Ring Containing Organic Compound Patents (Class 96/13)
  • Patent number: 9327248
    Abstract: A copolyimide polymer membrane is provided for separation of hydrocarbons including separation of olefins from paraffins and isoparaffins from other paraffins. The copolyimide polymer membranes include a poly(3,3?-diaminobenzophenone-3,3?,5,5?-tetramethyl-4,4?-methylene dianiline-pyromellitic dianhydride) (abbreviated as poly(DAB-TMMDA-PMDA)). The copolyimide membranes prepared from poly(DAB-TMMDA-PMDA) with varying molar ratios of DAB to TMMDA (abbreviated as PI-DAB-T) showed excellent separation properties for propylene/propane separation.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: May 3, 2016
    Assignee: UOP LLC
    Inventors: Carl W. Liskey, Chunqing Liu, Howie Q. Tran, Nicole K. Karns
  • Patent number: 9227889
    Abstract: An exemplary embodiment can be a process for sweetening natural gas to liquefied natural gas specifications. The process can include providing a membrane contactor having a lumen side and a shell side. A feed natural gas is introduced to the lumen side of the membrane contactor. An absorption solvent is introduced to the shell side of the membrane contactor. CO2 and H2S are removed with the absorption solvent from the feed natural gas resulting in a sweetened natural gas containing less than 50 ppmv CO2 and less than 4 ppmv H2S. Corresponding or associated systems for such sweetening of natural gas are also provided.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: January 5, 2016
    Assignee: Gas Technology Institute
    Inventors: Shaojun Zhou, Howard S. Meyer
  • Patent number: 9126153
    Abstract: Brominated styrene-butadiene copolymers are useful gas transport films. The gas transport films are made by brominating a starting styrene-butadiene copolymer, and then forming the brominated styrene-butadiene copolymer into a film. The film may contain a blend of the brominated styrene-butadiene copolymer with one or more other polymers. The films have excellent selectivities between certain pairs of gasses, and exhibit high gas transport rates for various gasses such as carbon dioxide and water vapor.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 8, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Scott T. Matteucci, Mark W. Beach, Michal E. Matteucci, Shari L. Kram, William G. Stobby, Ted A. Morgan, Inken Beulich
  • Publication number: 20150143995
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 28, 2015
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Patent number: 8999043
    Abstract: As a permeable membrane of an air conditioning system that performs as supply to a space to be air conditioned through the permeable membrane and/or gas discharge from the space to be air conditioned through the permeable membrane, an asymmetric membrane is used. The asymmetric membrane is made of a cyclic olefin addition polymer obtained by addition polymerization of a cyclic olefin functionality siloxane, or by addition polymerization of the cyclic olefin functionality siloxane and a cyclic olefin compound, and in which a rate of a structural unit derived from the cyclic olefin functionality siloxane is 5 to 100 mol % of the addition polymer, and a number average molecular weight (Mn) is 10,000 to 2,000,000 in terms of polystyrene conversion measured by a GPC using tetrahydrofuran as a solvent.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 7, 2015
    Assignees: DENSO CORPORATION, Shin-Etsu Chemical Co., Ltd., Shin-Etsu Polymer Co., Ltd
    Inventors: Yoshinobu Suzuki, Katsunori Iwase, Takehiro Kurata, Manabu Maeda, Yoshinori Yoneda, Hiroaki Tetsuka, Jyunya Ishida
  • Publication number: 20150090126
    Abstract: The invention relates to a vapor retarder membrane, intended to be used for improving the airtightness of a building or of a room, comprising at least one active layer having a water vapor permeability which increases with the surrounding relative humidity, said active layer comprising at least 90% by weight of a blend of ethylene/vinyl alcohol (EVOH) copolymer and of a copolyamide 6-6.6 (PA666), the latter having a melting point below 210° C.
    Type: Application
    Filed: February 27, 2013
    Publication date: April 2, 2015
    Applicant: SAINT-GOBAIN ISOVER
    Inventors: Devang Khariwala, Valerio Massara
  • Publication number: 20150082984
    Abstract: Disclosed is an air-permeable filter with an adhesive layer. This air-permeable filter is imparted with oil repellency and includes: a porous membrane having a surface coated with an oil-repellent agent; and an adhesive layer disposed on the surface. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by (1) —R1C5F10CH2C4F9 or (2) —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. This air-permeable filter is imparted with oil repellency without significantly reducing its adhesive strength to the adhesive layer.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 26, 2015
    Inventors: Nobuaki Maruoka, Yoshiki Ikeyama, Ryota Masuda, Asuka Onohara
  • Publication number: 20150011815
    Abstract: Disclosed herein is a composite hollow fiber polymer membrane including a porous core layer and a selective sheath layer. The porous core layer includes a polyamide-imide polymer, or a polyetherimide polymer, and the selective sheath layer includes a polyimide polymer, which is prepared from monomers A, B, and C. The monomer A is a dianhydride of the formula wherein X1 and X2 are independently halogenated alkyl group, phenyl or halogen and R1, R2, R3, R4, R5, and R6 are independently H, alkyl, or halogen. The monomer B is a diamino cyclic compound without a carboxylic acid functionality and the monomer C is a diamino cyclic compound with a carboxylic acid functionality. The polyimide polymer further includes covalent ester crosslinks. Also disclosed herein is a method of making the composite polymer membrane and a process for purifying natural gas utilizing the composite polymer membrane.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Applicant: GEORGIA TECH RESEARCH CORPORATION
    Inventors: Canghai MA, William John KOROS
  • Patent number: 8926732
    Abstract: The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: January 6, 2015
    Assignee: The Regents of the University of Colorado, a Body Corporate
    Inventors: Jason E. Bara, Trevor K. Carlisle, Evan S. Hatakeyama, Douglas L. Gin, Richard D. Noble, Robert L. Kerr, Andrew L. LaFrate
  • Patent number: 8926733
    Abstract: A method for preparing a polymeric material includes: providing a polymeric matrix having at least one polymer and at least one porogen; and degrading the at least one porogen at a temperature T?1.1 Tg, where Tg is a glass transition temperature of the polymeric matrix. The degrading step includes exposing the polymeric matrix to thermal degradation, chemical degradation, electrical degradation and/or radiation degradation, wherein the polymeric material has a permeability at least 1.2 times a permeability of the polymeric matrix for a gas, and a selectivity of the polymeric material is at least 0.35 times a selectivity of the polymeric matrix for a gas pair. The method preferably provides gas separation membranes that exceed Robeson's upper bound relationship for at least one gas separation pair. Novel polymeric materials, gas separation membranes and fluid component separation methods are also described.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: January 6, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shiying Zheng, Lloyd M. Robeson, M. Keith Murphy, Jeffrey R. Quay
  • Publication number: 20140373716
    Abstract: Provided are a gas barrier resin composition, and a gas barrier composite film excellent in gas barrier properties with respect to oxygen, carbon dioxide gas, water vapor or the like, particularly in gas barrier properties even after hot water treatment. The gas barrier resin composition includes an oxazoline group-containing aqueous polymer (A), an aqueous acrylic resin (B) and/or an aqueous polyester resin (C) each at a specific concentration, wherein the ratio of the mole number of the oxazoline group to the mole number of the carboxyl group [the ratio of the mole number of the oxazoline group (x mmol) to the mole number of the carboxyl group (y mmol), which is indicated as (x/y)×100 (mol %)], is within the specific range. The gas barrier composite film uses this composition.
    Type: Application
    Filed: December 13, 2012
    Publication date: December 25, 2014
    Inventors: Masaru Shimizu, Daisuke Matoba
  • Publication number: 20140366733
    Abstract: A composite filter media is provided. The composite filter media includes a porous membrane material and a nonwoven felt material laminated to the porous membrane material. The nonwoven felt material includes an amount of amorphous fibers and an amount of crystalline fibers, and the amorphous fibers and the crystalline fibers are each fabricated from the same material.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Applicant: BHA Altair, LLC
    Inventors: Cynthia Marie Polizzi, Vishal Bansal
  • Publication number: 20140352534
    Abstract: A gas separation composite membrane, containing: a gas-permeable supporting layer; and a gas separating layer containing a crosslinked polyimide resin, over the gas-permeable supporting layer, in which the crosslinked polyimide resin is composed of a polyimide compound having been crosslinked through an ester linking group, in which the polyimide compound contains a repeating unit of formula (I), a repeating unit of formula (II-a) or (II-b), and a repeating unit of formula (III-a) or (III-b), and in which a ratio [?] of a site forming a crosslinked chain mediated by the ester linking group to an imide group (the number of specific crosslinkable sites/the number of imide groups) is more than 0.4 and less than 0.5.
    Type: Application
    Filed: August 4, 2014
    Publication date: December 4, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Satoshi SANO, Ichiro NAGATA
  • Patent number: 8900351
    Abstract: Provided is a filter medium including a porous polytetrafluoroethylene (PTFE) membrane and a gas-permeable supporting member that are integrated to ensure sufficient stiffness, having excellent gas permeability, and providing excellent bonding between respective layers included in the filter medium. The gas-permeable supporting member includes: a substrate having gas-permeability; and a fiber layer that is placed on the substrate so as to be in contact with the porous PTFE membrane. The gas-permeable supporting member has a structure in which fibers of the fiber layer enter into the substrate and are entangled with the substrate so that the fiber layer is bonded to the substrate. The fiber layer contains polyolefin-containing fibers that are bonded to the porous membrane.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: December 2, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Masaaki Mori, Masatoshi Suzuki
  • Publication number: 20140345462
    Abstract: A separation composite membrane including: a separating layer for separating fluid components, the separating layer being constituted of a polymer having cross-linked structure, and a porous layer for supporting the separating layer, the porous layer having a maximum pore diameter of 0.05 to 0.5 ?m, the separating layer being partly impregnated into the porous layer in the range of 0.1 to 30% in terms of the impregnation amount ratio (?a) defined by Formula (A): [impregnation amount ratio (?a) {% }=impregnation depth (s)/(membrane thickness (t1) of separating layer)×100]??(A).
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Shigehide ITOU
  • Publication number: 20140345456
    Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked organic-inorganic hybrid resin over the gas-permeable supporting layer, in which the crosslinked organic-inorganic hybrid resin has a structure in which a polymer incorporating therein an oxanthrene unit, or a polyimide compound has been crosslinked via a specific crosslinking chain.
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Satoshi SANO, Ichiro NAGATA, Keisuke KODAMA
  • Publication number: 20140311347
    Abstract: Various embodiments demonstrate that an in-situ polymerization enables deposition of a homogeneous polyaniline layer with a controlled thickness on top of a porous polypropylene support. Photografting and subsequent modification with diamines affords composite membranes featuring both high permeability and selectivity that are well suited for applications such as separation of carbon dioxide from a natural gas.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 23, 2014
    Applicant: The Regents of the University of California
    Inventors: Frantisek Svec, Natalia Blinova
  • Publication number: 20140290478
    Abstract: The present invention discloses high performance cross-linked polyimide asymmetric flat sheet membranes and a process of using such membranes. The cross-linked polyimide asymmetric flat sheet membranes have shown CO2 permeance higher than 80 GPU and CO2/CH4 selectivity higher than 20 at 50° C. under 6996 kPa of a feed gas with 10% CO2 and 90% CH4 for CO2/CH4 separation.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: UOP LLC
    Inventors: Chunqing Liu, Zara Osman, Howie Q. Tran, Angela N. Troxell
  • Publication number: 20140287156
    Abstract: Membranes of the invention comprise a hybrid silica film on a organic polymer support. The silica comprises organic bridging groups bound to two or more silicon atoms, in particular at least 1 of said organic bridging groups per 10 silicon atoms. The membranes can be produced by dry chemistry processes, in particular plasma-enhanced vapour deposition of bridged silane precursors, or by wet chemistry involving hydrolysis of the bridged silane precursors. The membranes are inexpensive and efficient for separation of small molecules and filtration processes.
    Type: Application
    Filed: November 2, 2012
    Publication date: September 25, 2014
    Inventors: Robert Kreiter, Mariadriana Creatore, Folker Petrus Cuperus, Jaap Ferdinand Vente, Patrick Herve Tchoua Ngamou
  • Publication number: 20140283685
    Abstract: A membrane suitable for separating a gas from a gas mixture comprising a non cross-linked PVAm having a molecular weight of at least Mw 100,000 carried on a support wherein after casting onto the support, said PVAm has been heated to a temperature in the range 50 to 150° C., e.g. 80 to 120° C.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Inventors: Marius SANDRU, Taek-Joong KIM, May-Britt HÄGG
  • Publication number: 20140260986
    Abstract: A gas separation membrane containing a support and a separating layer formed on the support, the separating layer containing a main body and a hydrophilic layer; the main body being disposed on the side of the support; the hydrophilic layer being disposed on the far side of the support and containing a hydrophilic polymer.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Kenichi ISHIZUKA, Shigehide ITOU
  • Publication number: 20140251897
    Abstract: The present invention relates to a composite membrane for gas separation and/or nanofiltration of a feed stream solution comprising a solvent and dissolved solutes and showing preferential rejection of the solutes. The composite membrane comprises a separating layer with intrinsic microporosity. The separating layer is suitably formed by interfacial polymerisation on a support membrane. Suitably, at least one of the monomers used in the interfacial polymerisation reaction should possess concavity, resulting in a network polymer with interconnected nanopores and a membrane with enhanced permeability. The support membrane may be optionally impregnated with a conditioning agent and may be optionally stable in organic solvents, particularly in polar aprotic solvents. The top layer of the composite membrane is optionally capped with functional groups to change the surface chemistry. The composite membrane may be cured in the oven to enhance rejection.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 11, 2014
    Inventors: Andrew Guy Livingston, Maria Fernanda Jimenez Solomon
  • Publication number: 20140165838
    Abstract: As a permeable membrane of an air conditioning system that performs as supply to a space to be air conditioned through the permeable membrane and/or gas discharge from the space to be air conditioned through the permeable membrane, an asymmetric membrane is used. The asymmetric membrane is made of a cyclic olefin addition polymer obtained by addition polymerization of a cyclic olefin functionality siloxane, or by addition polymerization of the cyclic olefin functionality siloxane and a cyclic olefin compound, and in which a rate of a structural unit derived from the cyclic olefin functionality siloxane is 5 to 100 mol % of the addition polymer, and a number average molecular weight (Mn) is 10,000 to 2,000,000 in terms of polystyrene conversion measured by a GPC using tetrahydrofuran as a solvent.
    Type: Application
    Filed: August 1, 2012
    Publication date: June 19, 2014
    Applicants: DENSO CORPORATION, SHIN-ETSU POLYMER CO., LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshinobu Suzuki, Katsunori Iwase, Takehiro Kurata, Manabu Maeda, Yoshinori Yoneda, Hiroaki Tetsuka, Jyunya Ishida
  • Patent number: 8753426
    Abstract: The invention describes a polymeric material comprising repeating units of Formulae I-III and methods of preparation. Novel polymeric materials, gas separation membranes and fluid component separation methods are also described.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: June 17, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shiying Zheng, Jeffrey Raymond Quay
  • Patent number: 8734567
    Abstract: Disclosed herein is a method for preparing a crosslinked hollow fiber membrane. The method involves spinning a one phase solution comprising a monoesterified polyimide polymer, acetone as a volatile solvent, a spinning solvent, a spinning non-solvent, and optionally an organic and/or inorganic additive, wherein the volatile solvent is present in an amount of greater than 25 wt. % to about 50 wt. %, based on the total weight of the solution.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: May 27, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventor: Shabbir Husain
  • Publication number: 20140137740
    Abstract: A carbon dioxide separation member is disclosed, which includes: a hydrophobic porous membrane that has heat resistance to a temperature of 100° C. or higher; and a polymer compound layer that is formed on a surface of the porous membrane, the polymer compound layer including moisture, and at least one carbon dioxide carrier selected from the group consisting of alkali metal carbonates, alkali metal bicarbonates, and alkali metal hydroxides, and having a cross-linked structure that is formed with a specific single crosslinkable group and includes a specific hydrolysis-resistant bond, wherein the carbon dioxide separation member selectively allows a carbon dioxide gas in a mixture of the carbon dioxide gas and a hydrogen gas to permeate therethrough under temperature conditions of from 100° C. to 250° C.
    Type: Application
    Filed: January 24, 2014
    Publication date: May 22, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro ABURAYA, Kazuki YAMAZAKI
  • Publication number: 20140130669
    Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked and linked, and the polyimide compound is a copolymer having at least an imide group-containing monomer component and a monomer component having a specific polar group; and a module, a gas separation apparatus and a gas separation method using the same.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Satoshi SANO, Ichirou NAGATA, Tomonori ISHINO, Kentaro SHIRATSUCHI, Shigehide ITOU, Kenichi ISHIZUKA, Takeshi UMEHARA
  • Publication number: 20140130667
    Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin is formed by a polyimide compound being crosslinked by a radically crosslinkable functional group thereof, and a ratio [?] of a crosslinked site to an imide group of the polyimide compound (the number of crosslinked sites/the number of imide groups) in the crosslinked polyimide resin is 0.0001 or more and 0.45 or less; a method of producing the same; and a gas separating module, a gas separation apparatus and a gas separation method using the same.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Satoshi SANO, Ichirou NAGATA, Tomonori ISHINO, Kentaro SHIRATSUCHI, Shigehide ITOU, Kenichi ISHIZUKA, Takeshi UMEHARA
  • Publication number: 20140130668
    Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked through a specific crosslinking chain, the specific crosslinking chain has at least one kind of linking group selected from the group consisting of —NRaC(?O)—, —NRbC(?O)O—, —CH2OCH2—, —CH2SCH2—, —OC(?O)O—, —C(?O)O?N+(Rc)3—, —SO3?N+(Rd)3— and —PO3?N+(Re)3—, and Ra, Rb, Rc, Rd and Re each independently represent a hydrogen atom or a substituent.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Satoshi SANO, Tomonori ISHINO, Ichirou NAGATA, Kentaro SHIRATSUCHI, Shigehide ITOU, Kenichi ISHIZUKA, Takeshi UMEHARA
  • Publication number: 20140069277
    Abstract: A gas separation membrane including a porous support; and a gas separating active layer which is disposed on the porous support and includes a functionalized graphene.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicants: Industry-University Cooperation Foundation Hanyang University, Samsung Electronics Co., Ltd.
    Inventors: Jae-young CHOI, Ho-bum PARK, Seon-mi YOON, Hyo-won KIM, Byung-kook AHN, Byung-min YOO, Hee-wook YOON
  • Patent number: 8623124
    Abstract: A composition includes a first polymer having monomers each containing an imidazole group, and a second polymer, the first and second polymers being a polymer blend. The first polymer, the second polymer, or both may be cross-linked. The carbonized composition, polymeric and carbon membranes (either in the form of a flat sheet or a hollow fiber) made from the composition are also described. The polymeric and carbon membranes can be used to separate and purify gases or liquids.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: January 7, 2014
    Assignee: National University of Singapore
    Inventors: Seyed Saeid Hosseini, Tai-Shung Chung
  • Patent number: 8617297
    Abstract: A CO2-facilitated transport membrane of excellent carbon dioxide permeability and CO2/H2 selectivity, which can be applied to a CO2 permeable membrane reactor, is stably provided. The CO2-facilitated transport membrane is formed such that a gel layer 1 obtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane 2. More preferably, a gel layer supported by a hydrophilic porous membrane 2 is coated with hydrophilic porous membranes 3 and 4.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: December 31, 2013
    Assignee: Renaissance Energy Research Corporation
    Inventors: Osamu Okada, Masaaki Teramoto, Reza Yegani, Hideto Matsuyama, Keiko Shimada, Kaori Morimoto
  • Publication number: 20130305927
    Abstract: A gas separation membrane including a porous layered support; and a gas separating active layer which is disposed on the porous layered support and includes a functionalized graphene.
    Type: Application
    Filed: February 14, 2013
    Publication date: November 21, 2013
    Applicants: Industry-University Cooperation Foundation Hanyang University, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-young CHOI, Ho-bum PARK, Seon-mi YOON, Hyo-won KIM, Byung-kook AHN, Byung-min YOO, Hee-wook YOON
  • Patent number: 8580012
    Abstract: An asymmetric hollow fiber gas separation membrane obtained by subjecting an asymmetric hollow fiber polyimide membrane to a heat treatment having a maximum temperature of from 350 to 450° C., wherein the asymmetric hollow fiber polyimide membrane is formed with a polyimide essentially having a repeating unit represented by a general formula (1); is excellent in a solvent resistance and a thermal stability, and as well has such a mechanical strength that a tensile elongation at break is not less than 10% as a hollow fiber membrane.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: November 12, 2013
    Assignee: Ube Industries, Ltd.
    Inventors: Harutoshi Hoshino, Tomonori Kanougi, Toshimune Yoshinaga, Yoji Kase, Kenji Fukunaga
  • Patent number: 8568503
    Abstract: It is an object to provide a vent filer that can reduce contaminants diffusing through the vent filter into the inside of a housing, and has high diffusion efficiency and low pressure loss. The vent filter has an adhesive layer 1 having a through-hole 1a at least in one area; a flow path member 2 provided with a flow path 2a in communication with the through-hole 1a; and an air-permeable membrane 3 covering the flow path member 2 and part of the adhesive layer 1, wherein the peripheral portion 3a of the air-permeable membrane 3 is fixed to the adhesive layer 1 and the flow path member 2 is held within a hollow portion formed between the adhesive layer 1 and the air-permeable membrane 3.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: October 29, 2013
    Assignee: W. L. Gore & Associates, Co., Ltd.
    Inventors: Yutaka Sasaki, Yusuke Yahara
  • Patent number: 8501668
    Abstract: The invention provides a porous nanoscale membrane. In one embodiment, the membrane can be used as a filtration device to screen agents that disrupt or prevent molecular interactions. In one embodiment, the membrane allows for screening agents that disrupt or prevent molecular interactions using a small sample volume with efficient high-throughput screening applications.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: August 6, 2013
    Assignee: University of Rochester
    Inventors: James L. McGrath, Harold C. Smith
  • Publication number: 20130192460
    Abstract: Technologies are generally described for perforated graphene monolayers and membranes containing perforated graphene monolayers. An example membrane may include a graphene monolayer having a plurality of discrete pores that may be chemically perforated into the graphene monolayer. The discrete pores may be of substantially uniform pore size. The pore size may be characterized by one or more carbon vacancy defects in the graphene monolayer. The graphene monolayer may have substantially uniform pore sizes throughout. In some examples, the membrane may include a permeable substrate that contacts the graphene monolayer and which may support the graphene monolayer. Such perforated graphene monolayers, and membranes comprising such perforated graphene monolayers may exhibit improved properties compared to conventional polymeric membranes for gas separations, e.g., greater selectivity, greater gas permeation rates, or the like.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 1, 2013
    Applicant: Empire Technology Development, LLC
    Inventors: Seth A. Miller, Gary L. Duerksen
  • Publication number: 20130145748
    Abstract: To provide a method of reducing a nitrogen oxide in an exhaust gas of an internal combustion engine, an apparatus for reducing a nitrogen oxide, and an internal combustion engine system that can effectively reduce a nitrogen oxide in the exhaust gas of the internal combustion engine in a simple manner. A method of reducing a nitrogen oxide in an exhaust gas of an internal combustion engine includes: a step of moisturizing air at a pressure equal to or lower than atmospheric pressure by bringing the air into contact with one surface of a steam permeable membrane (11) while flowing water along the other surface of the steam permeable membrane (11); and a step of introducing the moisturized air into the internal combustion engine.
    Type: Application
    Filed: August 23, 2011
    Publication date: June 13, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Atsushi Shimizu, Hirokazu Ohno, Tomohiro Niihama, Masahiro Tsukamoto
  • Publication number: 20130146538
    Abstract: The present invention is for high permeance and high selectivity blend polymeric membranes comprising poly(ethylene glycol) (PEG) and a highly permeable polymer selected from the group consisting of polymers of intrinsic microporosity (PIMs), tetrazole-functionalized polymers of intrinsic microporosity (TZPIMs), or mixtures thereof. The present invention also involves the use of such membranes for separations of liquids and gases.
    Type: Application
    Filed: October 18, 2012
    Publication date: June 13, 2013
    Applicant: UOP LLC
    Inventor: UOP LLC
  • Patent number: 8449651
    Abstract: Disclosed herein is a method for preparing a crosslinked hollow fiber membrane. The method involves spinning a one phase solution comprising a monoesterified polyimide polymer, acetone as a volatile solvent, a spinning solvent, a spinning non-solvent, and optionally an organic and/or inorganic additive, wherein the volatile solvent is present in an amount of greater than 25 wt. % to about 50 wt. %, based on the total weight of the solution.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 28, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventor: Shabbir Husain
  • Patent number: 8419840
    Abstract: The present invention provides an air-conditioning system that supplies a gas to a space to be air-conditioned and/or discharges a gas from the space to be air-conditioned through a permeable membrane in order to provide an air-conditioning system that can sufficiently block suspended matter in the air such as SPM, and can sufficiently introduce outside air in which the permeable membrane is an asymmetric membrane formed of a polymeric material prepared by polymerizing a monomer composition containing a predetermined monomer.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 16, 2013
    Assignees: Shin-Etsu Polymer Co,. Ltd., Denso Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: Junya Ishida, Katsunori Iwase, Manabu Maeda, Mamoru Hagiwara
  • Publication number: 20130087042
    Abstract: A water-proof air-permeable filter (1) includes: a resin film (2) having formed therein a plurality of through pores (21); a treated layer (3) having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film (2) such that the treated layer (3) has openings (31) at positions corresponding to the through pores (21); and a loop-shaped double-sided tape (4) stuck to an edge region of one of both surfaces in the thickness direction of the resin film (2), with the treated layer (3) interposed therebetween.
    Type: Application
    Filed: March 23, 2011
    Publication date: April 11, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Satoru Furuyama, Satoshi Sakuma, Yozo Nagai, Junichi Moriyama
  • Patent number: 8394181
    Abstract: A permselective material has a polymer having an organosiloxane skeleton and containing a dispersed solid additive. When oxygen and nitrogen are passed through a membrane having the permselective material, the relation between the permeability coefficients [cm3·cm·sec?1·cm?2·cmHg?1] of oxygen and nitrogen at a temperature of 23±2° C. under a pressure difference of 1.05 atm to 1.20 atm through the membrane is expressed by Formula (1): 0.94 ? P ? ( O 2 ) P ? ( N 2 ) < 1 ( 1 ) where P(O2) denotes the permeability coefficient of oxygen, while P(N2) denotes the permeability coefficient of nitrogen.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: March 12, 2013
    Assignees: Shin-Etsu Polymer Co., Ltd., DENSO CORPORATION, Shin-Etsu Chemical Co., Ltd.
    Inventors: Junya Ishida, Katsunori Iwase, Akira Yamamoto, Masahiko Minemura
  • Patent number: 8394176
    Abstract: Disclosed are a gas separation membrane and a gas separation method in which at least one species of organic vapor is separated and recovered from an organic vapor mixture using the gas separation membrane. The gas separation membrane is made of an aromatic polyimide composed of a tetracarboxylic acid component consisting of an aromatic ring-containing tetracarboxylic acid and a diamine component comprising 10 to 90 mol % of a combination of (B1) 3,4?-diaminodiphenyl ether and (B2) 4,4?-diaminodiphenyl ether at a B1 to B2 molar ratio, B1/B2, ranging from 10/1 to 1/10, and 10 to 90 mol % of other aromatic diamine.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: March 12, 2013
    Assignee: Ube Industries, Ltd.
    Inventors: Tomonori Kanougi, Harutoshi Hoshino, Toshimune Yoshinaga, Yoji Kase, Kenji Fukunaga
  • Patent number: 8394182
    Abstract: A composition of and a method of making high performance crosslinked membranes are described. The membranes have a high resistance to plasticization by use of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4selectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 12, 2013
    Assignees: The University of Texas System, Chevron U.S.A. Inc.
    Inventors: William J. Koros, David Wallace, John Wind, Claudia Staudt-Bickel, Stephen J. Miller
  • Patent number: 8382883
    Abstract: In one aspect, the present invention provides a curable composition useful in the preparation of a gas separation membrane. The curable composition comprises a polyvinyl alcohol; an aliphatic polyamine; a polyglycidyl ether; and a salt of a C2 to C4 heterocyclic amino acid. In another aspect the present invention provides a composition comprising a crosslinked polyvinyl alcohol comprising structural units derived from a polyglycidyl ether, a polyamine and the salt of a C2 to C4 heterocyclic amino acid. The compositions are useful in the preparation of gas separation membranes in which the C2 to C4 heterocyclic amino acid in the form of its salt functions as a mobile carrier of carbon dioxide.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: February 26, 2013
    Assignee: General Electric Company
    Inventors: Gary William Yeager, Eric James Pressman, Scott Michael Miller, Cathryn Olsen
  • Patent number: 8377170
    Abstract: A CO2-facilitated transport membrane of excellent carbon dioxide permeability and CO2/H2 selectivity, which can be applied to a CO2 permeable membrane reactor, is stably provided. The CO2-facilitated transport membrane is formed such that a gel layer 1 obtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane 2. More preferably, a gel layer supported by a hydrophilic porous membrane 2 is coated with hydrophilic porous membranes 3 and 4.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: February 19, 2013
    Assignee: Renaissance Energy Research Corporation
    Inventors: Osamu Okada, Masaaki Teramoto, Reza Yegani, Hideto Matsuyama, Keiko Shimada, Kaori Morimoto
  • Patent number: 8366804
    Abstract: The present invention discloses a new type of polyimide membranes including hollow fiber and flat sheet membranes with high permeances for air separations and a method of making these membranes. The new polyimide hollow fiber membranes have O2 permeance higher than 300 GPU and O2/N2 selectivity higher than 3 at 60° C. under 308 kPa for O2/N2 separation. The new polyimide hollow fiber membranes also have CO2 permeance higher than 1000 GPU and single-gas selectivity for CO2/CH4 higher than 20 at 50° C. under 791 kPa for CO2/CH4 separation.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: February 5, 2013
    Assignee: UOP LLC
    Inventors: Chunqing Liu, Raisa Minkov, Syed A. Faheem, Travis C. Bowen, Jeffrey J. Chiou
  • Patent number: 8328906
    Abstract: The present disclosure relates to a high molecular weight, monoesterified polyimide polymer. Such high molecular weight, monoesterified polyimide polymers are useful in forming crosslinked polymer membranes for the separation of fluid mixtures. According to its broadest aspect, the method of making a crosslinked membrane comprises the following steps: (a) preparing a polyimide polymer comprising carboxylic acid functional groups from a reaction solution comprising monomers and at least one solvent; (b) treating the polyimide polymer with a diol at esterification conditions in the presence of dehydrating conditions to form a monoesterified polyimide polymer; and (c) subjecting the monoesterified fiber to transesterification conditions to form a crosslinked fiber membrane, wherein the dehydrating conditions at least partially remove water produced during step (b). The crosslinked membranes can be used to separate at least one component from a feed stream including more than one component.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: December 11, 2012
    Assignees: Chevron U.S.A. Inc., Georgia Tech Research Corporation
    Inventors: Stephen J. Miller, Imona C. Omole, William J. Kronos
  • Publication number: 20120297976
    Abstract: Provided is a gas separation membrane having superior gas permeability, separation selectivity and mechanical properties. A gas separation membrane to separate at least one acid gas from a mix gas, comprising in this order: a first layer that is porous; a second layer that is a separation-active layer containing a compound having a molecular weight of 150,000 or less and capable oft interacting with the acid gas; and a third layer having high gas permeability.
    Type: Application
    Filed: February 10, 2011
    Publication date: November 29, 2012
    Inventor: Satoshi Sano