Patents by Inventor David B. Thomas

David B. Thomas 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: 12157797
    Abstract: The invention relates to a side-chain functionalized copolymer (P1) and to the process for preparing the side-chain functionalized copolymer (P1). The present invention also relates to the use of the copolymer (P1) in the preparation of a membrane, a composite material or a coating.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: December 3, 2024
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Kamlesh Nair, David B. Thomas
  • Publication number: 20240359145
    Abstract: A purification method for a biological fluid comprising at least a filtration step through a membrane obtained from a sulfone polymer (PSI) derived from bio-based feed-stocks. In particular the polymer (PSI) comprises more than 50% moles recurring units (RPSI) comprising sugar moieties selected from the group consisting of those of formulae (E?-I) to (E?-III): A membrane free from pore-forming agents comprising at least one sulfone polymer (PSI) and a method for preparing such a membrane.
    Type: Application
    Filed: July 5, 2024
    Publication date: October 31, 2024
    Inventors: Emanuele DI NICOLO', Pasquale CAMPANELLI, David B. THOMAS
  • Publication number: 20240150531
    Abstract: The present invention relates to hard optically transparent films suitable as protective films for displays, in particular flexible OLED displays.
    Type: Application
    Filed: February 18, 2022
    Publication date: May 9, 2024
    Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Nicolas Treat, Joel Pollino, Ryan Mondschein, David B. Thomas
  • Patent number: 11708457
    Abstract: The invention pertains to certain copolymers (PEDEK/PEEK), comprising a majority of “PEDEK”-type recurring units, which, thanks to the predominance of PEDEK-type units, their structural homogeneity and regularity, and absence of chlorinated end groups, possess a suitable molecular structure and crystallization behaviour so as to deliver improved mechanical properties and outstanding chemical resistance, and which are useful in numerous fields of endeavours, including notably in the oil&gas industry, and more specifically for the manufacture of parts used in oil and gas extraction systems.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 25, 2023
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Chantal Louis, David B. Thomas, Mohammad Jamal El-Hibri, Ryan Hammonds
  • Patent number: 11654615
    Abstract: A method for manufacturing a three-dimensional (3D) object with an additive manufacturing system, comprising a step consisting in printing layers of the 3D object from the part material comprising a polymeric component comprising, based on the total weight of the polymeric component: from 5 to 95 wt. % of at least one polymer (P1) comprising at least 50 mol. % of recurring units (R1) consisting of an arylene group comprising at least one benzene ring, each recurring unit (R1) being bound to each other through C—C bonds, wherein the recurring units (R1) are such that, based on the total number of moles of recurring units (R1):less than 90 mol. % are rigid rod-forming arylene units (R1-a), and at least 10 mol. % are kink-forming arylene units (R1-b), and from 5 to 95 wt. % of at least one polymer (P2), having a glass transition temperature (Tg) between 140° C. and 265° C., and no melting peak, as measured by differential scanning calorimetry (DSC) according to ASTM D3418.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: May 23, 2023
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Stéphane Jeol, Nancy J. Singletary, Ryan Hammonds, Hai Van, David B. Thomas
  • Patent number: 11603438
    Abstract: Methods of cross-linking or chain extending a polymeric material including a silane-modified poly(arylene ether) polymer (Si-PAE) in a shaped article include heating the shaped article from a temperature T1 to a temperature T2>T1, while maintaining the temperature at which the shaped article is heated within a specified range based on the increasing Tg of the polymeric material during the heating. Shaped articles cross-linked or chain extended by the methods are also described.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: March 14, 2023
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Stéphane Jeol, David B. Thomas
  • Patent number: 11591451
    Abstract: A polymer composition includes at least one poly(aryl ether ketone) (PAEK) component and at least one low molecular weight aromatic compound. A polymer metal junction including the polymer composition and a method of making a polymer metal junction are also described.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: February 28, 2023
    Assignee: SOLVAY SPECIALTY POLYMERS, LLC
    Inventors: Mohammad Jamal El-Hibri, Chantal Louis, David B. Thomas
  • Publication number: 20230001362
    Abstract: The present invention relates to a membrane for purifying a biological fluid, comprising at least one poly(aryl ether sulfone) (PAES) polymer based on one specific dihydroxy monomer. The present invention also relates to a purification method for a biological fluid comprising at least a filtration step through this membrane, as well as to the polymer solution for preparing such membrane, comprising this PAES.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 5, 2023
    Inventors: Atul BHATNAGAR, David B. THOMAS
  • Publication number: 20220396668
    Abstract: The present invention relates to a process for preparing a polysulfone (PSU) polymer having a low yellowness index (YI). The present disclosure also relates to a PSU obtained from this process, as well as to articles incorporating this PSU.
    Type: Application
    Filed: November 17, 2020
    Publication date: December 15, 2022
    Inventors: Atul BHATNAGAR, Gregory GOSCHY, Chantal LOUIS, David B. THOMAS
  • Publication number: 20220297066
    Abstract: The invention pertains to a purification method for a biological fluid comprising at least a filtration step through a membrane obtained from a sulfone polymer [polymer (PSI)] derived from bio-based feed-stocks. In particular the PSI polymer comprises more than 50% moles recurring units (RPSI) comprising sugar moieties selected from the group consisting of those of formulae (E?-1) to (E?-3): The invention further relates to polymer solutions and polymer membranes comprising at least one polymer (PSI) and that are free from pore-forming agents.
    Type: Application
    Filed: September 7, 2018
    Publication date: September 22, 2022
    Inventors: Emanuele DI NICOLO', Pasquale CAMPANELLI, David B. THOMAS
  • Publication number: 20220213270
    Abstract: The present invention relates to a poly(arylene sulfide) (PAS), comprising recurring units p, q and r according of formula (I) wherein np, nq and nr are respectively the mole % of each recurring units p, q and r; recurring units p, q and r are arranged in blocks, in alternation or randomly; 2?(nq+nr)/(np+nq+nr)?9; nq is ?0% and nr is ?0%; j is zero or an integer varying between 1 and 4; R1 is selected from the group consisting of halogen atoms, C1-C12 alkyl groups, C7-C24 alkylaryl groups, C7-C24 aralkyl groups, C6-C24 arylene groups, C1-C12 alkoxy groups, and C6-C18 aryloxy groups.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 7, 2022
    Inventors: Stéphane JEOL, Hong CHEN, Brittany GILKENSON, David B. THOMAS, Philippe MARION, Matthieu CORBET, Thomas GALEANDRO-DIAMANT
  • Publication number: 20220162380
    Abstract: The invention relates to a side-chain functionalized copolymer (P1) and to the process for preparing the side-chain functionalized copolymer (P1). The present invention also relates to the use of the copolymer (P1) in the preparation of a membrane, a composite material or a coating.
    Type: Application
    Filed: March 12, 2020
    Publication date: May 26, 2022
    Inventors: Kamlesh NAIR, David B. THOMAS
  • Publication number: 20210380763
    Abstract: The invention pertains to a relates to a copolymer (P1) of poly(aryl ether sulfones) (PAES) and polydimethylsiloxane (PDMS) and to the process for preparing the copolymer (P1) by melt-hydrosilylation.
    Type: Application
    Filed: October 21, 2019
    Publication date: December 9, 2021
    Inventors: Kamlesh NAIR, Joel POLLINO, Stéphane JEOL, David B. THOMAS
  • Publication number: 20210069963
    Abstract: A method for manufacturing a three-dimensional (3D) object with an additive manufacturing system, comprising a step consisting in printing layers of the 3D object from the part material comprising a polymeric component comprising, based on the total weight of the polymeric component: from 5 to 95 wt. % of at least one polymer (P1) comprising at least 50 mol. % of recurring units (R1) consisting of an arylene group comprising at least one benzene ring, each recurring unit (R1) being bound to each other through C—C bonds, wherein the recurring units (R1) are such that, based on the total number of moles of recurring units (R1):less than 90 mol. % are rigid rod-forming arylene units (R1-a), and at least 10 mol. % are kink-forming arylene units (R1-b), and from 5 to 95 wt. % of at least one polymer (P2), having a glass transition temperature (Tg) between 140° C. and 265° C., and no melting peak, as measured by differential scanning calorimetry (DSC) according to ASTM D3418.
    Type: Application
    Filed: December 19, 2018
    Publication date: March 11, 2021
    Inventors: Stéphane JEOL, Nancy J. SINGLETARY, Ryan HAMMONDS, Hai VAN, David B. THOMAS
  • Publication number: 20200181360
    Abstract: A polymer composition includes at least one poly(aryl ether ketone) (PAEK) component and at least one low molecular weight aromatic compound. A polymer metal junction including the polymer composition and a method of making a polymer metal junction are also described.
    Type: Application
    Filed: August 1, 2017
    Publication date: June 11, 2020
    Inventors: Mohammad Jamal EL-HIBRI, Chantal LOUIS, David B. THOMAS
  • Patent number: 10662328
    Abstract: A polymer composition includes components selected from: (i) at least one a poly(aryl ether ketone) (PAEK), (ii) a poly(ether sulfone) (PES), (iii) a reactive poly(ether sulfone) (rPES), (iv) a reactive poly(aryl ether ketone) (rPAEK), (v) an acid component, and (vi) at least one alkali metal carbonate. Preferably, the polymer composition is free or substantially free of solvent. A method includes melt mixing the components of the polymer composition.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 26, 2020
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Stéphane Jeol, David B. Thomas, Maryam Momtaz, Chantal Louis
  • Publication number: 20190322804
    Abstract: The invention pertains to certain copolymers (PEDEK/PEEK), comprising a majority of “PEDEK”-type recurring units, which, thanks to the predominance of PEDEK-type units, their structural homogeneity and regularity, and absence of chlorinated end groups, possess a suitable molecular structure and crystallization behaviour so as to deliver improved mechanical properties and outstanding chemical resistance, and which are useful in numerous fields of endeavours, including notably in the oil&gas industry, and more specifically for the manufacture of parts used in oil and gas extraction systems.
    Type: Application
    Filed: October 24, 2017
    Publication date: October 24, 2019
    Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Chantal LOUIS, David B. THOMAS, Mohammad Jamal EL-HIBRI, Ryan HAMMONDS
  • Publication number: 20190263982
    Abstract: Methods of cross-linking or chain extending a polymeric material including a silane-modified poly(arylene ether) polymer (Si-PAE) in a shaped article include heating the shaped article from a temperature T1 to a temperature T2>T1, while maintaining the temperature at which the shaped article is heated within a specified range based on the increasing Tg of the polymeric material during the heating. Shaped articles cross-linked or chain extended by the methods are also described.
    Type: Application
    Filed: October 16, 2017
    Publication date: August 29, 2019
    Inventors: Stéphane JEOL, David B. THOMAS
  • Publication number: 20190127582
    Abstract: A polymer composition includes components selected from: (i) at least one a poly(aryl ether ketone) (PAEK), (ii) a poly(ether sulfone) (PES), (iii) a reactive poly(ether sulfone) (rPES), (iv) a reactive poly(aryl ether ketone) (rPAEK), (v) an acid component, and (vi) at least one alkali metal carbonate. Preferably, the polymer composition is free or substantially free of solvent. A method includes melt mixing the components of the polymer composition.
    Type: Application
    Filed: April 28, 2017
    Publication date: May 2, 2019
    Inventors: Stéphane JEOL, David B. THOMAS, Maryam MOMTAZ, Chantal LOUIS
  • Publication number: 20190055360
    Abstract: The invention pertains to a polyarylether sulfone polymer [polymer (PAES)] incorporating recurring units derived from well-defined amount of bi- or poly-functional monomers having identical functionalities in each of their reactive groups in a chain of units derived from of a monohalo-monohydroxyl arylsulfone monomer comprising groups of formula (A), free from hydroxyl groups which are bound to a phenyl ring comprising an activating —SO2— group in para-position, while comprising an activated aromatic halogen bound to a phenyl ring comprising an activating —SO2— group in para-position, having improved balance between mechanical properties and viscosity in the molten state, and endowed by lower polydispersity indexes with respect to materials of the prior art, to a method for making the same, to polymer compositions comprising the same, and to shaped articles therefrom.
    Type: Application
    Filed: February 22, 2017
    Publication date: February 21, 2019
    Inventors: Stéphane JEOL, David B. THOMAS