Patents by Inventor Thomas H. Epps, III

Thomas H. Epps, III 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).

  • Patent number: 11732141
    Abstract: Dimethoxyphenol-based monomers containing polymerizable functional groups such as [meth]acrylate groups are useful for the preparation of polymers, wherein one or more dimethoxyphenyl moieties are part of side chains pendant to the backbones of the polymers. The polymers thereby obtained may have different, improved properties, such as higher glass transition temperatures, thermal stability and solvent resistance, as compared to polymers based on other types of lignin-derived monomers.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: August 22, 2023
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Angela L. Holmberg, Kaleigh H. Reno, Thomas H. Epps, III
  • Publication number: 20230113164
    Abstract: Disclosed herein is a bio-based copolymer comprising in polymerized form (i) at least one polymerizable bio-based monomer containing one phenolic hydroxyl group which has been derivatized to provide at least one polymerizable functional group which is an ethylenically unsaturated functional group (such as a [meth]acrylate group), where the precursors of the polymerizable bio-based monomers are derived from raw lignin-containing biomass, and (ii) at least one ion-conducting co-monomer other than the bio-based monomer. Also disclosed herein are binders comprising the bio-based copolymer, electrodes comprising the binder, polymer electrolytes comprising the bio-based copolymer and an electrochemical device comprising an electrode in electrical contact with a polymer electrolyte, wherein at least one of the electrode and the polymer electrolyte comprises the bio-based copolymer.
    Type: Application
    Filed: November 4, 2022
    Publication date: April 13, 2023
    Applicant: University of Delaware
    Inventors: Thomas H. Epps, III, Angela L. Holmberg, Kaleigh H. Nicastro, Shu Wang, Basudeb Saha, Li Shuai, Dionisios G. Vlachos, Melody A. Morris
  • Patent number: 11525024
    Abstract: Disclosed herein is a method of making polymerizable bio-based monomers containing one phenolic hydroxyl group which has been derivatized to provide at least one polymerizable functional group which is an ethylenically unsaturated functional group (such as a [meth]acrylate group), where the precursors of the polymerizable bio-based monomers are derived from raw lignin-containing biomass. Also disclosed herein are bio-based copolymers prepared from such bio-based monomers and a co-monomer, and methods of making and using such bio-based copolymers. In particular, the bio-based copolymers can be used as pressure sensitive adhesives, binders, and polymer electrolytes.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: December 13, 2022
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Thomas H. Epps, III, Angela L. Holmberg, Kaleigh H. Nicastro, Shu Wang, Basudeb Saha, Li Shuai, Dionisios G. Vlachos
  • Patent number: 11504673
    Abstract: Disclosed herein are multi-layer structures comprising a first composite layer disposed over a second composite layer, wherein the first composite layer contains a first active material dispersed in a first polymer containing an elastomeric polymer and the second composite layer contains a second polymer which may have a second active material dispersed therein, wherein the first active material chemically or physically interacts with at least one toxic chemical and is selected from the group consisting of metal-organic frameworks (MOFs), metal oxides, metal hydroxides, zeolites, and combinations thereof, and wherein the active material and the second active material (if present) are the same as or different from each other, and the first polymer and second polymer are the same as or different from each other, subject to the proviso that the first composite layer and the second composite layer compositionally differ from each other in at least one respect.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: November 22, 2022
    Assignees: GOVERNMENT OF THE UNITED STATES, AS REPRESENTED BY THE DEFENSE THREAT REDUCTION AGENCY, GOVERNMENT OF THE UNITED STATES, AS REPRESENTED BY THE SECRETARY OF THE ARMY, UNIVERSITY OF DELAWARE
    Inventors: Gregory W. Peterson, Annie Lu, Thomas H. Epps, III, Jean S. Epps
  • Publication number: 20220324779
    Abstract: Disclosed herein are systems and methods of depolymerizing a lignin component of a lignin-containing material. The method comprising contacting the lignin-containing material with a solvent and optionally a catalyst at a temperature in the range of 180-300° C. and at a maximum operating pressure of less than 10 barG during the depolymerization of the lignin component of the material and collecting at least one volatile stream comprising one or more depolymerized lignin products. In an embodiment, the step of contacting is carried out in a reactive distillation reactor, and the step of collecting comprises concurrently collecting at least one volatile stream via distillation apparatus connected to the reactive distillation reactor, at least one of the one or more depolymerized lignin products comprises a substituted phenol having the following general formula: (I) wherein R1 is H, methyl, ethyl, n-propyl, propenyl, or allyl, and R2 and R3 are independently selected from H or methoxy group.
    Type: Application
    Filed: August 14, 2020
    Publication date: October 13, 2022
    Inventors: Elvis O. Ebikade, Eric R. Gottlieb, Robert M. O'Dea, Thomas H. Epps, III, Dionisios Vlachos
  • Patent number: 11459342
    Abstract: A composition having the structure of formula I: [R—Ar—(COOH)2]x[Ar—(COOH)3]2-xM32+??(I) is provided where M is Mn, Cu, Co, Fe, Zn, Cd, Ni, or Pt; R is a bromine, nitro, a primary amine, C1-C4 alkyl secondary amine, C1-C4 alkyl oxy, Br—(C1-C4 alkyl), NO2—(C1-C4 alkyl), a mercaptan, and reaction products of any of the aforementioned with acyl chlorides of the formulas: CH3(CH2)mC(O)Cl, or CH3(CH(C1-C4 alkyl)CH2)mC(O)Cl, or CH3(CH2)m-Ph-(CH2)pC(O)Cl, where Ph is a C6 phenyl or C6 phenyl with one or more hydrogens replaced with F, C1-C4 fluoroalkyl, or C1-C4 perfluoroalkyl; m is independently in each occurrence an integer of 0 to 12 inclusive; p is an integer of 0 to 36 inclusive, to form an amide, a thioamide, or an ester; Ar is a 1,3,5-modified phenyl, and 1.4>x>0. A process of synthesis thereof and the use to chemically modify a gaseous reactant are also provided.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: October 4, 2022
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Gregory W Peterson, Thomas H Epps, III
  • Publication number: 20220251300
    Abstract: Disclosed herein are bio-based polysulfones, and in particular, bisguaiacol-based PSfs synthesized from (i) at least one polymerizable lignin-based monomer having a structure corresponding to formula (I) wherein each R1 is independently either an H or a methyl group, wherein R2, R3, and R4 are each individually selected from an H or a methoxy group, and (ii) at least one polymerizable 4,4?-dihalophenyl sulfone as a comonomer.
    Type: Application
    Filed: June 11, 2020
    Publication date: August 11, 2022
    Applicants: University of Delaware, Arizona Board of Regents on behalf of Arizona State University
    Inventors: Thomas H. EPPS, III, LaShanda T. J. Korley, Matthew D. Green, Jignesh S. Mahajan, Hoda Shokrollahzadeh Behbahani
  • Publication number: 20210129086
    Abstract: Disclosed herein are multi-layer structures comprising a first composite layer disposed over a second composite layer, wherein the first composite layer contains a first active material dispersed in a first polymer containing an elastomeric polymer and the second composite layer contains a second polymer which may have a second active material dispersed therein, wherein the first active material chemically or physically interacts with at least one toxic chemical and is selected from the group consisting of metal-organic frameworks (MOFs), metal oxides, metal hydroxides, zeolites, and combinations thereof, and wherein the active material and the second active material (if present) are the same as or different from each other, and the first polymer and second polymer are the same as or different from each other, subject to the proviso that the first composite layer and the second composite layer compositionally differ from each other in at least one respect.
    Type: Application
    Filed: August 15, 2018
    Publication date: May 6, 2021
    Applicants: University of Delaware, Government of the United States, as Represented by the Defense Threat Reduction Agency, Government of the United States, as Represented by the Secretary of the Army
    Inventors: Gregory W. Peterson, Annie Lu, Thomas H. Epps, III, Jean S. Epps
  • Patent number: 10968301
    Abstract: The present disclosure is directed to stress-responsive compositions comprising (1) at least one (co)polymer comprising at least one mechanophore comprising at least one thiocarbonylthio functional group or derivative thereof and (2) at least one compound comprising at least one functional group capable of reacting with a free radical, The present disclosure is also directed to articles, coatings, and 3D printing binders comprising such stress-responsive compositions, as well as to processes of imparting the abilities of forming and maintaining protective barriers and mechanical self-healing to such articles, coatings, and 3D printing binders by incorporating such stress-responsive compositions therein.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: April 6, 2021
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Melissa B. Gordon, Christopher J. Kloxin, Norman J. Wagner, Thomas H. Epps, III, Grant Alexander Knappe, Shu Wang
  • Patent number: 10828664
    Abstract: A coating head includes a coating device and at least a first flexible blade that is capable of being shaped into contact with a solvent-containing film on a substrate upon pressing the first flexible blade against the film, thereby providing contact between the blade and the film over a contact distance when the coating head is drawn over the substrate. The coating device and the blade are separated by a spacing distance such that partial loss of solvent occurs from a starting film formed on the substrate by the coating device as the coating head is drawn over the substrate, the partial solvent loss forming the solvent-containing film. A method of producing a film having a hierarchical structure includes drawing a coating head across a substrate to form on the substrate via the coating device a starting film including a solvent and a material for forming the hierarchical structure.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: November 10, 2020
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Cameron Shelton, Thomas H. Epps, III
  • Publication number: 20190177462
    Abstract: Dimethoxyphenol-based monomers containing polymerizable functional groups such as [meth]acrylate groups are useful for the preparation of polymers, wherein one or more dimethoxyphenyl moieties are part of side chains pendant to the backbones of the polymers. The polymers thereby obtained may have different, improved properties, such as higher glass transition temperatures, thermal stability and solvent resistance, as compared to polymers based on other types of lignin-derived monomers.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 13, 2019
    Applicant: University of Delaware
    Inventors: Angela L. Holmberg, Kaleigh H. Reno, Thomas H. Epps, III
  • Publication number: 20190169340
    Abstract: The present disclosure is directed to stress-responsive compositions comprising (1) at least one (co)polymer comprising at least one mechanophore comprising at least one thiocarbonylthio functional group or derivative thereof and (2) at least one compound comprising at least one functional group capable of reacting with a free radical, The present disclosure is also directed to articles, coatings, and 3D printing binders comprising such stress-responsive compositions, as well as to processes of imparting the abilities of forming and maintaining protective barriers and mechanical self-healing to such articles, coatings, and 3D printing binders by incorporating such stress-responsive compositions therein.
    Type: Application
    Filed: August 17, 2017
    Publication date: June 6, 2019
    Applicant: University of Delaware
    Inventors: Melissa B. Gordon, Christopher J. Kloxin, Norman J. Wagner, Thomas H. Epps, III, Grant Alexander Knappe, Shu Wang
  • Publication number: 20190144590
    Abstract: Disclosed herein is a method of making polymerizable bio-based monomers containing one phenolic hydroxyl group which has been derivatized to provide at least one polymerizable functional group which is an ethylenically unsaturated functional group (such as a [meth]acrylate group), where the precursors of the polymerizable bio-based monomers are derived from raw lignin-containing biomass. Also disclosed herein are bio-based copolymers prepared from such bio-based monomers and a co-monomer, and methods of making and using such bio-based copolymers. In particular, the bio-based copolymers can be used as pressure sensitive adhesives, binders, and polymer electrolytes.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Applicant: University of Delaware
    Inventors: Thomas H. Epps, III, Angela L. Holmberg, Kaleigh H. Nicastro, Shu Wang, Basudeb Saha, Li Shuai, Dionisios G. VLACHOS, Melody A. Morris
  • Patent number: 10253131
    Abstract: Dimethoxyphenol-based monomers containing polymerizable functional groups such as [meth]acrylate groups are useful for the preparation of polymers, wherein one or more dimethoxyphenyl moieties are part of side chains pendant to the backbones of the polymers. The polymers thereby obtained may have different, improved properties, such as higher glass transition temperatures, thermal stability and solvent resistance, as compared to polymers based on other types of lignin-derived monomers.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 9, 2019
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Angela L. Holmberg, Kaleigh H. Reno, Thomas H. Epps, III
  • Publication number: 20180326451
    Abstract: A coating head includes a coating device and at least a first flexible blade that is capable of being shaped into contact with a solvent-containing film on a substrate upon pressing the first flexible blade against the film, thereby providing contact between the blade and the film over a contact distance when the coating head is drawn over the substrate. The coating device and the blade are separated by a spacing distance such that partial loss of solvent occurs from a starting film formed on the substrate by the coating device as the coating head is drawn over the substrate, the partial solvent loss forming the solvent-containing film. A method of producing a film having a hierarchical structure includes drawing a coating head across a substrate to form on the substrate via the coating device a starting film including a solvent and a material for forming the hierarchical structure.
    Type: Application
    Filed: December 8, 2016
    Publication date: November 15, 2018
    Applicant: University of Delaware
    Inventors: Cameron SHELTON, Thomas H. EPPS, III
  • Patent number: 9935332
    Abstract: Copolymers useful as components of polymer electrolytes are provided in which the copolymer comprises at least one block sequence represented by formula (I): A—(T)—B ??(I) wherein A is a vinyl aromatic block, T is a tapered copolymer region copolymerized from a vinyl aromatic monomer and an oligo(oxyalkylene) acrylate monomer and B is an oligo(oxyalkylene) acrylate block.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: April 3, 2018
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: Thomas H. Epps, III, Wei-Fan Kuan
  • Publication number: 20170015775
    Abstract: Dimethoxyphenol-based monomers containing polymerizable functional groups such as [meth]acrylate groups are useful for the preparation of polymers, wherein one or more dimethoxyphenyl moieties are part of side chains pendant to the backbones of the polymers. The polymers thereby obtained may have different, improved properties, such as higher glass transition temperatures, thermal stability and solvent resistance, as compared to polymers based on other types of lignin-derived monomers.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 19, 2017
    Applicant: University of Delaware
    Inventors: Angela H. HOLMBERG, Kaleigh H. RENO, Thomas H. EPPS, III
  • Patent number: 9512249
    Abstract: The present invention pertains to bio-based block polymers synthesized from functionalized lignin-based molecules (A-monomer) and functionalized fatty acids or fatty alcohols (B-monomer) derived from plant or animal oils, waxes or fats. The block polymers can be synthesized via numerous polymerization techniques, such as reversible addition-fragmentation chain transfer (RAFT). Most importantly, this class of bio-based block polymers shows promise as providing sustainable yet scalable and tunable thermoplastic elastomers and pressure-sensitive adhesives, among other applications.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 6, 2016
    Assignee: University of Delaware
    Inventors: Angela L. Holmberg, Joseph F. Stanzione, Richard Wool, Thomas H. Epps, III
  • Publication number: 20150197585
    Abstract: Copolymers useful as components of polymer electrolytes are provided in which the copolymer comprises at least one block sequence represented by formula (I): A-(T)-B(I) wherein A is a vinyl aromatic block, T is a tapered copolymer region copolymerized from a vinyl aromatic monomer and an oligo(oxyalkylene) acrylate monomer and B is an oligo(oxyalkylene) acrylate block.
    Type: Application
    Filed: January 8, 2015
    Publication date: July 16, 2015
    Applicant: University of Delaware
    Inventors: Thomas H. Epps, III, Wei-Fan Kuan
  • Publication number: 20140275435
    Abstract: The present invention pertains to bio-based block polymers synthesized from functionalized lignin-based molecules (A-monomer) and functionalized fatty acids or fatty alcohols (B-monomer) derived from plant or animal oils, waxes or fats. The block polymers can be synthesized via numerous polymerization techniques, such as reversible addition-fragmentation chain transfer (RAFT). Most importantly, this class of bio-based block polymers shows promise as providing sustainable yet scalable and tunable thermoplastic elastomers and pressure-sensitive adhesives, among other applications.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: University of Delaware
    Inventors: Thomas H. Epps, III, Angela L. Holmberg, Joseph F. Stanzione, Richard Wool