Previously Formed Solid Ion-exchange Polymer Admixed With Nonreactive Material Or Ion-exchange Polymer Patents (Class 521/28)
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Patent number: 7674835Abstract: Methods of making macroporous anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described.Type: GrantFiled: December 21, 2005Date of Patent: March 9, 2010Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, Robert T. Fitzsimons, Jr., Kannan Seshadri, Simon K. Shannon, Peter D. Wickert, James I. Hembre
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Patent number: 7547395Abstract: A separation medium in macroporous gel form is disclosed which is obtainable by cooling an aqueous solution of at least one gel forming polymer to a temperature, at which the solvent in the system is partially frozen with the dissolved substances concentrated in the non-frozen fraction of the solvent, said gel forming polymer being selected from the group consisting of polymers normally forming gels too fast when an aqueous solution thereof is cooled to a temperature within a range below 0° C. to enable the formation of a cryogel and said cooling being carried out in the presence of at least one chaotropic agent in said aqueous solution in order to prevent gel formation before the polymer solution is frozen. The use of said separation medium for diverse separation purposes is also disclosed.Type: GrantFiled: October 11, 2002Date of Patent: June 16, 2009Assignee: Protista Biotechnology ABInventors: Bo Mattiasson, Igor Galaev, Vladimir Lozinsky, Fatima Plieva
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Patent number: 7547733Abstract: An organic/inorganic composite proton exchange membrane (PEM) is disclosed. The PEM includes a proton exchange membrane and a particulate inorganic conductor filler material provided in the proton exchange membrane. The particulate inorganic conductor filler material imparts enhanced water retention capabilities to the PEM at high temperatures, as well as enhances the proton conductivity of the PEM.Type: GrantFiled: October 7, 2004Date of Patent: June 16, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Tao Xie, Timothy J. Fuller
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Patent number: 7544278Abstract: The invention includes novel anion exchange membranes formed by in situ polymerization of at least one monomer, polymer or copolymer on a woven support membrane and their methods of formation. The woven support membrane is preferably a woven PVC membrane. The invention also includes novel cation exchange membranes with or without woven support membranes and their methods of formation. The invention encompasses a process for using the membranes in electrodialysis of ionic solutions and in particular industrial effluents or brackish water or seawater. The electrodialysis process need not include a step to remove excess ions prior to electrodialysis and produces less waste by-product and/or by-products which can be recycled.Type: GrantFiled: April 19, 2004Date of Patent: June 9, 2009Assignee: Seventy-Seventh Meridian Corporation, LLCInventors: Tejraj Aminabhavi, Padmakar V. Kulkarni, Mahadevappa Y. Kariduraganavar
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Patent number: 7521484Abstract: The present invention relates to a non-agglomerating, readily separable mixed bed ion exchange system comprising: (a) a strong base quaternary ammonium anion exchange resin wherein said anion exchange resin has been pretreated with 10 to 800 milligrams of water-soluble sulfonated poly(vinylaromatic)polyelectrolyte per liter of anion exchange resin; wherein the number average molecular weight of the sulfonated poly(vinylaromatic)polyelectrolyte is from 5,000 to 1,000,000; and (b) a strong acid sulfonated cation exchange resin wherein said cation exchange resin has been pretreated with 10 to 800 milligrams of a water soluble cationic polyelectrolyte selected from the group of polymers consisting of poly(vinylaromatic)quaternary amine salts, poly(vinylaromatic)tertiary amine acid salts, or poly(vinylpyridines) acid salts, wherein the number average molecular weight of said polymers is from 5,000 to 1,000,000.Type: GrantFiled: August 21, 2002Date of Patent: April 21, 2009Assignee: Rohm and Haas CompanyInventor: Garth Rockwood Parker, Jr.
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Patent number: 7482387Abstract: A method for processing spent ion-exchange resins is provided by reducing the volume of the spent ion-exchange resins through a wet oxidation process and solidifying the residual wet oxidation slurry and the waste solution with high efficiency. The method comprises of using barium hydroxide as a neutralization agent to adjust pH of the reaction solution so as to drive away ammonia from the solution, and as a conversion agent to convert sulfuric acid and sulfate obtained in the reaction into barium sulfate. The process can solidify the wet oxidation residue slurry and waste solution with high efficiency.Type: GrantFiled: February 17, 2004Date of Patent: January 27, 2009Assignee: Institute of Nuclear EnergyInventors: Ching-Tsuen Huang, Tzeng-Ming Liu, Jiing-Guang Tyen
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Publication number: 20080306174Abstract: A process for the storage or transportation of pretreated, conditioned ion exchangers as catalysts for chemical reactions is disclosed. The preconditioned ion-exchange resin is kept as preconditioned ion-exchange resin suspension in a storage or transporting container. The container with the preconditioned ion-exchange resin suspension is transported to either a storage site for storage or to a reactor for transfer of the resin to the reactor.Type: ApplicationFiled: May 30, 2008Publication date: December 11, 2008Applicant: Bayer MaterialScience AGInventors: Ernst-Joachim Alps, Ulrich Blaschke, Christian Munnich, Stefan Westernacher
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Patent number: 7455934Abstract: The invention is a material for a solid polyelectrolyte, comprising a multi-segmented fluoropolymer that comprises a block copolymer and/or a graft copolymer, wherein the copolymer contains one or more blocks essentially consisting of segment A and one or more blocks essentially consisting of segment B, the segment A combines with the segment B, wherein the segment A has a molecular weight of 5,000 to 1,000.Type: GrantFiled: May 10, 1999Date of Patent: November 25, 2008Assignee: Daikin Industries, Ltd.Inventors: Takayuki Araki, Noritoshi Oka, Yoshito Tanaka, Takayuki Nakamura, Tetsuo Shimizu
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Publication number: 20080269361Abstract: Disclosed is a flame-retardant resin composition which comprises inorganic particles, preferably a fly ash, containing a complex of silicon dioxide and aluminum oxide and having D50 of 1 to 10 ?m.Type: ApplicationFiled: February 23, 2005Publication date: October 30, 2008Inventors: Makoto Soyama, Kazuhiko Inoue, Masatoshi Iji
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Publication number: 20080227875Abstract: Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a particle size of about 2 nm to about 30 nm.Type: ApplicationFiled: February 27, 2008Publication date: September 18, 2008Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Dennis Edward Curtin, Edward George Howard
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Publication number: 20080182154Abstract: Disclosed herein is a slurry-type coating solution for cation-conducting polymer composite membranes that is capable of producing cation-conducting polymer composite membranes with high ionic conductivity as well as low methanol permeability and low ohmic resistance when used in direct-methanol fuel cells, via pluralization of solvents and use of specific additives. The coating slurry comprises about 1 to about 10 parts by weight of a sulfonated clay, about 100 parts by weight of a cation exchange group-containing polymer, and a co-solvent consisting of a high-boiling point solvent with a boiling point of about 180 to about 250° C. and a low-boiling point solvent with a boiling point of about 100 to about 180° C.Type: ApplicationFiled: January 18, 2008Publication date: July 31, 2008Applicant: CHEIL INDUSTRIES INC.Inventors: Tae Kyoung KIM, Myeong Soon KANG, Yeong Suk CHOI, Hae Kyoung KIM, Won Mok LEE
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Publication number: 20080161429Abstract: A process for producing flowable and liquid dispersable particles of a highly fluorinated ion exchange polymer is provided in which a dispersion of a highly fluorinated ion exchange polymer in a liquid comprised of at least 10 wt % of an organic liquid is provided, atomized to produce droplets, and released into a inert heated gas. The dispersion droplets dry to produce flowable particles of highly fluorinated ion exchange polymer having dry exterior surfaces and an internal residual moisture content of at least 4 wt %.Type: ApplicationFiled: December 13, 2007Publication date: July 3, 2008Inventor: VINCI MARTINEZ FELIX
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Publication number: 20080160351Abstract: A process for producing a dispersion of a highly fluorinated ion exchange polymer is provided in which a dispersion of a highly fluorinated ion exchange polymer in a first liquid that includes at least 10 wt % of an organic liquid is atomized and released into a heated gas to produce flowable particles of highly fluorinated ion exchange polymer having dry surface/exteriors and an internal residual moisture content of at least 4 wt %. The particles are dispersed in a second liquid to produce a second dispersion of highly fluorinated ion exchange polymer from which proton exchange membranes and electrodes for fuel cells may be produced.Type: ApplicationFiled: December 13, 2007Publication date: July 3, 2008Inventors: VINCI MARTINEZ FELIX, Kelly D. Barton
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Publication number: 20080099715Abstract: The invention provides a process for preparing polymer beads incorporating magnetic iron oxide particles, which process comprises producing a dispersion having a continuous aqueous phase and a dispersed organic phase, the organic phase comprising one or more polymerisable monomers, magnetic iron oxide particles and an organophosphorus dispersing agent for dispersing the magnetic iron oxide particles in the organic phase, and polymerising the one or more polymerisable monomers to form the polymer beads incorporating the magnetic iron oxide particles; complexing and ion exchange resins prepared by this process; methods for separating transition metal ions and other ions from an aqueous solution using the complexing and ion exchange resins; and polymer beads comprising a polymeric matrix having magnetic iron oxide particles and organophosphorus dispersing agent dispersed substantially uniformly therein.Type: ApplicationFiled: March 23, 2005Publication date: May 1, 2008Applicants: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH OR, ORICA AUSTRALIA PTY LTDInventors: Beryn John Adams, Robert James Eldridge, Warren Shane Knower, Fiona Jean Wallis, Colin Bruce Ritchie, Matthew Roy Raymond
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Publication number: 20080009555Abstract: The invention relates to a process for producing non-agglomerating mixed bed ion exchangers or mixed bed components.Type: ApplicationFiled: July 3, 2007Publication date: January 10, 2008Inventors: Wolfgang Zarges, Stefan Hilger, Pierre Vanhoorne, Hans-Jurgen Wedemeyer
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Patent number: 7307138Abstract: A sulfonated aromatic polyether ketone of the formula (II) [Ar—O—Ar?—CO—Ar?—O—Ar—CO—Ar?—CO—] ??(II) in which from 1% to 100% of the O-phenylene-CO units are substituted with an SO3M group and sulfonated and unsulfonated O-phenylene-CO units can be in any desired sequence with respect to one another, the radicals Ar, Ar? and Ar? independently of one another are substituted or unsubstituted 1,2-, 1,3- or 1,4-phenylene rings, and M, taking into account the ionic valencies, comprises one or more elements selected from the following group: H, NR4+, where R is H or C1-C4-alkyl, or an alkali metal or alkaline earth metal or a metal from subgroup 8, and is preferably H, NR4+, Li, Na, K, Ca, Mg, Fe or Pt.Type: GrantFiled: January 14, 2005Date of Patent: December 11, 2007Inventors: Joachim Clauss, Gregor Deckers, Arnold Schneller, Helmut Witteler
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Patent number: 7307127Abstract: A block copolymer composition AB is provided that has pendent groups —RZ extending from the A copolymer on at least 70 mol % of the A monomers, where R and Z are each an ionic species. The composition is included in a semipermeable membrane for use in a direct methanol fuel cell. Also described are articles of protective apparel comprising the composition which advantageously has barrier properties as well as superior water vapor transport properties.Type: GrantFiled: April 6, 2004Date of Patent: December 11, 2007Assignee: United States of America as represented by the Secretary of the ArmyInventors: Eugene Napadensky, Yossef A. Elabd, Dawn M. Crawford, James M. Sloan
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Patent number: 7279244Abstract: The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to this invention, there can be provided a fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein, said catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the anode side and the cathode side of the electrode assembly, and electroconductive separators having gas supply passages to the anode and to the cathode provided on the outside surfaces of the current collecting plates.Type: GrantFiled: July 8, 2005Date of Patent: October 9, 2007Assignee: Hitachi, Ltd.Inventors: Makoto Morishima, Tomoichi Kamo, Toshiyuki Kobayashi, Kenji Yamaga, Tohru Koyama
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Publication number: 20070208091Abstract: A method for producing a resin loaded with a hydrous oxide of an amphoteric metal ion. The resin is combined with at least two bed volumes of an aqueous solution containing a salt of the amphoteric metal ion, and having a metal ion concentration of at least 5%, and then treated with an aqueous alkali metal hydroxide solution.Type: ApplicationFiled: February 28, 2007Publication date: September 6, 2007Inventor: Jose Antonio Trejo
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Patent number: 7195835Abstract: An ion conducting membrane comprising dendrimeric polymers covalently linked into a network structure. The dendrimeric polymers have acid functional terminal groups and may be covalently linked via linking compounds, cross-coupling reactions, or copolymerization reactions. The ion conducting membranes may be produced by various methods and used in fuel cells.Type: GrantFiled: December 1, 2005Date of Patent: March 27, 2007Assignee: UChicago Argonne, LLCInventors: Daniel G. Colombo, Michael Krumpelt, Deborah J. Myers, John P. Kopasz
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Patent number: 7166685Abstract: Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a particle size of about 2 nm to about 30 nm.Type: GrantFiled: January 11, 2005Date of Patent: January 23, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Dennis Edward Curtin, Edward George Howard
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Patent number: 7163964Abstract: This invention presents an ion exchange media including a plurality of cation exchange zones and anion exchange zones in flow paths that are contained in a substantially nonporous resin transport framework. During electrodeionization and other potential applications the ion exchange media of the invention prevents unfavorable water splitting at resin-membrane interfaces and encourages water splitting at resin—resin interfaces where the water splitting may be constructively used to regenerate the resin.Type: GrantFiled: October 16, 2003Date of Patent: January 16, 2007Assignee: Aquatech International CorporationInventors: Ravi Chidambaran, Pavan Raina, Devesh Sharma, Narendra Singh Bisht
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Patent number: 7160926Abstract: An ion exchange fluorocarbon resin membrane having a storage modulus (JIS K-7244), when substituted with tributyl ammonium ions, at a temperature of not less than Tc represented by the following general equations (1-1) to (1-3) of 0.8×106 Pa or more, and a heat of crystal fusion at 270 to 350° C. of 1 J/g or less: Tc (° C.)=55+Tg (EW<750)??(1-1) Tc (° C.)=0.444×EW?278+Tg (750?EW<930)??(1-2) Tc (° C.)=135+Tg (EW?930)??(1-3) where Tg designates the peak temperature of loss tangent in the dynamic viscoelasticity measure-ment of the ion exchange fluorocarbon resin membrane (having SO3H as the ends of the side chains).Type: GrantFiled: May 31, 2002Date of Patent: January 9, 2007Assignee: Asahi Kasei Kabushiki KaishaInventors: Takuya Hasegawa, Yuichi Inoue
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Patent number: 7052793Abstract: The present invention relates to composite solid polymer electrolyte membranes (SPEMs) which include a porous polymer substrate interpenetrated with an ion-conducting material. SPEMs of the present invention are useful in electrochemical applications, including fuel cells and electrodialysis.Type: GrantFiled: December 28, 2000Date of Patent: May 30, 2006Assignee: Foster-Miller, Inc.Inventors: Richard M. Formato, Robert F. Kovar, Paul Osenar, Nelson Landrau, Leslie S. Rubin
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Patent number: 7045057Abstract: A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with ion-exchangeable media and passing a solution, containing a mixture of ionic species, through the media, wherein the solution is passed partly or completely counter-current to the media flow direction such that the ionic species are loaded to a desired level upon equilibration.Type: GrantFiled: April 11, 2003Date of Patent: May 16, 2006Assignee: Calgon Carbon CorporationInventors: Mark A. Bollinger, Chen-Chou Chiang
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Patent number: 7022744Abstract: A composition useful for separating lipoproteins, such as high density lipoprotein (HDL), low density lipoprotein (LDL), very low density lipoprotein (VLDL) and modified lipoproteins with a high degree of accuracy by ion-exchange based procedures. The composition comprises an organic particle having a hydrophilic surface onto which ion-exchange groups are introduced and which is formulated so as to provide a high enough degree of hydrophilicity to prevent irreversible absorption of lipoproteins, but which is not so high as to block the pores of the ion exchange particles and prevent adequate retention and separation of lipoproteins. A method for making a composition for separating lipoproteins comprising seed polymerization of organic particles, hydrophilic treatment of the organic particles by introducing 0.Type: GrantFiled: April 10, 2003Date of Patent: April 4, 2006Assignee: Mitsubishi Chemical CorporationInventors: Jun Haginaka, Masaru Sano, Tsunehiko Kurata
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Patent number: 7022743Abstract: The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to this invention, there can be provided a fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein, said catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the anode side and the cathode side of the electrode assembly, and electroconductive separators having gas supply passages to the anode and to the cathode provided on the outside surfaces of the current collecting plates.Type: GrantFiled: June 24, 2002Date of Patent: April 4, 2006Assignee: Hitachi, Ltd.Inventors: Makoto Morishima, Tomoichi Kamo, Toshiyuki Kobayashi, Kenji Yamaga, Tohru Koyama
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Patent number: 6977122Abstract: An ion conducting membrane comprising dendrimeric polymers covalently linked into a network structure. The dendrimeric polymers have acid functional terminal groups and may be covalently linked via linking compounds, cross-coupling reactions, or copolymerization reactions. The ion conducting membranes may be produced by various methods and used in fuel cells.Type: GrantFiled: March 25, 2002Date of Patent: December 20, 2005Assignee: The University of ChicagoInventors: Daniel G. Colombo, Michael Krumpelt, Deborah J. Myers, John P. Kopasz
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Patent number: 6962968Abstract: Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and reused by washing the resins with various wash solutions. Macrocyclic oligoesters substantially free of acid impurities polymerize to much higher molecular weight polyesters than macrocyclic oligoesters containing acid impurities.Type: GrantFiled: December 19, 2003Date of Patent: November 8, 2005Assignee: Cyclics CorporationInventors: Peter D. Phelps, Timothy A. Thompson
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Patent number: 6933357Abstract: High purity fluoropolymers are obtained by the emulsion polymerization process, removing essentially all ions and coagulating the polymer essentially without adding ions. These polymers are useful in the field of electronic devices.Type: GrantFiled: February 24, 2004Date of Patent: August 23, 2005Assignee: 3M Innovative Properties CompanyInventors: Werner M. A. Grootaert, Georg Burkard, William D. Coggio, Klaus Hintzer, Bernhard Hirsch, Robert E. Kolb, Albert Killich, Gernot Loehr
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Patent number: 6924318Abstract: A process for producing a bipolar membrane is described in which a cationic membrane undergoes a treatment with a salt from a group 8 metal, an anionic membrane undergoes a treatment with a salt of a transition metal not belonging to group 8, and then the two membranes are conjoined and, before and/or after having been conjoined, the membranes are brought into contact with a treatment solution selected from alkaline aqueous solutions, aqueous metal sulphate solutions and aqueous metal sulphite solutions.Type: GrantFiled: April 13, 2001Date of Patent: August 2, 2005Assignee: SOLVAY (Societe Anonyme)Inventors: Ellenio Mischi, Davide Mantione, Alessandra Pastacaldi, Luc Botte
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Patent number: 6919382Abstract: The invention provides novel solid supports comprising dihydroxyalkyl aminoalkyl and dihydroxyalkylaminobenzyl groups, and methods for making and using them. The supports are particularly useful for immobilizing and derivatizing functionalized boronic acids for use in solid phase synthesis, such as those used in combinatorial chemistries. The compositions and methods of the invention are also useful as scavenger solid supports, e.g., in solution-phase parallel synthesis of small molecule libraries, and for use in resin-to-resin transfer reactions via phase transfer of solid supported boronic acids under both aqueous and anhydrous conditions. The methods of the invention provide convergent solid-phase synthesis of symmetrically or unsymmetrically functionalized compounds, such as biphenyl compounds. Also provided are synthesizer devices, e.g., semiautomated parallel synthesizers.Type: GrantFiled: August 31, 2001Date of Patent: July 19, 2005Assignee: The Governors of the University of AlbertaInventor: Dennis G. Hall
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Patent number: 6916853Abstract: Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a particle size of about 2 nm to about 30 nm.Type: GrantFiled: December 20, 2002Date of Patent: July 12, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Dennis Edward Curtin, Edward George Howard, Jr.
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Patent number: 6911482Abstract: An ion exchange fluorocarbon resin precursor composition obtained by removing liquid components from a mixed solution of a dispersion of an ion exchange fluorocarbon resin precursor and a dispersion of tetrafluoroethylene polymer (PTFE).Type: GrantFiled: February 13, 2002Date of Patent: June 28, 2005Assignee: Asahi Kasei Kabushiki KaishaInventors: Takuya Hasegawa, Yoshimichi Nakayama
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Patent number: 6875415Abstract: Provided are a preconditioned resin and methods of preparation thereof as well as methods for purifying hydrogen peroxide solutions. The method includes preconditioning an anion exchange resin, wherein an anion exchange resin bed is provided and carbon dioxide gas is passed through the resin bed.Type: GrantFiled: April 4, 2001Date of Patent: April 5, 2005Assignee: Air Liquide America, LPInventors: Mary D. Havlicek, David L. Snyder, Joe G. Hoffman, Marshall E. Cummings
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Patent number: 6869980Abstract: The present invention relates to novel polymer blend membranes comprising a functional polymer based on sulfonated aryl polymers, a reinforcing polymer based on aminated or nitrated polyether sulfones and/or polyether ether sulfone and a plasticizer, and also their use as polymer electrolyte membrane in fuel cells, in particular in low-temperature fuel cells.Type: GrantFiled: March 1, 2001Date of Patent: March 22, 2005Assignee: Celanese Ventures GmbHInventor: Wei Cui
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Patent number: 6855747Abstract: There is disclosed a method of easily producing a long-lived ion sensitive film having excellent durability and used in an ion sensor. The method starts with preparing a monomer mixture consisting chiefly of monomer units including a functional group and a second group of bonded atoms. The functional group has a function of identifying a certain chemical substance. The second group can become an active species that induces a polymerization or bridging reaction by being irradiated with an electron beam or radiation. Then, the monomer mixture is irradiated with the electron beam or radiation in a low energy range. Thus, the monomer mixture is polymerized.Type: GrantFiled: December 23, 2002Date of Patent: February 15, 2005Assignees: JEOL Ltd., JEOL Engineering Co., Ltd.Inventors: Tadashi Kawai, Hirohisa Yoshida, Tokuo Mizuno, Atsuro Tonomura, Naoki Aota
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Publication number: 20040167236Abstract: High purity fluoropolymers are obtained by the emulsion polymerization process, removing essentially all ions and coagulating the polymer essentially without adding ions. These polymers are useful in the field of electronic devices.Type: ApplicationFiled: February 24, 2004Publication date: August 26, 2004Applicant: 3M Innovative Properties CompanyInventors: Werner M.A. Grootaert, Georg Burkard, William D. Coggio, Klaus Hintzer, Bernhard Hirsch, Robert E. Kolb, Albert Killich, Gernot Loehr
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Patent number: 6759441Abstract: The present invention relates to polymer blends and polymer blend membranes which consist of a polymeric sulfonic acid and of a polymer which contains primary, secondary or tertiary amino groups, which are prepared via mixing of a salt of the polymeric sulfonic acid with the polymer which contains primary, secondary or tertiary amino groups. The invention further relates to the use of polymer blend membranes in membrane fuel cells, polymer electrolyte membrane fuel cells (PEM fuel cells) or direct methanol fuel cells (DMFC), in membrane electrolysis, in aqueous or non-aqueous electrodialysis, in diffusion dialysis, in the perstractive separation of alkenes from alkene/alkane mixtures (here the membranes are in the SO3Ag form, where the Ag+ forms a reversible complex with the alkene (→facilitated transport)), in pervaporative separation of water from water/organics mixtures, or in gas separation.Type: GrantFiled: February 9, 2001Date of Patent: July 6, 2004Assignee: Universitat Stuttgart Lehrstuhl und Institut fur Chemische VerfahrenstechnikInventors: Jochen Kerres, Wei Cui
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Publication number: 20040099527Abstract: A dispersion composition comprising 100 parts by weight of a specific perfluorocarbon-based copolymer containing functional groups and 10 to 10,000 parts by weight of a specific liquid fluoro-oligomer(s). The composition of the present invention is useful as a material for producing, for example, a fluorine-containing cation-exchange membrane having excellent functions imparted thereto.Type: ApplicationFiled: March 26, 2003Publication date: May 27, 2004Inventor: Yoshimichi Nakayama
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Patent number: 6733914Abstract: A perfluorinated ion exchange membrane useful for membrane electrode assemblies and fuel cells and having improved ionic conductivity and water absorption characteristics.Type: GrantFiled: February 20, 2001Date of Patent: May 11, 2004Assignee: Ion Power, Inc.Inventors: Walther Gustav Grot, Stephen Andreas Grot
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Patent number: 6723757Abstract: The present invention relates to novel compatible binary and ternary cation-exchanger polymer and anion-exchanger polymer blend membranes.Type: GrantFiled: February 9, 2001Date of Patent: April 20, 2004Assignees: Universitat Stuttgart Lehrstuhl, Institut fur Chemische VerfahrenstechnikInventors: Jochen Kerres, Andreas Ullrich, Thomas Häring
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Patent number: 6720360Abstract: High purity fluoropolymers are obtained by the emulsion polymerization process, removing essentially all ions and coagulating the polymer essentially without adding ions. These polymers are useful in the field of electronic devices.Type: GrantFiled: February 1, 2000Date of Patent: April 13, 2004Assignee: 3M Innovative Properties CompanyInventors: Werner M. A. Grootaert, Georg Burkard, William D. Coggio, Klaus Hintzer, Bernhard Hirsch, Robert E. Kolb, Albert Killich, Gernot Loehr
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Patent number: 6710093Abstract: This invention relates to processes for immobilizing ion exchange particles, and to the products of those process. One embodiment of the invention encompasses a process of immobilizing ion exchange particles within a porous polyolefinic material. A second embodiment encompasses a process of immobilizing ion exchange particles within a hydrogel. Preferred hydrogels are comprised of polyvinyl alcohol.Type: GrantFiled: August 23, 2002Date of Patent: March 23, 2004Assignee: Porex CorporationInventors: Li Yao, George W. Greene, IV, Michael Gerald Arthur
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Publication number: 20040039070Abstract: The present invention relates to a non-agglomerating, readily separable mixed bed ion exchange system comprising:Type: ApplicationFiled: August 21, 2002Publication date: February 26, 2004Inventor: Garth Rockwood Parker
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Patent number: 6693139Abstract: This invention relates to ion exchange resins that have a reduced amount of physically adsorbed organic compounds, as well as methods of producing and using such resins. In particular, the amount of extractable total organic carbon on the resins may be less than about 200 parts per trillion by wet weight, as measured using gas chromatography/mass spectrometry. This invention also relates to methods of treating water that use such resins.Type: GrantFiled: September 6, 2001Date of Patent: February 17, 2004Assignee: United States Filter CorporationInventors: Gregory W. Bachman, Robert G. Loken, Julie G. Sterling, Thomas K. Mallmann
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Publication number: 20040020764Abstract: A method of preparing an ion-conducting material, for example membrane, having reduced sensitivity to water includes a step of treating an ion-conducting polymeric material (especially a sulphonated polyaryletherketone and/or sulphone) which has at least some crystallinity or which is crystallisable with a means to increase its crystallinity. The ion-conducting material prepared may be used in a Membrane Electrode Assembly of a fuel cell.Type: ApplicationFiled: December 19, 2002Publication date: February 5, 2004Inventors: Mark Andrews, Richard F. Bridges, Peter Charnock, John N Devine, David J. Kemmish, John E. Lockley, Brian Wilson
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Publication number: 20040019125Abstract: An ion exchanger for lipoproteins separation, which is an ion exchanger obtained by introducing an ion exchange group into surface hydrophilic-treated porous organic polymer particles (D) prepared by subjecting the surface of porous organic polymer particles (A) to hydrophilic treatment, wherein said hydrophilic treatment is carried out by allowing the porous organic polymer particles (A) to undergo addition reaction with a compound (B) having a cyclic other group or/and a hydrophilic group and a polymerizable unsaturated double bond and then to undergo copolymerization with a polymerizable vinyl monomer (C) having a cyclic ether group or/and a hydrophilic group, and wherein the ion exchange capacity is 0.15 milliequivalent or less per 1 g of dry ion exchanger, introduced amount of the compound (B) is from 0.Type: ApplicationFiled: April 10, 2003Publication date: January 29, 2004Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Jun Haginaka, Masaru Sano, Tsunehiko Kurata
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Patent number: 6632848Abstract: A heterogeneous anion exchanger comprising from 35 to 85 mass % of an anion exchange resin and from 15 to 65 mass % of a binder polymer, wherein the anion exchange resin is made of a polymer having repeating units represented by the following formula (1): wherein R is a C3-8 alkylene group or an alkyleneoxyalkyl group having a total carbon number of from 4 to 9, R1 is a C1-4 alkyl group which may be substituted by a hydroxyl group, each of R2 and R3 is a C1-4 alkyl group, and X− is an anion, and wherein any hydrogen atom bonded to the benzene ring may be substituted by an alkyl group or a halogen atom.Type: GrantFiled: July 23, 2001Date of Patent: October 14, 2003Assignee: Asahi Glass Company, LimitedInventor: Yoshio Sugaya
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Patent number: 6624206Abstract: The invention relates to processes for the preparation of free-flowing end products of strongly acidic cation exchangers. In the case of the strongly acidic cation exchangers prepared by the processes described in Patent Application P 195 48 012.0, the particle beds of the end products are not free-flowing. By additions of wetting agents or water-soluble initiators or surfactants in the polymerization stage or after the filtration of the end product and/or process engineering means, a permanent or temporary free flowability of the particle beds of the strongly acidic cation exchangers is achieved using the following processes. 1. By additions of known wetting agents in amounts of 0.25 g/l of aqueous phase or water-soluble initiators in amounts of 0.05 to 20 g/l of aqueous phase to the copolymerization system 20 minutes to 120 minutes after reaching the gel point. 2. By treatment of the strongly acidic cation exchangers with aqueous solutions of surface-active substances having a content of 0.Type: GrantFiled: February 11, 2002Date of Patent: September 23, 2003Assignee: IAB Ionenaustauscher GmbH BitterfeldInventors: Reinhard Bachmann, Lothar Feistel, Rüdiger Seidel, Karl-Heinz Siekiera, Kurt Wegewitz