Patents by Inventor George Wyatt Prejean
George Wyatt Prejean 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: 20230057902Abstract: A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer-modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.Type: ApplicationFiled: October 14, 2022Publication date: February 23, 2023Inventors: George Wyatt Prejean, CHARLES J. DUBOIS
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Patent number: 10669423Abstract: A modified asphalt composition comprises or is produced from asphalt and phosphorous acid. The composition optionally further comprises one or more of an ethylene copolymer that comprises copolymerized units derived from ethylene and an epoxy-containing comonomer and a nonreactive polymer such as a styrene/conjugated-diene block copolymer. Further provided are processes for producing the composition in addition to products such as paving materials and roofing materials that comprise the compositions.Type: GrantFiled: July 28, 2016Date of Patent: June 2, 2020Inventor: George Wyatt Prejean
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Publication number: 20200024454Abstract: A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer-modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.Type: ApplicationFiled: December 20, 2016Publication date: January 23, 2020Inventors: George Wyatt Prejean, Charles J. DuBois
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Patent number: 10435560Abstract: In a process for producing a cross-linked asphalt/polymer composition (“polymer-modified asphalt” or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and an epoxy-containing comonomer. An improvement in asphalt properties is demonstrated without the use of an acid catalyst.Type: GrantFiled: June 28, 2016Date of Patent: October 8, 2019Assignee: Performance Materials NA, Inc.Inventors: Charles J. Dubois, George Wyatt Prejean
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Publication number: 20180223101Abstract: A modified asphalt composition comprises or is produced from asphalt and phosphorous acid. The composition optionally further comprises one or more of an ethylene copolymer that comprises copolymerized units derived from ethylene and an epoxy-containing comonomer and a nonreactive polymer such as a styrene/conjugated-diene block copolymer. Further provided are processes for producing the composition in addition to products such as paving materials and roofing materials that comprise the compositions.Type: ApplicationFiled: July 28, 2016Publication date: August 9, 2018Inventor: George Wyatt Prejean
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Publication number: 20180208769Abstract: This invention relates to polyepoxy-polymer-linked-asphalt having enhanced properties made by reacting a glycidyl-functionalized ethylene copolymer with reactive asphalt, wherein the glycidyl-functionalized ethylene copolymer has a glycidyl-containing comonomer content of 15.1 weight percent or greater.Type: ApplicationFiled: July 15, 2016Publication date: July 26, 2018Inventor: George Wyatt Prejean
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Publication number: 20180030276Abstract: Provided herein is an asphalt composition comprising or produced from asphalt, a solution of ethylene copolymer dissolved in flux oil or liquid plasticizer, and optionally a sulfur source or acid, wherein the ethylene copolymer comprises repeat units derived from ethylene and from an epoxy-containing comonomer. Further provided are processes for making the solution of ethylene copolymer in flux oil or liquid plasticizer and the asphalt composition comprising or produced from this solution.Type: ApplicationFiled: February 26, 2016Publication date: February 1, 2018Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: James R. De Garavilla, Charles J. DuBois, George Wyatt Prejean, Sara Luisa Reynoso Gomez, Felipe Sanchez-Chavez
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Publication number: 20170002202Abstract: In a process for producing a cross-linked asphalt/polymer composition (“polymer-modified asphalt” or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and an epoxy-containing comonomer. An improvement in asphalt properties is demonstrated without the use of an acid catalyst.Type: ApplicationFiled: June 28, 2016Publication date: January 5, 2017Inventors: Charles J. DuBois, George Wyatt Prejean
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Publication number: 20160076727Abstract: A lighting device comprising a light emitting diode and a cover comprising an ionomer composition that has improved optical properties. The ionomer composition comprises an ionomer that is produced by partially neutralizing a precursor acid copolymer that has a melt index of about 20 to about 400 g/10 min. The precursor acid copolymer comprises copolymerized units of an ?-olefin having 2 to 10 carbons and, based on the total weight of the precursor acid copolymer, about 12 to about 30 weight % of copolymerized units of an ?,?-ethylenically unsaturated carboxylic acid having 3 to 8 carbons.Type: ApplicationFiled: September 17, 2015Publication date: March 17, 2016Inventors: STEVEN C. PESEK, Shannon D. Meerscheidt, W. Alexander Shaffer, David M. Dean, Sebastien Tindilliere, George Wyatt Prejean, William J. Glick, Charles Anthony Smith, Karlheinz Hausmann, Loic Pierre Rolland
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Patent number: 8609777Abstract: Provided herein is a blend composition useful as a cross-linkable encapsulant layer and consisting essentially of two ethylene copolymers and optionally one or more additives. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. Further provided are solar cell modules comprising the encapsulant layer. The encapsulant layer comprises the blend composition or the product of cross-linking the blend composition, in which some acid groups of the second olefin have reacted with some epoxy groups of the third olefin.Type: GrantFiled: July 30, 2010Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: George Wyatt Prejean, Rebecca L Smith
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Patent number: 8609980Abstract: Provided herein is a blend composition useful as a cross-linkable encapsulant layer and consisting essentially of two ethylene copolymers and optionally one or more additives. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. At least a portion of the carboxylic acid groups have been neutralized to form carboxylate salts. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. Further provided are solar cell modules comprising the encapsulant layer.Type: GrantFiled: July 30, 2010Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: George Wyatt Prejean, Alison Margaret Anne Bennett
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Patent number: 8603272Abstract: A multilayer film comprises a layer consisting essentially of a fluorinated copolymer resin film and a layer consisting essentially of a blend of two ethylene copolymers. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. The multilayer film is useful as an integrated frontsheet or backsheet for photovoltaic modules. Methods for preparing the multilayer film and the photovoltaic modules are also included.Type: GrantFiled: July 29, 2011Date of Patent: December 10, 2013Assignee: E I du Pont de Nemours and CompanyInventors: George Wyatt Prejean, Sam Louis Samuels
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Patent number: 8598446Abstract: A safety laminate comprises an interlayer that comprises a crosslinkable blend of ethylene copolymers. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. The first ethylene copolymer is optionally at least partially neutralized. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. The crosslinkable blend is useful as an interlayer in safety laminates. Methods for preparing the safety laminates are also provided.Type: GrantFiled: July 29, 2011Date of Patent: December 3, 2013Assignee: E I du Pont de Nemours and CompanyInventors: George Wyatt Prejean, Sam Louis Samuels, Alison Margaret Anne Bennett
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Patent number: 8507097Abstract: A multilayer film comprises a layer consisting essentially of a fluorinated copolymer resin and a layer consisting essentially of an ethylene copolymer ionomer blend. The ethylene copolymer ionomer blend, or the product of crosslinking the blend, can be used as an encapsulant layer for solar cells, and the multilayer film is useful as a component of photovoltaic modules. Methods for preparing the multilayer films and the photovoltaic modules are also described.Type: GrantFiled: December 21, 2010Date of Patent: August 13, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Penny L. Perry, George Wyatt Prejean, Sam Louis Samuels
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Patent number: 8409379Abstract: Disclosed is a multilayer film laminate comprising a layer consisting essentially of a fluorinated copolymer resin and a layer consisting essentially of an ethylene terpolymer. The ethylene terpolymer layer can be used as an encapsulant layer for solar cells and the multilayer laminate is useful as a component of photovoltaic modules. Methods for preparing photovoltaic modules are also included.Type: GrantFiled: July 30, 2010Date of Patent: April 2, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Sam Louis Samuels, George Wyatt Prejean
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Patent number: 8399081Abstract: A solar cell module comprising a solar cell layer and an ionomer sheet comprising a sodium/zinc mixed ionomer that is the neutralization product of a precursor acid copolymer; wherein the precursor acid copolymer comprises copolymerized units of an ?-olefin having 2 to 10 carbon atoms and about 20 to about 30 wt % of copolymerized units of an ?,?-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms based on the total weight of the precursor acid copolymer; wherein the precursor acid copolymer has a melt flow rate of about 70 to about 1000 g/10 min, as determined in accordance with ASTM D1238 at 190° C. and 2.16 kg; and wherein when about 40% to about 90% of the total content of the carboxylic acid groups present in the precursor acid copolymer are neutralized to carboxylate groups to comprise carboxylate groups and counterions that consist essentially of sodium ions, the resulting sodium ionomer has a freeze enthalpy that is not detectable or that is less than about 3.Type: GrantFiled: November 2, 2009Date of Patent: March 19, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Richard Allen Hayes, Steven C. Pesek, W Alexander Shaffer, Charles Anthony Smith, George Wyatt Prejean
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Publication number: 20120152323Abstract: A multilayer film comprises a layer consisting essentially of a fluorinated copolymer resin and a layer consisting essentially of an ethylene copolymer ionomer blend. The ethylene copolymer ionomer blend, or the product of crosslinking the blend, can be used as an encapsulant layer for solar cells, and the multilayer film is useful as a component of photovoltaic modules. Methods for preparing the multilayer films and the photovoltaic modules are also described.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: PENNY L. PERRY, GEORGE WYATT PREJEAN, SAM LOUIS SAMUELS
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Publication number: 20120024351Abstract: A multilayer film comprises a layer consisting essentially of a fluorinated copolymer resin film and a layer consisting essentially of a blend of two ethylene copolymers. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. The multilayer film is useful as an integrated frontsheet or backsheet for photovoltaic modules. Methods for preparing the multilayer film and the photovoltaic modules are also included.Type: ApplicationFiled: July 29, 2011Publication date: February 2, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: George Wyatt Prejean, Sam Louis Samuels
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Publication number: 20120024348Abstract: Provided herein is a blend composition useful as a cross-linkable encapsulant layer and consisting essentially of two ethylene copolymers and optionally one or more additives. The first ethylene copolymer comprises copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a second olefin having the formula CH2?C(R3)COOH. At least a portion of the carboxylic acid groups have been neutralized to form carboxylate salts. The second ethylene copolymer consists essentially of copolymerized units of ethylene, optionally a first olefin having the formula CH2?C(R1)CO2R2, and a third olefin having the formula CH2?C(R4)D. R1, R3 and R4 represent hydrogen or an alkyl group; R2 represents an alkyl group; and D represents a moiety containing an epoxy group. Further provided are solar cell modules comprising the encapsulant layer.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: GEORGE WYATT PREJEAN, Alison Margaret Anne Bennett
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Publication number: 20120024450Abstract: Disclosed is a multilayer film laminate comprising a layer consisting essentially of a fluorinated copolymer resin and a layer consisting essentially of an ethylene terpolymer. The ethylene terpolymer layer can be used as an encapsulant layer for solar cells and the multilayer laminate is useful as a component of photovoltaic modules. Methods for preparing photovoltaic modules are also included.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: SAM LOUIS SAMUELS, George Wyatt Prejean