Membrane Or Process Of Preparing Patents (Class 521/27)
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Patent number: 10249901Abstract: An organic-inorganic composite anion exchange membrane for non-aqueous redox flow batteries, which contains a polyvinylidene fluoride polymer, and a method for preparing the same are disclosed.Type: GrantFiled: December 30, 2014Date of Patent: April 2, 2019Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Seung-Hyeon Moon, Sung-Hee Shin, Yekyung Kim, Ki Won Sung
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Patent number: 10199692Abstract: Proton-conducting gel electrolytes with acid immobilized within a covalently cross-linked polymer network and composites containing the gel electrolytes provide low ionic resistance, minimize acid stratification, and prevent dendrite growth. The gel electrolytes can be formed from monomers dissolved in concentrated sulfuric acid and subsequently covalently cross-linked between the battery electrodes, or the covalently cross-linked gel electrolytes can be formed in water and subsequently exchanged into sulfuric acid. The mechanical properties of these gels can often be enhanced with the addition of silica powder, silica fiber, or other additives. In some cases, the covalently cross-linked gel electrolytes are formed in the presence of a conventional silica-filled polyethylene separator or within a low density fiber mat to provide mechanical reinforcement and controlled spacing between the battery electrodes.Type: GrantFiled: November 15, 2016Date of Patent: February 5, 2019Assignee: AMTEK RESEARCH INTERNATIONAL LLCInventors: Jungseung Kim, Robert R. Waterhouse, Richard W. Pekala, Eric B. Hostetler
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Patent number: 10179189Abstract: Methods to produce thermoforms from P4HB homopolymer and blends thereof have been developed. These thermoforms are produced from films and sheets including P4HB, wherein the intrinsic viscosity of the P4HB is less than 3.5 dl/g, but greater than 0.35 dl/g, and the thermoforms are produced at a temperature equal to or greater than the softening point of P4HB, and more preferably at a temperature higher than the melting point of P4HB. A preferred embodiment includes a P4HB thermoform wherein a film or sheet including a P4HB polymer is thermoformed at a temperature between its melting point and 150° C. In a particularly preferred embodiment the thermoform is a laminate made from a P4HB film and a P4HB mesh.Type: GrantFiled: May 19, 2017Date of Patent: January 15, 2019Assignee: Tepha, Inc.Inventors: Matthew Bernasconi, Dennis Connelly, Said Rizk, David P. Martin, Simon F. Williams
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Patent number: 10122001Abstract: The present invention is directed to lithium ion transport media for use in separators in lithium ion batteries, and the membranes, separators, and devices derived therefrom.Type: GrantFiled: October 27, 2017Date of Patent: November 6, 2018Assignees: Drexel University, The Trustees of the University of PennsylvaniaInventors: Yossef A. Elabd, Karen I. Winey, Yuesheng Ye, Jae-Hong Choi, Tsen-Shan Sharon Sharick
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Patent number: 10053534Abstract: The present invention relates to functionalized polymers including a poly(phenylene) structure. The structure can include any useful modifications, such as the inclusion of one or more reactive handles having an aryl group. Methods and uses of such structures and polymers are also described herein.Type: GrantFiled: January 4, 2017Date of Patent: August 21, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventor: Cy Fujimoto
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Patent number: 10050294Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.Type: GrantFiled: April 29, 2014Date of Patent: August 14, 2018Assignee: LG CHEM, LTD.Inventors: Young Sun Park, Minkyu Min, Hyuk Kim, Seong Ho Choi, Sangwoo Lee, Doyoung Kim
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Patent number: 10005886Abstract: Described herein are stable hydroxide ion-exchange polymers. The polymers include ionenes, which are polymers that contain ionic amines in the backbone. The polymers are alcohol-soluble and water-insoluble. The polymers have a water uptake and an ionic conductivity that are correlated to a degree of N-substitution. Methods of forming the polymers and membranes including the polymers are also provided. The polymers are suitable, for example, for use as ionomers in catalyst layers for fuel cells and electrolyzers.Type: GrantFiled: April 15, 2015Date of Patent: June 26, 2018Assignee: Simon Fraser UniversityInventors: Steven Holdcroft, Andrew Wright
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Patent number: 9962691Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.Type: GrantFiled: February 22, 2016Date of Patent: May 8, 2018Assignee: Natrix Separations Inc.Inventors: Amro Ragheb, Gary Skarja
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Patent number: 9914847Abstract: A resin composition for forming a phase-separated structure, including: a block copolymer, and an ion liquid containing a compound (IL) having a cation moiety and an anion moiety, the energy of the LUMO of the cation moiety being ?4.5 eV or more, and the energy difference between the LUMO and the HOMO of the cation moiety being 10.0 ev or more, or the Log P value of the anion moiety being 1 to 3.Type: GrantFiled: June 17, 2016Date of Patent: March 13, 2018Assignees: TOKYO OHKA KOGYO CO., LTD., THE UNIVERSITY OF CHICAGOInventors: Akiya Kawaue, Takehiro Seshimo, Takaya Maehashi, Tasuku Matsumiya, Ken Miyagi, Hitoshi Yamano, Xuanxuan Chen, Paul Franklin Nealey
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Patent number: 9899685Abstract: One embodiment includes a method comprising the steps of providing a first dry catalyst coated gas diffusion media layer, depositing a wet first proton exchange membrane layer over the first catalyst coated gas diffusion media layer to form a first proton exchange membrane layer; providing a second dry catalyst coated gas diffusion media layer; contacting the second dry catalyst coated gas diffusion media layer with the first proton exchange membrane layer; and hot pressing together the first and second dry catalyst coated gas diffusion media layers with the wet proton exchange membrane layer therebetween.Type: GrantFiled: March 14, 2017Date of Patent: February 20, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Matthew J Beutel, Timothy J Fuller
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Patent number: 9834623Abstract: A crosslinked copolymer is provided, which includes a copolymer crosslinked by a crosslinking agent. The copolymer is copolymerized of (a) styrene-based monomer, (b) monomer having conjugated double bonds or acrylate ester monomer, and (c) ammonium-containing heterocyclic monomer. The crosslinking agent is (d) or the product of the reaction between and (e) or a combination thereof. Z is wherein each R1 is independently H or C1-4 alkyl group, each R2 is independently H or C1-4 alkyl group, R3 is single bond, —O—, —S—, —CH2—, or —NH—. n is a positive integer. x is 1 to 12, y is 1 to 5, and z is 1 to 5.Type: GrantFiled: December 22, 2016Date of Patent: December 5, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hsuan-Wei Lee, Li-Duan Tsai, Chiu-Hun Su, Chiu-Tung Wang, Cheng-Hsiu Tsai
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Patent number: 9812725Abstract: A membrane obtainable by A) mixing: (vii) aromatic tetraamino compounds and (viii) aromatic carboxylic acids or esters thereof which contain at least two acid groups per carboxylic acid monomer, or (ix) aromatic and/or heteroaromatic diaminocarboxylic acids, in polyphosphoric acid to form a solution and/or dispersion B) heating the mixture from step A), and polymerizing until an intrinsic viscosity of at least 0.8 dl/g, is obtained for the polymer being formed, C) adding polyazole polymers, D) heating the mixture from step C), E) applying a membrane layer using the mixture according to step D) on a carrier or an electrode, F) treating the membrane formed in the presence of water and/or moisture, G) removing the membrane from the carrier; wherein the content of all polyazole polymers in the membrane is between 5% to 25% by weight and wherein the membrane has a Young Modulus is at least 2.0 MPa.Type: GrantFiled: January 16, 2013Date of Patent: November 7, 2017Assignee: BASF SEInventors: Brian Benicewicz, Sigmar Bräuninger, Gordon Calundann, Guoqing Qian
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Patent number: 9806314Abstract: The present invention is directed to compositions useful for use in separators for use in lithium ion batteries, and membranes, separators, and devices derived therefrom.Type: GrantFiled: May 3, 2016Date of Patent: October 31, 2017Assignees: Drexel University, The Trustees of the University of PennsylvaniaInventors: Yossef A. Elabd, Karen I. Winey, Yuesheng Ye, Jae-Hong Choi, Tsen-Shan Sharon Sharick
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Patent number: 9745432Abstract: The present invention relates to the preparation of novel anion exchange membranes from bicomponent or tricomponent copolymers containing both quaternizable and cross-linkable moieties. The bicomponent copolymers consisted with polyacrylonitrile and poly(2-dimethylaminoethyl) methacrylate and the tricomponent copolymers consisted with polyacryloniterle and poly2-dimethylaminoethyl) methacrylate and polyn-butyl acrylate. Quaternization of dimethyl amino groups of copolymer by methyl iodide followed by cross-linking of acrylonitrile groups of copolymer by hydrazine hydrate resulted anion exchange membrane with desired properties such as high ion exchange capacity (1.30-1.50 meqg?1), high transport number (0.92-0.93) for direct use in electrodyalysis unit. The tricomponent anion exchange membrane containing 32 wt % PDMA, 17 wt % PnBA, and 51 wt % PAN exhibited improved performance mainly in terms of low power consumption and high current efficiency during desalination of water.Type: GrantFiled: July 30, 2014Date of Patent: August 29, 2017Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Uma Chatterjee, Suresh Kumar Jewrajka, Sreekumaran Thampy
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Patent number: 9732194Abstract: Methods for forming a graft copolymer of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer are provided. The methods comprise a) irradiating a poly(vinylidene fluoride)-based polymer with a stream of electrically charged particles; b) forming a solution comprising the irradiated poly(vinylidene fluoride)-based polymer, an electrically conductive monomer and an acid in a suitable solvent; and c) adding an oxidant to the solution to form the graft copolymer. Graft copolymers of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer, nanocomposite materials comprising the graft copolymer, and multilayer capacitors comprising the nanocomposite material are also provided.Type: GrantFiled: December 7, 2012Date of Patent: August 15, 2017Assignee: Nanyang Technological UniversityInventors: Pooi See Lee, Vijay Kumar, Meng-Fang Lin
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Patent number: 9694357Abstract: A method of making a multi-acid polymer comprising: reacting a polymer precursor in sulfonyl fluoride or sulfonyl chloride form with anhydrous ammonia to obtain a sulfonamide, wherein the polymer precursor in sulfonyl fluoride or sulfonyl chloride form has a formula R—SO2F or R—SO2Cl, respectively, with R being one of more units of the polymer precursor without sulfonyl fluoride or sulfonyl chloride, and wherein the sulfonamide has a formula R—SO2—NH2; and reacting the sulfonamide with a compound of a formula COOH—X-AGG under a mild base condition, wherein X is one of C6H3 or N(CH2)3 and AGG is an acid giving group, to form the multi-acid polymer having an imide base and more than two proton conducting groups.Type: GrantFiled: March 23, 2016Date of Patent: July 4, 2017Assignee: Nissan North America, Inc.Inventor: Rameshwar Yadav
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Patent number: 9687585Abstract: Methods to produce thermoforms from P4HB homopolymer and blends thereof have been developed. These thermoforms are produced from films and sheets including P4HB, wherein the intrinsic viscosity of the P4HB is less than 3.5 dl/g, but greater than 0.35 dl/g, and the thermoforms are produced at a temperature equal to or greater than the softening point of P4HB, and more preferably at a temperature higher than the melting point of P4HB. A preferred embodiment includes a P4HB thermoform wherein a film or sheet including a P4HB polymer is thermoformed at a temperature between its melting point and 150° C. In a particularly preferred embodiment the thermoform is a laminate made from a P4HB film and a P4HB mesh.Type: GrantFiled: August 20, 2014Date of Patent: June 27, 2017Assignee: Tepha, Inc.Inventors: Matthew Bernasconi, Dennis Connelly, Said Rizk, David P. Martin, Simon F. Williams
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Patent number: 9593215Abstract: The present invention provides for a polymer formed by reacting a first reactant polymer, or a mixture of first reactant polymers comprising different chemical structures, comprising a substituent comprising two or more nitrogen atoms (or a functional group/sidechain comprising a two or more nitrogen atoms) with a second reactant polymer, or a mixture of second reactant polymers comprising different chemical structures, comprising a halogen substituent (or a functional group/sidechain comprising a halogen).Type: GrantFiled: December 23, 2015Date of Patent: March 14, 2017Assignee: The Regents of the University of CaliforniaInventors: Siwei Liang, Nathaniel A. Lynd
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Patent number: 9559367Abstract: The present invention relates to membrane electrode assemblies comprising two electrochemically active electrodes separated by a polymer electrolyte membrane, there being a polyimide layer on each of the two surfaces of the polymer electrolyte membrane that are in contact with the electrodes. The present membrane electrode assemblies may be used in particular for producing fuel cells which have a particularly high long-term stability.Type: GrantFiled: July 31, 2003Date of Patent: January 31, 2017Assignee: BASF Fuel Cell GmbHInventors: Jürgen Pawlik, Jochen Baurmeister, Christoph Padberg
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Patent number: 9553327Abstract: A method for forming a modified solid polymer includes a step of contacting a solid fluorinated polymer with a sodium sodium-naphthalenide solution to form a treated fluorinated solid polymer. The treated fluorinated solid polymer is contacted with carbon dioxide, sulfur dioxide, or sulfur trioxide to form a solid grafted fluorinated polymer. Characteristically, the grafted fluorinated polymer includes appended CO2H or SO2H or SO3H groups. The solid grafted fluorinated polymer is advantageously incorporated into a fuel cell as part of the ion-conducting membrane or a water transport membrane in a humidifier.Type: GrantFiled: December 30, 2014Date of Patent: January 24, 2017Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Timothy J. Fuller, Ruichun Jiang
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Patent number: 9527073Abstract: The present invention describes the process of preparation of inter-polymer film of p-methylstyrene-co-divinylbenzene and its conversion into anion exchange membrane through a greener route which dispenses with the use of chloromethyl ether. The membrane with polyethylene binder is shown to have equivalent or even superior performance to anion exchange membrane prepared from styrene-co-divinylbenzene/polyethylene through chloromethyl ether route.Type: GrantFiled: November 25, 2013Date of Patent: December 27, 2016Assignee: Council of Scientific & Industrial ResearchInventors: Pushpito Kumar Ghosh, Saroj Sharma, Milan Dinda, Chiragkumar Rameshbhai Sharma, Uma Chatterjee, Vaibhav Kulshreshtha, Soumyadeb Ghosh, Babulal Surabhai Makwana, Sreekumaran Thampy, Girish Rajanikant Desale
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Patent number: 9511169Abstract: Continuous processing methods are used for making absorbable polymeric non-wovens, with anisotropic properties, improved mechanical properties and without substantial loss of polymer molecular weight during processing. The method includes producing dry spun-non wovens from a polymer, and collecting the fibers using a rotating collector plate, preferably a rotating cylinder, to collect the non-woven instead of a fiberglass stationary collector plate. The non-wovens can be used for a variety of purposes including fabrication of medical devices.Type: GrantFiled: May 16, 2014Date of Patent: December 6, 2016Assignee: Tepha, Inc.Inventors: Kai Guo, Fabio Felix, David P. Martin
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Patent number: 9455451Abstract: Water soluble catalysts, (M)meso-tetra(N-Methyl-4-Pyridyl)Porphinepentachloride (M=Fe, Co, Mn & Cu), have been incorporated into the polymer binder of oxygen reduction cathodes in membrane electrode assemblies used in PEM fuel cells and found to support encouragingly high current densities. The voltages achieved are low compared to commercial platinum catalysts but entirely consistent with the behavior observed in electroanalytical measurements of the homogeneous catalysts. A model of the dynamics of the electrode action has been developed and validated and this allows the MEA electrodes to be optimized for any chemistry that has been demonstrated in solution. It has been shown that improvements to the performance will come from modifications to the structure of the catalyst combined with optimization of the electrode structure and a well-founded pathway to practical non-platinum group metal catalysts exists.Type: GrantFiled: October 11, 2013Date of Patent: September 27, 2016Assignee: The Regents of the University of CaliforniaInventors: John B. Kerr, Xiaobing Zhu, Gi Suk Hwang, Zulima Martin, Qinggang He, Peter Driscoll, Adam Weber, Kyle Clark
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Patent number: 9441083Abstract: A functional polymer membrane, prepared by curing a composition comprising a polymerizable compound (A) represented by Formula (1) and a monofunctional polymerizable compound (B): wherein R1 represents a hydrogen atom or a methyl group; Q represents a polyol residue formed by removing m2 hydrogen atoms from hydroxyl groups of a trivalent to hexavalent polyol; L represents a divalent linking group; m1 represents 0 or 1; m2 represents an integer of from 3 to 6, and wherein the monofunctional polymerizable compound (B) is a (meth)acrylate compound, a (meth)acrylamide compound, a vinyl ether compound, an aromatic vinyl compound, an N-vinyl compound, or an allyl compound.Type: GrantFiled: March 26, 2015Date of Patent: September 13, 2016Assignee: FUJIFILM CorporationInventors: Tetsufumi Takamoto, Akihito Amao, Wakana Yamada
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Patent number: 9434679Abstract: The present invention provides a fluorinated ionomer [polymer (I)] comprising recurring units derived from at least the following monomers: (i) 5 to 50% by weight of a fluorinated monomer [monomer (A)] containing at least one —SO2X functionality, preferably having the formula of CF2?CF—O—(CF2CF(CF3)O)m—(CF2)mSO2X (I) wherein m is 0 or 1, n is an integer between 0-10, and X is selected from F, OH, and O?Me+, wherein Me+ indicates an alkali metal ion or an ammonium cation of formula NR4? where each R independently represents a hydrogen atom or a monovalent organic radical selected from aliphatic radicals having from 1 to 8 carbon atoms and arylic or alicyclic radicals having from 3 to 8 carbon atoms; (ii) a non-functional fluorinated monomer [monomer (B)] having at least one ethylene unsaturation; and (iii) a fluorinated polyfunctional compound having the general formula: (CR1R2?CFCF2—O)a—Rf—((O)c—CF?CR3R4)b (II) wherein: a is an integer equal to or larger than 1, preferably a is 1, 2, or 3; b is 0 or 1 and theType: GrantFiled: July 30, 2013Date of Patent: September 6, 2016Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.Inventors: Luca Merlo, Vito Tortelli, Ivan Wlassics, Claudio Oldani
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Patent number: 9406958Abstract: The present invention provides a fluoropolymer electrolyte material which has improved processability and which is easily produced. The electrolyte emulsion of the present invention comprises an aqueous medium and a fluoropolymer electrolyte dispersed in the aqueous medium. The fluoropolymer electrolyte has a monomer unit having an SO3Z group (Z is an alkali metal, an alkaline-earth metal, hydrogen, or NR1R2R3R4, and R1, R2, R3, and R4 each are individually a C1-C3 alkyl group or hydrogen). The fluoropolymer electrolyte has an equivalent weight (EW) of 250 or more and 700 or less and a proton conductivity at 110° C. and relative humidity 50% RH of 0.10 S/cm or higher. The fluoropolymer electrolyte is a spherical particulate substance having an average particle size of 10 to 500 nm. The fluoropolymer electrolyte has a ratio (the number of SO2F groups)/(the number of SO3Z groups) of 0 to 0.01.Type: GrantFiled: August 10, 2015Date of Patent: August 2, 2016Assignees: ASAHI KASEI KABUSHIKI KAISHA, DAIKIN INDUSTRIES, LTD.Inventors: Takahiko Murai, Naoki Sakamoto, Naoto Miyake, Tadashi Ino, Masaharu Nakazawa, Noriyuki Shinoki, Takashi Yoshimura, Masahiro Kondo
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Patent number: 9403162Abstract: Ionomers and ionomer membranes, consisting of a non-fluorinated or partly fluorinated non-, partly or fully-aromatic main chain and a non- or partly-fluorinated side chain with ionic groups or their non-ionic precursors, have a positive impact on the proton conductivity of the ionomers. Various processes produce these polymeric proton conductors. The membranes are useful for fuel cell applications.Type: GrantFiled: November 12, 2014Date of Patent: August 2, 2016Inventors: Thomas Häring, Rima Häring
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Patent number: 9379402Abstract: An anion conducting electrolyte membrane with high performance where the electric conductivity and the water uptake are balanced, and a method of manufacturing the same are disclosed. The anion conducting electrolyte membrane comprises: a polymeric material which consists of fluorine polymer, olefinic polymer, or aromatic polymer; weak base quaternary salt obtained by the reaction of grafts introduced by graft polymerizing vinyl monomer which contains halogenated alkyl groups using radiation and strong organic bases.Type: GrantFiled: March 5, 2013Date of Patent: June 28, 2016Assignees: Japan Atomic Energy Agency, Daihatsu Motor Co., Ltd.Inventors: Kimio Yoshimura, Hiroshi Koshikawa, Tetsuya Yamaki, Masaharu Asano, Yasunari Maekawa, Hideyuki Shishitani, Hirohisa Tanaka, Susumu Yamaguchi, Koichiro Asazawa, Kazuya Yamamoto, Fumihiro Sanpei
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Patent number: 9379405Abstract: An electrolyte membrane having alkylether graft chains for use in a fuel cell produced by a method of producing an electrolyte membrane for use in a fuel cell, including: performing radiation-induced graft polymerization of a vinyl monomer having nucleophilic functional groups, the vinyl monomer selected from an acylvinyl ether derivative, a styrene derivative, and a methacrylic acid derivative, with a polymer substrate comprising a polymer selected from a fluorine-containing polymer, an olefinic polymer, and an aromatic polymer; deprotecting the nucleophilic functional group, which is protected by an ester bond, of a graft chain on the polymer substrate introduced by the radiation-induced graft polymerization; and introducing an alkylethersulfonic acid structure into the deprotected nucleophilic functional group of the graft chain, by use of an electrophilic reagent selected from cyclic sulfonic acid ester and alkylhalide-sulfonate.Type: GrantFiled: June 21, 2013Date of Patent: June 28, 2016Assignee: KANAGAWA UNIVERSITYInventors: Yasunari Maekawa, Kazuyuki Enomoto, Nobuhiro Kihara
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Patent number: 9321047Abstract: There is provided an anion exchange membrane comprising, as a main element, a block copolymer having a vinyl alcohol polymer block and a cationic-group containing polymer block as components and which is subjected to a crosslinking treatment. An anion exchange membrane is produced by heating a film obtained from a solution of the block copolymer at a temperature of 100° C. or more, crosslinking the film with a dialdehyde compound in water, an alcohol or a mixture of these under an acidic condition and then washing the film with water. Thus, there can be provided an anion exchange membrane in which organic fouling can be prevented and which exhibiting excellent basic properties such as a membrane resistance and an ionic transport number and excellent membrane strength.Type: GrantFiled: March 18, 2014Date of Patent: April 26, 2016Assignee: KURARAY CO., LTD.Inventors: Atsushi Jikihara, Kenichi Kobayashi, Naoki Fujiwara
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Patent number: 9309343Abstract: A membrane obtainable from curing a composition comprising (i) a curable compound comprising at least two acrylic groups and a quaternary ammonium group; (ii) solvent; and optionally (iii) a curable compound having one ethylenically unsaturated group.Type: GrantFiled: July 5, 2012Date of Patent: April 12, 2016Assignee: Fujifilm Manufacturing Europe BVInventors: Bastiaan Van Berchum, Willem Johannes Van Baak, Jacko Hessing
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Patent number: 9233345Abstract: An anion transport membrane is provided enabling efficient anion exchange across the membrane, which could be used in applications like fuel cells, water electrolyzers, or water filtration systems. The structural membrane morphology is based on a hydrophobic polysulfone membrane backbone and co-grafted thereon hydrophilic poly(ethylene glycol) grafts and anion conducting quaternary ammonium species. This structure defines a bi-continuous morphology with locally phase-separated hydrophobic-hydrophilic domains, and a co-localization of the anion conducting quaternary ammonium species with respect to the hydrophilic poly(ethylene glycol) grafts enabling efficient and continuous ion transport channels for facilitating anion transport.Type: GrantFiled: February 12, 2014Date of Patent: January 12, 2016Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Steve S. He, Curtis W. Frank
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Patent number: 9217089Abstract: An ink for inkjet recording includes water; a hydrosoluble solvent, a pigment, and a copolymer including a salt of a diphosphonic acid group. The copolymer including a salt of a diphosphonic acid group includes structural units having the following formulae (1) and (2): X represents an alkylene group having 1 to 3 carbon atoms, each of R1 and R2 represents a hydrogen atom or a methyl group, M+ represents an alkali metal ion, an organic ammonium ion or a proton and Z1 represents a hydrocarbon group having 6 to 22 carbon atoms. The alkali metal ion or the organic ammonium ion and the proton may be mixed, and half or more of the M+ are alkali metal ions or the organic ammonium ions.Type: GrantFiled: August 6, 2014Date of Patent: December 22, 2015Assignee: RICOH COMPANY, LTD.Inventors: Kazukiyo Nagai, Yuusuke Koizuka, Mitsuru Naruse, Masayasu Nonogaki, Akihiko Matsuyama, Keita Katoh, Shigeyuki Harada, Masayuki Fukuoka
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Patent number: 9160005Abstract: A modified maleimide oligomer is disclosed. The modified maleimide oligomer is made by performing a reaction of a compound having a barbituric acid structure, a free radical capture, and a compound having a maleimide structure. A composition for a battery is also disclosed. The composition includes the modified maleimide oligomer.Type: GrantFiled: June 3, 2013Date of Patent: October 13, 2015Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chorng-Shyan Chern, Jing-Pin Pan, Chang-Rung Yang, Tsung-Hsiung Wang, Guan-Lin Lai, Jung-Mu Hsu
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Patent number: 9120687Abstract: The present invention generally relates to the field of water treatment, and in particular to polymer inclusion membranes for use in industrial processes which generate aqueous solutions containing thiocyanate (SCN). The invention particularly relates to polymer inclusion membranes for use in processes for treating aqueous solutions containing SCN and more specifically polymer inclusion membranes comprising (i) about 10-20% wt/wt of a quaternary ammonium salt of formula (I) wherein R1 -R4 are independently alkyl chains and X? is an anion; (ii) about 5-30% wt/wt of a plasticizer/ modifier; and (iii) about 50% wt/wt of a polymer selected from the group consisting of poly(vinyl chloride), cellulose triacetate, and derivatives thereof.Type: GrantFiled: June 26, 2014Date of Patent: September 1, 2015Assignee: The University of MelbourneInventors: Spas Dimitrov Kolev, Robert Walter Cattrall, Youngsoo Cho
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Patent number: 9085691Abstract: A binder composition has good tensile strength, and can improve the cycle life of a rechargeable battery by maintaining the conduction path of an electrode even during expansion or shrinkage of the active material. The binder composition is environmentally friendly, and can be used in existing production lines as-is. An electrode and a rechargeable battery use the binder composition. The binder composition for a rechargeable battery includes a main binder including a poly(p-phenylene terephthalamide) having at least one of a sulfonic acid group (—SO3H) or a sulfonate group (—SO3?M+) in the polymer main chain.Type: GrantFiled: August 6, 2012Date of Patent: July 21, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Beomwook Lee, Hyesun Jeong, Hyeran Lee
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Patent number: 9077014Abstract: A self-humidifying fuel cell is made by preparing a porous substrate, coating the substrate with a zeolitic material and filling the pores with a proton-conducting material. The coating of the substrate includes selecting a zeolitic material, and applying coating on the pore walls and surface of the porous substrate, to form zeolitic material-coated pores. The resulting composite material is used as a self-humidifying proton-conducting membrane in a fuel cell.Type: GrantFiled: March 30, 2012Date of Patent: July 7, 2015Assignee: The Hong Kong University of Science and TechnologyInventors: King Lun Yeung, Wei Han
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Patent number: 9034447Abstract: The present invention provides a new design for high capacity stationary phases for dianion selective ion chromatography. The stationary phases include one or more layers which are products of condensation polymerization. Multiple components are of use in forming the first polymer layer and the condensation polymer structure, thereby providing a stationary phase that can be engineered to have a desired property such as ion capacity, ion selectivity, and the like. Exemplary condensation polymers are formed by the reaction of at least one polyfunctional compound with at least one compound of complimentary reactivity, e.g., a nucleophilic polyfunctional compound reacting with an electrophilic compound.Type: GrantFiled: March 9, 2012Date of Patent: May 19, 2015Assignee: DIONEX CORPORATIONInventors: Christopher A. Pohl, Kannan Srinivasan, Sheetal Bhardwaj
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Publication number: 20150133570Abstract: Provided is a method of preparing a crosslinked sulfonated poly(ether ether ketone) (SPEEK) cation exchange membrane including: preparing a crosslinker mixture of a first crosslinker containing two or more vinyl oxy groups and a second crosslinker containing three or more vinyl groups; preparing a mother liquor containing the crosslinker mixture, a SPEEK polymer substituted with sodium, and a solvent; and casting the mother liquor and then irradiating radiation thereon.Type: ApplicationFiled: May 28, 2014Publication date: May 14, 2015Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Junhwa SHIN, Joon Yong SOHN, Ju-Myung SONG, Sun-Young LEE, Hyun-Su WOO
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Publication number: 20150129428Abstract: A curable composition comprising: (i) 2.5 to 50 wt % crosslinker comprising at least two acrylamide groups; (ii) 12 to 65 wt % curable ionic compound comprising an ethylenically unsaturated group and a cationic group; (iii) 10 to 70 wt % solvent; and (iv) 0 to 10 wt % of free radical initiator; and (v) non-curable salt; wherein the molar ratio of (i):(ii) is >0.10. The compositions are useful for preparing ion exchange membranes.Type: ApplicationFiled: January 23, 2015Publication date: May 14, 2015Inventors: Harro ANTHEUNIS, Jacko HESSING, Bastiaan VAN BERCHUM
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Publication number: 20150132681Abstract: A curable composition comprising: (i) 2.5 to 50 wt % crosslinker comprising at least two acrylamide groups; (ii) 20 to 65 wt % curable ionic compound comprising an ethylenically unsaturated group and an anionic group; (iii) 15 to 45 wt % solvent; and (iv) 0 to 10 wt % of free radical initiator; wherein the molar ratio of (i):(ii) is 0.1 to 1.5. The compositions are useful for preparing ion exchange membranes.Type: ApplicationFiled: January 23, 2015Publication date: May 14, 2015Inventors: Bastiaan VAN BERCHUM, Jacko HESSING, Harro ANTHEUNIS
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Patent number: 9023902Abstract: Highly energy efficient electrodialysis membranes having low operating costs and a novel process for their manufacture are described herein. The membranes are useful in the desalination of water and purification of waste water. They are effective in desalination of seawater due to their low electrical resistance and high permselectivity. These membranes are made by a novel process which results in membranes significantly thinner than prior art commercial electrodialysis membranes. The membranes are produced by polymerizing one or more monofunctional ionogenic monomers with at least one multifunctional monomer in the pores of a porous substrate.Type: GrantFiled: February 25, 2014Date of Patent: May 5, 2015Assignee: Evoqua Water Technologies Pte. LtdInventors: Juchui Ray Lin, George Y. Gu
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Patent number: 9023557Abstract: A method is disclosed for production of solutions of aminophosphonic acids and polymeric sulphonic acids in aprotic solvents. Membranes for membrane methodologies are produced from said solutions. Said membranes can also be doped with phosphoric acid.Type: GrantFiled: January 23, 2007Date of Patent: May 5, 2015Assignee: Between Lizenz GmbHInventor: Thomas Häring
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Patent number: 9023554Abstract: The present invention provides a perfluorinated ion exchange resin, whose structural formula is shown in formula M. The present invention also provides preparation method of the perfluorinated ion exchange resin, comprising subjecting tetrafluoroethylene monomers and two kinds of sulfonyl fluoride-containing vinyl ether monomers in the presence of initiator to ternary copolymerization. The perfluorinated ion exchange resin provided in accordance with the present invention can fulfill the requirements of mechanical strength and ion exchange capacity at the same time and has good thermal stability.Type: GrantFiled: December 11, 2009Date of Patent: May 5, 2015Assignee: Shandong Huaxia Shenzhou New Material Co., Ltd.Inventors: Yongming Zhang, Sheng Qin, Zihong Gao, Heng Zhang, Maoxiang Wei, Yong Li, Jun Wang
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Patent number: 9018270Abstract: A method of forming a polymer is provided, the method comprising: Providing a first monomer comprising one or more aromatic moieties, the first monomer comprising at least two amino groups, each of the amino groups being attached to an aromatic moiety; and contacting said first monomer with formaldehyde or a source of methylene. Polymers made by such a method and uses of such polymers are also described.Type: GrantFiled: September 12, 2011Date of Patent: April 28, 2015Assignee: University College Cardiff Consultants LimitedInventors: Neil Bruce McKeown, Mariolino Carta, Matthew James Croad
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Publication number: 20150111128Abstract: The method for producing an anion exchange membrane according to the present invention includes the steps of irradiating a substrate composed of a hydrocarbon polymer with radiation and heat-treating the irradiated substrate so as to form a crosslinked structure between chains of the hydrocarbon polymer contained in the substrate; further irradiating the substrate, in which the crosslinked structure has been formed, with radiation and graft-polymerizing, onto the irradiated substrate, a monomer containing a site into which a functional group having anion conducting ability can be introduced and an unsaturated carbon-carbon bond so as to form a graft chain composed of the polymerized monomer; and introducing the functional group having anion conducting ability into the site of the formed graft chain.Type: ApplicationFiled: December 27, 2013Publication date: April 23, 2015Inventors: Koso Matsuda, Takeshi Nakano, Hiroyuki Nishii
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Fluorine containing ionomer composite with ion exchange function, preparation method and use thereof
Patent number: 9012106Abstract: Provided is a composite which is comprised of one or more ion exchange resin(s) and a porous fluorine containing polymer membrane (2), wherein the porous membrane and the resin form a carbon-chain crosslinked structure, so that the film prepared from the composite is of good airtightness and stability, as well as high ion exchange capacity and high conductivity. The preparation method of the composite, the product prepared from this composite and the application thereof are also provided.Type: GrantFiled: June 18, 2010Date of Patent: April 21, 2015Assignee: Shandong Huaxia Shenzhou New Material Co., LtdInventors: Yongming Zhang, Junke Tang, Ping Liu, Heng Zhang, Jun Wang -
Publication number: 20150105481Abstract: A process for preparing a membrane comprising applying a curable composition to a porous support and curing the composition, wherein the composition comprises: a) a curable ionic compound; b) a first crosslinking agent; c) a second crosslinking agent; d) an inert solvent; and e) optionally a free radical initiator; wherein the second crosslinking agent has a melting point below 80° C. Also claimed are the compositions and membranes obtainable by using the process.Type: ApplicationFiled: March 22, 2013Publication date: April 16, 2015Inventors: Jacko Hessing, Willem Van Baak
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Patent number: 9006300Abstract: A method for the production of a mechanically stabilized polyazole polymer membrane or film having the following steps: a) providing a membrane or film containing i.) a polyazole with at least one amino group in a repeating unit except the ones obtained by reacting aromatic and/or heteroaromatic diaminocarboxylic acids, ii.) at least one strong acid and iii.) at least one stabilizing reagent, the total content of stabilizing reagents in the membrane or film being within the range of from 0.01 to 30% by weight, b) performing the stabilization reaction in the membrane, immediately or in a subsequent processing step of the membrane, c) optionally doping the membrane obtained in accordance with step b) with a strong acid or concentrating the present strong acid by removal of present water, wherein the stabilizing reagent contains at least one oxazine-based compound and wherein the polyazole polymer has at least 1.8 dl/g intrinsic viscosity.Type: GrantFiled: November 12, 2010Date of Patent: April 14, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Oliver Gronwald, Jörg Belack, Jochen Baurmeister, Thomas Justus Schmidt, Seongwoo Choi, Jung Ock Park, Woo Sung Jeon, Jung Seok Yi
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Patent number: 8993643Abstract: Methods for producing or regenerating an iodinated anion exchange resin are presented. The methods include treating an iodide loaded anionic resin with an aqueous solution comprising an in situ formed I2 to produce the iodinated resin. The iodinated resins show reduced and stable levels of iodine elution compared to resins produced by conventional methods. Methods and systems for purifying water are also presented.Type: GrantFiled: May 8, 2012Date of Patent: March 31, 2015Assignee: Water Security CorporationInventors: Sivarooban Theivendran, Terryll Riley Smith, James J. Kubinec