Treated With Nitrogen-containing Material Patents (Class 521/32)
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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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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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Patent number: 7416845Abstract: Provided are a pH dependent ion exchange material having a carboxyl group, an amino group, and a polyethylene oxide moiety, which is used for isolating a nucleic acid, a solid substrate having the material immobilized on its surface, and a method of isolating a nucleic acid using the material or the solid substrate.Type: GrantFiled: May 9, 2006Date of Patent: August 26, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-myeong Park
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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: 7320754Abstract: The invention relates to a method of preparing multi-modal anion-exchange ligands, which comprises providing a cyclic three-functional scaffold comprising an amine, a carbonyl and a thiol; optionally derivatisation of the amine of the scaffold to provide an anion-exchanging group and/or to protect the amine; and aminolysis to open up the derivative by adding a reagent comprising an amine coupled to a residue R in order to add said amine to the carbonyl carbon of the opened scaffold. The scaffold is advantageously homocysteine thiolactone. In one embodiment, the method comprises an additional step of immobilising the opened scaffold to a base matrix to provide a separation medium, such as a chromatography medium.Type: GrantFiled: March 5, 2004Date of Patent: January 22, 2008Assignee: GE Healthcare Bio-Sciences ABInventors: Ulrika Carlsson, Jean-Luc Maloisel, Nicolas Thevenin
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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: 7232520Abstract: Embodiments of the present invention are directed to porous resins for solid phase extractions. The resins feature at least one hydrophobic component, at least one hydrophilic component and at least one ion exchange functional group. The resins exhibit superior wetting and ion exchange performance.Type: GrantFiled: June 10, 1999Date of Patent: June 19, 2007Assignee: Waters Investments LimitedInventors: Peter Jeng Jong Lee, John E. O'Gara
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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: 7098252Abstract: The present invention relates to a method of preparing porous macroreticular polymers comprising polymerizing one or more monoethylenically unsaturated monomers in the presence of a silicone based porogen.Type: GrantFiled: April 1, 2002Date of Patent: August 29, 2006Assignee: Rohm and Haas CompanyInventors: Biwang Jiang, Garth Rockwood Parker, Jr.
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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: 7081484Abstract: An anion exchange membrane comprising a resin phase which contains from 20 to 96 mass % of a polymer having repeating units represented by the following formula (1): wherein A is a C3-8 alkylene group or an alkyleneoxyalkyl group having a total carbon number of from 4 to 9, each of R1, R2 and R3 is a hydrogen atom, a C1-6 alkyl group or a hydroxyalkyl 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, and from 4 to 80 mass % of a thermoplastic polymer having no ion exchange groups, substantially uniformly.Type: GrantFiled: July 23, 2001Date of Patent: July 25, 2006Assignee: Asahi Glass Company, LimitedInventors: Yoshio Sugaya, Hiroshi Toda, Yukio Matsumura, Hirohisa Kubota
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Patent number: 7077964Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.Type: GrantFiled: October 17, 2003Date of Patent: July 18, 2006Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
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Patent number: 7067059Abstract: The present invention relates to a method of generating a separation medium comprising mixed mode cation-exchanger ligands coupled to a base matrix, which method comprises to provide a scaffold comprising a functional group and exhibiting a cyclic core structure; derivatise the scaffold with a reagent comprising a reactive group coupled to a residue R by reacting the functional group of the scaffold with said reactive group; open the cyclic structure of the resulting derivative; and react the product with a base matrix comprising a reactive group. The scaffold presents at least two functionalities; one sulphur-comprising group for coupling to the base matrix and one group that can be transformed into an ionic group.Type: GrantFiled: September 12, 2002Date of Patent: June 27, 2006Assignee: GE Healthcare Bio-Sciences ABInventors: Jean-Luc Maloisel, Nicolas Thevenin
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Patent number: 7053129Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers by (a) reacting monomer droplets made from monovinylaromatic compounds and polyvinylaromatic compounds, and optional porogens and/or initiators, (b) amidomethylating the resultant monodisperse, crosslinked bead polymers with phthalimide derivatives, (c) converting the amidomethylated bead polymers to aminomethylated bead polymers, and (d) alkylating the aminomethylated bead polymers.Type: GrantFiled: August 21, 2000Date of Patent: May 30, 2006Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Rüdiger Seidel, Alfred Mitschker, Holger Lütjens
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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: 6911483Abstract: The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C2-C4) alkylated and cross-linked regenerated cellulose, in which the level of derivitization with the QA-groups is 1.4 milli-equivalents per dry gram (meq/g) or greater.Type: GrantFiled: December 8, 2000Date of Patent: June 28, 2005Assignee: Massey UniversityInventors: John Stephen Ayers, David Francis Elgar, Margaret Mary Agnes Egan
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Patent number: 6881761Abstract: Disclosed are (1) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, (2) an alkali-resistant, high-strength porous polymer particle having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, a part of the ester bonds being saponified and converted to a hydroxyl group(s), (3) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, the porous polymer particles being treated with an alkaline solution to generate a hydroxyl and/or a carboxyl group on a surface of the substrate, (4) an anion exchanger comprising any one of the particles (1) to (3) above, (5) a packing material for anion chromatography comprising the anion exchanger (4) above, (6) a column for anion chromatography using the anion exchanger (4) above, and (7) a method for measType: GrantFiled: March 7, 2001Date of Patent: April 19, 2005Assignee: Showa Denko K.K.Inventors: Takashi Kotsuka, Kuniaki Shimbo, Hiroshi Suzuki, Hisako Sakuma, Toshio Tokuda
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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
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Patent number: 6844371Abstract: An object of the present invention is to provide a separation functional material having more excellent adsorptive separation performance than previously. In order to attain this object, separation functional materials of the present invention are characterized in that they are formed by introducing a polymer side chain derived from a p-haloalkylstyrene onto the backbone of an organic polymer base and introducing a functional group onto the polymer side chain.Type: GrantFiled: October 20, 2000Date of Patent: January 18, 2005Assignee: Ebara CorporationInventors: Makoto Komatsu, Kazuyoshi Takeda, Kunio Fujiwara, Takeshi Takai
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Patent number: 6841285Abstract: The electrochemical performance of an ion-exchange membrane in a fuel cell system may be improved by impregnating therein a perfluoroamine. The amine may be primary, secondary or tertiary. Further, the amine is preferably water insoluble or only slightly water soluble. For example, the amine may be perfluorotriamylamine or perfluorotributylamine. Use of such a membrane system within a fuel cell may allow high or low temperature operation (i.e. at temperatures greater than 100° C. or less than 0° C.) as well as operation at low relative humidity.Type: GrantFiled: August 28, 2002Date of Patent: January 11, 2005Assignee: Ballard Power Systems Inc.Inventors: David P. Wilkinson, Joy A. Roberts, Nengyou Jia, Eagranie Yuh, Shanna D. Knights, Jean St-Pierre
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Patent number: 6825386Abstract: Provided are a catalyst of high activity and good heavy substance resistance and alcohol resistance for production of bisphenols, and a method for producing bisphenols with the catalyst. The catalyst is a sulfonic acid-type cation-exchange resin modified with (a) a pyridinealkanethiol and (b) an aminoalkanethiol and/or a thiazolidine; and the method comprises reacting a phenol and a ketone in the presence of the catalyst for producing bisphenols.Type: GrantFiled: August 27, 2003Date of Patent: November 30, 2004Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Masahiro Iwahara, Tetsuya Saruwatari
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Patent number: 6759442Abstract: An object of the present invention is to provide a packing material for solid phase extraction, ensuring excellent recovery of not only a hydrophobic substance but also an ionic substance by having hydrophobicity and an ion exchange group at the same time, and a solid phase extraction method, a packing apparatus, and a method for treating a sample, using the packing apparatus. A packing material for solid phase extraction of the present invention is a particle obtained by copolymerizing a hydrophobic monomer (A) and a hydrophilic monomer (B) and introducing thereinto an ion exchange group, in which the ion exchange group is introduced without impairing the hydrophobic site. The present invention also provides a solid phase extraction method, a packing apparatus for solid phase extraction and a method for treating a sample, using the packing material.Type: GrantFiled: June 4, 2001Date of Patent: July 6, 2004Assignee: Showa Denko Kabushiki KaishaInventors: Ryuji Takahashi, Hiroshi Suzuki
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Patent number: 6740684Abstract: A strong-acid cation exchange resin in acid form is contacted with an alkylcarhamoyl alkylthioester in the presence of water for producing a strong-acid cation exchange resin comprising a plurality of acid groups being partially neutralized with a mercaptoalkylamine. The produced partially neutralized cation exchange resin is useful as a catalyst in a process of producing a bisphienol by reaction of a phenolic compound with a carhonyl compound.Type: GrantFiled: February 21, 2003Date of Patent: May 25, 2004Assignee: Dow Global Technologies Inc.Inventors: Mihail Paliuras, Damian M. Feord, Johann-Wilhelm Frey
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Publication number: 20040082744Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.Type: ApplicationFiled: October 17, 2003Publication date: April 29, 2004Inventors: Reinhold Klipper, Werner Struver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lutjens
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Patent number: 6723758Abstract: Graft polymeric membranes and methods for making graft polymeric membranes have one or more trifluorovinyl aromatic monomers that are radiation graft polymerized to a polymeric base film. The membranes comprise a polymeric base film to which has been graft polymerized substituted &agr;,&agr;,&bgr;-trifluorostyrene and/or &agr;,&agr;,&bgr;-trifluorovinylnaphthylene monomers, which are activated towards graft polymerization. As ion-exchange membranes, the membranes are suitable for use in electrode apparatus, including membrane electrode assemblies in, for example, fuel cells. The membranes can also be crosslinked.Type: GrantFiled: August 21, 2001Date of Patent: April 20, 2004Assignee: Ballard Power Systems Inc.Inventors: Charles Stone, Alfred E. Steck, Biswajit Choudhury
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Patent number: 6699913Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers having strongly basic functional groups either in the center of the resin particle or in the shell of the resin particle, as well as to their use.Type: GrantFiled: August 21, 2000Date of Patent: March 2, 2004Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Ulrich Schnegg, Rüdiger Seidel, Hans-Karl Soest, Alfred Mitschker, Holger Lütjens
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Patent number: 6696385Abstract: The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a thiol-containing amine compound and which is employed as a catalyst for producing bisphenol, during preservation. In the present invention, a modified cation-exchange resin is packed together with water into a container while regulating the surface area of the container to 0.5 m2 or less per liter of the resin and then the container is sealed up so that the resin is preserved in a state of being soaked in water.Type: GrantFiled: May 13, 2003Date of Patent: February 24, 2004Assignee: Mitsubishi Chemical CorporationInventors: Koichi Hayashi, Hideto Hayashi
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Patent number: 6667349Abstract: The present invention relates to a process for preparing gel-like anion exchangers by aminating crosslinked gel-like styrene divinybenzene bead polymers that contain halogenoalkyl groups in the presence of an inorganic salt and in the absence of organic solvents.Type: GrantFiled: October 11, 2000Date of Patent: December 23, 2003Assignee: Bayer AktiengesellschaftInventors: Holger Lütjens, Reinhold Klipper, Georg Martin, Alfred Mitschker, Michael Holzbrecher
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Patent number: 6664328Abstract: This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having the structural formula: wherein R represents an alkyl group containing from 1 to about 10 carbon atoms or a hydrogen atom, and wherein R1 and R2 can be the same or different and represent hydrogen atoms or a moiety of the structural formula: wherein the R3 groups in repeat units and in different repeat units can be the same or different and represent hydrogen atoms or alkyl groups containing from 1 to about 4 carbon atoms, wherein n and x represents integers from 1 to about 10, with the proviso that R1 and R2 can not both be hydrogen atoms.Type: GrantFiled: June 10, 2003Date of Patent: December 16, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Stephan Rodewald, Steven Kristofer Henning, Brian Earl Burkhart
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Patent number: 6649663Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.Type: GrantFiled: August 21, 2000Date of Patent: November 18, 2003Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
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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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Publication number: 20030187080Abstract: The present invention relates to a method of preparing porous macroreticular polymers comprising polymerizing one or more monoethylenically unsaturated monomers in the presence of a silicone based porogen.Type: ApplicationFiled: April 1, 2002Publication date: October 2, 2003Inventors: Biwang Jiang, Garth Rockwood Parker
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Patent number: 6627667Abstract: The invention is directed to a process for modifying a water soluble polymer, said process comprising modifying a polymer containing amine groups, by reacting at least one of said amine groups with activated ester, said ester being the reaction product of a carboxyl activator and the carboxyl group of a molecule R—COOH, said R-group being a functional group, to produce a reaction mixture containing a polymer, said polymer containing at least one amide group; subjecting said reaction mixture to at least ion exchange chromatography to purify said reaction mixture, said purification comprising at least partly removing the said reaction product, and/or carboxyl activator.Type: GrantFiled: July 3, 2001Date of Patent: September 30, 2003Assignee: Fuji Photo Film B.V.Inventors: Sebastianus Gerardus J. M. Kluijtmans, Jan Bastiaan Bouwstra, Yuzo Toda
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Patent number: 6610753Abstract: The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and (II) wherein X represents hydrogen or an alkali metal ion, by reacting a weak-base anion exchanger bearing primary amino groups with monochloro-acetic acid and/or an alkali metal salt of monochloroacetic acid at a temperature of from 70 to 110° C. and a pH of from 7 to 11.Type: GrantFiled: August 10, 1999Date of Patent: August 26, 2003Assignee: Bayer AktiengesellschaftInventors: Holger Lütjens, Klaus Rall, Axel Ingendoh, Reinhold Klipper
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Patent number: 6582811Abstract: A method of purification of physiological liquids of organism has the step of passing a physiological liquid through a material which has a size, a shape, and a structure selected so as to remove toxic compounds from the physiological liquid and is composed of a partially chloromethylated porous highly crosslinked styrene or divinylbenzene copolymer which initially have surface exposed chloromethyl groups in which thereafter chlorine is replaced with an element which forms different surface exposed functional groups with a greater hydrophilicity and greater biocompatibility than that of the chloromethyl group.Type: GrantFiled: July 13, 1999Date of Patent: June 24, 2003Assignee: Renal Tech International LLCInventors: Vedirn Davankov, Maria Tsyurupa, Ludmilla Pavlova, Dzidra Tur
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Publication number: 20030114544Abstract: 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: ApplicationFiled: November 19, 2002Publication date: June 19, 2003Inventors: Reinhold Klipper, Olaf Halle, Claudia Schmid, Wolfgang Podszun, Rudiger Seidel, Hans-Karl Soest
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Patent number: 6569910Abstract: Ion exchange resin granules containing a crosslinked polymerized &agr;,&bgr;-unsaturated acid, like acrylic acid, or a vinyl monomer containing an amino group, like polyvinylamine, and methods of manufacturing the resin, are disclosed.Type: GrantFiled: May 11, 2000Date of Patent: May 27, 2003Assignee: BASF AktiengesellschaftInventors: Ralph Spindler, Thomas W. Beihoffer, Michael M. Azad, Constance M. Noe
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Publication number: 20030091530Abstract: Provided in a phosphate ion adsorbent containing a weakly basic anion exchange resin as an active ingredient which aims at providing preventives and/or remedies for hyperphosphatemia having a high selectivity for the adsorption of phosphate ion and showing an effect of lowering blood phosphorus level and another effect of suppressing phosphorus excretion into the urine.Type: ApplicationFiled: September 12, 2002Publication date: May 15, 2003Inventors: Takeshi Goto, Kazuhisa Yoshitake, Hiroshi Sorimachi, Kazuteru Moriyama
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Patent number: 6534554Abstract: Multicomponent ion exchange resin granules containing at least one acidic resin and at least one basic resin. Each granule contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin.Type: GrantFiled: May 30, 2000Date of Patent: March 18, 2003Assignee: Basf AktiengesellschaftInventors: Michael A. Mitchell, Thomas W. Beihoffer, Ralph Spindler
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Publication number: 20030050350Abstract: 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: ApplicationFiled: September 6, 2001Publication date: March 13, 2003Inventors: Gregory W. Bachman, Robert G. Loken, Julie G. Sterling, Thomas K. Mallmann
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Patent number: 6509383Abstract: The present invention provides a metal charged iminodiacetic acid (IDA) cellulose for detecting a test sample having a histidine tag. The present invention also provides methods for determining cloned protein expression and function. Additionally, the present invention includes a method for the handling of denatured proteins with subsequent renaturation in situ (parenthetically after binding to metal charged IDA cellulose). A wide range of applications are contemplated for the metal charged IDA cellulose including two-dimensional high throughput screening of proteins.Type: GrantFiled: May 15, 2001Date of Patent: January 21, 2003Assignee: The Research Foundation of State University of New YorkInventors: Paul A. Fisher, Alexander Zaika
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Publication number: 20020193454Abstract: The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and (II) 1Type: ApplicationFiled: August 10, 1999Publication date: December 19, 2002Inventors: HOLGER LUTJENS, KLAUS RALL, AXEL INGENDOH, REINHOLD KLIPPER
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Patent number: 6465580Abstract: A functional polymer having active and stable functional groups, for separation or reactive processes in chemical manufacture or analysis, has carbon-linked functional groups on dimethylene spacers; a method of preparation is from pre-existing polymers comprising polymeric 1-(vinylphenyl)ethylene repeat units, by treating with H—X in the presence of free radicals, wherein X comprises a carbon atom that is linked to the —CH[Ph-CH2CH2—]—CH2— remainder of said —CH[Ph-CH2CH2—X]—CH2— repeat unit in said product as a consequence of said reaction; the carbon atom can have characteristics selected from being sp2-hybridized and doubly bonded to an oxygen, being sp3-hybridized and singly bonded to an oxygen, being sp3-hybridized and singly bonded to a nitrogen that is also singly bonded to an sp2-hybridized carbon, being sp3-hybridized and singly bonded to a nitrogen and also to an sp2-hybridized carbon, and being sp3-hybridized and singly bondedType: GrantFiled: July 7, 2000Date of Patent: October 15, 2002Assignee: Active Materials, Inc.Inventors: Graham D. Darling, Brent R. Stranix, Jian Ping Gao
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Publication number: 20020137806Abstract: Graft polymeric membranes and methods for making graft polymeric membranes have one or more trifluorovinyl aromatic monomers that are radiation graft polymerized to a polymeric base film. The membranes comprise a polymeric base film to which has been graft polymerized substituted &agr;,&agr;,&bgr;-trifluorostyrene and/or &agr;,&agr;,&bgr;-trifluorovinylnaphthylene monomers, which are activated towards graft polymerization. As ion-exchange membranes, the membranes are suitable for use in electrode apparatus, including membrane electrode assemblies in, for example, fuel cells. The membranes can also be crosslinked.Type: ApplicationFiled: August 21, 2001Publication date: September 26, 2002Inventors: Charles Stone, Alfred E. Steck, Biswajit Choudhury
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Patent number: 6448299Abstract: A method for regenerating strong-base anion exchange resins utilizing a sequential chemical displacement technique with new regenerant formulation. The new first regenerant solution is composed of a mixture of ferric chloride, a water-miscible organic solvent, hydrochloric acid, and water in which tetrachloroferrate anion is formed and used to displace the target anions on the resin. The second regenerant is composed of a dilute hydrochloric acid and is used to decompose tetrachloroferrate and elute ferric ions, thereby regenerating the resin. Alternative chemical displacement methods include: (1) displacement of target anions with fluoroborate followed by nitrate or salicylate and (2) displacement of target anions with salicylate followed by dilute hydrochloric acid. The methodology offers an improved regeneration efficiency, recovery, and waste minimization over the conventional displacement technique using sodium chloride (or a brine) or alkali metal hydroxide.Type: GrantFiled: January 25, 2000Date of Patent: September 10, 2002Assignee: U.T. Battelle, LLCInventors: Gilbert M. Brown, Baohua Gu, Bruce A. Moyer, Peter V. Bonnesen
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Patent number: 6437012Abstract: A low-swelling, highly crosslinked, macroporous polystyrene resin containing functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction by-products, which are contained in a reaction medium. The reaction impurities can thereby be efficiently removed from the reaction medium, providing a convenient method for product purification.Type: GrantFiled: October 27, 1999Date of Patent: August 20, 2002Assignee: Agilent Technologies, Inc.Inventor: Qunjie Wang
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Patent number: 6432314Abstract: Anion exchange material surfaces are provided with zwitterionic and cationic groups, preferably by coating with a polymer formed from monomers including a zwitterionic monomer, a cationic monomer and, optionally, a termonomer providing stable binding at the substrate surface. The ion exchange materials may be used to scavenge heparin from blood by an ion exchange separation process. The zwitterionic group reduces the rate of fouling by biological materials such as proteins.Type: GrantFiled: July 26, 1999Date of Patent: August 13, 2002Assignee: Biocompatibles LimitedInventors: Joachim Storch, Robert Neil Hanley, Richard Neil Templar Freeman
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Patent number: 6410656Abstract: A cation exchanger or a chelating agent having at least structural units represented by the following formula (I), the structural units being derived from a crosslinkable monomer containing an unsaturated hydrocarbon group: wherein A represents a C3-C8 alkylene group or a C4-C9 alkoxymethylene group; L represents SO3−X+, where X+ is a counter ion coordinated with the SO3− group, or a chelate-forming functional group; and the benzene ring may be substituted with an alkyl group or a halogen atom.Type: GrantFiled: April 29, 1999Date of Patent: June 25, 2002Assignee: Mitsubishi Chemical CorporationInventors: Hirohisa Kubota, Katsuhiko Yano, Junya Watanabe, Akinori Jyo
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Publication number: 20020042451Abstract: 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): 1Type: ApplicationFiled: July 23, 2001Publication date: April 11, 2002Applicant: Asahi Glass Company, LimitedInventor: Yoshio Sugaya
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Patent number: 6359019Abstract: Graft polymeric membranes in which one or more trifluorovinyl aromatic monomers are radiation graft polymerized to a preformed polymeric base film are provided, as well as ion-exchange membranes prepared therefrom. Preferred monomers include substituted &agr;, &bgr;, &bgr;-trifluorostyrenes and trifluorovinyl naphthalenes which are activated towards the grafting reaction or facilitate the introduction of more than one ion-exchange group per monomer unit in the grafted chains. The ion-exchange membranes are useful in dialysis applications, and particularly in electrochemical applications, for example as membrane electrolytes in electrochemical fuel cells and electrolyzers.Type: GrantFiled: November 12, 1997Date of Patent: March 19, 2002Assignee: Ballard Power Systems Inc.Inventors: Charles Stone, Alfred E. Steck