Polymer Characterized By Defined Size Or Shape Other Than Bead Or Pearl Patents (Class 521/29)
  • Patent number: 10379090
    Abstract: An ion exchange chromatographic packing material is described that includes a copolymer grafted to support resin particles. The copolymer includes an ion exchange group, an ionic crosslinking group configured to ionically bind to the ion exchange group, and an adjustable ionization state group having at least a first net charge at the first pH and a second net charge at the second pH. An overall first net charge of the chromatographic packing material at the first pH is opposite in polarity to the overall second net charge of the chromatographic packing material. This allows impurities to be removed from the chromatographic packing material at the second pH.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 13, 2019
    Assignee: Dionex Corporation
    Inventor: Christopher A. Pohl
  • Patent number: 10191372
    Abstract: A polymer comprising recurring units derived from vinylanthraquinone, recurring units derived from acid labile group-substituted hydroxystyrene, and recurring units derived from hydroxystyrene is provided. The polymer is used as a base resin to formulate a positive resist composition having a high resolution and minimal LER.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: January 29, 2019
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Jun Hatakeyama, Daisuke Domon
  • Patent number: 9376540
    Abstract: Polymeric porous particles have a continuous solid phase and at least two sets of discrete pores that are isolated from each other within the continuous phase and that have different average sizes. One set of discrete pores has a larger average size than another set of discrete pores by at least 50%. At least one set of discrete pores is free of detectably different marker materials. There porous particles can be prepared using evaporative limited coalescence techniques with especially chosen discrete pore stabilizing hydrocolloids to protect the pores during formation and to provide the different average sizes.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: June 28, 2016
    Assignee: EASTMAN KODAK COMPANY
    Inventors: David Charles Boris, Teresa Joy Hosmer, Mridula Nair
  • Publication number: 20150083667
    Abstract: Provided are filtration media and matrixes comprising a pulverized powder of ion exchange resin and a polymeric binder. The resin can be pulverized to an average particle size in the range of 50 to 250 microns and can comprise a cation exchange resin, an anion exchange resin, a chelating resin, a biologically-related ion exchange resin, or combinations thereof. The media can further comprise activated carbon. The binder can be ultra high molecular weight polyethylene. The filtration media can be used to make matrixes and systems. Methods of making and using the same are also provided.
    Type: Application
    Filed: March 7, 2013
    Publication date: March 26, 2015
    Inventor: Mark R. Stouffer
  • Patent number: 8846773
    Abstract: This invention relates to a method for manufacturing a cation exchange resin, wherein the method includes the steps of: copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer to obtain a cross-linked copolymer; specifying a content of a leachable compound represented by formula (I) to be 400 ?g or less relative to 1 g of the cross-linked copolymer, wherein Z represents a hydrogen atom or an alkyl group, and l represents a natural number; and then sulfonating the cross-linked copolymer to form a sulfonylated cross-linked copolymer.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: September 30, 2014
    Assignee: Kurita Water Industries Ltd.
    Inventors: Takeo Fukui, Tetsuo Mizuniwa, Kazuhiko Tokunaga, Masako Yasutomi
  • Patent number: 8816026
    Abstract: Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60° C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85° C. The polymer beads are dried at 80-100° C. and sieved.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: August 26, 2014
    Assignee: Thermax Limited
    Inventors: Apte Ashutosh, Naik Shirish
  • Patent number: 8765825
    Abstract: The invention relates to a method for manufacturing an anion exchange resin, wherein the method includes the step of contacting a water soluble polymer containing an anionic dissociative group with a resin to produce an anion exchange resin. In the method, an amount of contact of the water soluble polymer is 0.01 to 10 mmol/L, in terms of an amount of the anionic dissociative group, relative to 1 liter of the anion exchange resin, and a wafer surface flatness (Rms) of the anion exchange resin is 4 ? or less, determined by a silicon wafer test.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: July 1, 2014
    Assignee: Kurita Water Industries Ltd.
    Inventors: Takeo Fukui, Tetsuo Mizuniwa, Kazuhiko Tokunaga, Masako Yasutomi
  • Publication number: 20140096596
    Abstract: The invention provides novel porous materials that are useful in chromatographic processes, e.g., solid phase extraction, and that provide a number of advantages. Such advantages include superior wetting characteristics, selective capture of analytes of interest, and non-retention of interfering analytes. The invention advantageously provides novel porous materials having a large percentage of larger pores (i.e. wide pores). The invention advantageously provides novel porous materials that overcome the problems of SPE of biological samples.
    Type: Application
    Filed: May 18, 2012
    Publication date: April 10, 2014
    Applicant: WATERS TECHNOLOGIES CORPORATION
    Inventors: Darryl W. Brousmiche, Kevin D. Wyndham
  • Patent number: 8617764
    Abstract: Provided are an ion conductive resin fiber, an ion conductive hybrid membrane, a membrane electrode assembly and a fuel cell. The ion conductive resin fiber comprises an inner layer including an ion conductive resin; and an outer layer including an ion conductive resin having larger EW than the ion conductive resin of the inner layer, and surrounding the inner layer. The ion conductive resin fiber and the ion conductive hybrid membrane are excellent in ion conductivity, polar solvent stability and dimensional stability under low humidity conditions. The fuel cell manufactured using the same has advantages of stable operation and management of a system at ease, removal or reduction of components related to water management, and even in case of low relative humidity, operation at high temperature of 80° C. or higher.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: December 31, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Go-Young Moon, Won-Ho Lee, Sang-Hyun Lee, Young-Il Choi, Hyuk Kim
  • Patent number: 8476324
    Abstract: A method for manufacturing an anion exchange resin, in which remaining of impurities and generation of decomposition products are suppressed and leachables are reduced, the method including the following steps (1-a) to (1-e) of: (1-a) obtaining a cross-linked copolymer by copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer; (1-b) specifying the content of a specific leachable compound to be 400 ?g or less relative to 1 g of the cross-linked copolymer; (1-c) haloalkylating the cross-linked copolymer so as to introduce 80 percent by mole or less of haloalkyl group relative to the monovinyl aromatic monomer; (1-d) removing a specific leachable compound from the haloalkylated cross-linked copolymer; and (1-e) subjecting the haloalkylated cross-linked copolymer to a reaction with an amine compound.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: July 2, 2013
    Assignees: Kurita Water Industries Ltd., Mitsubishi Chemical Corporation
    Inventors: Takeo Fukui, Tetsuo Mizuniwa, Kazuhiko Tokunaga, Masako Yasutomi
  • Publication number: 20130081643
    Abstract: The invention relates to composite materials comprising particles of at least two different additive materials and a polymer binding said additive particles together the composite material. The invention also relates to incorporating at least two different additive materials into a filter material, using the composite material.
    Type: Application
    Filed: March 31, 2011
    Publication date: April 4, 2013
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Peter Branton, Michele Mola
  • Publication number: 20130053458
    Abstract: The present invention relates to a method for the production of improved shell functionalized ion exchange resins from core/shell copolymer having a highly crosslinked core.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 28, 2013
    Inventor: William I. Harris
  • Patent number: 8349523
    Abstract: To provide an electrolyte membrane having excellent dimensional stability even upon absorption of water, a high proton conductance and high power generation performance; and a process for producing the electrolyte membrane with a high productivity. An electrolyte membrane for polymer electrolyte fuel cells, which is made mainly of an ion exchange resin and reinforced with a nonwoven fabric made of fiber of a fluororesin wherein at least some of intersecting points of the fiber are fixed, and which has, as the outermost layer on one side or each side, a layer not reinforced, made of an ion exchange resin which may be the same as or different from the above ion exchange resin, wherein the fluororesin is an ethylene/tetrafluoroethylene copolymer having a melting point of at most 240° C., and the above fixing is fixing by fusion of the fiber.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: January 8, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Seigo Kotera, Hiroyuki Watabe, Shigeru Aida
  • Patent number: 8309265
    Abstract: The present invention provides an electrolyte membrane for a fuel cell that has a minute projection cluster on one side or both sides of a polymer electrolyte membrane. Further, the present invention provides a production method of an electrolyte membrane for a fuel cell, wherein a mold comprising convex portions having a fixed planar pattern is pressed on one side or both sides of a polymer electrolyte membrane, then while concave portions of the polymer electrolyte membrane formed in the concave portions are being stretched, the mold is removed from the polymer electrolyte membrane for forming a minute projection cluster.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: November 13, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Akihiro Miyauchi, Kenichi Souma, Shuichi Suzuki, Yoshiyuki Takamori, Masahiko Ogino, Takashi Ando, Hidetoshi Honbo
  • Patent number: 8217094
    Abstract: A monolith separation medium comprising a skeletal phase and continuous pores forming a three-dimensional network structure, which has a functional group enabling the introduction of a new functional group on the surface of the skeletal phase. The skeletal phase has an average diameter of a submicron to micrometer size and is in a co-continuous structure of the non-particle-aggregation type. It is composed of an addition polymer of 1,3-bis(N,N?-diglycidylaminomethyl)cyclohexane as an epoxy compound with a bifunctional or higher amine compound, is rich in organic matters and is free from any aromatic-origin carbon atom. Thus, it is an organic polymer monolith separation medium of the non-particle-aggregation type.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 10, 2012
    Assignee: Shimadzu Corporation
    Inventors: Ken Hosoya, Mari Sakamoto, Shigeyoshi Horiike
  • Publication number: 20120024791
    Abstract: The present invention further is directed to the improved process for making by free radical polymerization a monodisperse, macroporous polymeric media with covalently bonded polymer chains. The media can be applied for chromatographic purification, resulting in polymer supports having improved protein binding capacity and resin selectivity, as well as methods relating to making and using the same.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 2, 2012
    Inventors: Martin J. Deetz, John J. Maikner
  • Patent number: 8053483
    Abstract: A gas adsorbent which has sufficient gas adsorptivity for noxious gas components in a cigarette when brought into contact with a gas stream having a high flow rate as that when it passes through a cigarette filter, and which releases a small amount of bad odor components such as amine impurities and free noxious components which adversely affect health such as aromatic compounds derived from the gas adsorbent itself, the gas adsorbent satisfying conditions (I), (II), (IV) and (V) or conditions (I), (III), (IV) and (V), as described in the specification.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Hirohisa Kubota
  • Publication number: 20110124492
    Abstract: The present invention provides a multifunctional nanocomposite with at least two components, at least one component of which is a nanoparticle that includes a polymer.
    Type: Application
    Filed: September 17, 2010
    Publication date: May 26, 2011
    Inventors: Nikolai Loukine, Anjan Das, Danielle Norton, Darren Anderson
  • Patent number: 7947748
    Abstract: 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: Grant
    Filed: December 29, 2008
    Date of Patent: May 24, 2011
    Assignee: Rohm and Haas Company
    Inventors: John David Finch, Biwang Jiang, Aaron Sarafinas, Andrew M. Savo
  • Patent number: 7893118
    Abstract: 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: Grant
    Filed: March 22, 2010
    Date of Patent: February 22, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Dennis Edward Curtin, Edward George Howard, Jr.
  • Patent number: 7833687
    Abstract: The present invention provides an aqueous dispersion of nonspherical fine resin particles having excellent storage stability and processability such as aggregation and adherence to other substances, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles. The present invention relates to an aqueous dispersion of fine resin particles characterized in that the fine resin particles are nonspherical particles with an average minor axis being 0.02 ?m or more and 1.00 ?m or less and an average ratio of a major axis to a minor axis being 2.0 or more and 5.0 or less, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: November 16, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masayoshi Kato, Takayuki Toyoda, Ryuji Higashi, Ryo Natori, Takaho Shibata, Yuya Chimoto, Takeshi Miyazaki
  • Patent number: 7771891
    Abstract: Disclosed herein are an ionic conductor including a proton conductor, a process for production thereof, and an electrochemical device (such as fuel cell) with said ionic conductor, said ionic conductor being superior in ionic conductivity, water resistance, and film forming properties. The ionic conductor is formed from a polymer in which carbon clusters having ion dissociating functional groups are bonded to each other through connecting groups. The polymer is less water-soluble and more chemically stable than a derivative composed solely of carbon clusters; therefore, it permits many ion dissociating functional group to be introduced thereinto. Moreover, if ion dissociating functional groups are introduced into also the connecting group, it is possible to prevent the concentration of ion dissociating functional groups from decreasing as the result of polymerization. The polymer can be easily synthesized by simple condensation, substitution, and hydrolysis.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 10, 2010
    Assignee: Sony Corporation
    Inventors: Koichiro Hinokuma, Bjoern Pietzak, Constance Gertrud Rost, Masafumi Ata, Yongming Li, Kazuaki Fukushima
  • Publication number: 20100130626
    Abstract: A method for manufacturing an anion exchange resin, in which remaining of impurities and generation of decomposition products are suppressed and leachables are reduced, the method including the following steps (1-a) to (1-e) of: (1-a) obtaining a cross-linked copolymer by copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer; (1-b) specifying the content of a specific leachable compound to be 400 ?g or less relative to 1 g of the cross-linked copolymer; (1-c) haloalkylating the cross-linked copolymer so as to introduce 80 percent by mole or less of haloalkyl group relative to the monovinyl aromatic monomer; (1-d) removing a specific leachable compound from the haloalkylated cross-linked copolymer; and (1-e) subjecting the haloalkylated cross-linked copolymer to a reaction with an amine compound.
    Type: Application
    Filed: April 15, 2008
    Publication date: May 27, 2010
    Applicants: KURITA WATER INDUSTRIES LTD., MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takeo Fukui, Tetsuo Mizuniwa, Kazuhiko Tokunaga, Masako Yasutomi
  • Patent number: 7714028
    Abstract: 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: Grant
    Filed: February 27, 2008
    Date of Patent: May 11, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Dennis Edward Curtin, Edward George Howard
  • Patent number: 7709542
    Abstract: A proton-exchange composite includes a polymer matrix formed from a proton-exchange polymer and ionomer particles distributed therein. The polymer has side chains with ionic groups. The particles have an average particle size of less than 20 nm and include an oligomeric ionomer that interacts with the polymer and attracts the ionic groups on its side chains. The composite may be formed by a method in which an initiator is bonded to silica particulates. The initiator is used to initiate polymerization of a precursor monomer to form a salt form of the oligomeric ionomer bonded to the silica particulates, which is then reacted with an acid to produce the oligomeric ionomer, thus forming the ionomer particles. The ionomer particles are dispersed in a solution containing a solvent and the polymer dissolved therein. The solvent is removed. The residue is cured to form the composite.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: May 4, 2010
    Assignee: Agency for Science, Technology and Research
    Inventors: Liang Hong, Zhaolin Liu, Xinhui Zhang, Bing Guo
  • Publication number: 20090227693
    Abstract: To provide a gas adsorbent which has sufficient gas adsorptivity for noxious gas components in a cigarette when brought into contact with a gas stream having a high flow rate as that when it passes through a cigarette filter, and which releases a small amount of bad odor components such as amine impurities and free noxious components which adversely affect health such as aromatic compounds derived from the gas adsorbent itself.
    Type: Application
    Filed: August 10, 2006
    Publication date: September 10, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Hirohisa Kubota
  • Patent number: 7582684
    Abstract: 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: Grant
    Filed: February 17, 2005
    Date of Patent: September 1, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, James I. Hembre
  • Publication number: 20090166295
    Abstract: The invention discloses an adsorptive ion-exchange material, including a polymer of formulas land II. The material has adsorption ability as well as ion-exchange ability for absorbing metal ions, and can be directly spun into fibers of varying diameters. The invention also discloses a method for treating wastewater containing metal ions using the disclosed adsorptive ion-exchange material.
    Type: Application
    Filed: October 8, 2008
    Publication date: July 2, 2009
    Inventors: Wen-Yi CHEN, Shu-Hui Cheng
  • Patent number: 7544278
    Abstract: 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: Grant
    Filed: April 19, 2004
    Date of Patent: June 9, 2009
    Assignee: Seventy-Seventh Meridian Corporation, LLC
    Inventors: Tejraj Aminabhavi, Padmakar V. Kulkarni, Mahadevappa Y. Kariduraganavar
  • Publication number: 20090105357
    Abstract: Disclosed herein are an ionic conductor including a proton conductor, a process for production thereof, and an electrochemical device (such as fuel cell) with said ionic conductor, said ionic conductor being superior in ionic conductivity, water resistance, and film forming properties. The ionic conductor is formed from a polymer in which carbon clusters having ion dissociating functional groups are bonded to each other through connecting groups. The polymer is less water-soluble and more chemically stable than a derivative composed solely of carbon clusters; therefore, it permits many ion dissociating functional group to be introduced thereinto. Moreover, if ion dissociating functional groups are introduced into also the connecting group, it is possible to prevent the concentration of ion dissociating functional groups from decreasing as the result of polymerization. The polymer can be easily synthesized by simple condensation, substitution, and hydrolysis.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 23, 2009
    Applicant: SONY CORPORATION
    Inventors: Koichiro Hinokuma, Bjoern Pietzak, Constance Gertrud Rost, Masafumi Ata, Yongming Li, Kazuaki Fukushima
  • Patent number: 7501380
    Abstract: A blended composition of hydrogel polymer granules capable of selectively removing toxic dissolved metal species from water containing abundant innocuous species, and spacer particles which minimize contact between contiguous polymer granules is provided for reducing the impedance of water caused to flow through a confined bed of the composition.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: March 10, 2009
    Inventor: Norman B. Rainer
  • Publication number: 20080119576
    Abstract: Size-selective hemocompatible porous polymeric adsorbents are provided with a pore structure capable of excluding molecules larger than 50,000 Daltons, but with a pore system that allows good ingress and egress of molecules smaller than 35,000 Daltons. The pore system in these porous polymeric adsorbents is controlled by the method of synthesis so that 98% of the total pore volume is located in pores smaller than 300 Angstroms (?) in diameter with a working pore size range within 100 to 300 ? in diameter. The porous polymeric adsorbents of this invention are very selective for extracting midsize proteins, such as cytokines and ?2-microglobulin, from blood and other physiologic fluids while keeping the components required for good health such as cells, platelets, albumin, hemoglobin, fibrinogen, and other serum proteins intact.
    Type: Application
    Filed: November 20, 2006
    Publication date: May 22, 2008
    Inventors: Wei-Tai Young, Robert L. Albright, Thomas D. Golobish
  • Patent number: 7279542
    Abstract: Polymeric micro- and nano-capsules formed of a spherical single hydrophobic polymer, chemically functionalised at their surface so as to comprise hydrophilic moieties thereon are disclosed. The capsules are susceptible of absorbing a perfume and of being optionally coated with an amphiphilic copolymer. They allow the preparation of perfume delivery systems, which provide a slow release of perfuming materials while improving the substantivity of the perfume on a substrate.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: October 9, 2007
    Assignee: Firmenich SA
    Inventors: Lahoussine Ouali, Djamila Latreche
  • Patent number: 7098253
    Abstract: 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: Grant
    Filed: May 20, 2004
    Date of Patent: August 29, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, James I. Hembre
  • Patent number: 7094469
    Abstract: 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: Grant
    Filed: August 28, 2001
    Date of Patent: August 22, 2006
    Assignee: Mykrolis Corporation
    Inventor: Wilson Moya
  • Patent number: 7045057
    Abstract: 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: Grant
    Filed: April 11, 2003
    Date of Patent: May 16, 2006
    Assignee: Calgon Carbon Corporation
    Inventors: Mark A. Bollinger, Chen-Chou Chiang
  • Patent number: 6992115
    Abstract: Crosslinked particles are provided that are useful in the manufacture of dielectric materials for use in electronic devices such as integrated circuits. The crosslinked particles are prepared by activating crosslinkable groups on synthetic polymer molecules, where the crosslinkable groups are inert until activated and, when activated, undergo an irreversible intramolecular crosslinking reaction to form crosslinked particles.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: January 31, 2006
    Assignee: International Business Machines Corporation
    Inventors: Craig Jon Hawker, Robert Dennis Miller, James Lupton Hedrick, Victor Yee-Way Lee
  • Patent number: 6984669
    Abstract: 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: Grant
    Filed: November 10, 2003
    Date of Patent: January 10, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Takuo Nishio, Yoshihiko Saito, Tetsuji Shimohira
  • Patent number: 6930133
    Abstract: Low density polymeric beads made by polymerizing monomeric building blocks into large crosslinked polymer molecules in porous, spherical bead form by droplet or suspension polymerization in the presence of a porogen.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: August 16, 2005
    Inventors: Robert L. Albright, Richard Mapp
  • Patent number: 6919382
    Abstract: 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: Grant
    Filed: August 31, 2001
    Date of Patent: July 19, 2005
    Assignee: The Governors of the University of Alberta
    Inventor: Dennis G. Hall
  • Patent number: 6916853
    Abstract: 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: Grant
    Filed: December 20, 2002
    Date of Patent: July 12, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Dennis Edward Curtin, Edward George Howard, Jr.
  • Patent number: 6881761
    Abstract: 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 meas
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: April 19, 2005
    Assignee: Showa Denko K.K.
    Inventors: Takashi Kotsuka, Kuniaki Shimbo, Hiroshi Suzuki, Hisako Sakuma, Toshio Tokuda
  • Patent number: 6815466
    Abstract: A colloidally and sedimentation stable coating composition containing ion exchange resins is disclosed. A method of using a colloidally and sedimentation stable coating composition containing ion exchange resins is also disclosed.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: November 9, 2004
    Assignee: Rohm and Haas Company
    Inventor: Paul Ralph Van Rheenen
  • Patent number: 6712895
    Abstract: A method of producing a bituminous foam includes supplying a bitumen in water emulsion from a tank (2) into primary and secondary heating circuits (8, 34), whereby the emulsion is heated (via heating coils 12 and 12′) and its pressure raised such that, on discharge to ambient conditions via outlet pipes (30 or 30′), the emulsion foams as water evaporates therefrom.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: March 30, 2004
    Assignee: Totalfinaelf Bitumen Limited
    Inventor: Leslie Hoad
  • Patent number: 6663775
    Abstract: A charge mosaic membrane having excellent selective permeability comprises a cationic polymer component, an anionic polymer component and a matrix component. Both of the cationic polymer component and the anionic polymer component are crosslinked particulate polymers. The matrix component is at least one polymer selected from a polysulfone resin, a polyarylate resin, a polyamide resin, a polyimide resin, a polyamideimide resin, a polyurethane resin, a fluorinated resin or a silicone resin. The charge mosaic membrane can be easily produced by conducting formation of the membrane by using a composition in which the cationic polymer component and the anionic polymer component are both dispersed in a solution of the matrix component in an organic solvent.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: December 16, 2003
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Takashi Fukutomi, Yoshifumi Sugito, Minoru Takizawa, Naomi Oguma, Seiji Doi, Michiei Nakamura
  • Publication number: 20030130362
    Abstract: A colloidally and sedimentation stable coating composition containing ion exchange resins is disclosed. A method of using a colloidally and sedimentation stable coating composition containing ion exchange resins is also disclosed.
    Type: Application
    Filed: November 18, 2002
    Publication date: July 10, 2003
    Inventor: Paul Ralph Van Rheenen
  • Patent number: 6534554
    Abstract: 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: Grant
    Filed: May 30, 2000
    Date of Patent: March 18, 2003
    Assignee: Basf Aktiengesellschaft
    Inventors: Michael A. Mitchell, Thomas W. Beihoffer, Ralph Spindler
  • Patent number: 6521340
    Abstract: A sulfur-containing water insoluble hydrogel polymer for selectively removing trace amounts of dissolved metal species is produced from a reaction product of nitrilotriacetic acid (NTA) and polyethylenimine (PEI) which is then treated in a water-swollen state with carbon disulfide. The polymer has a physical configuration that facilitates formation of a porous stationary bed through which water can pass for treatment.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: February 18, 2003
    Inventor: Norman B. Rainer
  • Publication number: 20010047042
    Abstract: Systems and techniques for forming microcellular polymeric material, via injection molding, blow molding, continuous extrusion, or the like, at very low blowing agent levels, are described. The invention involves, in one aspect, the discovery of a region of very low blowing agent level where, surprisingly, microcellular material can be formed. Articles with particularly good surface properties are provided.
    Type: Application
    Filed: December 7, 2000
    Publication date: November 29, 2001
    Inventors: Jere R. Anderson, Kelvin T. Okamoto, Kent G. Blizard
  • Patent number: 6306488
    Abstract: A composite porous structure includes a macroporous open-pore sponge of regenerated cellulose having disposed within the pores a microporous polyvinyl chloride (PVC) substrate. The total empty space of the structure, produced by the pores, is between 60% and 92% of the outer envelope geometrical volume of the structure. The wet compressive strength of the structure is at least ten times greater than the wet compressive strength of the cellulose sponge without the PVC.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: October 23, 2001
    Inventor: Norman B. Rainer