Patents by Inventor Kathleen Opper
Kathleen Opper 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: 20240117131Abstract: A polymeric film and process for making same, the film comprising residues of 5(6)-amino-2-(p-aminophenyl) benzimidazole, aromatic diamine, and aromatic diacid-chloride, in the form of polymer having a polymer chain including a salt of formula I, wherein C+ is a sodium, potassium, or calcium cation, the film having a thickness of about 1 to 50 micrometers, and a dielectric constant of 4.5 or greater at 2 GHz in the absence of any particulate additives that increase the dielectric constant of the film.Type: ApplicationFiled: September 14, 2023Publication date: April 11, 2024Inventors: Kathleen Opper, Christopher Seay, Kevin Kaurich, Jacob Pretko
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Publication number: 20240110036Abstract: A filled polymeric film comprising polymer and an inorganic dielectric constant-enhancing additive, the filled polymeric film having 12 to 75 percent by weight of said inorganic dielectric constant-enhancing additive, based on the total weight of the polymer and said inorganic constant-enhancing additive in the filled polymeric film; wherein the polymer comprises imidazole groups; and wherein the filled polymeric film has a filled film tenacity that is 70 to 100 percent of a neat film tenacity of a polymeric film having the same thickness made from the same polymer but without the said inorganic dielectric constant-enhancing additive.Type: ApplicationFiled: September 15, 2023Publication date: April 4, 2024Inventors: Kathleen Opper, Christopher Seay, Kevin Kaurich
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Publication number: 20240076477Abstract: The disclosure generally relates to poly alpha-1,3-glucan compositions and articles containing them. In particular interest is comprising poly alpha-1,3-glucan ester derivatives. The poly alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.Type: ApplicationFiled: August 1, 2023Publication date: March 7, 2024Inventors: ALICIA C. BRIEGEL, ROSS S. JOHNSON, VINDHYA MISHRA, KATHLEEN OPPER, SHALINI SAXENA
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Patent number: 11732110Abstract: The disclosure generally relates to poly alpha-1,3-glucan compositions and articles containing them. In particular interest is comprising poly alpha-1,3-glucan ester derivatives. The poly alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.Type: GrantFiled: June 10, 2020Date of Patent: August 22, 2023Assignee: NUTRITION & BIOSCIENCES USA 4, INC.Inventors: Alicia C. Briegel, Ross S. Johnson, Vindhya Mishra, Kathleen Opper, Shalini Saxena
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Publication number: 20230192905Abstract: The disclosure generally relates to poly_alpha-1,3-glucan compositions and articles containing them. In particular interest are compositions comprising poly_alpha-1,3-glucan ester derivatives. The poly_alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.Type: ApplicationFiled: November 20, 2017Publication date: June 22, 2023Inventors: Alicia C. Briegel, Ross S. Johnson, Vindhya Mishra, Kathleen Opper, Shasax Saxena
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Patent number: 11505682Abstract: Molded articles are disclosed herein, the molded article comprising a polysaccharide, wherein the polysaccharide comprises i) poly alpha-1,3-glucan; ii) poly alpha-1,3-1,6-glucan; iii) a graft copolymer that comprises (A) a backbone comprising dextran with a weight-average molecular weight (Mw) of at least about 100000 Daltons, and (B) poly alpha-1,3-glucan side chains comprising at least about 95% alpha-1,3-glucosidic linkages; or iv) a composition comprising a poly alpha-1,3-glucan ester compound as disclosed herein. Optionally, the molded articles can further comprise a plasticizer and/or starch. The molded articles can be useful as a container, a handle, packaging, a tray, a bottle, a cup, a sheet, a disposable food packaging item, an automotive part, a casing for an electronic device, or a toy.Type: GrantFiled: November 14, 2017Date of Patent: November 22, 2022Assignee: NUTRITION & BIOSCIENCES USA 4, INC.Inventors: Natnael Behabtu, Kathleen Opper, Marinella Bettine Van Leeuwen, Geraldus Gerardus Johannes Schennink, Karin Molenveld, Christian Peter Lenges
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Publication number: 20220267932Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.Type: ApplicationFiled: February 11, 2022Publication date: August 25, 2022Inventors: DOUGLAS J. ADELMAN, NATNAEL BEHABTU, ALICIA C. BRIEGEL, ROSS S. JOHNSON, CHRISTIAN PETER LENGES, KATHLEEN OPPER, ANDREAS JORGEN WEGO, CHRISTIAN HERBERT
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Patent number: 11248314Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.Type: GrantFiled: November 20, 2017Date of Patent: February 15, 2022Assignee: NUTRITION & BIOSCIENCES USA 4, INC.Inventors: Douglas J. Adelman, Natnael Behabtu, Alicia C. Briegel, Ross S. Johnson, Christian Peter Lenges, Kathleen Opper, Andreas Jürgen Wego, Christian Herbert
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Publication number: 20200308371Abstract: The disclosure generally relates to poly alpha-1,3-glucan compositions and articles containing them. In particular interest is comprising poly alpha-1,3-glucan ester derivatives. The poly alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.Type: ApplicationFiled: June 10, 2020Publication date: October 1, 2020Inventors: Alicia C. Briegel, Ross S. Johnson, Vindhya Mishra, Kathleen Opper, Shalini Saxena
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Publication number: 20200062931Abstract: Molded articles are disclosed herein, the molded article comprising a polysaccharide, wherein the polysaccharide comprises i) poly alpha-1,3-glucan; ii) poly alpha-1,3-1,6-glucan; iii) a graft copolymer that comprises (A) a backbone comprising dextran with a weight-average molecular weight (Mw) of at least about 100000 Daltons, and (B) poly alpha-1,3-glucan side chains comprising at least about 95% alpha-1,3-glucosidic linkages; or iv) a composition comprising a poly alpha-1,3-glucan ester compound as disclosed herein. Optionally, the molded articles can further comprise a plasticizer and/or starch. The molded articles can be useful as a container, a handle, packaging, a tray, a bottle, a cup, a sheet, a disposable food packaging item, an automotive part, a casing for an electronic device, or a toy.Type: ApplicationFiled: November 14, 2017Publication date: February 27, 2020Inventors: Natnael Behabtu, Kathleen Opper, Marinella Bettine Van Leeuwen, Geraldus Gerardus Johannes Schennink, Karin Molenveld, Christian Peter Lenges
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Publication number: 20190345267Abstract: A process is disclosed herein comprising the step of contacting an esterifying agent and a polysaccharide in the presence of a solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, wherein the polysaccharide ester composition comprises a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis. In one embodiment, the polysaccharide comprises poly alpha-1,3-glucan.Type: ApplicationFiled: November 20, 2017Publication date: November 14, 2019Inventors: Douglas J. Adelman, Natnael Behabtu, Alicia C. Briegel, Ross S. Johnson, Christian Peter Lenges, Kathleen Opper
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Publication number: 20190345642Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.Type: ApplicationFiled: November 20, 2017Publication date: November 14, 2019Inventors: Douglas J. Adelman, Natnael Behabtu, Alicia C. Briegel, Ross S. Johnson, Christian Peter Lenges, Kathleen Opper, Andreas Jürgen Wego, Christian Herbert
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Publication number: 20190225737Abstract: Disclosed herein are polyurethane polymers comprising at least one polyisocyanate, a polysaccharide comprising: poly alpha-1,3-glucan; a poly alpha-1,3-glucan ester compound as disclosed herein; poly alpha-1,3-1,6-glucan; water-insoluble alpha-(1,3-glucan) polymer having 90% or greater alpha-1,3-glycosidic linkages, less than 1% by weight of alpha-1,3,6-glycosidic branch points, and a number average degree of polymerization in the range of from 55 to 10,000; dextran; or a poly alpha-1,3-glucan ether compound as disclosed herein; and optionally, at least one polyol. Also disclosed are polyurethane compositions comprising the polyurethane polymer and a solvent, as well as polyurethane foams, adhesives, coatings, films, and coated fibrous substrates comprising the polyurethane polymer.Type: ApplicationFiled: July 20, 2017Publication date: July 25, 2019Inventors: Natnael Behabtu, Christian Peter Lenges, Tizazu H. Mekonnen, Kathleen Opper, Aisa Sendijarevic, Ibrahim Sendijarevic, Vahid Sendijarevic
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Patent number: 9365955Abstract: The present invention is a solution comprising poly(?(1?3) glucan) and an ionic liquid. The solution can further contain a non-solvent that is water or an ionic liquid. The solution is suitable for use as a spinning solution for the preparation of fibers of poly(?(1?3) glucan) without the requirement of first derivatizing the poly(?(1?3) glucan).Type: GrantFiled: December 21, 2012Date of Patent: June 14, 2016Assignee: EI DU PONT DE NEMOURS AND COMPANYInventor: Kathleen Opper
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Patent number: 9334584Abstract: This invention pertains to a novel processing for preparing fibers from poly(?(1?3)glucan). The fibers prepared according to the invention, have “cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The process comprises solution spinning a 5-20% solids concentration of poly(?(1?3)glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%, and coagulating the spun fiber in an acid coagulation liquid.Type: GrantFiled: December 21, 2011Date of Patent: May 10, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: John P. O'Brien, Kathleen Opper
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Patent number: 9212301Abstract: This invention pertains to a novel solution composition useful for preparing fibers from poly(?(1?3) glucan). The fibers prepared according to the invention, have “cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The solution comprises a 5-20% solids concentration of poly(?(1?3) glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%.Type: GrantFiled: December 21, 2011Date of Patent: December 15, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: John P. O'Brien, Kathleen Opper
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Patent number: 9175423Abstract: This invention pertains to a novel process for preparing fibers from poly(?(1?3) glucan). The fibers prepared according to the invention, have “cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The process comprises solution spinning from a novel solution of poly(?(1?3) glucan) in a mixture of water and N-methylmorpholine-N-oxide followed by coagulation in a liquid coagulant that comprises a liquid that is not water.Type: GrantFiled: October 5, 2012Date of Patent: November 3, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: John P O'Brien, Kathleen Opper
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Publication number: 20130161861Abstract: This invention pertains to a novel processing for preparing fibers from poly(?(1?3)glucan). The fibers prepared according to the invention, have “cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The process comprises solution spinning a 5-20% solids concentration of poly(?(1?3)glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%, and coagulating the spun fiber in an acid coagulation liquid.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: John P. O'Brien, Kathleen Opper
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Publication number: 20130161562Abstract: This invention pertains to a novel solution composition useful for preparing fibers from poly(?(1?3) glucan). The fibers prepared according to the invention, have“cotton-like” properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The solution comprises a 5-20% solids concentration of poly(?(1?3) glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: John P. O'Brien, Kathleen Opper