Patent number: 11560535Abstract: Evaporation of water from an aqueous dispersion of a solid peroxide such as benzoyl peroxide is retarded by the incorporation of carboxylic acid salt. The carboxylic acid salt renders the aqueous dispersion less susceptible to explosive decomposition when exposed to external triggering events such as impact, heat, friction or contamination, yet does not interfere with the ability to achieve and maintain a stable, small particle size dispersion having desirable viscosity and flow properties.Type: GrantFiled: June 6, 2017Date of Patent: January 24, 2023Assignee: Arkema Inc.Inventors: Thomas H. Kozel, Lisa B. Rachwal
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Patent number: 11518866Abstract: Liquid resin compositions that can be used in the manufacture of composite materials are described. A method of making a fiber-reinforced polymeric composite material comprises wetting a fibrous material with a liquid prepolymer composition comprising at least one (meth)acrylic monomer, at least one base, and at least one peroxy ester; and polymerizing the liquid prepolymer composition to form a fiber-reinforced polymeric composite material.Type: GrantFiled: November 30, 2016Date of Patent: December 6, 2022Assignee: ARKEMA INC.Inventors: Marine Sauvage, Thomas H. Kozel, Dana Lee Swan, Nathan John Bachman
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Publication number: 20210070931Abstract: The present invention is directed to a polymerizable composition comprising (A) a reaction product of: (a) diethyleneglycol bischloroformate, ethyleneglycol bischloroformate, or combinations thereof; (b) allyl alcohol; (c) optionally, a cyclic polyol selected from the group consisting of a cycloaliphatic polyol having at least one secondary hydroxyl group, a heterocyclic polyol having primary and/or secondary hydroxyl groups, and mixtures thereof; and (d) optionally, at least one linear or branched aliphatic polyol having two to six hydroxyl groups; and (B) an organic peroxide comprising at least three peroxide groups. A polymerizate and/or an optical article comprising the polymerizable compositions of the invention are also provided.Type: ApplicationFiled: December 18, 2018Publication date: March 11, 2021Inventors: Robert D. HEROLD, Marco HERRERA, Thomas H. KOZEL, Leonard H. PALYS, Brandy SLEZAK, Bruno Georges VAN HEMELRYCK
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Patent number: 10925302Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped. The aqueous dispersions are useful as components of pharmaceutical, personal care, and cleaning products and the like and are effective decolorizing agents for food products, industrial products and the like.Type: GrantFiled: November 29, 2017Date of Patent: February 23, 2021Assignee: Arkema Inc.Inventors: Thomas H Kozel, Joseph M. Gravelle, Timothy Belford, Tomas Salvador, Marina Despotopoulou
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Publication number: 20190292495Abstract: Evaporation of water from an aqueous dispersion of a solid peroxide such as benzoyl peroxide is retarded by the incorporation of carboxylic acid salt. The carboxylic acid salt renders the aqueous dispersion less susceptible to explosive decomposition when exposed to external triggering events such as impact, heat, friction or contamination, yet does not interfere with the ability to achieve and maintain a stable, small particle size dispersion having desirable viscosity and flow properties.Type: ApplicationFiled: June 6, 2017Publication date: September 26, 2019Inventors: Thomas H. KOZEL, Lisa B. RACHWAL
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Publication number: 20190060245Abstract: Encapsulated peroxide particles inhibit skin inflammation. A method of encapsulating a solid peroxide comprises dispersing solid peroxide particles (e.g., benzoyl peroxide) in an aqueous dispersion of fatty acid salt to form a peroxide/fatty acid salt dispersion, wherein the peroxide particles have a mean particle size (D50) of 10 ?m or less; and subsequently encapsulating the solid peroxide particles by reacting the one or more monovalent fatty acid salts with one or more multivalent salts of calcium, magnesium, aluminum, silver, and/or zinc, thereby forming encapsulated peroxide particles.Type: ApplicationFiled: February 28, 2017Publication date: February 28, 2019Inventors: Peter R. DLUZNESKI, Tomas SALVADOR, Thomas H. KOZEL
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Publication number: 20180355133Abstract: Liquid resin compositions that can be used in the manufacture of composite materials are described. A method of making a fiber-reinforced polymeric composite material comprises wetting a fibrous material with a liquid prepolymer composition comprising at least one (meth)acrylic monomer, at least one base, and at least one peroxy ester; and polymerizing the liquid prepolymer composition to form a fiber-reinforced polymeric composite material.Type: ApplicationFiled: November 30, 2016Publication date: December 13, 2018Inventors: Marine SAUVAGE, Thomas H. KOZEL, Dana Lee SWAN, Nathan John BACHMAN
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Patent number: 9937473Abstract: Provided are dispersions which comprise more than about up to 55 percent by weight or more of an organic peroxide which is normally solid in an anhydrous liquid phase such as dibutyl maleate or dioctyl adipate, with about 5% by weight or more fumed silica to provide a thixotropic, storage stable organic peroxide paste. Addition of about 5 weight % or more of fumed silica was found to result in the formation of a shear thinning anhydrous dispersion of organic peroxide which was storage stable.Type: GrantFiled: November 18, 2015Date of Patent: April 10, 2018Assignee: Arkema Inc.Inventors: Joseph M. Gravelle, Thomas H. Kozel
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Publication number: 20180077954Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped. The aqueous dispersions are useful as components of pharmaceutical, personal care, and cleaning products and the like and are effective decolorizing agents for food products, industrial products and the like.Type: ApplicationFiled: November 29, 2017Publication date: March 22, 2018Inventors: Thomas H. Kozel, Joseph M. GRAVELLE, Timothy BELFORD, Tomas SALVADOR, Marina DESPOTOPOULOU
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Patent number: 9861119Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped. The aqueous dispersions are useful as components of pharmaceutical, personal care, and cleaning products and the like and are effective decolorizing agents for food products, industrial products and the like.Type: GrantFiled: August 29, 2013Date of Patent: January 9, 2018Assignee: Arkema Inc.Inventors: Thomas H. Kozel, Joseph M. Gravelle, Timothy Belford, Tomas Salvador, Marina Despotopoulou
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Publication number: 20180000948Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped.Type: ApplicationFiled: September 18, 2017Publication date: January 4, 2018Inventors: Thomas H. Kozel, Joseph M. Gravelle, Timothy Belford, Tomas Salvador
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Patent number: 9775909Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped.Type: GrantFiled: March 1, 2013Date of Patent: October 3, 2017Assignee: Arkema Inc.Inventors: Thomas H. Kozel, Joseph M. Gravelle, Timothy Belford, Tomas Salvador
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Publication number: 20160136601Abstract: Provided are dispersions which comprise more than about up to 55 percent by weight or more of an organic peroxide which is normally solid in an anhydrous liquid phase such as dibutyl maleate or dioctyl adipate, with about 5% by weight or more fumed silica to provide a thixotropic, storage stable organic peroxide paste. Addition of about 5 weight % or more of fumed silica was found to result in the formation of a shear thinning anhydrous dispersion of organic peroxide which was storage stable.Type: ApplicationFiled: November 18, 2015Publication date: May 19, 2016Applicant: Arkema Inc.Inventors: Joseph M. Gravelle, Thomas H. KOZEL
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Patent number: 9217044Abstract: Provided are dispersions which comprise more than about up to 55 percent by weight or more of an organic peroxide which is normally solid in an anhydrous liquid phase such as dibutyl maleate or dioctyl adipate, with about 5% by weight or more fumed silica to provide a thixotropic, storage stable organic peroxide paste. Addition of about 5 weight % or more of fumed silica was found to result in the formation of a shear thinning anhydrous dispersion of organic peroxide which was storage stable.Type: GrantFiled: February 3, 2010Date of Patent: December 22, 2015Assignee: Arkema Inc.Inventors: Joseph M. Gravelle, Thomas H. Kozel
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Publication number: 20150165043Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped.Type: ApplicationFiled: March 1, 2013Publication date: June 18, 2015Inventors: Thomas H. Kozel, Joseph M. Gravelle, Timothy Belford, Tomas Salvador
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Publication number: 20130344152Abstract: The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of C6-C12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped. The aqueous dispersions are useful as components of pharmaceutical, personal care, and cleaning products and the like and are effective decolorizing agents for food products, industrial products and the like.Type: ApplicationFiled: August 29, 2013Publication date: December 26, 2013Applicant: Arkema Inc.Inventors: Thomas H. KOZEL, Joseph M. Gravelle, Timothy Belford, Tomas Salvador, Marina Despotopoulou
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Publication number: 20110291045Abstract: Provided are dispersions which comprise more than about up to 55 percent by weight or more of an organic peroxide which is normally solid in an anhydrous liquid phase such as dibutyl maleate or dioctyl adipate, with about 5% by weight or more fumed silica to provide a thixotropic, storage stable organic peroxide paste. Addition of about 5 weight % or more of fumed silica was found to result in the formation of a shear thinning anhydrous dispersion of organic peroxide which was storage stable.Type: ApplicationFiled: February 3, 2010Publication date: December 1, 2011Applicant: Arkema Inc.Inventors: Joseph M. Gravelle, Thomas H. Kozel
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Publication number: 20110250373Abstract: The use of nitroxides to control free radical cured resin systems used in the production of thermosetting materials such as in vacuum infusion, resin transfer molding and cured in place piping systems is disclosed. The invention could also be employed in other resin systems where control of kinetics would be desirable such as in adhesive formulations, in solid surface composites, and certain types of polyester casting resins.Type: ApplicationFiled: November 24, 2009Publication date: October 13, 2011Applicant: Arkema Inc.Inventors: Thomas H. Kozel, Michael O. Wells