Patents by Inventor Timothy A. Libert
Timothy A. Libert 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: 10597533Abstract: Disclosed is a polyamide-ionomer composition suitable for use in a backsheet in a photovoltaic module comprising a polymer component a polyamide and an anhydride ionomer comprising a copolymer of ethylene, an alpha, beta-unsaturated C3-C8 carboxylic acid and an ethylenically unsaturated dicarboxylic acid or derivative thereof selected from the group consisting of maleic acid, fumaric acid, itaconic acid, maleic anhydride, and a C1-C1 alkyl half ester of maleic acid, wherein the carboxylic acid functionalities present are at least partially neutralized to carboxylate salts of one or more alkali metal, transition metal, or alkaline earth metal cations; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; preferably wherein the combination of pigment and filler comprises 10 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: GrantFiled: June 15, 2017Date of Patent: March 24, 2020Assignee: Performance Materials NA, Inc.Inventors: Richard T. Chou, Timothy A. Libert, Barry Alan Morris, Benjamin Andrew Smillie, Jingjing Xu
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Patent number: 10247522Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.Type: GrantFiled: April 20, 2016Date of Patent: April 2, 2019Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A Libert, Bryan Benedict Sauer, Kenneth C Harding
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Publication number: 20180245885Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: ApplicationFiled: January 31, 2018Publication date: August 30, 2018Inventors: JAMES NEAL SINGLETARY, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A. Libert, Bryan Benedict Sauer
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Patent number: 9982967Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: GrantFiled: May 12, 2015Date of Patent: May 29, 2018Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A Libert, Bryan Benedict Sauer
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Patent number: 9978898Abstract: Disclosed are multilayer structures comprising polyamide-ionomer compositions suitable for use in a backsheet in a photovoltaic module comprising a polymer component comprising a polyamide and an ionomer; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; preferably wherein the combination of pigment and filler comprises 8 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: GrantFiled: April 29, 2015Date of Patent: May 22, 2018Assignee: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Timothy A Libert, Jingjing Xu, Barry Alan Morris, Benjamin Andrew Smillie, Richard T Chou
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Publication number: 20170282504Abstract: Disclosed is a polyamide-ionomer composition suitable for use in a backsheet in a photovoltaic module comprising a polymer component comprising a polyamide and an ionomer comprising a copolymer of ethylene, an alpha, beta-unsaturated C3-C8 carboxylic acid, wherein the carboxylic acid functionalities present are at least partially neutralized to carboxylate salts of one or more alkali metal, transition metal, or alkaline earth metal cations; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; wherein the combination of pigment and filler comprises 8 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Inventors: RICHARD T. CHOU, TIMOTHY A. LIBERT, BARRY ALAN MORRIS, BENJAMIN ANDREW SMILLIE, JINGJING XU
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Publication number: 20170290213Abstract: Disclosed is a polyamide-ionomer composition suitable for use in a backsheet in a photovoltaic module comprising a polymer component a polyamide and an anhydride ionomer comprising a copolymer of ethylene, an alpha, beta-unsaturated C3-C8 carboxylic acid and an ethylenically unsaturated dicarboxylic acid or derivative thereof selected from the group consisting of maleic acid, fumaric acid, itaconic acid, maleic anhydride, and a C1-C1 alkyl half ester of maleic acid, wherein the carboxylic acid functionalities present are at least partially neutralized to carboxylate salts of one or more alkali metal, transition metal, or alkaline earth metal cations; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; preferably wherein the combination of pigment and filler comprises 10 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Inventors: RICHARD T. CHOU, TIMOTHY A. LIBERT, BARRY ALAN MORRIS, BENJAMIN ANDREW SMILLIE, JINGJING XU
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Publication number: 20160280600Abstract: A method for providing a polymer-modified fiber-cement composite by forming an aqueous composition including admixing an aqueous dispersion comprising a water dispersible ionomer and an ethylene elastomer, an ethylene dicarboxyl copolymer, an ethylene ester copolymer or a grafted copolymer, cement, cellulosic fibers, siliceous material, and water; forming a composite precursor by removal of at least some of the water; and curing/drying the composite precursor at a temperature at least 10° C. higher than the Tg of the polymer is provided. Polymer-modified fiber-cement composites formed by the method and articles therefrom are also provided.Type: ApplicationFiled: March 23, 2016Publication date: September 29, 2016Inventors: ALDO R. TAVAREZ, BENJAMIN ANDREW SMILLIE, TIMOTHY A. LIBERT, RICHARD ALLEN HAYES, MARK R. ROHDE
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Publication number: 20160280897Abstract: A method to form an aqueous dispersion is provided. The aqueous dispersion comprises or is produced from a blend composition, which in turn comprises or consists essentially of about 75 to about 99.9 weight % of an ionomer composition and about 0.1 to about 25 weight % of an ethylene elastomer or an ethylene dicarboxyl copolymer. The method comprises mixing the solid blend composition with water heated to a temperature of from about 80 to about 100 ° C. Further provided are the dispersible blend compositions, the aqueous dispersions, and articles produced from the aqueous dispersions.Type: ApplicationFiled: March 23, 2016Publication date: September 29, 2016Inventors: ALDO R. TAVAREZ, BENJAMIN ANDREW SMILLIE, TIMOTHY A. LIBERT, MARK R. ROHDE, RICHARD ALLEN HAYES
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Publication number: 20160265882Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.Type: ApplicationFiled: May 12, 2015Publication date: September 15, 2016Inventors: James Neal SINGLETARY, Leopoldo Alejandro CARBAJAL, William George KAMPERT, Timothy A. LIBERT, Bryan Benedict SAUER
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Publication number: 20160243790Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.Type: ApplicationFiled: April 20, 2016Publication date: August 25, 2016Inventors: James Neal Singletary, Leopoldo Alejandro Carbajal, William George Kampert, Timothy A. Libert, Bryan Benedict Sauer, Kenneth C. Harding
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Publication number: 20150311369Abstract: Disclosed is a polyamide-ionomer composition suitable for use in a backsheet in a photovoltaic module comprising a polymer component comprising a polyamide and an ionomer comprising a copolymer of ethylene, an alpha, beta-unsaturated C3-C8 carboxylic acid, wherein the carboxylic acid functionalities present are at least partially neutralized to carboxylate salts of one or more alkali metal, transition metal, or alkaline earth metal cations; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; wherein the combination of pigment and filler comprises 8 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: ApplicationFiled: April 29, 2015Publication date: October 29, 2015Inventors: RICHARD T. CHOU, TIMOTHY A. LIBERT, BARRY ALAN MORRIS, BENJAMIN ANDREW SMILLIE, JINGJING XU
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Publication number: 20150311370Abstract: Disclosed is a polyamide-ionomer composition suitable for use in a backsheet in a photovoltaic module comprising a polymer component a polyamide and an anhydride ionomer comprising a copolymer of ethylene, an alpha, beta-unsaturated C3-C8 carboxylic acid and an ethylenically unsaturated dicarboxylic acid or derivative thereof selected from the group consisting of maleic acid, fumaric acid, itaconic acid, maleic anhydride, and a C1-C1 alkyl half ester of maleic acid, wherein the carboxylic acid functionalities present are at least partially neutralized to carboxylate salts of one or more alkali metal, transition metal, or alkaline earth metal cations; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; preferably wherein the combination of pigment and filler comprises 10 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: ApplicationFiled: April 29, 2015Publication date: October 29, 2015Inventors: RICHARD T CHOU, TIMOTHY A. LIBERT, BARRY ALAN MORRIS, BENJAMIN ANDREW SMILLIE, JINGJING XU
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Publication number: 20150311368Abstract: Disclosed are multilayer structures comprising polyamide-ionomer compositions suitable for use in a backsheet in a photovoltaic module comprising a polymer component comprising a polyamide and an ionomer; 0 to 20 weight % of pigment; and 0 to 40 weight % of filler; preferably wherein the combination of pigment and filler comprises 8 to 50 weight % of the composition; and 0 to 5 weight % of weatherability additives.Type: ApplicationFiled: April 29, 2015Publication date: October 29, 2015Inventors: TIMOTHY A. LIBERT, JINGJING XU, BARRY ALAN MORRIS, BENJAMIN ANDREW SMILLIE, RICHARD T. CHOU
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Patent number: 7635736Abstract: The present invention is linear polyethylene composition suitable for use as a heat seal resin, wherein the resin comprises: (a) from about 70 wt % to about 90 wt % of a linear polyethylene having a density of from about 0.88 to about 0.92 g/cm3; (b) from about 0 wt % to about 30 wt % of a copolymer of ethylene and an ?,?-unsaturated carboxylic acid and/or an ionomer thereof; and, (c) from about 2 wt % to about 10 wt % of a tackifier.Type: GrantFiled: December 16, 2004Date of Patent: December 22, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Geraldine M. Lenges, Timothy A. Libert
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Patent number: 7438940Abstract: A breathable film involving at least one polymeric layer of 100% neutralized ionomer containing sufficient aliphatic, mono-functional organic acid salt to essentially triple the oxygen transmission value (OTV) and/or at least one polymeric layer of metallocene polyethylene (mPE) optional blended with low density polyethylene and preferably in combination with one or more outer layers of highly neutralized ionomer (e.g., Surlyn®). Such polymeric film and polymeric film structure has sufficient oxygen permeability, water vapor transmission, formability, and structural strength to be useful in wrapping food products requiring breathable films such as case ready meat, fish, sausage, fresh produce, and the like.Type: GrantFiled: April 16, 2003Date of Patent: October 21, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Barry Alan Morris, Timothy A. Libert, Julius Uradnisheck
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Publication number: 20050199524Abstract: Disclosed are packages and methods for packaging perishable foods such as meat, fish, poultry, vegetables or other food products. The packaging comprises a vacuum skin package comprising a film having specific package gas permeability requirements and a framing element within which the packaged goods are held.Type: ApplicationFiled: March 10, 2005Publication date: September 15, 2005Inventors: Donna Visioli, James Kane, Timothy Libert, Shanna Moore
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Publication number: 20050203249Abstract: The present invention is linear polyethylene composition suitable for use as a heat seal resin, wherein the resin comprises: (a) from about 70 wt % to about 90 wt % of a linear polyethylene having a density of from about 0.88 to about 0.92 g/cm3; (b) from about 0 wt % to about 30 wt % of a copolymer of ethylene and an ?,?-unsaturated carboxylic acid and/or an ionomer thereof; and, (c) from about 2 wt % to about 10 wt % of a tackifier.Type: ApplicationFiled: December 16, 2004Publication date: September 15, 2005Inventors: Geraldine Lenges, Timothy Libert
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Publication number: 20030198715Abstract: A breathable film involving at least one polymeric layer of 100% neutralized ionomer containing sufficient aliphatic, mono-functional organic acid salt to essentially triple the oxygen transmission value (OTV) and/or at least one polymeric layer of metallocene polyethylene (mPE) optional blended with low density polyethylene and preferably in combination with one or more outer layers of highly neutralized ionomer (e.g., Surlyn®). Such polymeric film and polymeric film structure has sufficient oxygen permeability, water vapor transmission, formability, and structural strength to be useful in wrapping food products requiring breathable films such as case ready meat, fish, sausage, fresh produce, and the like.Type: ApplicationFiled: April 16, 2003Publication date: October 23, 2003Inventors: Barry Alan Morris, Timothy A. Libert, Julius Uradnisheck