Organic Compound Containing Layer Patents (Class 96/12)
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Patent number: 8608828Abstract: The use of solutions of organic polymers for production of carbon membranes suitable for gas separation, and a process for producing carbon membranes suitable for gas separation, comprising the steps of a) coating a porous substrate with solutions of organic polymers, b) drying the polyester coating on the porous substrate by removing the solvent, and c) pyrolyzing the polyester coating on the porous substrate to form the carbon membrane suitable for gas separation, it being possible to conduct any of steps a) to c) or the sequence of steps a) to c) more than once.Type: GrantFiled: September 30, 2011Date of Patent: December 17, 2013Assignee: BASF SEInventors: Hartwig Voss, Joerg Therre, Nadine Kaltenborn, Hannes Richter, Ingolf Voigt
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Patent number: 8608837Abstract: The use of solutions of ethylenically unsaturated polyesters for production of carbon membranes suitable for gas separation, and a process for producing carbon membranes suitable for gas separation, comprising the steps of a) coating a porous substrate with a solution of ethylenically unsaturated polyester, b) drying the polyester coating on the porous substrate by removing the solvent, and c) pyrolyzing the polyester coating on the porous substrate to form the carbon membrane suitable for gas separation, it being possible to conduct any of steps a) to c) or the sequence of steps a) to c) more than once.Type: GrantFiled: September 30, 2011Date of Patent: December 17, 2013Assignee: BASF SEInventors: Hartwig Voss, Joerg Therre, Nadine Kaltenborn, Susanne Kaemnitz
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Publication number: 20130327220Abstract: A multilayer complex for the vacuum molding of a composite part containing a fibrous reinforcement and a polymer resin, including a peel-ply fabric combined with a microporous membrane which is at least pervious to gases.Type: ApplicationFiled: August 12, 2013Publication date: December 12, 2013Inventor: Bernard De Mulatier
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Publication number: 20130305927Abstract: 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: ApplicationFiled: February 14, 2013Publication date: November 21, 2013Applicants: 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
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Patent number: 8585807Abstract: A process for forming a palladium or palladium alloy membrane on a ceramic surface by forming a pre-colloid mixture comprising a powder palladium source, carrier fluid, dispersant and a pore former and a binder. Ultrasonically agitating the precolloid mixture and applying to a substrate with an ultrasonic nozzle and heat curing the coating form a palladium-based membrane.Type: GrantFiled: September 30, 2011Date of Patent: November 19, 2013Assignee: UChicago Argonne, LLCInventors: Tae H. Lee, Chan Young Park, Yunxiang Lu, Stephen E. Dorris, Uthamalingham Balachandran
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Solvent-resistant asymmetric hollow fiber gas separation membrane, and method for production thereof
Patent number: 8580012Abstract: 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: GrantFiled: January 19, 2009Date of Patent: November 12, 2013Assignee: Ube Industries, Ltd.Inventors: Harutoshi Hoshino, Tomonori Kanougi, Toshimune Yoshinaga, Yoji Kase, Kenji Fukunaga -
Publication number: 20130291729Abstract: A method of fabricating a gas separation membrane includes providing a coextruded multilayer film that includes a first polymer layer formed of a first polymer material and a second polymer layer formed of a second polymer material, the first polymer material having a first gas permeability. The coextruded multilayer film is axially oriented such that the second polymer layer has a second gas permeability that is greater than the first gas permeability.Type: ApplicationFiled: May 1, 2013Publication date: November 7, 2013Applicant: Case Western Reserve UniversityInventors: Eric Baer, Shannon Armstrong, Benny D. Freeman, Donald R. Paul, Grant Offord
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Publication number: 20130270188Abstract: Two-dimensional material based filters, their method of manufacture, and their use are disclosed. The filters may include at least one active layer disposed on a porous substrate. The at least one active layer may include intrinsic and/or intentional formed pores. In some embodiments, the flow resistance of the porous substrate may be selected to limit flow through defects and intrinsic pores in the at least one active layer.Type: ApplicationFiled: March 15, 2013Publication date: October 17, 2013Inventors: Massachusetts Institute of Technology, King Fahd University of Petroleum & Minerals
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Patent number: 8557030Abstract: An air dryer cartridge assembly, used in a compressed air system, includes a rigid porous layer, a fibrous material layer, a diffusing layer and a desiccant for filtering and drying compressed air passing in a first direction during a charging cycle. The compressed air passes through diffusing layer, the fibrous material layer and the rigid porous layer in a second direction during a purging cycle. The desiccant, which is downstream of the rigid porous layer, the fibrous material layer and the diffusing layer during the charging cycle, reduces moisture in the compressed air during the charging cycle. The use of diffusing layer downstream of the fibrous material layer during a charging cycle disperses the compressed air so that moisture removal is improved in the desiccant.Type: GrantFiled: April 6, 2011Date of Patent: October 15, 2013Assignee: Bendix Commercial Vehicle Systems LLCInventors: William P. Fornof, Leonard A. Quinn
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Patent number: 8540801Abstract: The present disclosure describes a method for forming microporous membranes. More specifically, vapor induced phase separation techniques are used for forming multizone microporous membranes having improved material throughput.Type: GrantFiled: October 22, 2009Date of Patent: September 24, 2013Assignee: 3M Innovative Properties CompanyInventors: Ilyess H. Romdhane, Mikhail S. Mezhirov
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Publication number: 20130228519Abstract: The present invention is directed to ultrafiltration membranes comprising a microporous material, said microporous material comprising: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said microporous material substrate; and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The present invention is also directed to methods of separating suspended or dissolved materials from a fluid stream such as a liquid or gaseous stream, comprising passing the fluid stream through the ultrafiltration membrane described above.Type: ApplicationFiled: August 30, 2012Publication date: September 5, 2013Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Qunhui Guo, Carol L, Knox, Raphael O. Kollah, Justin J. Martin, Timothy A. Okel, Daniel E. Rardon, Christine Gardner, Shantilal M. Mohnot
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Publication number: 20130228529Abstract: The present invention is directed to microfiltration membranes comprising a microporous material, said microporous material comprising: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said microporous material substrate, wherein the weight ratio of filler to polyolefin is greater than 4:1; and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The present invention is also directed to methods of separating suspended or dissolved materials from a fluid stream such as a liquid or gaseous stream, comprising passing the fluid stream through the microfiltration membrane described above.Type: ApplicationFiled: August 30, 2012Publication date: September 5, 2013Applicant: PPG Industries Ohio, Inc.Inventors: Qunhui Guo, Carol L. Knox, Raphael O. Kollah, Justin J. Martin, Timothy A. Okel, Daniel E. Rardon, Christine Gardner, Shantilal M. Mohnot
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Patent number: 8523981Abstract: The invention relates to a hydrophobic, integrally asymmetrical hollow-fiber membrane made of a vinylidene fluoride homopolymer or copolymer, wherein the wall of the membrane has a microporous supporting layer having a sponge-like, open-pored, essentially isotropic pore structure without finger pores, the supporting layer extending across at least 90% of the wall thickness and having pores with an average diameter of less than 0.5 ?m. The hollow-fiber membrane is characterized in that it has a separating layer adjacent to the supporting layer on its outer surface and that it has an outer surface with a homogeneous, uniform structure without pores, a porosity in the range from 40 to 80 vol. %, a wall thickness from 25 to 100 ?m, a diameter of the lumen of the hollow-fiber membrane from 100 to 500 ?m, a permeability for nitrogen of at least 25 ml/(cm2·min·bar), and an elongation at break of at least 250%. The invention further relates to a method for producing hollow-fiber membranes of this type.Type: GrantFiled: December 7, 2009Date of Patent: September 3, 2013Assignee: Membrana GmbHInventors: Quan Huang, Karl Bauer, Phung Duong, Oliver Schuster
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Patent number: 8518150Abstract: Methods for the purification of steam, systems for purifying steam, methods for measuring and/or controlling steam flow rates, and uses for purified steam are provide. Also provided are substantially gas-impermeable membranes, such as perfluorinated ionomers (e.g., perfluoroethylene-sulfonic-acid/tetrafluoroethylene membranes), having a high ratio of water vapor permeation relative to gas permeation through the membrane. Also provided are methods of operation of such membranes at relatively high operating temperatures for the purification of steam and for operation of such membranes at relatively low temperature and sub-atmospheric pressures for the purification of steam. In a preferred embodiment, the system 400 for purifying steam comprises heater 404 for creating a source of a steam feed, and a purification device 416 for housing a substantially gas-impermeable membrane 424. In the operation of system 400, water, such as deionized water, is added to vessel 402 to provide a source of the steam feed.Type: GrantFiled: August 28, 2012Date of Patent: August 27, 2013Assignee: RasircInventors: Jeffrey J. Spiegelman, Richard D. Blethen
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Patent number: 8512441Abstract: A process for recovering a gaseous component comprising at least one fluorine-containing compound from a mixture of gaseous compounds. The process includes, in a separation zone (12), bringing a mixture of gaseous constituents, including at least one fluorine-containing constituent, into contact with a gas permeable separating medium (16) comprising a polymeric compound, so that a first gaseous component comprising at least one fluorine-containing constituent is separated from a second gaseous component comprising the balance of the gaseous constituents. The first gaseous component is withdrawn from the separation zone as a permeate (34) or a retentate, while the second gaseous component is withdrawn from the separation zone as the retentate (26), when the first gaseous component is withdrawn as the permeate, and as the permeate, when the first gaseous component is withdrawn as the retentate.Type: GrantFiled: July 6, 2009Date of Patent: August 20, 2013Assignees: The South African Nuclear Energy Corporation Limited, North-West UniversityInventors: Johannes Theodorus Nel, Izak Jacobus Van Der Walt, Alfred Teo Grunenberg, Odolphus Simon Leo Bruinsma, Marco Le Roux, Henning Manfred Krieg, Sanette Marx
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Patent number: 8501668Abstract: 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: GrantFiled: September 9, 2010Date of Patent: August 6, 2013Assignee: University of RochesterInventors: James L. McGrath, Harold C. Smith
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Publication number: 20130192460Abstract: 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: ApplicationFiled: January 26, 2012Publication date: August 1, 2013Applicant: Empire Technology Development, LLCInventors: Seth A. Miller, Gary L. Duerksen
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Publication number: 20130174736Abstract: A waterproof and salt repellant media for use in a gas turbine intake filter is provided. The media includes a first composite material layer having a polypropylene melt-blown layer and a polypropylene spun-bond layer, and a second composite material layer having a polyester spun-bond material coated with PTFE.Type: ApplicationFiled: December 27, 2012Publication date: July 11, 2013Applicant: TDC Filter Manufacturing, Inc.Inventor: TDC Filter Manufacturing, Inc.
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Publication number: 20130160650Abstract: 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: ApplicationFiled: January 16, 2013Publication date: June 27, 2013Applicant: RENAISSANCE ENERGY RESEARCH CORPORATIONInventor: RENAISSANCE ENERGY RESEARCH CORPORATION
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Patent number: 8465565Abstract: The invention relates to a porous membrane having a particle filtration value of at least 10 under U.S. Military Standard MIL-STD-282 (1956), where the porous membrane is a polyethylene membrane. The membranes according to the invention are particularly useful for filters such as ASHRAE filters, HEPA filters and ULPA filters for example in heating, ventilating, respirators and air conditioning applications.Type: GrantFiled: February 20, 2009Date of Patent: June 18, 2013Assignee: Lydall Solutech B.V.Inventors: Gijsbertus Hendrikus Maria Calis, Hendrik Derk Hoving
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Publication number: 20130145748Abstract: 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: ApplicationFiled: August 23, 2011Publication date: June 13, 2013Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Atsushi Shimizu, Hirokazu Ohno, Tomohiro Niihama, Masahiro Tsukamoto
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Publication number: 20130138384Abstract: Disclosed are a composite separation membrane structure for a gas sensor for real-time monitoring of degradation of insulating oil of a power transformer, a gas sensor apparatus including the same, and a method and an apparatus for measuring gas concentration using the same. It is possible to locally diagnose whether there is a fault in the power transformer and what kind of fault occurs where in the power transformer by quantitatively measuring the concentration of several gases dissolved in the insulating oil in real time. As a result, breakdown of the power transformer may be prevented and remaining service life of the insulating oil in the power transformer may be predicted.Type: ApplicationFiled: August 3, 2012Publication date: May 30, 2013Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hosung KONG, Hung Gu HAN, Jung Wook LEE
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Patent number: 8419961Abstract: An oil gas separation membrane combines a gas permeable yet oil and temperature resistant bulk polymer membrane such as poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-hexafluoropropylene); a porous metal support such as sintered metal frit disk made with stainless steel, bronze or nickel; and an highly gas permeable adhesive that bonds firmly the bulk polymer membrane and the metal frit surface together. The adhesive is either a homogenous polymer that has desirable gas permeability, or a coalescent porous polymer particulates network. A gas sensor employing the oil gas separation membrane for detecting and monitoring fault gases of oil filled electrical equipment requires no mechanical wearing or moving part such as pump and valve and the gas sensor is operated normally under various temperature and pressure conditions.Type: GrantFiled: May 28, 2009Date of Patent: April 16, 2013Assignee: Asensou Technologies Co., Ltd.Inventor: Ren Yan Qin
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Patent number: 8419839Abstract: First, a first porous body is manufactured by stretching, in a uniaxial direction, a sheet made of polytetrafluoroethylene having a standard specific gravity of 2.155 or more, and a second porous body is manufactured by stretching, in biaxial directions, a sheet made of polytetrafluoroethylene. Next, the first porous body is integrated with the second porous body by stretching a laminate of the first porous body and the second porous body in the same direction as the uniaxial direction while heating the laminate at a temperature equal to or higher than a melting point of polytetrafluoroethylene. Thus, a porous polytetrafluoroethylene membrane is produced.Type: GrantFiled: November 11, 2008Date of Patent: April 16, 2013Assignee: Nitto Denko CorporationInventor: Shunichi Shimatani
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Patent number: 8419840Abstract: 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: GrantFiled: June 28, 2010Date of Patent: April 16, 2013Assignees: Shin-Etsu Polymer Co,. Ltd., Denso Corporation, Shin-Etsu Chemical Co., Ltd.Inventors: Junya Ishida, Katsunori Iwase, Manabu Maeda, Mamoru Hagiwara
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Patent number: 8419838Abstract: A process for preparing a composite membrane comprising a porous support layer and a discriminating layer, comprising the steps of: (a) providing a porous support layer; (b) incorporating an inert liquid into the pores of the support layer; (c) applying a curable composition to the support layer; and (d) curing the composition, thereby forming the discriminating layer on the porous support. The process is particularly useful for preparing gas separation composite membranes.Type: GrantFiled: April 6, 2009Date of Patent: April 16, 2013Assignee: Fujifilm Manufacturing Europe B.V.Inventor: Yujiro Itami
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Publication number: 20130087042Abstract: 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: ApplicationFiled: March 23, 2011Publication date: April 11, 2013Applicant: NITTO DENKO CORPORATIONInventors: Satoru Furuyama, Satoshi Sakuma, Yozo Nagai, Junichi Moriyama
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Publication number: 20130081540Abstract: A process for forming a palladium or palladium alloy membrane on a ceramic surface by forming a pre-colloid mixture comprising a powder palladium source, carrier fluid, dispersant and a pore former and a binder. Ultrasonically agitating the precolloid mixture and applying to a substrate with an ultrasonic nozzle and heat curing the coating form a palladium-based membrane.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Applicant: UCHICAGO ARGONNE, LLC.Inventors: Tae H. Lee, Chan Young Park, Yunxiang Lu, Stephen E. Dorris, Uthamalingam Balachandran
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Publication number: 20130083528Abstract: A water-proof and dust-proof membrane assembly which has a satisfactory water-proof property, dust-proof property, sound transmission capability and air permeability, as well as excellent supporting intensity and pressure resistance is provided. A water-proof and dust-proof membrane assembly having a body and a supporting member, in which the body is an asymmetric porous structure in the form of membrane having a first surface and a second surface, the supporting member is composed of a polymeric material, includes a first contact surface and a second contact surface and the porosity (second porosity) of the supporting member is larger than the first porosity, i.e. 10% to 99.9%, and the first surface of the body and the first contact surface of the supporting body are bonded is provided.Type: ApplicationFiled: November 20, 2012Publication date: April 4, 2013Applicant: EF-Materials Industries Inc.Inventor: EF-Materials Industries Inc.
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Patent number: 8394182Abstract: 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: GrantFiled: December 17, 2010Date of Patent: March 12, 2013Assignees: The University of Texas System, Chevron U.S.A. Inc.Inventors: William J. Koros, David Wallace, John Wind, Claudia Staudt-Bickel, Stephen J. Miller
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Patent number: 8394183Abstract: An asymmetric membrane contains a porous layer and a dense layer adjacent thereto. The porous layer and the dense layer are formed of a polymeric material. The porous layer and/or dense layer contains a filler. The amount of the filler is 11 parts by mass or more per 100 parts by mass of the polymeric material contained in the asymmetric membrane.Type: GrantFiled: October 27, 2008Date of Patent: March 12, 2013Assignees: Shin-Etsu Polymer Co., Ltd., Denso Corporation, Shin-Etsu Chemical Co., Ltd.Inventors: Junya Ishida, Mitsuaki Negishi, Yuzo Morioka, Mika Kawakita, Katsunori Iwase, Manabu Maeda, Masahiko Minemura, Mamoru Hagiwara
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Patent number: 8394181Abstract: 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: GrantFiled: December 26, 2007Date of Patent: March 12, 2013Assignees: Shin-Etsu Polymer Co., Ltd., DENSO CORPORATION, Shin-Etsu Chemical Co., Ltd.Inventors: Junya Ishida, Katsunori Iwase, Akira Yamamoto, Masahiko Minemura
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Patent number: 8388744Abstract: The subject matter disclosed herein relates to gas separation membranes and, more specifically, to polyimide gas separation membranes. In an embodiment, a gas separation membrane includes a porous substrate, a substantially continuous polyimide membrane layer, and one or more layers of boehmite nanoparticles disposed between the porous substrate and the polyimide membrane layer to form a bond-coat layer. The bond-coat layer is configured to improve the adhesion of the polyimide membrane layer to the porous substrate, and the polyimide membrane layer has a thickness approximately 100 nm or less.Type: GrantFiled: August 30, 2011Date of Patent: March 5, 2013Assignee: General Electric CompanyInventor: Kimberly Ann Polishchuk
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Publication number: 20130047855Abstract: The subject matter disclosed herein relates to gas separation membranes and, more specifically, to polyimide gas separation membranes. In an embodiment, a gas separation membrane includes a porous substrate, a substantially continuous polyimide membrane layer, and one or more layers of boehmite nanoparticles disposed between the porous substrate and the polyimide membrane layer to form a bond-coat layer. The bond-coat layer is configured to improve the adhesion of the polyimide membrane layer to the porous substrate, and the polyimide membrane layer has a thickness approximately 100 nm or less.Type: ApplicationFiled: August 30, 2011Publication date: February 28, 2013Applicant: General Electric CompanyInventor: Kimberly Ann Polishchuk
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Patent number: 8377170Abstract: 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: GrantFiled: May 2, 2012Date of Patent: February 19, 2013Assignee: Renaissance Energy Research CorporationInventors: Osamu Okada, Masaaki Teramoto, Reza Yegani, Hideto Matsuyama, Keiko Shimada, Kaori Morimoto
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Patent number: 8367567Abstract: The Shelf Life Extending Container for fruits and vegetables extends the shelf life of various fresh fruits and vegetables and vase life of fresh cut flowers by changing the atmosphere in which these living products are stored and respires. The Shelf Life Extending Container does this by utilizing a Gas Permeable Non-Woven Fabric Based Film. The high oxygen and carbon dioxide permeability of the Gas Permeable Non-Woven Fabric Based Film establishes an ideal atmosphere for the multiple perishable items stored within the Shelf life Extending Container, and therefore extends their shelf life. The establishment of lower oxygen and carbon dioxide atmospheres within the Shelf Life Extending Container using the Gas Permeable Non-Woven Fabric Based Film, also leads to a reduction in the respiration rate of the perishable items stored.Type: GrantFiled: August 9, 2010Date of Patent: February 5, 2013Inventors: Shubham Chandra, Benjamin Scott Williams
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Publication number: 20130022510Abstract: A method for fabricating a high-density zeolite membrane structure is described. The method includes the step of combining (i) a mineral zeolite material; (ii) at least one cement precursor; and (iii) an organic binder, with an aqueous component, to form an aqueous composite zeolite composition. The zeolite composition is then applied on a surface of a scaffold formed from a porous, metal oxide material. The zeolite composition is dried, and then heated under conditions to form a metal oxide-zeolite composite layer. This layer is exposed to a phosphate composition, under conditions sufficient to reduce the porosity to a level no greater than about 10%. A high-density zeolite cement composite membrane structure results. Related methods for separating hydrogen from a fluid stream, using the membrane structure, are also disclosed.Type: ApplicationFiled: September 28, 2012Publication date: January 24, 2013Applicant: GENERAL ELECTRIC COMPANYInventor: General Electric Company
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Publication number: 20130014642Abstract: The gas separation membrane of the present invention provides a gas separation membrane that exhibits superior gas permeability and separation selectivity and plasticity to the extent that it can endure bending testing and has little pinholes and a method for producing the gas separation membrane. Through the gas separation membrane of the present invention, it is possible to provide a superior gas separation method, a gas separation membrane module, and a gas separation and purification apparatus including the gas separation membrane module. Through the gas separation membrane of the present invention, it is possible to provide a superior gas separation method, a gas separation membrane module, and a gas separation apparatus including the gas separation membrane module.Type: ApplicationFiled: March 28, 2011Publication date: January 17, 2013Applicant: FUJIFILM CORPORATIONInventor: Satoshi Sano
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Publication number: 20130011249Abstract: A multi-layer filter, a gas turbine including a multi-layer filter, and a process of filtering are disclosed. The multi-layer filter includes a nano-fiber layer positioned to receive an airflow, a coalescing base medium layer, and a membrane layer. The coalescing base medium and the membrane layer are positioned for the airflow to travel through the nano-fiber layer and the coalescing base medium layer, then through the membrane layer. The gas turbine includes an inlet and the multi-layer filter in a filter portion.Type: ApplicationFiled: July 8, 2011Publication date: January 10, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Brad Aaron KIPPEL, Steve HINER
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Patent number: 8343257Abstract: The instant invention generally provides polymer pi-bond-philic filler composite comprising a molecularly self-assembling material and a pi-bond-philic filler, and a process of making and an article comprising the polymer pi-bond-philic filler composite. The instant invention also generally provides a process of separating a pi-bond-philic gas from a separable gas mixture comprising the pi-bond-philic gas.Type: GrantFiled: November 20, 2009Date of Patent: January 1, 2013Assignee: Dow Global Technologies LLCInventors: Scott T. Matteucci, Shawn D. Feist, Peter N. Nickias, Leonardo C. Lopez, Michael S. Paquette, Jeffrey C. Munro
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Publication number: 20120312168Abstract: Disclosed is a gas separation composite membrane comprising a polyamidoamine dendrimer (A) having a specific group, a vinyl alcohol-based polymer (B) containing 0.5 to 5 mol % of carboxyl groups, and a crosslinking agent (C) having an azetidinium group, wherein the mass ratio (A)/(C) of the polyamidoamine dendrimer (A) to the crosslinking agent (C) having an azetidinium group is 20/80 to 65/35, and the mass ratio (B)/(C) of the vinyl alcohol-based polymer (B) to the crosslinking agent (C) having an azetidinium group is 20/80 to 80/20. Thus, a gas separation composite membrane capable of separating a specific type of gas from a mixed gas containing water vapor is provided.Type: ApplicationFiled: February 15, 2011Publication date: December 13, 2012Applicant: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTHInventors: Shushi Asano, Yoshiki Nobuto, Naoki Fujiwara, Shuhong Duan, Shingo Kazama
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Patent number: 8323379Abstract: A method of improving the blood compatibility of a blood-contacting surface includes immobilizing carbonic anhydrase on the surface, wherein the surface exhibits carbonic anhydrase activity of at least 20% of maximum theoretical activity of the surface based on monolayer surface coverage of carbonic anhydrase.Type: GrantFiled: October 24, 2011Date of Patent: December 4, 2012Assignee: University of Pittsburgh—of the Commonwealth System of Higher EducationInventors: William J. Federspiel, Alan J. Russell, Heung-Il Oh, Joel Kaar
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Publication number: 20120297976Abstract: 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: ApplicationFiled: February 10, 2011Publication date: November 29, 2012Inventor: Satoshi Sano
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Patent number: 8317900Abstract: The invention relates to a method for producing membrane, in particular gas separation membrane, wherein the membrane comprises a selective separating layer. The following steps are carried out: a) a polymer solution is produced from at least one polymer and at least one polyglycol ether, b) the polymer solution is cast into a film, c) in a further step, the selective separating layer is produced from the film, preferably by drying. The invention, among other things, further relates to a membrane, in particular gas separation membrane, comprising a selective separating layer.Type: GrantFiled: December 22, 2010Date of Patent: November 27, 2012Assignee: Helmholtz-Zentrum Geesthacht Zentrum fur Material-und Kustenforschung GmbHInventors: Klaus-Viktor Peinemann, Grete Johannsen, Wilfredo Yave Rios, Anja Car
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Recovery of [CO]from seawater/aqueous bicarbonate systems using a multi-layer gas permeable membrane
Patent number: 8313557Abstract: The present invention is generally directed to a system for recovering CO2 from seawater or aqueous bicarbonate solutions using a gas permeable membrane with multiple layers. At elevated pressures, gaseous CO2 and bound CO2 in the ionic form of bicarbonate and carbonate diffuse from the seawater or bicarbonate solution through the multiple layers of the membrane. Also disclosed is the related method of recovering CO2 from seawater or aqueous bicarbonate solutions.Type: GrantFiled: June 25, 2009Date of Patent: November 20, 2012Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Heather D. Willauer, Dennis R Hardy, M. Kathleen Lewis, Ejiogu C. Ndubizu, Frederick Williams -
Patent number: 8303691Abstract: A composite membrane comprising a discriminating layer and a porous support layer for the discriminating layer, CHARACTERISED IN THAT the discriminating layer comprises at least 60 wt % of oxyethylene groups and the porous support layer has a CO2 gas flux of 5 to 150×10?5 m3 (STP)/m2·s·kPa at a feed pressure of 2.07 kPa. The membranes are particularly useful for purifying waste gas streams e.g. by removing greenhouse gases.Type: GrantFiled: April 6, 2009Date of Patent: November 6, 2012Assignee: Fujifilm Manufacturing Europe B.V.Inventor: Yujiro Itami
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Publication number: 20120255437Abstract: An air dryer cartridge assembly, used in a compressed air system, includes a rigid porous layer, a fibrous material layer, a diffusing layer and a desiccant for filtering and drying compressed air passing in a first direction during a charging cycle. The compressed air passes through diffusing layer, the fibrous material layer and the rigid porous layer in a second direction during a purging cycle. The desiccant, which is downstream of the rigid porous layer, the fibrous material layer and the diffusing layer during the charging cycle, reduces moisture in the compressed air during the charging cycle. The use of diffusing layer downstream of the fibrous material layer during a charging cycle disperses the compressed air so that moisture removal is improved in the desiccant.Type: ApplicationFiled: April 6, 2011Publication date: October 11, 2012Applicant: BENDIX COMMERCIAL VEHICLE SYSTEMS LLCInventors: William P. Fornof, Leonard A. Quinn
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Patent number: 8282708Abstract: Methods for the purification of steam, systems for purifying steam, methods for measuring and/or controlling steam flow rates, and uses for purified steam are provide. Also provided are substantially gas-impermeable membranes, such as perfluorinated ionomers (e.g., perfluoroethylene-sulfonic-acid/tetrafluoroethylene membranes), having a high ratio of water vapor permeation relative to gas permeation through the membrane. Also provided are methods of operation of such membranes at relatively high operating temperatures for the purification of steam and for operation of such membranes at relatively low temperature and sub-atmospheric pressures for the purification of steam. In a preferred embodiment, the system 400 for purifying steam comprises heater 404 for creating a source of a steam feed, and a purification device 416 for housing a substantially gas-impermeable membrane 424. In the operation of system 400, water, such as deionized water, is added to vessel 402 to provide a source of the steam feed.Type: GrantFiled: September 12, 2006Date of Patent: October 9, 2012Assignee: RASIRCInventors: Jeffrey J. Spiegelman, Richard D. Blethen
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Patent number: 8268042Abstract: The instant invention generally provides polymer inorganic clay composite comprising a molecularly self-assembling material and an inorganic clay, and a process of making and an article comprising the polymer inorganic clay composite.Type: GrantFiled: November 20, 2009Date of Patent: September 18, 2012Assignee: Dow Global Technologies LLCInventors: Leonardo C. Lopez, Scott T. Matteucci
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Patent number: 8262780Abstract: A composite filter media structure and an associated method of making are provided. The structure includes a base substrate that includes a nonwoven fabric substrate formed from a plurality of bicomponent synthetic fibers using a spunbond process. The composite filter media structure includes a surface layer deposited on one side of the base substrate where a thermal lamination process can be used to combine the base substrate and the surface layer. The surface layer is formed from a microporous expanded polytetrafluoroethylene membrane. In one aspect, the base substrate and the surface layer are configured to provide greater than 95% and equal to or less than 99.5% filtration efficiency measured in accordance with an EN 1822 test method. In another aspect, the filter media includes an embossing pattern or a plurality of corrugations formed using opposing rollers at a temperature of about 90° C. to about 140° C.Type: GrantFiled: July 22, 2009Date of Patent: September 11, 2012Assignee: BHA Group, IncInventors: Alan Smithies, Jack T. Clements, Cynthia Polizzi