Polymer Derived From Acrylonitrile Or Methacrylonitrile Monomer Patents (Class 525/329.1)
  • Patent number: 10046304
    Abstract: The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: August 14, 2018
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Reiko Nakatsuru, Nobuya Tanaka, Yoshiro Mitsukami
  • Patent number: 9932433
    Abstract: Provided are a method for preparing a nitrile-based rubber having an amount of ethylenically unsaturated nitrile of 34 wt % or less including preparing a polymer by performing a polymerization reaction by adding an ethylenically unsaturated nitrile-based monomer in two or more portions to a conjugated diene-based monomer, and coagulating the polymer by adding a sulfur-based coagulant to the polymer, and a nitrile-based rubber thus prepared having improved mechanical properties as well as excellent processability and low temperature characteristics.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: April 3, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Jae Min Lee, Se Eun Lee, Byoung Yun Kim, In Sung Jo, Woo Seok Choi
  • Patent number: 9598506
    Abstract: This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 21, 2017
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: Qingchun Liu, Zhenli Wei
  • Patent number: 9254345
    Abstract: In the prior art, there has not been provided a fiber that can quickly and persistently deodorize and absorb the smell and the damp feeling due to body fluid generated from the body. The present invention provides a fiber having such property, and specifically provides a moisture-absorbing and deodorizing fiber, characterized in that, a basic polymer is ionically-bonded in an amount of 0.2 to 4 mmol/g as an amount of amino group onto the surface of a moisture-absorbing fiber having a crosslinked structure and also having 3 to 8 mmol/g of carboxyl group.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: February 9, 2016
    Assignee: JAPAN EXLAN COMPANY LIMITED
    Inventor: Naoki Kawanaka
  • Patent number: 9079979
    Abstract: The present invention relates to a process for the production of hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art, wherein the process is carried out in the presence of hydrogen and optionally at least one co-olefin. The present invention further relates to the use of specific metal compounds in a process for the production of a hydrogenated nitrile rubber by simultaneous hydrogenation and metathesis of a nitrile rubber.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: July 14, 2015
    Assignee: LANXESS DEUTSCHLAND GMBH
    Inventors: Christopher Ong, Julia Maria Mueller
  • Patent number: 9068037
    Abstract: Disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is dispersed in a synthetic resin and which has high mechanical strength; and a resin composite material obtained by the method. More specifically, disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is uniformly dispersed in a synthetic resin selected from the group consisting of a crystalline resin and an amorphous resin, the method comprising, when the synthetic resin is a crystalline resin, shear-kneading the crystalline resin and the carbon material with a shear-kneading device at a temperature lower than a melting point of the crystalline resin and, when the synthetic resin is an amorphous resin, shear-kneading the amorphous resin and the carbon material with a shear-kneading device at a temperature close to a Tg of the crystalline resin; and a resin composite material obtained by the production method.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: June 30, 2015
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiro Sawa, Kensuke Tsumura, Nobuhiko Inui, Katsunori Takahashi, Koji Taniguchi
  • Publication number: 20150137666
    Abstract: A reactive ionic liquid to be used as an ionic component that is contained in an ion-containing layer in a transducer arranged in contact with a high-resistance layer as a dielectric layer of the transducer, and is restrained from migrating from the ion-containing layer to the high-resistance layer on application of a voltage is provided. The reactive ionic liquid comprises an ion pair that consists of an anion and a cation. (a) The cation (a1) is an imidazolium or quaternary ammonium cation, and (a2) comprises a reactive group that consists of an alkoxysilyl or phosphonate group. (b) The anion (b1) is a sulfonate, sulfonylimide, or nitrobenzoate anion.
    Type: Application
    Filed: December 17, 2014
    Publication date: May 21, 2015
    Applicants: SUMITOMO RIKO COMPANY LIMITED, KYUSHU UNIVERSITY
    Inventors: Shigeaki TAKAMATSU, Yota KOKUBO, Kazunobu HASHIMOTO, Hitoshi YOSHIKAWA, Atsushi TAKAHARA, Ryousuke MATSUNO, Hideyuki OTSUKA
  • Publication number: 20150129810
    Abstract: A method is described for manufacturing a polyacrylonitrile-sulfur composite material, including the following method steps: a) providing a matrix material; b) optionally adding sulfur to the matrix material; c) adding polyacrylonitrile to the matrix material to produce a mixture made of sulfur and polyacrylonitrile; and d) reacting sulfur and polyacrylonitrile. A composite material manufactured in this way may be used in particular as an active material of a cathode of a lithium-ion battery and offers a particularly high rate capacity. In addition, methods are provided for manufacturing an active material for an electrode.
    Type: Application
    Filed: April 26, 2013
    Publication date: May 14, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Martin Tenzer, Jean Fanous
  • Patent number: 9017805
    Abstract: The present disclosure relates to a polyimide-graphene composite material and a method for preparing same. More particularly, it relates to a polyimide-graphene composite material prepared by adding modified graphene and a basic catalyst during polymerization of a polyimide precursor so as to improve mechanical strength and electrical conductivity and enable imidization at low temperature and a method for preparing same.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: April 28, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Nam Ho You, Ok-kyung Park, Bon-Cheol Ku, Joong Hee Lee, Munju Goh
  • Patent number: 8957161
    Abstract: New catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: February 17, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Julia Maria Jeschko, Oskar Nuyken
  • Patent number: 8901251
    Abstract: A method for making an electrode active material of a lithium ion battery is disclosed. In the method, elemental sulfur is mixed with a polyacrylonitrile to form a mixture. The mixture is heated in vacuum or a protective gas at a heating temperature of about 250° C. to about 500° C., to form a sulfur containing composite. The sulfur containing composite is reacted with a reducing agent for elemental sulfur in a liquid phase medium to remove part of the elemental sulfur from the sulfur containing composite.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: December 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiang-Ming He, Li Wang, Jian-Jun Li, Jian Gao
  • Publication number: 20140294701
    Abstract: A functionalized mesoporous carbon composition comprising a mesoporous carbon scaffold having mesopores in which polyvinyl polymer grafts are covalently attached, wherein said mesopores have a size of at least 2 nm and up to 50 nm. Also described is a method for producing the functionalized mesoporous composition, wherein a reaction medium comprising a precursor mesoporous carbon, vinyl monomer, initiator, and solvent is subjected to sonication of sufficient power to result in grafting and polymerization of the vinyl monomer into mesopores of the precursor mesoporous carbon. Also described are methods for using the functionalized mesoporous carbon, particularly in extracting metal ions from metal-containing solutions.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Inventors: Sheng Dai, Joanna Gorka, Richard T. Mayes
  • Publication number: 20140271442
    Abstract: This invention relates to poly(acrylonitrile) homo- or co-polymer having a number average molecular weight (Mn) of at least 200,000 g/mol and a dispersity () of less than 1.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: Jackie Yun CAI
  • Publication number: 20140256881
    Abstract: The invention provides methods for stably binding and immobilizing deoxyribonucleic acid onto objects and substrates. The method includes exposing the deoxyribonucleic acid to alkaline conditions, and contacting the deoxyribonucleic acid to the object or substrate. The alkaline conditions are produced by mixing the deoxyribonucleic acid with an alkaline solution having a pH of about 9.0 or higher, and contacting the deoxyribonucleic acid to the substrate. The immobilized DNA can be used as a taggant and can be used in combination with other detectable taggants, such as optical reporters. Methods for authentication of a DNA marked object are also provided.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: APPLIED DNA SCIENCES, INC.
    Inventor: APPLIED DNA SCIENCES, INC.
  • Publication number: 20140242623
    Abstract: We disclose methods and compositions for preparation of stimuli-responsive plastics that are capable of responding to chemical and/or physical signals in their environment. In one embodiment the plastics consist of patterned mixtures of poly(phthalaldehyde) polymers in which each polymer contains a different end-capping group (also called a “trigger”), responsive to a different signal. Other embodiments use different polymers and different triggers. The plastics may be homogeneous in composition, but each polymer within the plastic is capable of responding to a different signal and depolymerizing once this signal reacts with the trigger. This process of depolymerization enables the plastic to alter its physical features non-linearly to external signals: i.e., the degree of change in physical form is much larger than the intensity of the initial signal.
    Type: Application
    Filed: May 10, 2011
    Publication date: August 28, 2014
    Inventors: Scott T. Phillips, Wanji Seo, Jessica Robbins, Michael Olah, Kyle Schmid, Anthony Michael DiLauro
  • Publication number: 20140227520
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attracting mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Application
    Filed: May 25, 2012
    Publication date: August 14, 2014
    Applicant: CiDRA Corporate Services Inc.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Publication number: 20140162064
    Abstract: Disclosed herein are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN?170 mL/100 g; and STSA ranging from 160 to 220 m2/g. The carbon black can also have the following properties: OAN?170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.
    Type: Application
    Filed: July 12, 2013
    Publication date: June 12, 2014
    Inventors: Andrew P. Dikan, Stephane F. Rouanet, Heather E. Clarke, Bruce E. MacKay, Danny Pierre
  • Patent number: 8742006
    Abstract: A cross-linkable nitrile rubber composition comprising a nitrile rubber (A1) including an ?,?-ethylenically unsaturated nitrile monomer unit and having iodine value of 120 or less, silica (B1) having CaO value determined by X-ray fluorescence composition analysis of 0.5 wt % or more, and a crosslinking agent (C1). According to the present invention, a cross-linkable nitrile rubber composition, capable of giving a highly-saturated cross-linked nitrile rubber having excellent mechanical properties such as elongation and small compression set, and excellent in workability, and a cross-linked rubber obtained by crosslinking the rubber composition can be provided.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: June 3, 2014
    Assignee: Zeon Corporation
    Inventors: Hiroyasu Nagamori, Shigeru Fujita
  • Patent number: 8735511
    Abstract: A curing resin composition that cures in two stages: photo cure and thermal cure, hardly contaminates a liquid or liquid crystals when in contact with, and provides high adhesive strength, particularly a curing composition that photocures sufficiently even when shadowed by TFT wires, a black matrix, etc. in photocuring; and a sealant, a sealant for ODF (one-drop-fill), and an LCD containing the curing resin composition.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: May 27, 2014
    Assignee: Adeka Corporation
    Inventors: Hirokatsu Shinano, Hiroya Fukunaga, Kazuyuki Itano
  • Publication number: 20140134485
    Abstract: A negative-electrode active material for secondary battery includes a sulfur-modified polyacrylonitrile. The sulfur-modified polyacrylonitrile includes a polyacrylonitrile, and sulfur being introduced into the polyacrylonitrile.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicants: National Institute of Advanced Industrial Science and Technology, Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takuhiro MIYUKI, Toshikatsu KOJIMA, Yuta IKEUCHI, Masanori MORISHITA, Tetsuo SAKAI, Kazuhito KAWASUMI, Masataka NAKANISHI, Junichi NIWA
  • Publication number: 20140093728
    Abstract: A carbon nanostructure that is free of a growth substrate can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another. The carbon nanostructure can be released from a growth substrate in the form of a flake material. Optionally, the carbon nanotubes of the carbon nanostructure can be coated, such as with a polymer, or a filler material can be present within the porosity of the carbon nanostructure. Methods for forming a carbon nanostructure that is free of a growth substrate can include providing a carbon nanostructure adhered to a growth substrate, and removing the carbon nanostructure from the growth substrate to form a carbon nanostructure that is free of the growth substrate. Various techniques can be used to affect removal of the carbon nanostructure from the growth substrate. Isolation of the carbon nanostructure can further employ various wet and/or dry separation techniques.
    Type: Application
    Filed: September 24, 2013
    Publication date: April 3, 2014
    Applicant: Applied Nanostructured Solutions, LLC
    Inventors: Tushar K. SHAH, Harry Charles Malecki, Rajneeta Rachel Basantkumar, Han Liu, Corey Adam Fleischer, Joseph J. Sedlak, Jigar M. Patel, William Patrick Burgess, Jess Michael Goldfinger
  • Patent number: 8664340
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: March 4, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Publication number: 20140058046
    Abstract: Disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is dispersed in a synthetic resin and which has high mechanical strength; and a resin composite material obtained by the method. More specifically, disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is uniformly dispersed in a synthetic resin selected from the group consisting of a crystalline resin and an amorphous resin, the method comprising, when the synthetic resin is a crystalline resin, shear-kneading the crystalline resin and the carbon material with a shear-kneading device at a temperature lower than a melting point of the crystalline resin and, when the synthetic resin is an amorphous resin, shear-kneading the amorphous resin and the carbon material with a shear-kneading device at a temperature close to a Tg of the crystalline resin; and a resin composite material obtained by the production method.
    Type: Application
    Filed: October 12, 2012
    Publication date: February 27, 2014
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiro Sawa, Kensuke Tsumura, Nobuhiko Inui, Katsunori Takahashi, Koji Taniguchi
  • Patent number: 8623965
    Abstract: The present disclosure relates to a sulfurized polyacrylonitrile and a lithium-ion battery cathode active material. The sulfurized polyacrylonitrile includes a structural unit. A general molecular formula of the structural unit is C3HNSn, in which n is a positive integer. The lithium-ion battery cathode active material includes sulfurized polyacrylonitrile and a sulfurized polyacrylonitrile with inserted ions.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: January 7, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
  • Publication number: 20140004364
    Abstract: A dielectric film of the present invention includes an elastomer and barium titanate particles with a crystallinity of 80% or more. The elastomer and each of the barium titanate particles each have a functional group, the functional groups can react with each other, and through the reaction of the functional groups, a cross-linked structure with the elastomer and the barium titanate particles is formed. With this structure, the dielectric constant and volume resistivity of the dielectric film of the present invention are high. A transducer of the present invention includes the dielectric film and a plurality of electrodes with the dielectric film interposed therebetween. The transducer of the present invention is excellent in resistance to dielectric breakdown and can output a large force.
    Type: Application
    Filed: September 3, 2013
    Publication date: January 2, 2014
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Wataru TAKAHASHI, Hitoshi YOSHIKAWA, Shigeaki TAKAMATSU, Shinji KUMAGAI
  • Patent number: 8563659
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 22, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Patent number: 8536277
    Abstract: A novel process for reducing the molecular weight of nitrile rubber in the presence of specific catalyst systems containing the metathesis catalyst and also a specific addition of fluorine-containing boron compounds is provided.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: September 17, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Julia Marie Mueller, Oskar Nuyken, Werner Obrecht
  • Patent number: 8530584
    Abstract: New catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 10, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Julia Maria Muller, Oskar Nuyken
  • Patent number: 8530585
    Abstract: The present invention provides a crosslinker used for crosslinking a polymer material having, in the molecule thereof, a multiple bond reactable with a nitrile oxide, the crosslinker including a bifunctional nitrile oxide having an aromatic nitrile oxide derivative structure in which one hydrogen atom of an aromatic ring is substituted with a nitrile oxide group and all hydrogen atoms at an ortho-position of the nitrile oxide group are substituted with a substituent other than a nitrile oxide group, wherein two such aromatic nitrile oxide derivative structures are bonded to either two oxy groups of a di-oxy structure having the two oxy groups or two carbonyl groups of a di-carbonyl structure having the two carbonyl groups.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: September 10, 2013
    Assignees: Toyoda Gosei Co., Ltd., Tokyo Institute of Technology
    Inventors: Akishige Seo, Hideyuki Imai, Naoki Iwase, Toshikazu Takata, Yasuhito Koyama, Morio Yonekawa
  • Patent number: 8507398
    Abstract: Catalysts for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: August 13, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Ludek Meca, Lubica Triscikova, Heinz Berke, Kirsten Langfeld, Martin Schneider, Oskar Nuyken, Werner Obrecht
  • Patent number: 8507611
    Abstract: The present invention provides a production method of a crosslinkable polymer material which includes adding 2 -(glycidyloxy)-1-naphthonitrile oxide or 2-[5 -(ethoxycarbonyl)pentyloxy]-1-naphthonitrile oxide by an addition reaction to a polymer material having a multiple bond to which a nitrile oxide is added by an addition reaction so as to introduce a glycidyl group or an ethoxycarbonyl group into the polymer material.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: August 13, 2013
    Assignees: Toyoda Gosei Co., Ltd., Tokyo Institute of Technology
    Inventors: Akishige Seo, Hideyuki Imai, Naoki Iwase, Yusuke Katono, Toshikazu Takata, Yasuhito Koyama, Kaori Miura
  • Patent number: 8507610
    Abstract: The present invention provides a production method of a modified polymer material produced by modifying a polymer material having in a molecule thereof a multiple bond that reacts with a nitrile oxide, includes reacting the polymer material with an aromatic nitrile oxide derivative having a substituent at an ortho-position of a nitrile oxide group of an aromatic nitrile oxide in which the nitrile oxide group is bonded to an aromatic ring.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: August 13, 2013
    Assignees: Toyoda Gosei Co., Ltd., Tokyo Institute of Technology
    Inventors: Akishige Seo, Hideyuki Imai, Naoki Iwase, Toshikazu Takata, Yasuhito Koyama
  • Patent number: 8450605
    Abstract: The present disclosure relates to a method for making a conjugated polymer. In the method, polyacrylonitrile, a solvent, and a catalyst are provided. The polyacrylonitrile is dissolved in the solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed into the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a conjugated polymer solution with the conjugated polymer dissolved therein.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 28, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
  • Patent number: 8445600
    Abstract: The present invention provides a crosslinking agent which is excellent in processing characteristics and crosslinking performance, and is capable of preventing staining of a molded product upon molding in a metal mold which tends to be induced when using the crosslinking agent together with a triallyl isocyanurate. The crosslinking agent of the present invention comprises an isocyanurate derivative represented by the following general formula (I): wherein R1 and R2 are each independently a hydrogen atom, a methyl group or an ethyl group; R4 to R13 are each independently a hydrogen atom or a methyl group; R3 is a hydrocarbon group having 1 to 3 carbon atoms which may have a substituent group; and n is an integer of 1 or 2.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: May 21, 2013
    Assignee: Nippon Kasei Chemical Company Limited
    Inventor: Mabuko Yamaura
  • Publication number: 20130112618
    Abstract: Filtration membrane comprising polymeric nanofibers and/or microfibers attaching dendrimer component presenting reactive sites selective for chemicals to be filtered, and related nanofibers and microfibers, composite materials, compositions, methods and system.
    Type: Application
    Filed: August 8, 2012
    Publication date: May 9, 2013
    Inventors: Mamadou S. DIALLO, William A. GODDARD, III, Seong-Jik PARK, Manki CHO
  • Patent number: 8404767
    Abstract: A nitrile group-containing highly saturated copolymer rubber having an iodine value of 80 or less and containing a caprate in 0.01 to 0.4 wt %. Preferably, the caprate is an alkaline earth metal caprate or Group XIII metal caprate. According to present invention, it is possible to provide a nitrile group-containing highly saturated copolymer rubber improved in mold fouling resistance while maintaining good normal state physical properties and heat resistance when being made into a cross-linked product.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: March 26, 2013
    Assignee: Zeon Corporation
    Inventors: Daizo Hosotani, Hiroyasu Nagamori, Shinya Ikeda
  • Patent number: 8372919
    Abstract: In a method for making sulfurized polyacrylonitrile, polyacrylonitrile, a first solvent, a catalyst, and sulfur or sodium thiosulfate are provided. The polyacrylonitrile is dissolved in the first solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed in the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a first conjugated polymer solution with a conjugated polymer. The sulfur or sodium thiosulfate is uniformly mixed with the conjugated polymer to form a mixture. The mixture is heated to form sulfurized polyacrylonitrile.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: February 12, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
  • Patent number: 8367778
    Abstract: Process for the elimination of residual mercaptans from nitrile rubbers, comprising: a. adding a colloidal emulsion of sulfur to a nitrile latex emulsion (NBR rubber latex) containing free mercaptan and with a pH of between 7 and 14, at a temperature ranging from 30 to 120° C.; b. coagulating the nitrile latex c. washing with demineralized water and drying the NBR rubber recovered after coagulation.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 5, 2013
    Assignee: Polimeri Europa S.p.A.
    Inventors: Gian Tommaso Viola, Davide De Santi, Romano Lima
  • Patent number: 8362154
    Abstract: A novel process for the metathetic degradation of nitrile rubbers is provided which uses specific transition metal complex catalysts showing an increased activity.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: January 29, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Christopher Ong, Werner Obrecht, Oskar Nuyken, Julia Maria Muller
  • Publication number: 20120329952
    Abstract: The present invention relates to a process for the metathesis of nitrile rubbers in the presence of a specific catalyst for the metathetic degradation of nitrile rubber. The present invention further relates to specific novel metathesis catalysts and to the use thereof for the metathesis of nitrile rubbers.
    Type: Application
    Filed: August 24, 2010
    Publication date: December 27, 2012
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Christopher Ong, Julia Maria Mueller
  • Publication number: 20120322332
    Abstract: Method for producing an oxidized PAN fiber (OPF) wherein a PAN fiber is subjected to an oxidation process in which reactive oxidizing species are maintained in close enough proximity to the PAN fiber during the oxidation process such that a core of the PAN fiber is converted to a crosslinked thermoset morphology before an oxidized shell of the PAN fiber becomes thick enough to substantially inhibit penetration of the reactive oxidizing species into the core. The resulting OPF possesses a density greater than 1.35 g/cm3 and a substantially homogeneous crosslinked thermoset morphology along a radial dimension of the oxidized PAN fiber. Flame-retarded materials containing the resulting OPF, as well as methods for producing such flame-retarded materials, are also described.
    Type: Application
    Filed: June 17, 2011
    Publication date: December 20, 2012
    Applicant: UT-BATTELLE, LLC
    Inventors: Felix Leonard Paulauskas, Amit Kumar Naskar, Truman Andrew Bonds
  • Patent number: 8308699
    Abstract: Substrates, optionally coated with an undercoating, having grafted thereto one or more non-fouling materials are described herein. The non-fouling, polymeric material can be grafted to a variety of functionalized substrate materials, particularly polymeric substrates and/or polymeric undercoatings immobilized on a substrate. The compositions described herein are highly resistant protein absorption, particularly in complex media and retain a high degree of non-fouling activity over long periods of time. The compositions described herein may also demonstrate antimicrobial and/or anti-thrombogenic activity. The non-fouling material can be grafted to a functionalized substrate, or optionally from an undercoating on the substrate, preferably without significantly affecting the mechanical and/or physical properties of the substrate material.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: November 13, 2012
    Assignee: Semprus Biosciences Corp.
    Inventors: Zheng Zhang, Chad Huval, William Shannan O'Shaughnessey, Michael Hencke, Trevor Squier, Jun Li, Michael Bouchard, Christopher R. Loose
  • Patent number: 8273829
    Abstract: The present disclosure relates to a method for making a conjugated polymer. In the method, polyacrylonitrile, a solvent, and a catalyst are provided. The polyacrylonitrile is dissolved in the solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed into the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a conjugated polymer solution with conjugated polymer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 25, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
  • Publication number: 20120076711
    Abstract: A structure is disclosed containing a sorbent with amine groups that is capable of a reversible adsorption and desorption cycle for capturing CO2 from a gas mixture wherein said structure is composed of fiber filaments wherein the fiber material is carbon and/or polyacrylonitrile.
    Type: Application
    Filed: February 8, 2010
    Publication date: March 29, 2012
    Applicant: ETH ZURICH
    Inventors: Christoph Gebald, Jan André Wurzbacher, Aldo Steinfeld
  • Patent number: 8143354
    Abstract: The present invention relates to the in situ acid end group functionalization of polymer chains which have been prepared by means of atom transfer radical polymerization, and to the simultaneous removal of transition metals from polymer solutions.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: March 27, 2012
    Assignee: Evonik Röhm GmbH
    Inventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
  • Publication number: 20120059128
    Abstract: The present disclosure relates to a sulfurized polyacrylonitrile and a lithium-ion battery cathode active material. The sulfurized polyacrylonitrile includes a structural unit. A general molecular formula of the structural unit is ?C3HNS?n, in which n is a positive integer. The lithium-ion battery cathode active material includes sulfurized polyacrylonitrile and a sulfurized polyacrylonitrile with inserted ions.
    Type: Application
    Filed: March 18, 2011
    Publication date: March 8, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: XIANG-MING HE, LI WANG, WEI-HUA PU, WEN-TING SUN, JIAN-JUN LI
  • Publication number: 20120059085
    Abstract: The present disclosure relates to a method for making a conjugated polymer. In the method, polyacrylonitrile, a solvent, and a catalyst are provided. The polyacrylonitrile is dissolved in the solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed into the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a conjugated polymer solution with conjugated polymer.
    Type: Application
    Filed: March 18, 2011
    Publication date: March 8, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: XIANG-MING HE, LI WANG, WEI-HUA PU, WEN-TING SUN, JIAN-JUN LI
  • Publication number: 20120046418
    Abstract: The present invention provides a production method of a crosslinkable polymer material which includes adding 2-(glycidyloxy)-1-naphthonitrile oxide or 2-[5-(ethoxycarbonyl)pentyloxy]-1-naphthonitrile oxide by an addition reaction to a polymer material having a multiple bond to which a nitrile oxide is added by an addition reaction so as to introduce a glycidyl group or an ethoxycarbonyl group into the polymer material.
    Type: Application
    Filed: February 21, 2011
    Publication date: February 23, 2012
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYODA GOSEI CO., LTD
    Inventors: Akishige SEO, Hideyuki Imai, Naoki Iwase, Yusuke Katono, Toshikazu Takata, Yasuhito Koyama, Kaori Miura
  • Patent number: 8097343
    Abstract: The present invention describes compositions and methods for trapping/capturing and/or destroying dangerous substances such as chemical and biological warfare agents. The present invention relates to dendritic polymers, specifically, to quaternary ammonium functionalized dendritic polymers and N-Halamine functionalized dendritic polymers. Such dendrimers are useful for the capture and neutralization of biological and chemical warfare agents.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: January 17, 2012
    Assignees: Triton Systems, Inc., DSM IP Assets B.V.
    Inventors: Khaled Mahmud, Lawino Kagumba, Franciscus Johannes Marie Derks
  • Patent number: 8084542
    Abstract: An acrylic rubber comprised of a copolymer comprising 0.1 to 20% by weight of (A) units of a butenedioic acid monoester monomer having an alicyclic structure and 50 to 99.9% by weight of (B) units of at least one kind of monomer selected from acrylic acid ester monomers and methacrylic acid ester monomers. A crosslinkable acrylic rubber composition comprising the acrylic rubber and a crosslinking agent, especially a polyamine crosslinking agent, has good process-stability and good shapability and gives a shaped article having high heat resistance and exhibiting reduced permanent set.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: December 27, 2011
    Assignee: Zeon Corporation
    Inventors: Hirofumi Masuda, Yoshiaki Aimura, Kiyonori Umetsu