Solid Polymer Derived From Ethylenically Unsaturated Reactant Only Patents (Class 521/31)
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Patent number: 8088833Abstract: To provide a separating agent for IgG purification, whereby IgG can be separated and purified efficiently at a high purity, and a method for purifying an IgG using it. A separating agent for IgG purification, characterized in that a polyacrylic acid and/or a polymethacrylic acid is immobilized on a carrier, and a method for purifying an IgG monomer, characterized in that a mixture containing an IgG monomer and an impurity containing polymeric IgG is contacted to the separating agent and eluted.Type: GrantFiled: April 24, 2007Date of Patent: January 3, 2012Assignee: Tosoh CorporationInventor: Koji Nakamura
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Publication number: 20110313066Abstract: The present invention provides novel and improved stimulus responsive polymers and methods of using the same for the purification of biomolecules.Type: ApplicationFiled: May 16, 2011Publication date: December 22, 2011Applicant: Millipore CorporationInventors: Jad Jaber, Wilson Moya, James Hamzik, Arezki Boudif, Yu Zhang, Neil Soice, John Charkoudian, Nripen Singh
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Publication number: 20110290714Abstract: A monolithic organic porous body includes a continuous macropore structure that includes cellular macropores that overlap to form openings having an average diameter of 20 to 200 ?m, the monolithic organic porous body having a thickness of 1 mm or more and a total pore volume of 0.5 to 5 ml/g, an area of a skeleton observed within an SEM image of a section of the continuous macropore structure (in a dry state) being 25 to 50%. A monolithic ion exchanger is produced by introducing an ion-exchange group into the monolithic organic porous body. The monolithic organic porous body and the monolithic ion exchanger are chemically stable, have high mechanical strength, and ensure a low pressure loss when fluid passes through. The monolithic organic porous body and the monolithic ion exchanger may be used as an adsorbent having a large adsorption capacity or an ion exchanger having a large ion-exchange capacity.Type: ApplicationFiled: December 18, 2008Publication date: December 1, 2011Applicant: ORGANO CORPORATIONInventors: Hiroshi Inoue, Akira Nakamura, Hitoshi Takada, Satoru Kondo
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Patent number: 8058319Abstract: Described is a process to prepare fluoropolymer organic-liquid dispersions containing a homogeneous mixture of reacted and unreacted sulfonyl halide groups. The dispersions are useful in the preparation of crosslinked membranes.Type: GrantFiled: May 18, 2007Date of Patent: November 15, 2011Assignee: E.I. du Pont de Nemours and CompanyInventor: Robert D. Lousenberg
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Publication number: 20110247981Abstract: This invention provides an adsorbent material capable of effectively trapping a target component in a sample solution and releasing the same, which has the satisfactory trapping capacity via hydrophobic interactions and via ion exchange reactions. The invention relates to an adsorbent material comprising a porous material of a polymer compound which is a copolymer obtained via copolymerization of a hydrophobic monomer (A), a hydrophilic monomer (B) capable of undergoing a second-order reaction, and a hydrophilic monomer (C) exhibiting a hydrogen-bonding capacity, and via introduction of an ion exchange group into a repeat unit derived from the hydrophilic monomer (B).Type: ApplicationFiled: December 11, 2009Publication date: October 13, 2011Inventors: Tetsuyoshi Ono, Yoshinori Inoue
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Patent number: 7967148Abstract: A process for classifying water-absorbing polymer beads, wherein screens having different mesh sizes are used before and after the postcrosslinking to remove the oversize.Type: GrantFiled: September 24, 2007Date of Patent: June 28, 2011Assignee: BASF SEInventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Karl J. Possemiers, Filip Mees
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Publication number: 20110138935Abstract: It is a subject of the present invention to provide a novel polymer; a filler for measuring a perfluoro compound having an acidic group at terminal which comprises said polymer; a column filled with said filler; and a measuring method for a perfluoro compound having an acidic group at terminal by using said column; as well as a filler for measuring a drug comprising the above-described polymer; a column filled with said filler; and a measuring method for a drug by using said column.Type: ApplicationFiled: August 10, 2009Publication date: June 16, 2011Applicants: WAKO PURE CHEMICAL INDUSTRIES, LTD., NIPPON FILCON CO., LTD.Inventors: Yoshinori Inoue, Kimiko Yoshida, Mamoru Kubota, Hitoshi Uemori
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Publication number: 20110123604Abstract: Cross-linked polyelectrolyte polymers with bound counterions that absorb about 20-fold or more of their mass in saline such as physiological saline a with the proviso that sodium does not exceed 60% of total bound counterions when hydrogen is the sole other counterion, are disclosed. Methods of preparing the disclosed polymers and for treating subjects such as patients in need of fluid removal and/or modulation of ions (e.g., sodium and/or potassium) are provided.Type: ApplicationFiled: August 29, 2008Publication date: May 26, 2011Applicant: SORBENT THERAPEUTICS, INC.Inventors: Alan Strickland, George Grass
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Patent number: 7947748Abstract: A method for preparing monodisperse crosslinked bead polymers by introducing droplets having a harmonic mean size from 50 to 1500 microns and comprising at least one monomer, at least one crosslinker and a free-radical polymerization initiator into an aqueous medium through orifices to produce an aqueous suspension of droplets having a volume fraction of droplets from 35 to 64%; wherein the droplets are not encapsulated; causing the aqueous suspension of droplets to flow in a downward direction in a pipe in which the temperature is maintained at least 20° C. below the temperature at which the polymerization initiator has a half-life of 1 hour; and polymerizing the droplets in a reactor.Type: GrantFiled: December 29, 2008Date of Patent: May 24, 2011Assignee: Rohm and Haas CompanyInventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
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Patent number: 7893118Abstract: 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: March 22, 2010Date of Patent: February 22, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Dennis Edward Curtin, Edward George Howard, Jr.
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Publication number: 20100242571Abstract: The present invention relates to a solid phase extraction body, methods for its manufacture, uses of such extraction body and analytical methods involving such extraction body.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Applicant: SYMRISE GmbH & Co., KGInventors: Stefan Brennecke, Andreas Degenhardt, Berthold Weber, Birgit Kohlenberg, Gerhard Krammer
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Publication number: 20100173223Abstract: A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.Type: ApplicationFiled: February 14, 2006Publication date: July 8, 2010Applicants: Toyota Jidosha Kabushiki Kaisha, Yamaguchi UniversityInventors: Shigeharu Takagi, Mitsuru Higa
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Publication number: 20100151351Abstract: The invention relates to a monomer (6, 14) carrying an imidazole-type heterocycle (3). According to the invention, the chemical structure of said monomer (6, 14) comprises at least one unit of formula (I) wherein R1 comprises an alkenyl grouping and R2 comprises a grouping for protecting one of the nitrogen atoms of the heterocycle. The invention also relates to a monomer carrying a benzimidazole-type heterocycle, and to protected polymers obtained from said monomers, deprotected polymers produced by the protected polymers, a proton exchange membrane based on deprotected polymers, and a fuel cell provided with said membrane. Furthermore, the invention relates to methods for producing the above-mentioned monomers and polymers.Type: ApplicationFiled: May 29, 2007Publication date: June 17, 2010Applicants: PEUGEOT CITROEN AUTOMOBILES S.A., CNRS (Centre National de la Recherche Scientifique )Inventors: Xavier Glipa, Bruno Ameduri, Louis Delon, Deborah Jones, Jacques Roziere, Guillaume Frutsaert
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Patent number: 7714028Abstract: 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: February 27, 2008Date of Patent: May 11, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Dennis Edward Curtin, Edward George Howard
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Publication number: 20100111892Abstract: The present invention is directed to crosslinked cation exchange polymers comprising a fluoro group and an acid group and being a polymerization product of at least three monomers. Pharmaceutical compositions of these polymers are useful to bind potassium in the gastrointestinal tract.Type: ApplicationFiled: August 22, 2009Publication date: May 6, 2010Applicant: RELYPSA, INC.Inventors: Han-Ting Chang, Dominique Charmot, Mingjun Liu, Werner Strüver
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Patent number: 7683100Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation 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 positively charged material using the macroporous cation exchange resins, methods of making chromatographic columns that contain the macroporous cation exchange resins, methods of making filter elements that contain the macroporous cation exchange resins, and methods of making porous composite materials that contain the macroporous cation exchange resins are described.Type: GrantFiled: December 21, 2005Date of Patent: March 23, 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: 7674836Abstract: Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.Type: GrantFiled: July 28, 2006Date 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: 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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Publication number: 20100029914Abstract: To provide a medium suitable for high speed/high resolution, rich in hydrophilicity and resistant to a high concentration aqueous alkaline solution. A medium comprising crosslinked polymer particles containing from 20 to 95 mol % of repeating units derived from a (meth)acryloyl monomer represented by the formula (1): wherein R2 is a hydrogen atom or a C1-4 alkyl group, R1 is —NR3—R4-R5 or —O—R4-R5, R3 is a hydrogen atom or a C1-4 alkyl group, R4 is a C6-15 alkylene group containing an alicyclic ring or a C4-8 linear alkylene group, and R5 is a halogen atom, an alcoholic OH group, an amino group, a glycidyl group or an epoxy group.Type: ApplicationFiled: June 8, 2006Publication date: February 4, 2010Applicant: TOSOH CORPORATIONInventors: Katsuo Komiya, Yuji Kubo, Masazumi Hasegawa, Sanae Hasegawa
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Patent number: 7625955Abstract: A porous article which is formed from a polymeric material, in which characteristics of the surface of the article provided by the polymeric material are modified by having grafted to it chains of polymerized vinyl monomer units, in which the chains each comprise a number of units of a first vinyl monomer and include a unit of a second vinyl monomer which is different from the first vinyl monomer. Preferably, the ratio of the number of units of the first vinyl monomer in each chain to the number of units of the second vinyl monomer is not more than about 60. When the number of second vinyl monomer units in each chain is one, the mean number of first vinyl monomer units in each chain will be not more than 60.Type: GrantFiled: August 11, 2003Date of Patent: December 1, 2009Assignee: Freudenberg Nonwovens LPInventors: Giovanni Gentilcore, Tracy Hoar
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Publication number: 20090274943Abstract: There are provided a new crosslinked polymer electrolyte excellent in water resistance and solvent resistance, high in heat resistance, inexpensive and low in methanol permeability, and suitable for the proton conductive membrane of a fuel cell, by means of the crosslinked polymer electrolyte obtained by the following (1) or (2), and its production method. (1) A compound having two or three or more reactive groups is reacted with a polymer electrolyte. (2) A compound having two or three or more reactive groups is reacted with a polymer to obtain a crosslinked polymer and then an ion exchange group is introduced into the resultant polymer.Type: ApplicationFiled: April 4, 2006Publication date: November 5, 2009Applicant: Sumitomo Chemical Company, LimitedInventor: Ken Yoshimura
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Publication number: 20090234033Abstract: To provide a separating agent for IgG purification, whereby IgG can be separated and purified efficiently at a high purity, and a method for purifying an IgG using it. A separating agent for IgG purification, characterized in that a polyacrylic acid and/or a polymethacrylic acid is immobilized on a carrier, and a method for purifying an IgG monomer, characterized in that a mixture containing an IgG monomer and an impurity containing polymeric IgG is contacted to the separating agent and eluted.Type: ApplicationFiled: April 24, 2007Publication date: September 17, 2009Inventor: Koji Nakamura
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Patent number: 7589129Abstract: The present invention relates to the field of acrylic polymers and in particular to their modification with the purpose of the formation of compounds of still higher molecular masses. Plastic materials of the type of acrylic universal polymer (PAU), e.g. sold under the tradename “POLYGOR”, can be used as starting material. The acrylic starting material is then modified by appropriate modifier compounds. In this way modified polymers can have molecular weights in the range between 2×105 and 15×107 a.u. and are water-soluble. This allows to use them as flocculation, coagulation, ion-exchange means and as additives to surface active agents for raising their washing and foaming capabilities.Type: GrantFiled: February 11, 2005Date of Patent: September 15, 2009Assignee: Waltech, AGInventor: Igor Gubych
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Patent number: 7582684Abstract: Ion exchange resins are described that are hydrophilic, crosslinked (meth)acrylic copolymers. The ion exchange resins are macroporous, have a surface area of at least 50 m2/g, and an average particle size of at least 20 micrometers. Additionally, chromatographic columns containing the ion exchange resins, composite materials containing the ion exchange resin, filtration elements containing the ion exchange resin, methods of preparing the ion exchange resins, and methods of separating or purifying negatively or positively charged materials with the ion exchange resins are described.Type: GrantFiled: February 17, 2005Date of Patent: September 1, 2009Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, James I. Hembre
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Patent number: 7540962Abstract: The invention relates to a method of preparing spheroid polymer particles having a narrow size distribution by dispersion polymerization. This method comprises the steps of: providing a two-phase system in the form of a dispersion comprising an organic phase of droplets dispersed in an aqueous medium, mixing said organic phase in said aqueous medium under agitation without using a dispersion stabilizing agent to stabilize the dispersion, wherein the organic phase comprises at least a crosslinkable monomer, a polymerization initiator and an organic solvent for said monomer, and allowing the crosslinkable monomers to polymerize, while the two-phase system is agitated.Type: GrantFiled: May 31, 2007Date of Patent: June 2, 2009Assignee: Varian, B.V.Inventor: Frans Biermans
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Publication number: 20090118382Abstract: The invention relates to ion-exchange materials comprising a hydrophobic support resin having grafted side chains, wherein the side chains have a surfactant-type structure and comprise ion-exchange groups, and the ion-exchange material is obtainable by radical grafting of the side chains using a radical initiator containing at least one peroxide group. By means of the surfactant-type structure and the specific radical initiator, a regiospecific and particularly uniform arrangement of the side chains on the support resin is achieved which in addition enables outstanding and uniform hydration of the ion-exchange groups. This is expressed, in particular, in improved signal asymmetries for bromide and nitrate.Type: ApplicationFiled: April 4, 2007Publication date: May 7, 2009Applicant: METROHM AGInventors: Michael Raskop, Andreas Seubert, Andreas Grimm
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Publication number: 20090099393Abstract: A solid (i.e., heterogeneous) catalyst useful for preparing an alkylene glycol from the corresponding alkylene oxide as well as a process for the catalytic hydration of an alkylene oxide to an alkylene glycol utilizing such a catalyst are provided. The catalyst of the present invention is based on an ion exchange resin including polystyrene crosslinked with from about 2 to about 10 weight (wt.) % divinyl benzene. The ion exchange resin further includes quaternary ammonium groups or quaternary phosphonium groups. The process includes reacting water and an alkylene oxide in at least one reactor under conditions to form an alkylene glycol, wherein the at least one reactor includes a catalyst based on an ion exchange resin that includes polystyrene crosslinked with from about 2 to about 10 weight (wt.) % divinyl benzene.Type: ApplicationFiled: October 15, 2007Publication date: April 16, 2009Applicant: SD LIZENZVERWERTUNGSGESELLSCHAFT MBH & CO. KGInventors: William Crudge, Jaap Willem van Hal, Xiankuan Zhang
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Patent number: 7435498Abstract: A method is provided for making a crosslinked polymer electrolyte, typically in the form of a membrane for use as a polymer electrolyte membrane in an electrolytic cell such as a fuel cell, by trimerization of nitrile groups contained on groups pendant from the polymer. The resulting polymer electrolyte membrane comprises a highly fluorinated polymer comprising: a perfluorinated backbone, first pendent groups which comprise sulfonic acid groups, and crosslinks comprising trivalent groups according to the formula: The first pendent groups are typically according to the formula: —R1—SO3H, where R1 is a branched or unbranched perfluoroalkyl or perfluoroether group comprising 1-15 carbon atoms and 0-4 oxygen atoms, most typically —O—CF2—CF2—CF2—CF2—SO3H or —O—CF2—CF(CF3)—O—CF2—CF2—SO3H.Type: GrantFiled: May 22, 2006Date of Patent: October 14, 2008Assignee: 3M Innovative Properties CompanyInventors: Michael A. Yandrasits, Steven J. Hamrock, Werner M. Grootaert, Miguel A. Guerra, Naiyong Jing
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Publication number: 20080234398Abstract: The present invention relates to a process for producing novel monodisperse cation exchangers of the poly(meth)acrylic acid type, the ion exchangers themselves, and also use thereof and to the use of intermediate products as supports for enzymes and the systems resulting therefrom as enzyme catalysts for the preparation of fuels and in transesterification reactions and esterification reactions.Type: ApplicationFiled: February 19, 2008Publication date: September 25, 2008Inventors: Reinhold Klipper, Wolfgang Podszun, Michael Schelhaas, Pierre Vanhoorne, Hans-Karl Soest, Ulrich Litzinger
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Patent number: 7326737Abstract: A method is provided for making a crosslinked polymer by direct fluorination of a non-perfluorinated polymer comprising first pendent groups which comprise sulfonyl halide groups or by direct fluorination of a polymer mixture of a first polymer which is a non-perfluorinated polymer and a second polymer which comprises first pendent groups which comprise sulfonyl halide groups. Such crosslinked polymers or polymer mixtures may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells and which should demonstrate increased durability in fuel cell use.Type: GrantFiled: January 3, 2007Date of Patent: February 5, 2008Assignee: 3M Innovative Properties CompanyInventor: Miguel A. Guerra
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Patent number: 7323109Abstract: This invention relates to a composition of matter comprising a functionalized mordant polymer comprising a cationic polymer having an adsorbed metal-ion sequestrant, wherein the metal-ion sequestrant has a stability constant greater than 1010 with iron (III). It further relates to an article comprising said composition and a method of removing target metal-ions from an environment comprising contacting the environment with said composition.Type: GrantFiled: June 15, 2004Date of Patent: January 29, 2008Assignee: Eastman Kodak CompanyInventor: Joseph F. Bringley
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Patent number: 7294654Abstract: A heterogenous hybrid thermally regenerable salt sorbent resin is formed from a hybrid precursor resin. The hybrid precursor resin is formed by intimately mixing a dry, solid crosslinked macroporous copolymer with a solution containing a polyunsaturated monomer, a monoethylenically unsaturated monomer containing a haloalkyl group and a polymerization initiator, followed by heating to cause polymerization. The hybrid precursor resin is then treated with a weak base, then subjected to hydrolysis conditions to form, respectively, weak base groups and weak acid groups to produce the hybrid thermally regenerable salt sorbent resin.Type: GrantFiled: March 29, 2005Date of Patent: November 13, 2007Assignee: Novation Environmental Technologies, Inc.Inventors: Roger E. Johnson, Gerald Colombo
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Patent number: 7265159Abstract: Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.Type: GrantFiled: July 22, 2004Date of Patent: September 4, 2007Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Olaf Halle, Claudia Schmid, Wolfgang Podszun, Rüdiger Seidel, Hans-Karl Soest
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Patent number: 7173067Abstract: A method is provided for making a crosslinked polymer by direct fluorination of a non-perfluorinated polymer comprising first pendent groups which comprise sulfonyl halide groups or by direct fluorination of a polymer mixture of a first polymer which is a non-perfluorinated polymer and a second polymer which comprises first pendent groups which comprise sulfonyl halide groups. Such crosslinked polymers or polymer mixtures may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells and which should demonstrate increased durability in fuel cell use.Type: GrantFiled: December 17, 2003Date of Patent: February 6, 2007Assignee: 3M Innovative Properties CompanyInventor: Miguel A. Guerra
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Patent number: 7169822Abstract: A polymeric actuator of simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement. The polymeric actuator includes an ion-exchange resin product and metal electrodes. The ion-exchange resin product contains an alkylammonium. The metal electrodes are formed on the surface of the ion-exchange resin product and are insulated from each other. The polymeric actuator operates as an actuator by applying a potential difference between the metal electrodes when the ion-exchange resin product is in water-containing state to allow the ion-exchange resin product to undergo bending or deformation.Type: GrantFiled: June 14, 2004Date of Patent: January 30, 2007Assignees: Eamex Corporation, National Institute of Advanced Science and TechnologyInventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
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Patent number: 7166645Abstract: The alkaline saponification of acrylonitrile bead polymers provides weakly acidic cation exchangers with little intrinsic color and with reduced residual nitrogen content if the saponification is begun at a temperature T1 of from 70 to 120° C. and, once a degree of saponification of at least 65% has been reached, is completed at a temperature T2 of from 120 to 180° C.Type: GrantFiled: April 21, 2004Date of Patent: January 23, 2007Assignee: Lanxess Deutschland GmbHInventors: Michael Happ, Dieter Irmscher, Wolfgang Podszun, Rudiger Seidel, Wolfgang Zarges
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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: 7112614Abstract: A method is provided for obtaining crosslinked polymers, particularly fluorinated polymers having pendent sulfonic acid groups, by crosslinking through pendent groups which include a sulfonyl chloride group (—SO2Cl). The sulfonyl chloride group may be removed by application of electromagnetic radiation, typically in the ultraviolet band, or a radical initiator, leaving behind a radical which readily binds covalently to other polymer strands or to crosslinking agents to form crosslinks. Typically, the polymer is made by providing a polymer comprising pendent groups which include a group according to the formula —SO2F and converting at least a portion of the —SO2F groups to —SO2Cl. After crosslinking, the remaining —SO2F groups may be converted to sulfonic acid groups, yielding a crosslinked polymer electrolyte. Such crosslinked polymer electrolytes may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells.Type: GrantFiled: December 8, 2003Date of Patent: September 26, 2006Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Steven J. Hamrock
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Patent number: 7098253Abstract: Ion exchange resins are described that are hydrophilic, crosslinked (meth)acrylic copolymers. The ion exchange resins are macroporous, have a surface area of at least 50 m2/g, and an average particle size of at least 20 micrometers. Additionally, chromatographic columns containing the ion exchange resins, composite materials containing the ion exchange resin, filtration elements containing the ion exchange resin, methods of preparing the ion exchange resins, and methods of separating or purifying negatively or positively charged materials with the ion exchange resins are described.Type: GrantFiled: May 20, 2004Date of Patent: August 29, 2006Assignee: 3M Innovative Properties CompanyInventors: Jerald K. Rasmussen, James I. Hembre
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Patent number: 7094469Abstract: A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is formed from a monomer having formula: [T—SO2Y—SO2T?]?M+ in which —T and T? are identical or different and comprise an organic radical bearing at least one active polymerization function such as an unsaturation or a ring that can be opened; —M+ comprises an inorganic cation.Type: GrantFiled: August 28, 2001Date of Patent: August 22, 2006Assignee: Mykrolis CorporationInventor: Wilson Moya
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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: 7037949Abstract: A reactive liquid is coated on an ion exchange resin precursor membrane for the hydrolysis treatment. Preferably, a reactive liquid having a viscosity of not lower than 50 mPa·s or a small surface tension is used. Said precursor membrane is also subjected to the hydrolysis treatment under constraint, while the precursor membrane is maintained in a widened or a stretched state.Type: GrantFiled: February 7, 2002Date of Patent: May 2, 2006Assignee: Asahi Kasei Chemicals CorporationInventors: Naoto Miyake, Takuya Hasegawa
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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: 7001929Abstract: The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups. The proton conductive membrane comprises a nitrogen-containing compound that can be mixed with water in arbitrary proportions and has a boiling point of not lower than 100. degree. C. and a proton conductive resin which has sulfonic acid ion-exchange groups, wherein the nitrogen-containing compound is contained in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the proton conductive resin.Type: GrantFiled: August 15, 2003Date of Patent: February 21, 2006Assignees: JSR Corporation, Honda Giken Kogyo Kabushiki KaishaInventors: Kohei Goto, Mayumi Kakuta, Fusazumi Masaka, Kiyonori Kita, Naoki Mitsuta, Masaru Iguchi, Hiroshi Soma, Nagayuki Kanaoka
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Patent number: 6984669Abstract: The present invention provides a fluorinated cation exchange membrane comprising at least two layers, a first layer made of a fluoropolymer having sulfonic acid groups and a second layer made of a fluoropolymer having carboxylic acid groups on the cathode side thereof, wherein when an electrolytic soda process is conducted using the cation exchange membrane as a diaphragm between an anode compartment and a cathode compartment, the water transport number through the cation exchange membrane is at least 4.8 mol/F (F: Faraday) under operating conditions such that the brine concentration in the anode compartment is 200 g/L, the sodium hydroxide concentration in the cathode compartment is 32 mass %, the current density is 5 kA/m2, and the temperature is 90° C. The fluorinated cation exchange membrane of the present invention gives an excellent effect such that a uniform catholyte concentration can be maintained even when installed in an electrolytic cell having no special circulating means.Type: GrantFiled: November 10, 2003Date of Patent: January 10, 2006Assignee: Asahi Glass Company, LimitedInventors: Takuo Nishio, Yoshihiko Saito, Tetsuji Shimohira
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Patent number: 6924317Abstract: The present invention relates to a process for producing monodisperse anion-exchanger gels with high stability, purity and coarse particle size greater than 800 ?m starting from a monodisperse bead polymer with a swelling index of from 2.5 to 7.5 and more than one subsequent feed procedure without any separation between the polymerization steps and then modifying to give the anion exchanger.Type: GrantFiled: April 1, 2003Date of Patent: August 2, 2005Assignee: Bayer AktiengesellschaftInventors: Lothar Feistel, Gerold Schade, Hubertus Mittag
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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: 6878409Abstract: The present invention relates to polymer membranes for separating olefins from paraffins which have the similar molecular size and close boiling point. More particularly, it relates to a silver salt-containing facilitated transport membrane for olefin separation, and also a method for producing the same. An object of the present invention is to provide a silver salt-containing facilitated transport membrane for olefin separation having improved stability, and also a method for preparing the same, which exhibits no deterioration in membrane performance even when operated for an extended period of time. The facilitated transport membrane for olefin/paraffin separation of the present invention comprises a polymer, a silver salt, and a phthalate compound represented by the following formula (1) wherein R denotes an alkyl group of 2 to 8 carbon atoms or a phenyl group.Type: GrantFiled: February 9, 2004Date of Patent: April 12, 2005Assignee: Korea Institute of Science and TechnologyInventors: Hoon Sik Kim, Yong Soo Kang, Byung Gwon Lee, Hyun Joo Lee, Jae Hee Ryu
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Patent number: 6864314Abstract: The present invention relates to a block polymeric material. Typically the block polymer comprises units capable of having an average cationic charge density of about 15 or less, preferably 5 or less, more preferably from about 0.05 to about 5, even more preferably from about 0.05 to about 2.77, even more preferably from about 0.1 to about 2.75, most preferably from about 0.75 to about 2.25 units per 100 daltons molecular weight at a pH of from about 4 to about 12. The polymeric material is a suds enhancer and a suds volume extender for personal care products such as soaps and shampoos. The compositions have increased effectiveness for preventing re-deposition of grease during hand and body washing. The polymers are also effective as a soil release agent in fabric cleaning compositions.Type: GrantFiled: October 30, 2000Date of Patent: March 8, 2005Inventors: Dominic Wai-Kwing Yeung, Vance Bergeron, Jean-Francois Bodet, Mark Robert Sivik, Bernard William Kluesener, William Michael Scheper