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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 5949. Отображено 100.

16-02-2012 дата публикации

Devices, systems and methods for reducing the concentration of a chemical entity in fluids

Номер: US20120040429A1

Автор: Alan J. Russell, Heung-Il Oh, Joel L. Kaar, William J. Federspiel

Принадлежит: Individual

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.

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Номер записи: 1

08-03-2012 дата публикации

Method for Extracting Gas from Liquid

Номер: US20120055332A1

Автор: Steven Mahoney, Thomas Waters

Принадлежит: Serveron Corp

A method for extraction of gas from liquid provides for reliable and accurate extraction of gases dissolved in fluids and routing the extracted gas to an analytical instrument. An extraction module comprises one or more fluorosilicone membranes molded into the shape of a flattened disk. The membranes are retained in a housing in a spaced apart relationship. The membrane is permeable to target gas(es), but not to the fluid. Porous support members support the membranes and prevent damage to them and the housing defines separate fluid flow paths for the fluid and the gas extracted from it. Fluid is passed over the membrane in a first fluid phase; target compounds in the fluid diffuse across the membrane to a second fluid phase until equilibrium is achieved.

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Номер записи: 2

12-07-2012 дата публикации

Gas separation membrane

Номер: US20120174791A1

Автор: John R. Herron

Принадлежит: Individual

A method of forming a gas separation membrane including: depositing a first hydrophilic polymer solution; depositing on top of the first hydrophilic polymer solution a second, different hydrophilic polymer solution, thereby forming a two-layer polymer solution; forming the two-layer polymer solution into one of a forward osmosis membrane and a pressure retarded osmosis membrane by bringing the second, different hydrophilic polymer solution into contact with water to form the dense layer; coating one of the forward osmosis membrane and the pressure retarded osmosis membrane with a thin layer of a third, different, hydrophilic polymer more pH tolerant than the first and second hydrophilic polymer solutions to form a dense rejection layer thereon; and exposing one of the coated forward osmosis membrane and the coated pressure retarded osmosis membrane to a high pH solution. A gas separation membrane formed from the foregoing process.

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Номер записи: 3

19-07-2012 дата публикации

Process for producing zeolite film, and zeolite film obtained by the process

Номер: US20120183759A1

Автор: Makiko Niino, Makoto Miyahara, Shinji Nakamura

Принадлежит: NGK Insulators Ltd

A process for producing a zeolite film is provided in which seed crystals thinly adhere to the surface of a support to form a thin and even zeolite film having fewer defects than conventional zeolite films. Also provided is a zeolite film obtained by the producing process. The process for producing the zeolite film comprises: a particle adhesion step of allowing a slurry, where zeolite particles which become seeds are dispersed, to flow down on the surface of a base material by the self-weight of the slurry, so that the zeolite particles adhere to the base material; and a film formation step of immersing the base material, to which the zeolite particles adhere, into a sol to carry out hydrothermal synthesis, thereby forming the zeolite film on the base material.

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Номер записи: 4

26-07-2012 дата публикации

Multiple Layer HEPA Filter and Method of Manufacture

Номер: US20120186452A1

Автор: Alan Smithies, Cynthia Polizzi, Nusrat Farzana, Vishal Bansal

Принадлежит: General Electric Co

A multiple layer HEPA filter media includes, in an exemplary embodiment, a first layer that includes a nonwoven synthetic fabric formed from a plurality of bicomponent synthetic fibers with a spunbond process, and having a bond area pattern of a plurality of substantially parallel discontinuous lines of bond area. The filter media also includes a second layer laminated onto the first layer. The second layer is formed from a micro-porous membrane. Further, the filter media includes a third layer laminated onto the second layer, with the third layer including a synthetic nonwoven fabric formed from a plurality of synthetic fibers. The synthetic fibers include at least two different synthetic fibers having different melting points. The third layer has a cover factor of less than about seven. In addition, the multiple layer filter media further includes a plurality of corrugations.

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Номер записи: 5

04-10-2012 дата публикации

Hollow-fiber membrane contactors

Номер: US20120247327A1

Автор: Imona C. Omole

Принадлежит: ConocoPhillips Co

Methods and apparatus relate to recovery of carbon dioxide and/or hydrogen sulfide from a gas mixture. Separating of the carbon dioxide, for example, from the gas mixture utilizes a liquid sorbent for the carbon dioxide. The liquid sorbent contacts the gas mixture along asymmetric hollow-fiber membranes that enable transfer of the carbon dioxide from the gas mixture to the liquid sorbent.

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Номер записи: 6

15-11-2012 дата публикации

Novel Coated Membranes and Other Articles

Номер: US20120288630A1

Автор: John Charkoudian, Neil P. Soice

Принадлежит: Millipore Corp

The present invention provides porous media or membranes having a surface coating that includes a cross-linked terpolymer which has a superior combination of properties, including heat stable biomolecule resistant adsorptive properties, resistance to strong alkaline solutions, and low levels of extractable matter. In some preferred embodiments, the porous media is a porous membrane.

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Номер записи: 7

29-11-2012 дата публикации

Gas separation membrane and method for producing the same, and gas separating method, module and separation apparatus using the same

Номер: US20120297976A1

Автор: Satoshi Sano

Принадлежит: Fujifilm Corp

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.

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Номер записи: 8

13-12-2012 дата публикации

Cation exchange membrane having enhanced selectivity, method for preparing same and uses thereof

Номер: US20120312688A1

Автор: Thomas Berthelot, Xuan Tuan Le

Принадлежит: Commissariat a lEnergie Atomique et aux Energies Alternatives CEA

The present invention relates to a cation exchange membrane consisting in a polymeric matrix on the surface of which is(are) grafted at least one group of formula —R 1 —(CH 2 ) m —NR 2 R 3 and/or at least one molecule bearing at least one group of formula —R 1 —(CH 2 ) m —NR 2 R 3 wherein R 1 represents an aryl group; m represents 0, 1, or 3; R 2 and R 3 , either identical or different, represent a hydrogen or an alkyl group. The present invention relates to a method for preparing such a membrane and to its uses.

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Номер записи: 9

20-12-2012 дата публикации

Oxygen separation membrane

Номер: US20120318145A1

Автор: Joachim Opitz, Rainer Hilbig

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The invention relates to membranes, in particular oxygen separation membranes, which enable improved gas separation conditions with respect to cost, price, size, weight, and noise. The membrane, in particular oxygen separation membrane, according to the invention comprises a support layer ( 28 ) and a separation layer ( 30 ), wherein the separation layer ( 30 ) is permeable for oxygen and has a sorptive affinity for at least one other gas, in particular for nitrogen, wherein the membrane ( 20 ) is designed such that substantially only the separation layer ( 30 ) is heatable by a heating device.

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Номер записи: 10

03-01-2013 дата публикации

Fuel deoxygenation using surface-modified porous membranes

Номер: US20130000180A1

Автор: Haralambos Cordatos, Louis J. Spadaccini, Thomas G. Tillman

Принадлежит: United Technologies Corp

A fuel deoxygenation system includes an oxygen permeable membrane having a porous membrane and an oleophobic layer. The porous membrane has pores that create a passage extending from a first side to an opposite second side of the porous membrane. The pores have an average pore diameter less than or equal to about 0.06 microns. The oleophobic layer and the porous membrane allow oxygen to cross the oxygen permeable membrane but substantially prevent fuel from crossing the oxygen permeable membrane. A method for removing dissolved oxygen from a fuel includes delivering fuel to an oxygen permeable membrane and removing oxygen from the fuel using the oxygen permeable membrane. A method for modifying a surface of a porous membrane includes depositing an oleophobic treatment agent on the porous membrane, removing solvent and heating the porous membrane to form an oleophobic layer on the porous membrane.

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Номер записи: 11

28-03-2013 дата публикации

WATER-PROOF AIR-PERMEABLE FILTER AND USE OF THE SAME

Номер: US20130074691A1

Автор: Furuyama Satoru, Moriyama Junichi, Nagai Yozo

Принадлежит: NITTO DENKO CORPORATION

A water-proof air-permeable filter () includes: a resin film () having formed therein a plurality of through pores (); and a treated layer () having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film () such that the treated layer () has openings () at positions corresponding to the through pores (). The through pores () each have a predetermined size larger than or equal to 0.01 μm and smaller than or equal to 10 μm, and are uniformly distributed such that a density of the through pores falls within specific limits included in a range from 10 to 1×10pores/mm. 1. A water-proof air-permeable filter for ensuring ventilation and also preventing entry of water , the water-proof air-permeable filter comprising:a non-porous resin film having formed therein a plurality of through pores extending through the resin film in a thickness direction; anda treated layer having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film such that the treated layer has openings at positions corresponding to the plurality of through pores, wherein{'sup': 8', '2, 'the plurality of through pores each have a predetermined size larger than or equal to 0.01 μm and smaller than or equal to 10 μm, and are uniformly distributed such that a density of the plurality of through pores falls within specific limits included in a range from 10 to 1×10pores/mm.'}2. The water-proof air-permeable filter according to claim 1 , wherein a porosity of the resin film is 50% or less.3. The water-proof air-permeable filter according to claim 1 , wherein a ratio of a thickness of the resin film to the predetermined size is 1 or more and 10000 or less.4. The water-proof air-permeable filter according to claim 1 , wherein the resin film is made of a resin that can be decomposed by an alkali solution claim 1 , an oxidant solution claim 1 , or an alkali solution containing an ...

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Номер записи: 12

04-04-2013 дата публикации

HOLLOW FIBER APPARATUS AND USE THEREOF FOR FLUIDS SEPARATIONS AND HEAT AND MASS TRANSFERS

Номер: US20130081537A1

Автор: Bikson Benjamin, Ching Nathaniel, Etter Stephen

Принадлежит:

A hollow fiber fluid separation device includes a hollow fiber cartridge, comprising a plurality of hollow fiber membranes arranged around a central tubular core, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle. The tubesheets have boreholes in fluid communication with bores of the hollow fiber membrane. In at least one of the tubesheets, the boreholes are formed radially and are in communication with the central tubular core. The hollow fiber fluid separation device can be utilized in liquid separation applications such as ultrafiltration and in gas separation processes such as air separation. The design disclosed herein is light weight and compact and is particularly advantageous at high operating temperatures when the pressure of the feed fluid introduced into the bores of hollow fibers is higher than the pressure on the shell side of the device. 1. A fluid separation apparatus comprising:a) a cartridge including a hollow fiber membrane bundle, comprising a plurality of hollow fibers arranged around a substantially tubular core member, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle, said tubesheets having boreholes in fluid communication with bores of the hollow fiber membranes; i. a first inlet port for introducing a feed fluid, the first inlet port being in fluid communication with boreholes in the first tubesheet, said boreholes being in fluid communication with bores of the hollow fibers;', 'ii. a second outlet port for removal of non-permeate portion of the feed fluid, the second outlet port being in fluid communication with boreholes in the second tubesheet, said boreholes being in fluid communication with bores of the hollow fibers; and', 'iii. a third port for removal of permeate fluid from the shell side of hollow fiber membranes,, 'b) a housing surrounding the cartridge, wherein the housing haswherein the boreholes are formed radially in at ...

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Номер записи: 13

11-04-2013 дата публикации

USE OF MODIFIED HOLLOW FIBER MATERIALS FOR REMOVING EXOTOXINS PRODUCED BY ESCHERICHIA COLI FROM LIQUIDS AND METHODS FOR TREATING CONCOMITANT DISEASES

Номер: US20130090597A1

Автор: Jaeger Beate Roxane, Seidel Dietrich

Принадлежит: SAFE bt, Inc.

The present invention relates to chemically modified hollow fiber materials for extracorporeally removing exotoxins produced by pathogenic Escherichia coli from protein containing liquids, particularly from blood or plasma, as well as the use in treating patients suffering from diseases which, for example, are caused by enterohemorrhagic bacteria (EHEC infections) or other pathogenic like enterotoxigenic (ETEC) or enteroaggregative (EAEC). 1Escherichia coli. A substance for use in the treatment of intestinal diseases associated with diarrhea and , if applicable , with sequelae , such intestinal diseases being caused by exotoxin-producing , the substance containing modified hollow fiber materials selected from the group consisting of polyamide , polysulfone , polyether , polyethylene , polypropylene , polyester and derivatives and/or mixtures thereof , wherein said hollow fiber materials are modified to contain tentacles comprising anion exchange groups , wherein the anion exchange groups comprise at least one of the group consisting of synthetic polycationic chains and semisynthetic polycationic chains and natural polycationic chains , wherein said synthetic , semisynthetic and natural polycationic chains are linear or branched.2. The substance according to claim 1 , wherein hollow fibers are used that were modified by graft polymerization and/or chemical immobilisation.3. The substance according to claim 1 , wherein the anion exchange groups consist of polycationic chains containing tertiary amines or quaternary amines.4. The substance according to claim 1 , wherein anion exchanger groups are selected from the group consisting of di- or trialkylaminoalkyl claim 1 , di- or trialkylaminoaryl claim 1 , di- or triarylaminoalkyl claim 1 , di- or triarylaminoaryl claim 1 , di- or trialkylammoniumalkyl claim 1 , di- or triarylammoniumalkyl claim 1 , di- or triarylammoniumaryl claim 1 , di- or trialkylammoniumaryl residues claim 1 , polymers from amino acids that are ...

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Номер записи: 14

18-04-2013 дата публикации

DEFECTLESS HYDROGEN SEPARATION MEMBRANE, PRODUCTION METHOD FOR DEFECTLESS HYDROGEN SEPARATION MEMBRANE AND HYDROGEN SEPARATION METHOD

Номер: US20130092025A1

Автор: MAEDA Takashi, MATSUMURA Yasuyuki, NEGISHI Eiji, Ogawa Minoru

Принадлежит:

A defect-free hydrogen separation membrane includes a metal thin membrane. The metal thin membrane includes a first metal layer composed of palladium on a porous support without substantial penetration into surface pores of the porous support and a second metal layer on the first metal layer. The second metal layer is a product of palladium deposition and closes defects being open on the surface of the first metal layer. 1. A defect-free hydrogen separation membrane comprising a metal thin membrane including a first metal layer composed of palladium on a porous support without substantial penetration into surface pores of said porous support and a second metal layer on said first metal layer , wherein said second metal layer is a product of palladium deposition and closes defects being open on the surface of said first metal layer.2. A defect-free hydrogen separation membrane comprising a metal thin membrane including a first metal layer , composed of at least one kind of metal forming a palladium alloy , on a porous support without substantial penetration into surface pores of said porous support and a second metal layer on said first metal layer wherein said second metal layer is a product of deposition of at least one kind of metal forming a palladium alloy and closes defects being open on the surface of said first metal layer.3. The defect-free hydrogen separation membrane according to claim 1 , wherein the thickness of the metal thin membrane is 3 μm or less.4. The defect-free hydrogen separation membrane according to claim 1 , wherein the defect-free hydrogen separation membrane is further processed with a heat treatment.5. The defect-free hydrogen separation membrane according to claim 1 , wherein the hydrogen permeance is 3 mmol/s/m/Paor more at 400° C.6. The defect-free hydrogen separation membrane according to claim 1 , wherein metal forming a palladium thin membrane or a palladium alloy thin membrane is deposited on said metal thin membrane claim 1 , and ...

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Номер записи: 15

02-05-2013 дата публикации

VENTILATION MEMBER AND VENTED HOUSING INCLUDING SAME

Номер: US20130104739A1

Автор: Furuyama Satoru, SUZUKI Masatoshi, Tezuka Teppei

Принадлежит: NITTO DENKO CORPORATION

A vented housing having high flame resistance, water resistance and insulation is provided. Furthermore, a ventilation member to be included in such a vented housing is provided. The ventilation member according to the present invention is a ventilation member to be fixed to a housing so as to cover an opening of the housing. The ventilation member includes: a support body in which a through hole is formed; and a gas permeable membrane that covers the through hole and allows a gas passing through the opening to permeate through the gas permeable membrane. The support body contains a polyphenylene ether resin or a polyphenylene oxide resin, and the gas permeable membrane is composed only of a porous polytetrafluoroethylene membrane. 1. A ventilation member to be fixed to a housing so as to cover an opening of the housing , comprising:a support body in which a through hole is formed; anda gas permeable membrane that covers the through hole and allows a gas passing through the opening to permeate through the gas permeable membrane,wherein the support body contains a polyphenylene ether resin or a polyphenylene oxide resin, andthe gas permeable membrane is composed only of a porous polytetrafluoroethylene membrane.2. The ventilation member according to claim 1 , wherein the gas permeable membrane is welded to a surface of the support body.3. The ventilation member according to claim 1 , wherein the support body has a fixing face to be fixed to the housing claim 1 , anda welding rib is disposed on the fixing face.4. The ventilation member according to claim 1 , wherein the support body has a fixing face to be fixed to the housing claim 1 , andthe fixing face is composed of the polyphenylene ether resin or the polyphenylene oxide resin.5. The ventilation member according to claim 1 , wherein the support body is a flat plate.6. The ventilation member according to claim 1 , wherein the gas permeable membrane has a weight per unit area of 20 g/mor more.7. The ventilation ...

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Номер записи: 16

09-05-2013 дата публикации

SILICA FILM FILTER AND PROCESS FOR PRODUCING SILICA FILM FILTER

Номер: US20130112078A1

Автор: KAWAI Masaaki, MORI Nobuhiko, NODA Kenichi, SATOH Aya, TAKAGI Mariko

Принадлежит: NGK Insulators, Ltd.

There is provided a silica membrane filter having performance of selectively separating an aromatic compound and performance of selectively separating an alcohol. The silica membrane filter is provided with a porous substrate and a silica membrane. The ratio of a He gas permeation amount to an Ngas permeation amount (He gas permeation amount/Ngas permeation amount) is 7 or less, and the ratio of the Ngas permeation amount to a SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 1.5 or more. 1. A silica membrane filter comprising a porous substrate and a silica membrane provided on a surface of the porous substrate ,{'sub': 2', '2', '2', '6', '2', '6, 'wherein the ratio of a He gas permeation amount to an Ngas permeation amount (He gas permeation amount/Ngas permeation amount) is 7 or less, and the ratio of the Ngas permeation amount to a SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 1.5 or more.'}2. The silica membrane filter according to claim 1 , wherein the ratio of the He gas permeation amount to the Ngas permeation amount (He gas permeation amount/Ngas permeation amount) is 1.0 to 2.6 claim 1 , and the ratio of the Ngas permeation amount to the SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 1.5 to 10.3. The silica membrane filter according to claim 1 , wherein the silica membrane contains an aryl group.4. The silica membrane filter according to claim 3 , wherein the aryl group of the silica membrane is one of a phenyl group claim 3 , a benzyl group claim 3 , a tolyl group claim 3 , and a xylyl group.5. The silica membrane filter according to claim 4 , wherein the ratio of the Ngas permeation amount to the SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 3.0 to 10.6. The silica membrane filter according to claim 1 , wherein the silica membrane contains an alkyl group.7. The silica membrane filter according to claim 6 , wherein the alkyl group has a ...

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Номер записи: 17

09-05-2013 дата публикации

Organic/inorganic fouling resistant hybrid compound, fouling resistant membrane, and method of preparing fouling resistant membrane

Номер: US20130112615A1

Автор: Hyo Kang, Sung Soo Han

Принадлежит: SAMSUNG ELECTRONICS CO LTD

An organic/inorganic fouling resistant composite compound is disclosed, which includes a core of a polyhedron of polyhedral oligomeric silsesquioxane and at least one arm connected to a silicon atom of the polyhedral oligomeric silsesquioxane. The at least one arm includes a vinyl-based first structural unit including at least one ethylene oxide group at a side chain of the vinyl-based first structural unit and an oleophobic vinyl-based second structural unit including a silicon group at the side chain.

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Номер записи: 18

16-05-2013 дата публикации

FUNCTIONALIZED NONWOVEN ARTICLE

Номер: US20130122215A1

Автор: Bothof Catherine A., Jr. Clinton P., Seshadri Kannan, Waller, Weiss Douglas E.

Принадлежит: 3M INNOVATIVE PROPERTIES COMPANY

A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising anionic monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as monoclonal antibodies (MAb), from a fluid mixture. 1. A method of a functionalized nonwoven article comprising:a. providing a nonwoven substrate having average fiber diameter of 1 to 6 micrometers, and a void volume of 50 to 95%;b. exposing the nonwoven substrate to ionizing radiation in an inert atmosphere, and a) 80 to 98 wt. % of grafting anionic monomers;', 'b) 2 to 20 wt. % of grafting poly(alkylene oxide) monomers;', 'c) 0 to 10 wt. % of second hydrophilic monomers., 'c. imbibing the exposed substrate with a solution comprising grafting anionic monomers to graft polymerize said monomers to the surface of the nonwoven substrate, said imbibing solution comprising2. The method of wherein the nonwoven substrate has a tensile strength of at least 4.0 Newtons prior to grafting.4. The method of wherein the grafting poly(alkylene oxide) monomers are of the formula:{'br': None, 'sup': 1', '4, 'sub': 2', 'm, 'Z-Q-(CH(R)—CH-Q)-R,\u2003\u2003III'}{'sup': 1', '4', '1', '1, 'sub': 3', '1', '4', '2, 'wherein Z is a polymerizable ethylenically unsaturated moiety, Ris a H or CH, Ris a H, a Cto Calkyl group, aryl group, or combinations thereof, m is from 2 to 100, and Q is a divalent linking group selected from —O—, —NR—, —CO— and —CONR.'}5. The method of wherein the imbibing solution further comprises a second hydrophilic grafting monomer.6. The method of wherein the imbibing solution comprises an aqueous/water-soluble organic solvent solution claim 1 , wherein said organic solvent contains no tertiary hydrogen atoms.7. The method of wherein the imbibing solution comprises no polyethylenically unsaturated monomers.8. The method of wherein the weight of the grafting ...

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Номер записи: 19

23-05-2013 дата публикации

ORGANOPHILIC POLYSILSESQUIOXANE MEMBRANES FOR SOLVENT NANOFILTRATION AND PERVAPORATION

Номер: US20130126432A1

Автор: Castricum Hessel Lennart, Kreiter Robert, Paradis Goulven Gildas, Ten Elshof Johan Evert, Vente Jaap Ferdinand

Принадлежит: STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND

Selective retaining a relatively hydrophilic molecule from a mixture of a relatively hydrophobic molecule and the relatively hydrophilic molecule can be achieved using a hydrophobic, microporous hybrid membrane based on silica, wherein at least 25% of the silicon atoms is bound to a bridging C-C-hyrdocarbylene group. The average number of carbon atoms of the bridging groups and any additional monovalent organic groups, taken together, is at least 3.5. The membrane can be part of a production facility for separating alcohol/water mixtures. 117-. (canceled)18. A hydrophobic membrane comprising a layer based on silica , wherein{'sub': 1', '12', '1', '30, '(a) at least 25% of the silicon atoms has a bridging C-Cdivalent hydrocarbylene group as a substituent, and optionally further silicon atoms having a monovalent C-Corganic group as a substituent;'}(b) either the divalent hydrocarbylene group has a minimum length of 8 carbon atoms, or the monovalent organic group has a minimum length of 6 carbon atoms, or both; and(c) the average number of carbon atoms in the monovalent organic groups and the divalent hydrocarbylene groups taken together is at least 3.5.19. The membrane according to claim 18 , wherein at least 30% of the silicon atoms has a monovalent C-C.20. The membrane according to claim 19 , wherein at least 30% of the silicon atoms has a a C-Chydrocarbyl group.21. The membrane according to claim 18 , comprising both of the monovalent and divalent groups.22. The membrane according to claim 21 , wherein the molar ratio of the monovalent groups to the divalent groups is between 9:1 and 1:2.23. The membrane according to claim 21 , wherein the average number of carbon atoms of the monovalent groups and the divalent groups is at least 4.24. The membrane according to claim 23 , wherein the average number of carbon atoms of the monovalent groups and the divalent groups is between 4.5 and 12.25. The membrane according to claim 18 , having a thickness between 20 nm and 2 μm ...

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Номер записи: 20

06-06-2013 дата публикации

Radiation-resistant microporous membrane having a hydrophobicity gradient

Номер: US20130139685A1

Автор: Eberhard Wuenn, Tobias Schleuß

Принадлежит: SARTORIUS STEDIM BIOTECH GMBH

The present invention relates to a radiation-resistant microporous membrane having a hydrophobicity gradient, to a method for the preparation thereof, and to the use of the membrane in the sterilizing filtration of gaseous fluids or as a liquid barrier in liquid-containing systems to be vented.

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Номер записи: 21

20-06-2013 дата публикации

METHOD OF MAKING A COMPOSITE GAS SEPARATION MODULE

Номер: US20130152784A1

Автор: SAUKAITIS John Charles

Принадлежит: SHELL OIL COMPANY

A method of making a composite gas separation module by providing a porous support material having deposited thereon a metal membrane layer, by imposing upon the surface of the metal membrane layer certain surface characteristics including an abrasion pattern and a relatively high surface roughness that provides for surface activation that enhances the placement thereon of a subsequent metal membrane layer without the use of a chemical activating solution. The composite gas separation module is useful in the separation of hydrogen from hydrogen-containing gas streams. 1. A method of making a composite gas separation module , wherein said method comprises:providing a porous support having a metal membrane layer thereon with a surface;imposing onto the surface of said metal membrane layer by use of an abrasive media, a surface morphology that provides for an activated surface having enhanced activation properties for the placement thereon of a subsequent metal membrane layer, wherein said activated surface has an abrasion pattern and a mean surface roughness (Sa) in the range of from above 0.8 micron up to 2.5 microns;placing said subsequent metal membrane layer upon said activated surface, without further activation with a chemical activating solution; andannealing said subsequent metal membrane layer to provide an annealed metal membrane layer.2. The method as recited in claim 1 , wherein the activated surface has a mean surface roughness (Sa) in the range of from 0.85 micron to 1.5 microns.3. The method as recited in claim 2 , wherein the metal membrane layer whose surface is activated comprises palladium.4. The method as recited in claim 3 , wherein an intermetallic diffusion barrier is placed between said porous support and said palladium membrane layer.5. The method as recited in claim 2 , wherein the abrasive media used to impose the specified mean surface roughness has an average particle size of from 1 to 10 microns.6. The method as recited in claim 5 , ...

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Номер записи: 22

27-06-2013 дата публикации

CO2-FACILITATED TRANSPORT MEMBRANE AND METHOD FOR PRODUCING THE SAME

Номер: US20130160650A1

Автор: MATSUYAMA HIDETO, MORIMOTO KAORI, Okada Osamu, SHIMADA KEIKO, TERAMOTO MASAAKI, YEGANI REZA

Принадлежит: RENAISSANCE ENERGY RESEARCH CORPORATION

A CO-facilitated transport membrane of excellent carbon dioxide permeability and CO/Hselectivity, which can be applied to a COpermeable membrane reactor, is stably provided. The CO-facilitated transport membrane is formed such that a gel layer obtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane . More preferably, a gel layer supported by a hydrophilic porous membrane is coated with hydrophilic porous membranes and 1. An apparatus for removing COfrom a mixed gas containing at least COand H , wherein:{'sup': 2', '2', '2', '2, 'the apparatus comprises a CO-facilitated transport membrane and is adapted to feed the mixed gas to a feed side of the CO-facilitated transport membrane at 100° C. or higher and to remove the COfrom the mixed gas at a permeation side of the CO-facilitated transport membrane,'}{'sup': 2', '2', '2, 'the CO-facilitated transport membrane comprises a gel layer that is supported by a hydrophilic porous membrane and has CO/Hselectivity under a temperature condition of 100° C. or higher; and'}the gel layer is formed by adding an additive of cesium carbonate or cesium bicarbonate or cesium hydroxide or rubidium carbonate or rubidium bicarbonate or rubidium hydroxide to a gel membrane containing moisture.2. The apparatus according to claim 1 , wherein the gel membrane containing moisture is a polyvinyl alcohol-polyacrylic acid copolymer gel membrane.3. The apparatus according to claim 2 , wherein the gel layer is formed such that a weight ratio of cesium carbonate relative to a total weight of the polyvinyl alcohol-polyacrylic acid copolymer gel membrane and cesium carbonate is 65% by weight or more and 85% by weight or less.4. The apparatus according to claim 1 , wherein the CO-facilitated transport membrane has CO/Hselectivity of 90 or more under a temperature condition of 100° C. or higher.5. The apparatus according to claim 1 , wherein the gel layer is coated ...

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Номер записи: 23

25-07-2013 дата публикации

MEMBRANE BASED APPARATUS FOR MEASUREMENT OF VOLATILE PARTICLES

Номер: US20130186269A1

Автор: Allman Steve L., Cheng Meng-Dawn

Принадлежит: UT-BATTELLE, LLC

A vapor particle separator including a temperature controlled chamber for desorbing vapors from the particulates of an exhaust gas and a separation chamber including a micro porous membrane. The micro porous membrane provides an interface between at least one particle passageway and at least one vapor passageway through the separation chamber. The particle passageway extends from an entrance to the separation chamber to a particle exit from the separation chamber. The vapor passageway extends from the micro-porous membrane to a vapor exit from the separation chamber that is separate from the particle exit from the separation chamber. 1. A vapor particle separator comprising:a temperature controlled chamber for desorbing vapors from the particulates of an exhaust gas that enters the vapor particle separator through the temperature controlled chamber; anda separation chamber including a micro porous membrane for providing an interface between at least one particle passageway and at least one vapor passageway through the separation chamber, the particle passageway extends from an entrance to the separation chamber to a particle exit of the separation chamber, the vapor passageway extends from the micro-porous membrane to a vapor exit from the separation chamber that is separate from the particle exit from the separation chamber, wherein the micro porous membrane has a pore size that allows for diffusion of the vapors from the particle passageway through the micro porous membrane to the vapor passageway, wherein the particles having a lower diffusivity than the vapors are obstructed from entering the vapor passageway.2. The vapor particle separator of claim 1 , wherein the temperature controlled chamber comprises a metallic tube that is positioned within a heater.3. The vapor particle separator of claim 2 , wherein the metallic tube is composed of a metal selected from the group consisting of stainless steel claim 2 , aluminum claim 2 , copper claim 2 , titanium claim 2 ...

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Номер записи: 24

25-07-2013 дата публикации

FRAME SYSTEM FOR MEMBRANE FILTRATION MODULES

Номер: US20130186817A1

Автор: Biltoft Bruce Gregory, Bowmer Stephen, Collignon Michael, Lazaredes Huw Alexander, McMahon Robert James, Polson James W., Rogers Peter

Принадлежит: Siemens Industry, Inc.

A module arrangement () according to an embodiment of the invention consists of a plurality of membrane modules () arranged in a two dimensional array () and extending between upper and lower block-type manifolds () and (), respectively. The array of modules is further divided into sub-groups of modules () separated from each other by space () extending transversely across the membrane array (). An integrated support frame () is positioned in the space () between the sub-groups () and is fixed to the upper and lower manifold blocks () and () to form an integrated support structure within the module array (). 1. A filtration system comprising:a plurality of membrane modules arranged in a membrane module array divided into membrane module array sub-groups by a spacing between a first plurality of modules forming a first sub-group and a second plurality of modules forming a second sub-group, the membrane modules extending between a first fluid communicating manifold and a second fluid communicating manifold; andan integrated support member located within the spacing and including one of a first portion of the support member disposed in an aperture in the first fluid communicating manifold and a second portion of the support member disposed in an aperture in the second fluid communicating manifold, the integrated support member including an upper cross portion and a pair of vertically extending arms affixed to the upper cross portion.2. The system of claim 1 , wherein the upper cross portion includes an extended portion extending outside of a perimeter of a rectangle defined by the upper cross portion and the pair of vertically extending arms.3. The system of claim 2 , wherein the extended portion of the upper cross portion supports a longitudinal support rail coupled to the first fluid communicating manifold.4. The system of claim 1 , wherein the vertically extending arms include extended portions extending outside of a perimeter of a rectangle defined by the upper ...

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Номер записи: 25

25-07-2013 дата публикации

FORWARD OSMOSIS MEMBRANE BASED ON AN IPC SPACER FABRIC

Номер: US20130186827A1

Автор: Bharwada Upen J., Farr Isaac V., Gullinkala Tilak, Herron John R.

Принадлежит: HYDRATION SYSTEMS, LLC

A forward osmosis (FO) membrane structure comprising a support based on an integrated permeate channel (IPC) fabric and a forward osmosis membrane embedded in the support is disclosed. 1. A forward osmosis membrane structure comprisinga support comprising IPC fabric that is comprised ofan upper fabric layer having an inner surface and an outer surface;a lower fabric layer having an inner surface and an outer surface; andmonofilament threads disposed between said upper fabric layer and said lower fabric layer and linking the upper fabric layer to the lower fabric layer;wherein the outer surfaces of the upper and lower fabric layers are provided with a forward osmosis polymer layer.2. The forward osmosis structure of claim 1 , wherein the IPC fabric is a knitted fabric.3. The forward osmosis structure of claim 1 , wherein the IPC fabric is comprised of a material selected from the group consisting of: polyester claim 1 , nylon claim 1 , polyamide claim 1 , polyphenylene sulphide claim 1 , polyethylene and polypropylene.4. The forward osmosis structure of claim 1 , wherein the threads define macrovoids.5. The forward osmosis structure of claim 1 , wherein the IPC fabric is comprised of microfilament threads having a diameter in the range of about 50 to about 500 microns.6. The forward osmosis structure of claim 5 , wherein the IPC fabric is comprised of microfilament threads having a diameter in the range of about 60 to about 150 microns.7. A method for producing a forward osmosis membrane structure claim 5 , comprising the steps of: an upper fabric layer having an inner surface and an outer surface;', 'a lower fabric layer having an inner surface and an outer surface; and', 'monofilament threads disposed between said upper fabric layer and said lower fabric layer and linking the upper fabric layer to the lower fabric layer;, '(a) providing a support comprising an IPC fabric that is comprised of'}(b) embedding a forward osmosis membrane on the outer surfaces of the ...

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Номер записи: 26

29-08-2013 дата публикации

Crosslinked Membrane And Polymer For Making Same And Method Of Using Membrane

Номер: US20130220119A1

Автор: Koros William J., Miller Stephen J., Staudt-Bickel Claudia, Wallace David, Wind John D.

Принадлежит: Chevron U.S.A. INC.

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 COin combination with a high CO/CHselectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed. 1. A hollow fiber polymer membrane , comprising:{'sub': 2', '2', '4, 'a hollow fiber crosslinked polymer selected from the group consisting of polyimides, poyletherimides, polyethersulfones and polysulfones, having covalent ester crosslinks; and having a COpermeance of at least 20 GPU and a CO/CHselectivity of greater than 20, at 35 degrees C. and a pressure of 100 psia.'}2. The hollow fiber polymer membrane of wherein the polymer has an average molecular weight of between 20 claim 1 ,000 and 200 claim 1 ,000.3. The hollow fiber polymer membrane of wherein the membrane material has an average molecular weight greater than the entanglement MW of the polymer.5. A method of making a crosslinked hollow fiber membrane comprising:{'sub': 2', '2', '4, 'preparing a polymer comprising a predetermined quantity of crosslinkable sites, the polymer selected from the group consisting of polyimides, poyletherimides, polyethersulfones and polysulfones, having covalent ester crosslinks having a COpermeance of at least 20 GPU and a CO/CHselectivity of greater than 20, at 35 degrees C. and a pressure of 100 psi; and'}forming a hollow fiber from the polymer.6. A process for producing hydrocarbon products comprising:separating two gases having different molecular sizes in a feedstream including these two gas components, the process including:{'sub': 2', '2', '4, '(a) providing a hollow fiber crosslinked polymer selected from the group consisting of ...

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Номер записи: 27

29-08-2013 дата публикации

OXYGEN SEPARATION MODULE AND APPARATUS

Номер: US20130220127A1

Автор: CHRISTIE GERVASE MAXWELL, NEFF JERRINE L., REED DAVID M., SELOVER ARTHUR C.

Принадлежит:

A module and an apparatus incorporating such module utilizing a plurality of tubular membrane elements, each configured to separate oxygen from an oxygen containing feed stream when an electric potential difference is applied to induce oxygen ion transport in an electrolyte thereof. The tubular membrane elements can be arranged in a bundle that is held in place by end insulating members. The insulating members can be positioned within opposed openings of end walls of a heated enclosure and can incorporate bores to allow an oxygen containing feed stream to flow past exposed ends of the tubular membrane elements for cooling the end seals of such elements. Further, first and second manifolds can be provided in a module in accordance with the present invention to collect separated oxygen from two separate portions of the tubular membrane elements. 115-. (canceled)16. An oxygen separator module for an electrically driven oxygen separator apparatus , said oxygen separator module comprising:a plurality of tubular membrane elements pneumatically coupled together, each of the tubular membrane elements having an anode layer, a cathode layer, an electrolyte layer located between the anode layer and the cathode layer and each of the tubular membrane elements configured to separate oxygen from an oxygen containing feed stream when an electric potential difference is applied between the anode layer and the cathode layer to induce oxygen ion transport in the electrolyte;a plurality of end seals located at opposite ends of the plurality of tubular membrane elements;end insulation members located proximate the end seals wherein the plurality of tubular membrane elements are arranged in a bundle and held in place by the end insulation members;a plurality of hollow tubes penetrating one or more of the end seals at opposite ends of the plurality of tubular membrane elements, the hollow tubes configured to permit flow of oxygen from the interior of the tubular membrane elements;the at ...

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Номер записи: 28

19-09-2013 дата публикации

METHODS OF PREPARING A CROSSLIKED FIBER MEMBRANE

Номер: US20130239805A1

Автор: Husain Shabbir

Принадлежит: Chevron U.S.A. INC.

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. 1. A method for preparing a crosslinked hollow fiber membrane , the method comprising spinning into a monoesterifed fiber a one phase solution comprising a monoesterified polyimide polymer , acetone as a volatile solvent , a spinning solvent , and a spinning non-solvent , 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; andsubjecting the monoesterified fiber to one of esterfication and transesterification conditions to prepare a crosslinked hollow fiber membrane.2. The method of claim 1 , wherein the monoesterifed fiber is subjected to esterification conditions.3. The method of claim 1 , wherein the monoesterified polyimide polymer is present in the spinning solution in an amount between about 20 and about 50 weight percent.4. The method of claim 1 , wherein the monoesterified claim 1 , polyimide polymer has an average molecular weight between about 50 claim 1 ,000 and about 300 claim 1 ,000.5. The method of claim 1 , wherein the monoesterified claim 1 , polyimide polymer has a polydispersity index between about 2 and about 5.6. The method of claim 1 , wherein the volatile solvent is present in an amount of greater than 25 wt. % to about 35 wt. % claim 1 , based on the total weight of the solution.7. The method of claim 1 , wherein the volatile solvent is present in an amount of about 35 wt. % to about 50 wt. % claim 1 , based on the total weight of the solution.8. The method of claim 1 , wherein the spinning solvent is an organic solvent ...

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Номер записи: 29

19-09-2013 дата публикации

SEPARATION MEMBRANE, HYDROGEN SEPARATION MEMBRANE INCLUDING THE SEPARATION MEMBRANE, AND DEVICE INCLUDING THE HYDROGEN SEPARATION MEMBRANE

Номер: US20130243660A1

Автор: KIM Kwang Hee, LEE Jae Ho, PARK Hyeon Cheol, RYU Byung Ki

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A separation membrane including an alloy, the alloy including at least one Group 5 element, and at least one selected from Pt and Ir. 1. A separation membrane comprising an alloy , the alloy comprising:at least one Group 5 element;at least one selected from Ti, Zr, and Hf; andat least one selected from Pt and Ir.2. The separation membrane of claim 1 , wherein the alloy comprises a crystalline alloy having a body-centered cubic structure formed by the at least one Group 5 element claim 1 , the at least one selected from Ti claim 1 , Zr claim 1 , and Hf claim 1 , and the at least one selected from Pt and Ir.3. The separation membrane of claim 2 , wherein a lattice constant of the crystalline alloy is about 3.2 to about 3.4 angstroms.4. The separation membrane of claim 1 , wherein the separation membrane has a porosity of less than about 1 volume percent to 0 volume % claim 1 , based on the total volume of the separation membrane.5. The separation membrane of claim 1 , wherein the separation membrane has a thickness of about 1 to about 1000 micrometers.6. The separation membrane of claim 1 , comprisingabout 10 to about 100 atomic percent of the at least one Group 5 element,about 0.1 to about 70 atomic percent of the at least one selected from Ti and Hf, andabout 0.1 to about 20 atomic percent of the at least one selected from Pt and Ir, each based on a total content of the alloy of the separation membrane.7. The separation membrane of claim 1 , wherein the at least one Group 5 element is Nb.8. The separation membrane of claim 1 , wherein the separation membrane has an elongation rate of about 5 to about 25 percent claim 1 , when measured by the ASTM E8M standard micro-tensile test.9. The separation membrane of claim 1 , wherein the separation membrane has a maximum load of about 50 to about 600 megaPascals claim 1 , when measured by the ASTM E8M standard micro-tensile test.10. A hydrogen separation membrane comprising the separation membrane of .11. The hydrogen ...

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Номер записи: 30

26-09-2013 дата публикации

UV-REARRANGED PIM-1 POLYMERIC MEMBRANES AND A PROCESS OF PREPARING THEREOF

Номер: US20130247756A1

Автор: Chung Tai-Shung Neal, Li Fuyun, Xiao Youchang

Принадлежит: NATIONAL UNIVERSITY OF SINGAPORE

The present invention relates to UV-rearranged PIM-1 polymeric membranes that can be used for advanced hydrogen purification and production. The present invention also relates to a process of preparing UV-rearranged PIM-1 polymeric membranes. The present invention further relates to a method of separating gas mixtures using the UV-rearranged PIM-1 polymeric membranes of the present invention. 2. The material of claim 1 , wherein the material comprises a membrane claim 1 , wherein the membrane comprises the monomer.3. The material of claim 2 , wherein the material can be used for separation of a gas mixture selected from the group of gas mixtures consisting of H/CO claim 2 , H/CO/CO claim 2 , CO/CH claim 2 , CO/CH/HS claim 2 , H/Nand O/N.4. A process of preparing the material of claim 1 , comprising:(a) providing an organic polymeric material containing a micro-porous structure and polymer chains; and(b) performing ultraviolet (UV) irradiation on the organic polymeric material to form a UV irradiated organic polymeric material.5. The process of claim 4 , further comprising:(c) performing a homolytic cleavage reaction on C—H bonds selected from the group of intra-molecular C—H bonds of the UV irradiated organic polymeric material, intermolecular C—H bonds of the UV irradiated organic polymeric material and a combination thereof.6. The process of claim 5 , wherein the micro-porous structure of the organic polymeric material comprises large micro-pores and ultrafine micro-pores claim 5 , wherein the large micro-pores are due to the contorted or rigid nature of the organic polymeric material.7. The process of claim 6 , comprising destructing the micro-porous structure of the organic polymeric material.8. The process of claim 7 , comprising rearranging the polymer chains of the organic polymeric material.9. The process of claim 8 , wherein the destructing of the micro-porous structure and the rearranging of the polymer chains results in efficient polymer chain packing and ...

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Номер записи: 31

03-10-2013 дата публикации

CROSSLINKED SILANE-MODIFIED MOLECULARLY SELF-ASSEMBLING MATERIAL

Номер: US20130255490A1

Автор: Harris William J., Krishnamurthy Pushkala, Matteucci Scott T.

Принадлежит: Dow Global Technologies LLC

The present invention generally relates to a crosslinked silane-modified molecularly self-assembling material, cured manufactured article comprising the crosslinked silane-modified molecularly self-assembling material, semipermeable membrane comprising the crosslinked silane-modified molecularly self-assembling material, method of using the semipermeable membrane to separate an acid gas from a separable gas mixture comprising the acid gas and a permeation-resistant gas, and method of preparing the cured manufactured article from a curable manufactured article comprising a shaped reactive silane-modified molecularly self-assembling material. 2. The cured manufactured article as in claim 1 , wherein each of Rand Rindependently is Rand each Rindependently is halo claim 1 , (C-C)hydrocarbyl-O— claim 1 , or (C-C)hydrocarbyl-C(O)O—.3. (canceled)4. The cured manufactured article as in claim 1 , wherein in the molecularly self-assembling material claim 1 , prior to covalent bonding to the at least one halo-silyl or oxy-silyl containing functional group (the premodification MSA) claim 1 , comprised repeat units of formula I and at least one second repeat unit selected from the group consisting of the ester-amide repeat units of Formula II and III and the ester-urethane repeat units of Formula IV claim 1 , or combinations thereof; wherein: Rat each occurrence independently is a bond or a non-aromatic (C-C)hydrocarbylene group; n is at least 1 and has a mean value less than 2; and w represents the ester mol fraction of Formula I claim 1 , and x claim 1 , y and z represent the amide or urethane mole fractions of Formulas II claim 1 , III claim 1 , and W claim 1 , respectively claim 1 , where w+x+y+z=1 claim 1 , and 0 Подробнее

Номер записи: 32

03-10-2013 дата публикации

POLYOLEFIN-COMPOSITE HOLLOW-FIBER MEMBRANE AND MANUFACTURING METHOD FOR SAME, AND HOLLOW-FIBER MEMBRANE MODULE

Номер: US20130255498A1

Автор: Shibata Noritaka

Принадлежит: MITSUBISHI RAYON CO., LTD.

The present invention pertains to a polyolefin-composite hollow-fiber membrane and a manufacturing method for the same, said polyolefin-composite hollow-fiber membrane having: a homogenous membrane layer formed from polyolefins having a metal flow rate measured in accordance with JIS K7210 code D of 1.0 g/10 minutes, or less, and an Mw/Mn ratio of not more than 4.0; and a porous membrane layer which is formed from polyolefins having an Mw/Mn ratio of 8.0-12.0. The present invention also pertains to a hollow-fiber membrane module which is equipped with the polyolefin-composite hollow-fiber membrane. The present invention enables the provision of a polyolefin-composite hollow-fiber membrane, a manufacturing method for the same and a hollow-fiber membrane module; the polyolefin-composite hollow-fiber membrane has excellent solvent resistance and gas permeability, and when used in the deaeration of dissolved gas in a drug solution, can suppress leakage of the drug solution to a high degree, and can efficiently reduce the amount of dissolved gas. 1. A polyolefin-composite hollow-fiber membrane comprising a non-porous , homogeneous membrane layer that is permeable to gas , and a porous membrane layer supporting the homogeneous membrane layer ,wherein the homogeneous membrane layer comprises polyolefins having an Mw/Mn ratio of mass average molecular weight (Mw) and number average molecular weight (Mn), of no more than 4.0, and a melt flow rate as measured in accordance with code D of JIS K7210 (MFRD) of no more than 1.0 g/10 min.,and wherein the porous membrane layer comprises polyolefins having an Mw/Mn ratio of 8.0 to 12.0.2. The polyolefin-composite hollow-fiber membrane according to claim 1 , wherein the melt flow rate as measured in accordance with code D of JIS K7210 (MFRD) claim 1 , for the polyolefins of the homogeneous membrane layer and the polyolefins of the porous membrane layer claim 1 , are both 0.1 to 1.0 g/min.3. The polyolefin-composite hollow-fiber ...

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Номер записи: 33

03-10-2013 дата публикации

PLASMA SPRAY METHOD FOR THE MANUFACTURE OF AN ION CONDUCTING MEMBRANE AND AN ION CONDUCTING MEMBRANE

Номер: US20130255499A1

Автор: Damani Rajiv J., Gindrat Malko, Häring Jochen

Принадлежит: Sulzer Metco AG

A plasma spray method for the manufacture of an ion conducting membrane, in particular of a hydrogen ion conducting membrane or of an oxygen ion conducting membrane is suggested. In which method the membrane is deposited as a layer () on a substrate () in a process chamber, wherein a starting material (P) is sprayed onto a surface of the substrate () by means of a process gas (G) in the form of a process beam (). The starting material is injected into a plasma at a low process pressure which is at most 10000 Pa and is partially or completely melted there. In accordance with the invention the substrate () has pores () which are connected amongst one another so that the substrate () is gas permeable and a portion of an overall pore area of an overall area of the coating surface () amounts to at least 30%, in particular to at least 40%. 111111101101231131101102. A plasma spray method for the manufacture of an ion conducting membrane , in particular of a hydrogen ion conducting membrane or of an oxygen ion conducting membrane , wherein the membrane is deposited as a layer ( , ) on a substrate ( ,) in a process chamber () , wherein a starting material (P) is sprayed onto a coating surface ( , ) of the substrate ( , ) by means of a process gas (G) in the form of a process beam () , wherein the starting material is injected into a plasma at a low process pressure which is at most 10000 Pa and is partially or completely melted there ,characterized in that{'b': 10', '110', '30', '10', '110', '31', '131, 'the substrate (, ) has pores () which are connected amongst one another so that the substrate (, ) is gas permeable and a portion of an overall pore area of an overall area of the coating surface (, ) amounts to at least 30%, in particular to at least 40%.'}2. A plasma spray method in accordance with claim 1 ,characterized in that{'b': '30', 'the pores () have a mean pore size of at least 1 micrometer.'}3. A plasma spray method in accordance with claim 1 ,characterized in ...

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Номер записи: 34

10-10-2013 дата публикации

SEPARATOR

Номер: US20130264268A1

Автор: SHIMODAIRA Shigetaka, YAGI Hiroshi, YOSHIOKA Satomi

Принадлежит:

A separator fractionates a dispersion of cells including cells having phagocytic activity corresponding to a size of the cells to obtain a dispersion in which the content of the cells having phagocytic activity is higher than that of the dispersion, and includes a filter, at least part of the filter having a hydrophilic surface as a result of being covered with at least one of a self-assembled monolayer that includes an alkanethiol having a nonionic hydrophilic group that is formed on a gold thin film via a sulfur-gold bond, and a homopolymer or a copolymer of an ester of (meth)acrylic acid and at least some of hydrophilic groups of phospholipids that form a biomembrane. The separator is thus configured so that clogging of the filter is suppressed, and the separation efficiency is improved. 1. A separator that fractionates a dispersion of cells including cells having phagocytic activity corresponding to a size of the cells to obtain a dispersion in which a content of the cells having phagocytic activity is higher than that of the dispersion , the separator comprising:a filter,at least part of the filter having a hydrophilic surface as a result of being covered with at least one of a self-assembled monolayer that includes an alkanethiol having a nonionic hydrophilic group that is formed on a gold thin film via a sulfur-gold bond, and a homopolymer or a copolymer of an ester of (meth)acrylic acid and at least some of hydrophilic groups of phospholipids that form a biomembrane.2. The separator as defined in claim 1 ,the nonionic hydrophilic group being a polyethylene glycol group.3. The separator as defined in claim 1 ,the phospholipids that form the biomembrane being glycerophospholipids.4. The separator as defined in claim 3 , the ester of (meth)acrylic acid and at least some of the hydrophilic groups of the phospholipids that form the biomembrane being 2-(meth)acryloyloxyethylphosphorylcholine.5. The separator as defined in claim 1 ,the cells having phagocytic ...

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Номер записи: 35

10-10-2013 дата публикации

GRAFTED MEMBRANES AND SUBSTRATES HAVING SURFACES WITH SWITCHABLE SUPEROLEOPHILICITY AND SUPEROLEOPHOBICITY AND APPLICATIONS THEREOF

Номер: US20130264287A1

Автор: WANG Peng, Zhang Lianbin

Принадлежит:

Disclosed herein are surface-modified membranes and other surface-modified substrates exhibiting switchable oleophobicity and oleophilicity in aqueous media. These membranes and substrates may be used for variety of applications, including controllable oil/water separation processes, oil spill cleanup, and oil/water purification. Also provided are the making and processing of such surface-modified membranes and other surface-modified substrates. 1. A surface-modified material comprising a substrate covalently bonded to a polymer , wherein the surface of the surface-modified material is oleophilic and/or hydrophobic at a first condition and oleophobic and/or hydrophilic at a second condition , and wherein the polymer comprises a wettability-responsive polymer , polymer segment or polymer block comprising poly(N-isopropylacrylamide) , polyacrylamide , polypyrrole , polythiophene , polyaniline , poly(2-vinylpyridine) , poly(4-vinylpyridine) , poly(acrylic acid) , poly(methylacrylic acid) , poly(2-(diethylamino)ethylmethacrylate , poly(spiropyran methacrylate) , poly(methacryloyl ethylene phosphate) , poly[2-(methacryloyloxy)ethyl]-dimethyl(3-sulfopropyl)ammonium hydroxide , or poly[2-(methacryloyloxy)-ethyl-trimethylammonium chloride].2. The surface-modified material of claim 1 , wherein the surface-modified material is oleophilic in aqueous media at a first condition and oleophobic in aqueous media at a second condition.3. The surface-modified material of claim 1 , wherein the surface-modified material is oleophilic in air at a first condition and oleophobic in air at a second condition.4. The surface-modified material of claim 1 , wherein the substrate comprises a plurality of imbedded nanostructures.5. The surface-modified material of claim 1 , wherein the first and second conditions are selected from the group consisting of a certain temperature claim 1 , voltage claim 1 , pH claim 1 , illuminance claim 1 , pressure claim 1 , and a combination thereof.6. The ...

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Номер записи: 36

17-10-2013 дата публикации

GRAPHENE BASED FILTER

Номер: US20130270188A1

Автор: "OHern Sean C.", Atieh Muataz A., Au Harold S., Boutilier Michael S.H., Hadjiconstantinou Nicolas G., Karnik Rohit N., Laoui Tahar, Stewart Cameron A.

Принадлежит:

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. 1. A filtration membrane comprising:a porous substrate;at least one active layer disposed on the porous substrate, wherein the at least one active layer includes pores, wherein a flow resistance of the porous substrate is less than approximately ten times a flow resistance of the at least one active layer.2. The filtration membrane of claim 1 , wherein the at least one active layer comprises at least one of graphene and graphene oxide.3. The filtration membrane of claim 1 , wherein the flow resistance of the porous substrate is greater than approximately 0.0001 times the flow resistance of the at least one active layer.4. The filtration membrane of wherein the flow resistance of the porous substrate is greater than approximately 0.05 times the flow resistance of the at least one active layer.5. The filtration membrane of wherein the flow resistance of the porous substrate is less than approximately one times the flow resistance of the at least one active layer.6. The filtration membrane of wherein the pores are sized to provide selectivity relative to a desired liquid or gas.7. The filtration membrane of wherein the porous substrate comprises at least one of a polymer claim 1 , a ceramic claim 1 , and a metal.8. The filtration membrane of claim 1 , wherein the porous substrate comprises a filtration membrane.9. The filtration membrane of claim 8 , wherein the filtration membrane is selected from the group consisting of a nanofiltration membrane claim 8 , a reverse osmosis membrane claim 8 , an ultrafiltration membrane claim 8 , and a brackish ...

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Номер записи: 37

24-10-2013 дата публикации

METHODS OF MEMBRANE MODIFICATION

Номер: US20130277300A1

Автор: CHARRY PRADA Iran D., Nunes Suzana

Принадлежит: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

A porous membrane can include a nanoparticle. 1. A method of manufacturing a membrane , comprising:forming the membrane from the dissolved polymer in the presence of a functionalizing agent; andexposing the functionalizing agent to a nanoparticle to form a modified membrane.234. The method of claim 1 , wherein forming the membrane includes casting the membrane.3. The method of claim 1 , further comprising dissolving the polymer in an organic solvent.4. The method of claim 1 , wherein forming the membrane includes phase inversion.5. The method of claim 1 , wherein the nanoparticle includes functional groups.6. The method of claim 1 , wherein the functionalizing agent includes a metal alkoxide or silane.7. The method of claim 6 , wherein the functionalizing agent is a silane.8. The method of claim 7 , wherein the silane is tetraethylorthosilicate claim 7 , silicon tetrachloride claim 7 , silanol-terminated polydimethylsiloxane claim 7 , chlorine-terminated polydimethylsiloxane claim 7 , ethoxy-terminated polydimethylsiloxane claim 7 , methoxy-terminated polydimethylsiloxane claim 7 , triethoxysilylethyl-terminated polydimethylsiloxane claim 7 , dimethylamino-terminated polydimethylsiloxane claim 7 , (3-glycidyloxypropyl)trimethoxysilane claim 7 , N1-(3-trimethoxysilylpropyl)diethylenetriamine claim 7 , or a Z-terminated alkoxy or halo silane in which Z is a moiety that is compatible with claim 7 , soluble within claim 7 , or reacts with a nanoparticle or a functional group on the nanoparticle.9. The method of claim 8 , wherein Z is hydroxy claim 8 , sulfhydryl claim 8 , sulfinate claim 8 , sulfinic acid claim 8 , epoxy claim 8 , sulfonate claim 8 , sulfonic acid claim 8 , disulphide claim 8 , carboxyl claim 8 , carboxylate claim 8 , amine claim 8 , amide claim 8 , alkoxysilyl claim 8 , halosilyl claim 8 , phosphate claim 8 , phosphonic acid claim 8 , phosphonate ester claim 8 , phosphinate claim 8 , phosphinic acid claim 8 , or phosphinate ester.10. The method of ...

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Номер записи: 38

31-10-2013 дата публикации

COMPOSITION FOR FORMATION OF CARBON DIOXIDE SEPARATION MEMBRANE, CARBON DIOXIDE SEPARATION MEMBRANE AND PROCESS FOR PRODUCTION THEREOF, AND CARBON DIOXIDE SEPARATION APPARATUS

Номер: US20130284022A1

Автор: HIRAKI Daisuke, MOCHIZUKI Yusuke, YAMAZAKI Kazuki

Принадлежит:

A composition for forming a carbon dioxide separation membrane, which includes a water-absorbing polymer, a carbon dioxide carrier, and a polysaccharide, is disclosed. 1. A composition for forming a carbon dioxide separation membrane , the composition comprising a water-absorbing polymer , a carbon dioxide carrier , and a polysaccharide.2. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein a viscosity of the composition claim 1 , when measured in accordance with JIS Z8803 using a B type viscometer while cooling the surroundings of a container having the composition contained therein with 0° C. ice water claim 1 , reaches 1000 cp or higher within 700 seconds claim 1 , after the initiation of cooling.3. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein the polysaccharide is agar.4. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein a content of the polysaccharide is 10% by mass or less claim 1 , with respect to the composition.5. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein a content of the polysaccharide is from 0.3% by mass to 5% by mass claim 1 , with respect to the composition.6. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein the water-absorbing polymer is a polyvinyl alcohol-polyacrylic acid salt copolymer.7. The composition for forming a carbon dioxide separation membrane according to- claim 1 , wherein the carbon dioxide carrier is an alkali metal carbonate.8. The composition for forming a carbon dioxide separation membrane according to claim 1 , wherein the carbon dioxide carrier is a compound containing at least one selected from the group consisting of cesium claim 1 , rubidium claim 1 , and potassium.9. The composition for forming a carbon dioxide separation membrane according to claim 1 , further comprising an amino acid.10. ...

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Номер записи: 39

31-10-2013 дата публикации

REVERSE OSMOSIS MEMBRANE INCLUDING ULTRA-HYDROPHILIC PASSIVATION LAYER AND METHOD OF MANUFACTURING THE SAME

Номер: US20130284663A1

Автор: JEONG Seung-Pyo, LEE Phill, LEE Young Ju, SHIN Chong-Kyu, YOO Joung-Eun

Принадлежит:

A reverse osmosis separation membrane includes a porous support, a separation active layer formed on the supporting layer, and a ultra hydrophilic layer formed on the separation active layer. The ultra-hydrophilic layer includes a complex metal oxide including at least one metal element selected from the group consisting of Ti(IV), Zr(IV), Sn(IV) and Al(III), and Si, and an organic compound containing a hydrophilic group making a physical or chemical bond with Ti(IV), Zr(IV), Sn(IV) or Al(III) among the complex metal oxide. A method of manufacturing the reverse osmosis separation membrane also is provided. A reverse osmosis membrane including a single coating layer and having an improved durability, chlorine-resistance and antifouling properties may be provided. 1. A reverse osmosis separation membrane , comprising a porous support , a separation active layer formed on the supporting layer , and a ultra hydrophilic layer formed on the separation active layer ,the ultra-hydrophilic layer comprising a complex metal oxide including at least one metal element selected from the group consisting of Ti(IV), Zr(IV), Sn(IV) and Al(III), and Si; and an organic compound containing a hydrophilic group making a physical or chemical bond with Ti(IV), Zr(IV), Sn(IV) or Al(III) among the complex metal oxide.2. The reverse osmosis separation membrane of claim 1 , wherein the complex metal oxide has a meso-porous structure.3. The reverse osmosis separation membrane of claim 1 , wherein the complex metal oxide has a hollow tube type meso-porous structure.4. The reverse osmosis separation membrane of claim 1 , wherein the hollow tube type meso-porous structure includes an organic compound containing a hydrophilic group through a physical or chemical bond.6. The reverse osmosis separation membrane of claim 1 , wherein the hydrophilic group of the organic compound containing the hydrophilic compound is at least one selected from the group consisting of a sulfonate salt claim 1 , sulfuric ...

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Номер записи: 40

31-10-2013 дата публикации

COMPOSITE POLYAMIDE MEMBRANE

Номер: US20130287944A1

Автор: Jons Steven D., Koob Joseph D., Paul Mou, Qiu XiaoHua Sam, Rosenberg Steven, Roy Abhishek

Принадлежит: Dow Global Technologies LLC

A method for making a composite polyamide membrane including the steps of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a subject monomer comprising an aromatic moiety substituted with a single carboxylic acid functional group or salt thereof and a single amine-reactive functional group; and/or ii) applying such a monomer to the thin film polyamide layer. Many additional embodiments are described including applications for such membranes. 1. A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer , wherein the method comprises the step of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer , wherein the method is characterized by including at least one of the following steps:i) conducting the interfacial polymerization in the presence of a subject monomer comprising an aromatic moiety substituted with a single carboxylic acid functional group or salt thereof and a single amine-reactive functional group, andii) applying a subject monomer comprising an aromatic moiety substituted with a single carboxylic acid functional group or salt thereof and a single amine-reactive functional group to the thin film polyamide layer;wherein the amine-reactive functional group is selected from: acyl halide, anhydride, isocyanate and epoxy.2. The method of wherein the amine-reactive functional group is an acyl halide.4. The method of wherein the subject monomer is selected from at least one of: 3-carboxybenzoyl chloride and 4-carboxybenzoyl chloride.6. The method of wherein the subject monomer is selected from at ...

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Номер записи: 41

31-10-2013 дата публикации

COMPOSITE POLYAMIDE MEMBRANE

Номер: US20130287945A1

Автор: Jons Steven D., Koob Joseph D., Paul Mou, Qiu XiaoHua Sam, Rosenberg Steven, Roy Abhishek

Принадлежит: Dow Global Technologies LLC

A method for making a composite polyamide membrane comprising the steps of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof, and a single amine-reactive functional group; and ii) applying a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof, and a single amine-reactive functional group to the thin film polyamide layer. Many additional embodiments are described including applications for such membranes. 1. A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer , wherein the method comprises the step of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer , wherein the method is characterized by including at least one of the following steps:{'sub': 2', '20, 'i) conducting the interfacial polymerization in the presence of a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof and a single amine-reactive functional group; and'}{'sub': 2', '20, 'ii) applying a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof and a single amine-reactive functional group to the thin film polyamide layer.'}2. The method of wherein the amine-reactive functional group is selected from: acyl halide claim 1 , anhydride claim 1 , isocyanate and epoxy.3. The method of wherein the aliphatic monomer comprises a single carboxylic acid functional group.4. The method of wherein the aliphatic monomer is an alicyclic ...

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Номер записи: 42

21-11-2013 дата публикации

Preparation of Zeolitic Imidazolate Frameworks (ZIFs) - Polybenzimidazole Mixed-Matrix Composite and Application for Gas and Vapor Separation

Номер: US20130305920A1

Автор: Chung Tai-shung, Xiao Youchang, Yang Tingxu

Принадлежит: NATIONAL UNIVERSITY OF SINGAPORE

The present invention presents a mixed-matrix composite material comprising a continuous phase and zeolitic imidazolate framework (ZIF) particles dispersed in the continuous phase, wherein the continuous phase is polybenzimidazole (PBI), methods for making the mixed-matrix composite material, and methods for separating gas or vapor from a mixture of gases or vapors using the mixed-matrix composite material. 1. A mixed-matrix composite material comprising a continuous phase and zeolitic imidazolate framework (ZIF) particles dispersed in the continuous phase , wherein the continuous phase is polybenzimidazole.2. The mixed-matrix composite material of claim 1 , wherein the ZIF particles are formed by:a) mixing a transition metal source and an imidazolate compound in a solvent for a sufficient amount of time to allow the transition metal to link to the imidazolate compound, thereby forming a suspension comprising zeolitic imidazolate framework (ZIF) particles; andb) collecting and washing the ZIF particles formed in step a) with a solvent suitable to wet the ZIF particles.3. The mixed-matrix composite material of claim 1 , wherein the ZIF particles comprise metal building units and an imidazolate compound linking metal building units adjacent thereto.4. The mixed-matrix composite material of claim 3 , wherein the metal building units are transition metals selected from zinc (Zn) claim 3 , cobalt (Co) claim 3 , cadmium (Cd) claim 3 , indium (In) claim 3 , iron (Fe) claim 3 , copper (Cu) and combinations thereof.7. The mixed-matrix composite material of claim 6 , wherein the one or more polymers is selected from:poly-2,2′-(m-phenylene)-5,5′-bibenzimidazole;poly-2,2′-(pyridylene-3″,5″)-5,5′-bibenzimidazole;poly-2,2′-(furylene-2″,5″)-5,5′-bibenzimidazole;poly-2,2-(naphthalene-1″,6″)-5,5′-bibenzimidazole;poly-2,2′-(biphenylene-4″,4″)-5,5′-bibenzimidazole;poly-2,2′-amylene-5,5′-bibenzimidazole;poly-2,2′-octamethylene-5,5′-bibenzimidazole;poly-2,6-(m-phenylene)- ...

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Номер записи: 43

28-11-2013 дата публикации

COMPOSITE SEMIPERMEABLE MEMBRANE AND PROCESS FOR PRODUCING THE SAME

Номер: US20130313186A1

Автор: Minehara Hiroki, Nakatsuji Koji, Tomioka Hiroki

Принадлежит: Toray Industries, Inc.

Provided is a composite semipermeable membrane comprising a microporous support membrane and a separation functional layer formed thereon, wherein the separation functional layer is formed from Compound (A) in which a reactive group(s) having an ethylenically unsaturated group and a hydrolyzable group(s) are bonded directly to a silicon atom, Compound (B) having an ethylenically unsaturated group, the Compound (B) being different from said Compound (A), and Compound (C) having an ethylenically unsaturated group, the Compound (C) being different from said Compound (A) and (B), by condensation of hydrolyzable groups that the Compound (A) has and polymerization of ethylenically unsaturated groups that the Compound (A), the Compound (B), and the Compound (C) have, and the Compound (A), the Compound (B), and the Compound (C) satisfy the relationship of the following equation (I): 1. A composite semipermeable membrane comprising a microporous support membrane and a separation functional layer formed thereon , wherein the separation functional layer is formed from Compound (A) in which a reactive group(s) having an ethylenically unsaturated group and a hydrolyzable group(s) are bonded directly to a silicon atom , Compound (B) having an ethylenically unsaturated group , the Compound (B) being different from said Compound (A) , and Compound (C) having an ethylenically unsaturated group , the Compound (C) being different from said Compounds (A) and (B) , by condensation of hydrolyzable groups that the Compound (A) has and polymerization of ethylenically unsaturated groups that the Compound (A) , the Compound (B) and the Compound (C) have , and the Compound (A) , the Compound (B) and the Compound (C) satisfy the relationship of the following equation (I) regarding an Alfrey-Price Q value which is an index of copolymerizability of a monomer:{'br': None, 'i': Q', '−Q', '|+|Q', '−Q', '|=|Q', '−Q, 'sub': A', 'C', 'B', 'C', 'A', 'B, '||\u2003\u2003(I)'}{'sub': 'X', '(Qrepresents an ...

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Номер записи: 44

28-11-2013 дата публикации

METAL-ORGANIC FRAMEWORK SUPPORTED ON POROUS POLYMER

Номер: US20130313193A1

Автор: BROWN ANDREW, Jones Christopher W., Nair Sankar

Принадлежит: GEORGIA TECH RESEARCH CORPORATION

The growth of continuous MOF membranes on porous polymeric supports is reported, wherein a dip-coating procedure is used to deposit a layer of seed MOF nanocrystals on the surfaces of porous polymers, preferably in the form of hollow fibers, and polycrystalline MOF membranes are subsequently grown at temperatures as low as 65° C. from precursor solutions. The present work opens the road to inexpensive and scalable fabrication of MOF membranes for large-scale separation applications. 1. A method of preparing MOF-membrane-polymer , comprising:a) dip-coating a porous polymer with a seed solution comprising MOF nanocrystals of average size<1 micron suspended in a first solvent that can penetrate the porous polymer;b) drying the dip coated porous polymer;c) growing larger MOF crystals on the dip-coated porous polymer at less than 100° C. in a growth solution to make a MOF-membrane-polymer, the growth solution comprising MOF precursors solubilized in a second solvent; andd) rinsing and drying the MOF-membrane-polymer.2. The method of claim 1 , wherein the porous polymer is in the shape of a film claim 1 , a fiber or a hollow fiber.3. The method of claim 1 , wherein each of the first solvent and the second solvent is independently selected from the group consisting of water claim 1 , methanol claim 1 , ethanol claim 1 , propanol claim 1 , butanol claim 1 , chloroform claim 1 , toluene claim 1 , hexane claim 1 , dimethylformamide (DMF) claim 1 , and combinations thereof claim 1 , with the proviso that each of the first solvent and the second solvent does not solubilize the porous polymer.4. The method of claim 1 , wherein the MOF is a ZIF and each of the first solvent and the second solvent is an alcohol independently selected from the group consisting of methanol claim 1 , ethanol claim 1 , propanol claim 1 , butanol claim 1 , and combinations thereof claim 1 , with the proviso that each of the first solvent and second solvent does not solubilize the porous polymer.5. The ...

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Номер записи: 45

05-12-2013 дата публикации

ASYMMETRIC GAS SEPARATION MEMBRANE AND METHOD FOR SEPARATING METHANOL FROM MIXED ORGANIC VAPOR USING THE SAME

Номер: US20130319229A1

Автор: FUKUNAGA Kenji, HOSHINO Harutoshi, KANOUGI Tomonori, Takada Ryoichi, YOSHINAGA Toshimune

Принадлежит: UBE INDUSTRIES, LTD.

An asymmetric gas separation membrane made of an aromatic polyimide mainly containing repeating units having an ether bond which is heated at a temperature near a softening point (T) of the aromatic polyimide, and a method for separating methanol from a methanol-containing mixed organic vapor by allowing methanol to selectively permeate the asymmetric gas separation membrane using the membrane. 3. The asymmetric gas separation membrane according to claim 1 , wherein said asymmetric gas separation membrane is a hollow fiber membrane.4. A process for manufacturing an asymmetric gas separation membrane claim 1 , comprising heating an asymmetric gas separation membrane comprising a polyimide having repeating units represented by the general formula (1) at a temperature of Twithin the range:{'br': None, 'i': T', 'T', 'T, 'sub': s', 'tr', 's, '(−23° C.)<<(−2° C.)'}{'sub': tr', 's, 'wherein Trepresents a heating temperature and Trepresents a softening point of the polyimide.'}5. A process for separating methanol from a methanol-containing mixed organic vapor using the asymmetric gas separation membrane according to .6. A process for separating methanol from a methanol-containing mixed organic vapor claim 1 , comprising:heating a methanol-containing mixed organic solvent at a temperature of 110° C. or more and 250° C. or less and a pressure of 0 MPaG or more and 0.3 MPaG or less to generate a mixed organic vapor; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'contacting the asymmetric gas separation membrane according to with said mixed organic vapor, thereby allowing methanol vapor to selectively permeate said asymmetric gas separation membrane.'}7. The process according to claim 5 , wherein said mixed organic vapor comprises methanol and dimethyl carbonate. The present invention relates to an asymmetric gas separation membrane allowing for selective permeation of methanol from a methanol-containing mixed organic vapor. In particular, it relates to an asymmetric gas ...

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Номер записи: 46

19-12-2013 дата публикации

POLYIMIDE-BASED CARBON MOLECULAR SIEVE MEMBRANE FOR ETHYLENE/ETHANE SEPARATIONS

Номер: US20130333562A1

Автор: Koros William J., Rungta Meha, XU Liren

Принадлежит: GEORGIA TECH RESEARCH CORPORATION

Carbon molecular sieve membranes having desirable selectivity for ethylene/ethane separations are prepared from a 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride 5(6)-amino-1-(4′-aminophenyl)-1,3,3-trimethylindane 4,4-bismaleimidodiphenyl-methane (BTDA-DAPI) precursor solution that is then formed into films or hollow fibers which are pyrolyzed under vacuum or an inert atmosphere to form carbon molecular sieve membranes. Pyrolysis condition variables, including ramp rate, thermal soak time and temperature, are used to optimize the membrane's separation performance. 1. An ethane/ethylene separation membrane prepared by a process comprising dissolving an amount of 3 ,3′ ,4 ,4′-benzo-phenonetetracarboxylic acid dianhydride 5(6)-amino-1-(4′-aminophenyl)-1 ,3 ,3-trimethylindane 4 ,4-bismaleimidodiphenyl-methane in a solvent such that a solution is formed; forming asymmetric hollow fiber precursors from the solution; at least partially drying the asymmetric hollow fiber precursors with a second solvent; solvent-exchanging the asymmetric hollow fiber precursors in hexane; and at least partially pyrolyzing the asymmetric hollow fiber precursors under vacuum or in an inert atmosphere to form an asymmetric hollow fiber carbon molecular sieve membrane therefrom , the asymmetric hollow fiber carbon molecular sieve membrane having an ethylene permeance of at least 0.25 Gas Permeation Units and an ethylene/ethane selectivity of at least 6.3. ne permeance of at least 0.25 Gas Permeation Units and an ethylene/ethane selectivity of at least 6.3.2. The membrane of wherein the pyrolyzing is carried out to a temperature ranging from 500° C. to 800° C.3. The membrane of wherein the pyrolyzing is carried out to a temperature ranging from 650° C. to 700° C.4. The membrane of wherein the pyrolyzing is done according to a protocol wherein the asymmetric hollow fibers are heated first from 50° C. to 600° C. at a ramp rate of 10° C./minute; then from 600° C. to 675° C. at a ramp rate of ...

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Номер записи: 47

02-01-2014 дата публикации

Carbon Molecular Sieve Membrane (CMSM) Performance Tuning By Dual Temperature Secondary Oxygen Doping (DTSOD)

Номер: US20140000454A1

Автор: Koros William John, Singh Rachana

Принадлежит:

The various embodiments of the disclosure relate generally to carbon molecular sieve membranes (CMSM) and their associated fabrication processes, and more particularly to CMSM that maintain high gas selectivities without losing productivity. Methods for enriching a mixture of gases in one gas via the use of the CMS membranes, and gas enrichment devices using the same, are also disclosed. 1. A process for forming a carbon membrane comprising:subjecting a polymer precursor membrane to a base pyrolysis temperature (BPT) in a very low oxygen environment (VLOE); thensubjecting the polymer precursor membrane to a second temperature (SHT) step in a higher oxygen environment (HOE), wherein the second temperature is higher than the BPT2. The process of claim 1 , wherein the base pyrolysis temperature is between 400 and 500° C.3. The process of claim 1 , wherein the second treatment step comprises a temperature of greater than or equal to 500° C.4. The process of claim 1 , wherein the second treatment step comprises a temperature of greater than or equal to 525° C.5. The process of claim 1 , wherein the second treatment step comprises a temperature of greater than or equal to 550° C.6. The process of claim 1 , wherein the very low oxygen environment (VLOE) comprises less than 5 ppm oxygen.7. The process of claim 1 , wherein the very low oxygen environment (VLOE) comprises about 2 ppm or less oxygen.8. The process of claim 1 , wherein the very low oxygen environment (VLOE) comprises about 1 ppm or less oxygen.9. The process of claim 1 , wherein the higher oxygen environment comprises at least about 5 ppm oxygen.10. The process of claim 1 , wherein the higher oxygen environment comprises at least about 10 ppm oxygen.11. The process of claim 1 , wherein the higher oxygen environment comprises between about 5 ppm oxygen and about 60 ppm oxygen.12. The process of claim 1 , wherein the higher oxygen environment comprises between about 10 ppm oxygen and about 53 ppm oxygen.13. The ...

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Номер записи: 48

06-02-2014 дата публикации

Polymers, Polymer Membranes And Methods Of Producing The Same

Номер: US20140033918A1

Автор: Quay Jeffrey Raymond, Zheng Shiying

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

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. 5. The method of claim 3 , wherein thermal treatment is carried out at 350° C. to 500° C. for 15 minutes to 24 hours under vacuum or an inert atmosphere.6. The method of claim 3 , wherein the aromatic polyimide precursors comprising repeating units of Formula IV have an average molecular weight of 10 claim 3 ,000 to 400 claim 3 ,000.7. A gas separation membrane comprising a polymeric material of .8. The membrane of claim 7 , which is an asymmetric gas separation membrane.9. The membrane of claim 7 , which is a hollow fiber membrane.10. A method for separating components of a fluid claim 7 , said method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'providing a separation device comprising a polymeric material of as a separation membrane;'}feeding a feed fluid to the separation device, wherein the feed fluid comprises a mixture of a first fluid and at least one second fluid; andcollecting a product from the separation device, wherein the product contains the first fluid at a higher purity than the feed fluid.11. The method of claim 10 , wherein the feed fluid comprises a gas pair selected from the group consisting of O/N claim 10 , CO/CH claim 10 , CO/N claim 10 , H/N claim 10 , He/N claim 10 , H/CH claim 10 , He/CH claim 10 , He/H claim 10 , H/COand He/CO. The present invention relates to polymeric materials, a method for preparation of the polymeric materials, and the separation of mixtures using polymer membranes fabricated from the polymeric materials.Polymer membranes have been utilized for various separations including gas separation as well as liquid separation. Membrane-based gas separation has become an important alternative to well-established separation operations, such as cryogenic distillation, and adsorption ...

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Номер записи: 49

13-02-2014 дата публикации

VENTILATION UNIT

Номер: US20140041520A1

Автор: Daimon Atsushi, Uemura Kou, Yano Youzou

Принадлежит: NITTO DENKO CORPORATION

A ventilation unit (A) includes: a ventilation member () configured to be attached to an opening () of a housing (), the ventilation member () including a water-proof gas-permeable membrane () for covering the opening (); a sealing member () configured to seal a gap between the housing () and the ventilation member (); and an annular partition wall member (A) defining an inner space in which the ventilation member () is fitted. The partition wall member (A) is configured to keep in contact with the housing (), and blocks a clearance formed outside the sealing member () and between a peripheral portion of the ventilation member () and the housing () when the ventilation member () is attached to the opening () of the housing (). 1. A ventilation unit comprising:a ventilation member configured to be attached to an opening of a housing, the ventilation member comprising a water-proof gas-permeable membrane for covering the opening;a sealing member configured to seal a gap between the housing and the ventilation member; andan annular partition wall member defining an inner space in which the ventilation member is fitted, the partition wall member being configured to keep in contact with the housing.2. The ventilation unit according to claim 1 , whereinthe ventilation member comprises: a support supporting the water-proof gas-permeable membrane and having an inner gas channel configured to allow the water-proof gas-permeable membrane to communicate with an internal space of the housing; and a cover component covering the waterproof gas-permeable membrane and forming an outer gas channel opening radially outwardly between the cover component and the water-proof gas-permeable membrane and between the cover component and the support, andthe partition wall member comprises a main body portion held by the support radially from inside, the main body portion being configured to come into contact with the housing and to allow at least a portion of an opening of the outer gas ...

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Номер записи: 50

20-02-2014 дата публикации

Cardo-Polybenzoxazole Polymer/Copolymer Membranes For Improved Permeability And Method For Fabricating The Same

Номер: US20140047976A1

Автор: Chung Tai-Shung Neal, Wang Huan, Yeong Yin Fong

Принадлежит:

The present invention discloses a series of cardo-polybenzoxazole copolymer membranes, methods for preparing the cardo-polybenzoxazole copolymer membrane from thermal rearrangement of cardo-copolyimide membranes, and methods of methods for the separation of a fluid from a mixture of fluids by utilizing the cardo-polybenzoxazole copolymer membrane. 3. The copolymer of claim 1 , wherein the cardo-polybenzoxazole copolymer comprises units of both cardo-polybenzoxazole and polybenzoxazole.5. The copolymer of claim 1 , wherein the cardo-polybenzoxazole copolymer is in the form of a membrane having a geometry comprising flat sheet claim 1 , hollow fiber claim 1 , tube claim 1 , thin film composite claim 1 , or disk.7. The method of claim 6 , wherein the cardo-polyimide copolymer comprises units of both cardo-polyimide and polyimide.8. The method of claim 6 , wherein step (c) is performed at a temperature of from about 400° C. to about 450° C.12. The method of claim 6 , wherein the cardo-polybenzoxazole copolymer is cast into a membrane having a geometry comprising flat sheet claim 6 , hollow fiber claim 6 , tube claim 6 , thin film composite claim 6 , or disk.14. The method of claim 13 , wherein the copolymer comprises cardo-polybenzoxazole claim 13 , cardo-polybenzothiazole claim 13 , cardo-polypyrrolone claim 13 , cardo-polybenzimidazole claim 13 , polymer and co-polymers claim 13 , or the precursor materials used to prepare the thermally rearranged materials.15. The method of claim 13 , wherein the at least one fluid from a mixture of fluids is at least one gas from a mixture of gases. This application claims the benefit of U.S. Provisional Application No. 61/480,446, filed on Apr. 29, 2011. The entire teachings of the above application are incorporated herein by reference.Membrane-based technology has emerged as an economical and highly energy-efficient alternative to conventional technology in separation applications. Polymeric membranes, in particular, are ...

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Номер записи: 51

20-02-2014 дата публикации

VENTILATION UNIT

Номер: US20140047981A1

Автор: Daimon Atsushi, Uemura Kou, Yano Youzou

Принадлежит: NITTO DENKO CORPORATION

A ventilation unit () includes: a ventilation member () configured to be attached to an opening () of a housing (), the ventilation member () including a water-proof gas-permeable membrane () for covering the opening (); a sealing member () configured to seal a gap between the housing () and the ventilation member (); and a washer () configured to be pressed against the housing () by the ventilation member () around the sealing member (). The washer () blocks a clearance formed outside the sealing member () and between a peripheral portion of the ventilation member () and the housing () when the ventilation member () is attached to the opening () of the housing (). 1. A ventilation unit comprising:a ventilation member configured to be attached to an opening of a housing, the ventilation member comprising a water-proof gas-permeable membrane for covering the opening;a sealing member configured to seal a gap between the housing and the ventilation member; anda washer configured to be pressed against the housing by the ventilation member around the sealing member.2. The ventilation unit according to claim 1 , wherein the washer is formed of an elastic material.3. The ventilation unit according to claim 1 , wherein the ventilation member comprises: a support supporting the water-proof gas-permeable membrane and having an inner gas channel configured to allow the water-proof gas-permeable membrane to communicate with an internal space of the housing; and a cover component covering the water-proof gas-permeable membrane and forming an outer gas channel opening radially outwardly between the cover component and the water-proof gas-permeable membrane and between the cover component and the support.4. The ventilation unit according to claim 3 , wherein the cover component comprises: a principal wall facing the water-proof gas-permeable membrane; a plurality of hanging walls hanging downwardly from a peripheral portion of the principal wall and extending beyond the water- ...

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Номер записи: 52

20-02-2014 дата публикации

HEADER FOR FILTRATION MEMBRANE AND FILTRATION MEMBRANE MODULE COMPRISING THE SAME

Номер: US20140048472A1

Автор: Moon Heewan

Принадлежит: KOLON INDUSTRIES, INC.

Disclosed is a header which can prevent a fixing layer for fixing the filtration membrane in the header from being detached from the header and a filtration membrane module comprising the same. A filtration membrane module of the present invention comprises a filtration membrane, a header comprising a case having an opening at an upper part thereof and a partition dividing an inner space of the case into a first space for insertion of the filtration membrane and a second space for fixing the filtration membrane, and a fixing layer. The filtration membrane is potted in the fixing layer which, together with the case, forms a filtrate collecting space in the first space. The partition has a through-hole. The fixing layer exists in at least a portion of the first space, in the second space, and in the through-hole of the partition as well. 1. A header for a filtration membrane , the header comprising:a case having an opening at an upper part thereof; anda partition dividing an inner space of the case into a first space for insertion of the filtration membrane and a second space for fixing the filtration membrane,wherein the partition has a through-hole, andwherein the first and second spaces are in fluid communication with each other through the through-hole.2. The header of claim 1 , wherein the second space is disposed between at least a portion of a side wall of the case and the partition.3. The header of claim 2 , wherein the partition's height is smaller than the side wall's height.4. The header of claim 1 , wherein the case has a plurality of grooves at an inner side surface thereof claim 1 , and each of the plurality of grooves has a tapered shape getting larger toward an outer side surface of the case.5. A filtration membrane module comprising:a filtration membrane;a header comprising a case having an opening at an upper part thereof and a partition dividing an inner space of the case into a first space for insertion of the filtration membrane and a second space ...

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Номер записи: 53

27-02-2014 дата публикации

MELT PROCESSABLE POLY(VINYL ALCOHOL) BLENDS AND POLY(VINYL ALCOHOL) BASED MEMBRANES

Номер: US20140058007A1

Автор: Cruz Carlos A.

Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Technologies and implementations for providing melt processable poly(vinyl alcohol) blends and poly(vinyl alcohol) based membranes are generally disclosed. 124.-. (canceled)25. A method for producing a purification membrane , the method comprising:blending a first polymer including poly(vinyl alcohol), a second polymer including 2-glucosyloxyethyl methacrylate and a third polymer configured to provide post melt processing flexibility to a polymer blend to form a melt processable polymer blend;extruding the melt processable polymer blend;forming a membrane from the extruded melt processable polymer blend; and crosslinking at least a portion of the first polymer to form the purification membrane.26. The method of claim 25 , wherein the forming the membrane from the extruded melt processing blend comprises at least one of film blowing or casting.27. The method of claim 25 , wherein the crosslinking the first polymer comprises applying radiation.28. The method of claim 25 , wherein the crosslinking the first polymer comprises a post membrane formation treatment including applying a chemical configured to crosslink poly(vinyl alcohol).29. The method of claim 28 , wherein the chemical comprises at least one of boric acid claim 28 , glutaraldehyde claim 28 , amic acid claim 28 , maleic acid or polyacrylic acid.30. The method of claim 25 , wherein the crosslinking the first polymer comprises an in situ application of reactive components configured to crosslink the first polymer.31. The method of claim 25 , wherein the third polymer comprises at least one of a poly(vinylidene fluoride) polymer claim 25 , a rubber claim 25 , a thermoplastic elastomer claim 25 , a polyolefin polymer claim 25 , a polyethylene polymer claim 25 , a polypropylene polymer claim 25 , a nylon or a polyester.32. The method of claim 25 , wherein the second polymer comprises the 2-glucosyloxyethyl methacrylate incorporated in a linear acrylic polymer.33. The method of claim 25 , further comprising: ...

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Номер записи: 54

06-03-2014 дата публикации

METHOD OF PREPARING GAS SELECTIVE MEMBRANE USING EPOXY-FUNCTIONAL SILOXANES

Номер: US20140060324A1

Автор: Ahn Dongchan, Hrabal James S., Wong Christopher

Принадлежит: Dow Corning Corporation

The present invention relates to a membrane including a reaction product of an epoxy-functional organopolysiloxane and an amino-functional curing agent, wherein the organopolysiloxane has an average of at least two silicon-bonded epoxy-substituted organic groups per molecule and the curing agent has an average of at least two nitrogen-bonded hydrogen atoms per molecule. The invention further relates to a method of separating gas components in a feed gas mixture by use of the membrane. 1. A membrane , comprising:a reaction product of an epoxy-functional organopolysiloxane and an amino-functional curing agent;wherein the organopolysiloxane has an average of at least two silicon-bonded epoxy-substituted organic groups per molecule and the curing agent has an average of at least two nitrogen-bonded hydrogen atoms per molecule.2. The membrane of claim 1 , wherein the epoxy-functional organopolysiloxane {'br': None, 'sup': 1', '2', '3', '4', '5', '6, 'sub': 1/2', 'a', '2/2', 'b', '3/2', 'c', '4/2', 'd, '(RRRSiO)(RRSiO)(RSiO)(SiO)\u2003\u2003(I)'}, 'can be represented by the average siloxane unit formula{'sup': 1', '2', '3', '4', '5', '6, 'sub': '1-5', 'wherein R, R, R, R, R, and Rare organic groups independently selected from any optionally further substituted Corganic group, 0≦a<0.95, 0≦b<1, 0≦c<1, 0≦d<0.95, a+b+c+d=1, and the epoxy-functional organopolysiloxane has a number-average molecular weight of at least about 300.'}3. The membrane of claim 2 , wherein R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , and Rare organic groups independently selected from Cmonovalent aliphatic hydrocarbon groups claim 2 , Cmonovalent aromatic hydrocarbon groups claim 2 , and monovalent epoxy-substituted organic groups.4. The membrane of claim 1 , wherein the amino-functional curing agent is a polyoxyalkyleneamine.5. The membrane of claim 1 , wherein the membrane is free-standing.6. The membrane of claim 1 , wherein the reaction product is formed by subjecting the epoxy- ...

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Номер записи: 55

27-03-2014 дата публикации

DESALINATION TREATMENT MEMBRANE

Номер: US20140083930A1

Автор: Hasegawa Shin, MAEKAWA Yasunari, MATSUI Akihiro, SANO Kenji, Sawada Shinichi, Tsuji Hideyuki, YAMADA Arisa

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a desalination treatment membrane includes a desalting membrane and a base material which is disposed in close contact with the desalting membrane, wherein a solid salt is fixed to the base material by a graft-polymerization. 1. A desalination treatment membrane comprising a desalting membrane and a base material which is disposed in close contact with the desalting membrane , wherein a solid salt is fixed to the base material by a graft-polymerization.2. The membrane of claim 1 , wherein the solid salt is an organic salt.3. The membrane of claim 2 , wherein the organic salt is selected from the group consisting of acrylic acid salt claim 2 , methacrylic acid salt claim 2 , sulfonic acid salt and quarternary ammonium salt.4. The membrane of claim 1 , wherein a graft rate of the solid salt to the base material by the graft-polymerization is from 2% to 50%.5. The membrane of claim 1 , wherein the base material to which the solid salt is fixed by the graft-polymerization is a base material to which a graft chain of sodium polyacrylate is bonded.6. The membrane of claim 1 , wherein the base material is selected from the group consisting of cellulose claim 1 , a fabric claim 1 , and a resin membrane.7. The membrane of claim 6 , wherein the cellulose is paper. This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2012-214301, filed Sep. 27, 2012, the entire contents of which are incorporated herein by reference.Embodiments described herein relate generally to a desalination treatment membrane for desalination of salt water such as seawater.Reverse osmosis membrane (RO membrane) methods have hitherto been widely used in a desalination method of seawater. A reverse osmosis desalination method (RO method) is a method in which a pressure of about 55 atmospheres is applied to an osmosis membrane in a direction opposite to the osmotic pressure, thereby taking out fresh water from about 3.5% by weight ...

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Номер записи: 56

03-04-2014 дата публикации

PERMEATE CARRIER FABRIC FOR MEMBRANE FILTERS

Номер: US20140091030A1

Автор: Earhart Robert Charles, Hodges Monty

Принадлежит: Glen Raven, Inc.

A permeate carrier fabric includes at least some monofilament synthetic yarns to provide adequate stiffness and reduce blockage of permeate flow. 1. A permeate carrier fabric for placement between adjacent membranes of reverse osmosis , nanofiltration , ultrafiltration , or microfiltration systems , comprising:a) at least some monofilament synthetic yarn ends selected from the group consisting of polyester and nylon,b) the monofilament synthetic yarn being between 10 and 40 denier,c) whereby the monofilament synthetic yarn is warp knit to form the permeate carrier fabric having continuous passageways along the fabric for flow of fluid being filtered; andd) whereby the permeate carrier fabric is configured to support adjacent membranes while reducing the blockage of permeate flow.2. The permeate carrier fabric of in which the permeate carrier fabric is formed of substantially 100% monofilament polyester yarns.3. The permeate carrier fabric of in which the permeate carrier fabric is formed of monofilament polyester yarns and other yarns.4. The permeate carrier fabric of in which the permeate carrier fabric is formed of monofilament polyester yarns and bi-component yarns.5. The permeate carrier fabric of in which the monofilament polyester yarns are 20 denier and the bi-component yarns are 70 denier 24 filament bi-component polyester yarn ends.6. The permeate carrier fabric of claim 5 , further comprising between 20 and 70 wales per inch and between 20 and 70 courses per inch.7. The permeate carrier fabric of in which the permeate carrier fabric is a tricot knit claim 1 , formed with multifilament polyester yarns and monofilament polyester yarns claim 1 , and the monofilament polyester yarns are 20 denier.8. The permeate carrier fabric of in which the wale count is between about 20 and about 70 per inch and the course count is between about 20 and about 70 per inch.9. A composite for use in a filter of the type used for reverse osmosis claim 7 , nanofiltration claim 7 ...

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Номер записи: 57

01-01-2015 дата публикации

High free volume siloxane compositions useful as membranes

Номер: US20150000522A1

Автор: Alexandra N. LICHTOR, Dongchan Ahn, James S. HRABAL

Принадлежит: Dow Corning Corp

The present invention relates to hydrosilylation-curable silicone compositions that include an alkenyl-functional trialkylsilane compound. The present invention relates to a membrane including a cured product of the hydrosilylation-curable silicone composition. The present invention also relates to a method of making the membrane, and a method of separating components in a feed mixture using the membrane.

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Номер записи: 58

01-01-2015 дата публикации

GAS SEPARATION MEMBRANE COMPRISING CROSSLINKED THERMALLY REARRANGED POLY(BENZOXAZOLE-CO-IMIDE) AND PREPARATION METHOD THEREOF

Номер: US20150000527A1

Автор: CALLE Mariola, Lee Young Moo

Принадлежит:

Provided is a method for preparing a membrane for flue gas separation including a crosslinked thermally rearranged poly(benzoxazole-co-imide) through the transesterification crosslinking of an ortho-hydroxy polyimide copolymer and a diol compound, followed by thermal rearrangement. The membrane for flue gas separation including the crosslinked thermally rearranged poly(benzoxazole-co-imide) has excellent gas permeability and selectivity, and particularly provides gas separation quality corresponding to a level exceeding the so-called 2008 upper bound in terms of carbon dioxide/methane separation. 2. The membrane for flue gas separation comprising a crosslinked thermally rearranged poly(benzoxazole-co-imide) according to claim 1 , which has an interplanar spacing (d-spacing) of 0.62-0.67 nm.3. The membrane for flue gas separation comprising a crosslinked thermally rearranged poly(benzoxazole-co-imide) according to claim 1 , which has a density of 1.36-1.43 g/cm.4. The membrane for flue gas separation comprising a crosslinked thermally rearranged poly(benzoxazole-co-imide) according to claim 1 , which has a daverage pore diameter of 4.0 Å and a daverage pore diameter of 8.6 Å.5. A method for preparing the membrane for flue gas separation as defined in claim 1 , comprising the steps of:i) reacting an acid dianhydride, ortho-hydroxydiamine and 3,5-diaminobenzoic acid as comonomer to obtain polyamic acid solution, and subjecting the polyamic acid solution to azeotropic thermal imidization to provide an ortho-hydroxypolyimide copolymer having a carboxylic acid;ii) reacting the polyimide copolymer of step i) with a diol to obtain a monoesterified ortho-hydroxypolyimide copolymer;iii) casting a polymer solution containing the monoesterified ortho-hydroxypolyimide copolymer of step ii) dissolved in an organic solvent to form a membrane, which in turn is subjected to transesterification crosslinking to obtain a crosslinked ortho-hydroxypolyimide copolymer membrane; andiv) ...

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Номер записи: 59

07-01-2021 дата публикации

METHODS OF MAKING POROUS MEMBRANES

Номер: US20210001278A1

Автор: LAI Zhiping, THANKAMONY Roshni Lilly

Принадлежит:

Embodiments of the present disclosure describe a method of making a membrane comprising contacting one or more membrane materials, a solvent, and a non-solvent at a first temperature sufficient to form a homogenous solution; casting the homogenous solution at about the first temperature; and adjusting the temperature to a second temperature sufficient to induce phase separation of the solvent and non-solvent and form a porous membrane. 1. A method of making a membrane , comprising:contacting one or more membrane materials, a solvent, and a non-solvent at a first temperature sufficient to form a homogeneous solution;casting the homogenous solution at about the first temperature;adjusting the temperature to a second temperature sufficient to induce phase separation of the solvent and non-solvent and cause the one or more membrane materials to redistribute into the solvent; andimmersing in a coagulation bath to form a porous membrane.2. The method of claim 1 , wherein the solvent and non-solvent comprise an upper critical solution temperature system characterized by a critical solution temperature.3. The method of claim 2 , wherein the solvent and non-solvent are miscible at temperatures above the critical solution temperature and immiscible at temperatures below the critical solution temperature.4. The method of claim 2 , wherein the first temperature is a temperature above the critical solution temperature.5. The method of claim 2 , wherein the second temperature is a temperature below the critical solution temperature.6. The method of claim 1 , wherein the solvent and non-solvent form a lower critical solution temperature system characterized by a critical solution temperature.7. The method of claim 6 , wherein the solvent and non-solvent are miscible at temperatures below the critical solution temperature and immiscible at temperatures above the critical solution temperature.8. The method of claim 6 , wherein the first temperature is a temperature below the ...

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Номер записи: 60

07-01-2016 дата публикации

COMPOSITE OXYGEN TRANSPORT MEMBRANE

Номер: US20160001221A1

Автор: Lane Jonathan A., LU ZIGUI, Plonczak Pawel J.

Принадлежит:

A method is described of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (LnA)CrBOand a doped zirconia. Preferred materials are (LaSr)CrFeOfor the porous fuel oxidation layer, (LaSr)CrFeOfor the dense separation layer, and (LaSr)CrFeOfor the porous surface exchange layer. Firing the said fuel activation and separation layers in nitrogen atmosphere unexpectedly allows the separation layer to sinter into a fully densified mass. 1. A method of producing an oxygen ion composite membrane comprising:{'sub': 1-x', 'x', 'w', '1-y', 'y', '3-δ, 'forming a first layer on a porous support containing a first mixture of particles of (LnA)CrBO and doped zirconia and pore formers, where Ln is La, Y, Pr, Ce or Sm, A is Ca or Sr, B is Fe, Mn, Co, Al, Ti or combinations thereof, w is from about 0.9 to about 1.0, x is from about 0.1 to about 0.3 and y is from about 0.1 to about 0.6;'}{'sub': 1-x', 'x', 'w', '1-y', 'y', '3-δ', '1-x', 'x', 'w', '1-y', 'y', '3-δ', '1-x', 'x', 'w', '1-y', 'y', '3-δ, 'the first mixture containing the (LnA)CrBO and the doped zirconia such that when sintered, the first layer will contain the (LnA)CrBO and the doped zirconia in a first volume percentage of (LnA)CrBO of from about 30% to about 70% of the total solid mass;'}{'sub': 1-x', 'x', 'w', '1-y', 'y', '3-δ, 'forming a second layer on the first layer that contains a second mixture of particles of (LnA)CrBOand the doped zirconia and that does not contain pore formers, where Ln is La, Y, Pr, Ce or Sm, A is Ca or Sr, B is Fe, Mn, Co, Al, Ti or combinations thereof, w is from about 0.9 to about 1.0, x is from about 0.1 to about 0.3 and y is from about 0.3 to about 0.7;'}{'sub': 1-x', 'x', 'w', '1-y', 'y', '3-δ', '1-x', 'x', 'w', '1-y', 'y', '3-δ', '1-x', 'x', 'w', '1-y', 'y', '3-δ, 'the second mixture containing the ( ...

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Номер записи: 61

04-01-2018 дата публикации

Degassing, De-bubbling, and Dampening Device

Номер: US20180001265A1

Автор: Elson Leanne, HARTMANN Daniel M., Sims Carl, Steckman David

Принадлежит:

A device which includes a pulse dampener and a degasser or de-bubbler. The device includes a fluid flow path and a fluid chamber located within the device. In addition, the device includes a pulse dampening membrane for dampening pulses in the fluid as it flows through the device. The device also includes a degassing membrane for degassing the fluid as it flows through the device, and/or a de-bubbling membrane for removing gas bubbles from the fluid as it flows through the device. The degassing or de-bubbling membrane can be separate and distinct from the dampening membrane. The de-bubbling membrane can be in addition to or in place of the degassing membrane in some embodiments. 1. A device comprising:a body having a first port and a second port, wherein said body has a chamber therein in fluid communication with the first port and the second port;a dampening membrane, wherein at least a first portion of said dampening membrane defines a top portion of the chamber in said body and at least a second portion of said dampening membrane is sealingly secured to said body;a degassing or de-bubbling membrane, wherein at least a first portion of said degassing or de-bubbling membrane defines a bottom portion of the chamber in said body and at least a second portion of said degassing or de-bubbling membrane is sealingly secured to said body.2. The device according to wherein said body comprises a thermoplastic material claim 1 , a metal claim 1 , a ceramic claim 1 , or a combination thereof.3. The device according to wherein said dampening membrane comprises a material selected from the group consisting of: silicone rubber claim 1 , fluoropolymer elastomer claim 1 , perfluoroelastomer claim 1 , biocompatible materials claim 1 , polyurethane claim 1 , rubber claim 1 , neoprene claim 1 , ethylene propylene diene monomer rubber claim 1 , and combinations thereof.4. The device according to wherein said degassing or de-bubbling membrane comprises a substantially non-porous ...

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Номер записи: 62

04-01-2018 дата публикации

METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY

Номер: US20180001269A1

Автор: CHEVREL Henri, Gagliano Robert A., HASSE David J., KOSURI Madhava R., MA Canghai, SWAIDAN Raja

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex. 1. A method for producing a metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity , comprising the steps of:ejecting a bore fluid from a circular opening in a hollow fiber spinneret;preparing a spin dope composition comprising a polyimide dissolved in a solvent and transition metal cations complexed with electronegative regions of the polyimide;extruding the spin dope composition from an annular opening that surrounds the circular opening;allowing the extruded core spin dope composition to traverse an air or inert gas gap to produce a nascent hollow fiber;allowing the nascent hollow fiber to travel through a coagulation bath of a non-solvent where still-dissolved portions of the polyimide in the nascent hollow fiber are solidified via phase inversion; anddrying the solidified hollow fiber.2. The method of claim 1 , wherein the complexed cations are not substantially removed from the solidified hollow fiber by the coagulation bath.3. The method of claim 2 , further comprising the step of washing the solidified hollow fiber with a wash liquid so as to remove solvent from the solidified hollow fiber claim 2 , wherein the complexed cations are not substantially removed from the solidified hollow fiber by the wash liquid.4. The method of claim 1 , further comprising the step of washing the solidified hollow fiber with a wash liquid so as to remove solvent from the solidified hollow fiber claim 1 , wherein the ...

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Номер записи: 63

04-01-2018 дата публикации

METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY

Номер: US20180001271A1

Автор: CHEVREL Henri, Gagliano Robert A., HASSE David J., KOSURI Madhava R., MA Canghai, SWAIDAN Raja

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex. 1. A method for producing a metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity , comprising the steps of:ejecting a bore fluid from a circular opening in a hollow fiber spinneret;extruding a core spin dope composition from an annular opening that surrounds the circular opening, the core spin dope composition comprising a polyimide dissolved in a solvent;allowing the extruded core spin dope composition to traverse a gap containing a gas to produce a nascent hollow fiber;allowing the nascent hollow fiber to travel through a coagulation bath of a cations of a transition metal dissolved in a non-solvent in which still-dissolved portions of the polyimide in the nascent hollow fiber are solidified via phase inversion, wherein the cations diffuse into the solidified fiber where they complex with electronegative regions of the polyimide; anddrying the solidified hollow fiber.2. The method of claim 1 , further comprising the step of washing the solidified hollow fiber with a wash liquid so as to remove solvent from the solidified hollow fiber claim 1 , wherein the complexed cations are not substantially removed from the solidified hollow fiber by the wash liquid.3. The method of claim 1 , wherein the transition metal is selected from the group consisting of Sc claim 1 , Ti claim 1 , Va claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Zn claim 1 , Y claim 1 , Zr claim 1 , Nb ...

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Номер записи: 64

04-01-2018 дата публикации

METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY

Номер: US20180001272A1

Автор: CHEVREL Henri, Gagliano Robert A., HASSE David J., KOSURI Madhava R., MA Canghai, SWAIDAN Raja

Принадлежит:

Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex. 1. A method for producing a metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity , comprising the steps of:ejecting a bore fluid from a circular opening in a hollow fiber spinneret;preparing a spin dope composition comprising a polyimide dissolved in a solvent;extruding the spin dope composition from an annular opening that surrounds the circular opening;allowing the extruded core spin dope composition to traverse an air or inert gas gap to produce a nascent hollow fiber;allowing the nascent hollow fiber to travel through a coagulation bath of a non-solvent where still-dissolved portions of the polyimide in the nascent hollow fiber are solidified via phase inversion;washing the solidified fiber with a wash liquid to remove solvent from the solidified fiber, the wash liquid having cations of a transition metal dissolved therein, the dissolved cations diffusing into the solidified fiber and complexing with electronegative regions of the polyimide; anddrying the solidified hollow fiber.3. The method of claim 1 , wherein the transition metal is selected from the group consisting of Sc claim 1 , Ti claim 1 , Va claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Zn claim 1 , Y claim 1 , Zr claim 1 , Nb claim 1 , Mo claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Ag claim 1 , Cd claim 1 , Hf claim 1 , Ta claim 1 , W claim 1 , Re claim 1 , Os claim 1 , Ir claim 1 , Pt claim 1 ...

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Номер записи: 65

04-01-2018 дата публикации

Methods to Enhance Separation Performance of Metal-Organic Framework Membranes

Номер: US20180001275A1

Автор: JEONG Hae-Kwon, Kwon Hyuk Taek

Принадлежит: The Texas A&M University System

A method produces a metal-organic framework on a surface of another metal-organic framework. One embodiment comprises contacting the first metal-organic framework with a ligand and solvent solution; wherein the first metal-organic framework comprises a first ligand and a first metal; wherein the ligand and solvent solution comprises a second ligand that is different from the first ligand in the first metal-organic framework; and allowing the second ligand from the ligand and solvent solution to exchange with the first ligand present in the first metal-organic framework for a period of time suitable to produce the second metal-organic framework on the surface of the first metal-organic framework. 1. A method for producing a second metal-organic framework membrane on the surface of a first metal-organic framework membrane comprising:forming the first metal-organic framework membrane on a support;contacting the first metal-organic framework membrane with a metal and solvent solution, wherein the first metal-organic framework membrane comprises a first ligand and a first metal, wherein the metal and solvent solution comprises a second metal that is different from the first metal in the first metal-organic framework membrane; andallowing the second metal from the metal and solvent solution to exchange with the first metal present in the first metal-organic framework membrane for a period of time suitable to produce the second metal-organic framework membrane on the surface of the first metal-organic framework membrane, wherein the second metal-organic framework membrane comprises a second ligand and a second metal.2. The method of claim 1 , wherein the second metal in the metal and solvent solution comprises iron claim 1 , copper claim 1 , zinc claim 1 , cobalt claim 1 , aluminum claim 1 , zirconium claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , or any combinations thereof.3. The method of claim 1 , wherein the metal and solvent solution further ...

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Номер записи: 66

04-01-2018 дата публикации

ZWITTERIONIC COPOLYMERS FOR FOULING RESISTANT FILTRATION MEMBRANES

Номер: US20180001278A1

Автор: Alexiou Ayse Asatekin, Kaner Papatya, Vanucci Chiara

Принадлежит:

A graft copolymer including zwitterionic repeat units and hydrophobic repeat units, in which the zwitterionic repeat units constitute 2-60 wt % of the graft copolymer and each of the hydrophobic repeat units is characterized in that a homopolymer formed thereof is miscible with polyvinylidene fluoride, polysulfone, poly ether sulfone, polyvinyl chloride, or polyacrylonitrile, each of the hydrophobic repeat units not being a repeat unit of polyvinylidene fluoride. Also disclosed is a filtration membrane containing such a graft copolymer or a statistical copolymer that includes the same composition of repeat units as the graft copolymer. Further disclosed are methods of preparing the graft copolymer and the filtration membrane. 2. The graft copolymer of claim 1 , wherein the zwitterionic repeat units each contain independently sulfobetaine claim 1 , carboxybetaine claim 1 , phosphorylcholine claim 1 , or pyridinium alkyl sulfonate; and each of the hydrophobic repeat units claim 1 , independently claim 1 , is [—O—Ph—C(CH)—Ph—O—Ph—SO—Ph—] claim 1 , [—Ph—SO—Ph—O—Ph—Ph—O—] claim 1 , [—Ph—SO—Ph—O—Ph—SO—Ph—O—] claim 1 , [—Ph—SO—Ph—O—Ph—O—] claim 1 , or a repeat unit formed from methyl methacrylate claim 1 , N claim 1 ,N-dimethyl acrylamide claim 1 , ethyl methacrylate claim 1 , acetonyl methacrylate claim 1 , trifluoroethyl methacrylate claim 1 , acrylonitrile claim 1 , vinyl pyridine claim 1 , vinyl chloride claim 1 , styrene claim 1 , butyl acrylate claim 1 , butyl methacrylate claim 1 , cyclohexyl methacrylate claim 1 , or propyl acrylate.3. The graft copolymer of claim 2 , wherein the zwitterionic repeat units constitute 5-45% by weight of the graft copolymer and the graft copolymer has a molecular weight of 10 claim 2 ,000 to 3 claim 2 ,000 claim 2 ,000 Dalton.4. The graft copolymer of claim 3 , wherein the zwitterionic repeat units constitute 10-30% by weight of the graft copolymer and the graft copolymer has a molecular weight of 30 claim 3 ,000 to 1 claim 3 ,000 ...

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Номер записи: 67

02-01-2020 дата публикации

DRAWN SILICONE MEMBRANES

Номер: US20200001241A1

Автор: Anger Christian Tobias, Moser Barbara, Weidner Richard

Принадлежит:

The invention relates to a method for producing thin, porous membranes from crosslinkable silicone compositions (S), in which: in a first step, a mixture of the silicone compositions (S) with a pore forming agent (P) and, where appropriate, solvent (L) is formed; in a second step, the mixture is placed in a mould and the silicone composition (S) is vulcanised and any solvent (L) present is removed, producing a crosslinked membrane with pores, in a third step, the pore forming agent (P) in removed from the crosslinked membrane; and in a fourth step, the pores of the membrane are opened by stretching. The invention also relates to the membranes produced in this manner and to the use thereof for separating mixtures, in wound plasters, as packaging materials and as textile membranes. 1. A process for producing thin porous membranes from crosslinkable silicone compositions (S) , whereina first step comprises forming a mixture from the silicone compositions (S) with a pore-former (P) and optionally solvent (L),a second step comprises introducing the mixture into a mold and vulcanizing the silicone composition (S), and removing any solvent present (L), where a crosslinked membrane with pores is formed,a third step comprises removing the pore-former (P) from the crosslinked membrane, anda fourth step comprises opening the pores of the membrane by drawing.2. The process as claimed in claim 1 , wherein an addition-crosslinkable silicone composition (S) is used claim 1 , comprising(A) polyorganosiloxane containing at least two alkenyl groups per molecule and having a viscosity at 25° C. of 0.2 to 1000 Pa·s,(B) SiH-functional crosslinking agent,(C) hydrosilylation catalyst, and(I) inhibitor.3. The process as claimed in claim 2 , wherein the polyorganosiloxane (A) containing alkenyl groups has a composition of the average general formula (1){'br': None, 'sup': 1', '2, 'sub': x', 'y', '(4-x-y), 'RRSiO/2 \u2003\u2003(I)'}in which{'sup': '1', 'sub': 1', '10, 'Ris a monovalent, ...

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Номер записи: 68

02-01-2020 дата публикации

Membrane process for olefin separation

Номер: US20200001242A1

Автор: Chunqing Liu, J. Mark Houdek, Stanley J. Frey, Trung Pham

Принадлежит: UOP LLC

A process is provided to separate a hydrocarbon stream comprising a mixture of light olefins and light paraffins, the process comprising sending the hydrocarbon stream through a pretreatment unit to remove impurities selected from the group consisting of sulfur compounds, arsine, phosphine, methyl acetylene, propadiene, and acetylene to produce a treated hydrocarbon stream; vaporizing the treated hydrocarbon stream to produce a gaseous treated hydrocarbon stream; adding liquid or vapor water to the gaseous treated hydrocarbon stream; then contacting the gaseous treated hydrocarbon stream to a membrane in a membrane system comprising one or more membrane units to produce a permeate stream comprising about 96 to 99.9 wt % light olefins and a retentate stream comprising light paraffins.

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Номер записи: 69

02-01-2020 дата публикации

Membranes

Номер: US20200001246A1

Автор: Itami Yujiro, Umehara Takeshi, Vermeer Erik

Принадлежит:

A process for preparing a membrane comprising applying a composition comprising a polyimide to a gas-permeable support and irradiating the composition with UV-C light source to form a discriminating layer on the support, wherein: (i) the UV-C light source emits light having a wavelength in the range 200 to 280 nm; (ii) the irradiation is performed for a period of time in the range 0.05 to 60 seconds; and (iii) the irradiation is performed at a power intensity of at least 20 mW/cmand no more than 250 mW/cm 1. A process for preparing a membrane comprising applying a composition comprising a polyimide to a gas-permeable support and irradiating the composition with UV-C light source to form a discriminating layer on the support , wherein:(i) the UV-C light source emits light having a wavelength in the range 200 to 280 nm;(ii) the irradiation is performed for a period of time in the range 0.05 to 60 seconds; and{'sup': 2', '2, '(iii) the irradiation is performed at a power intensity of at least 20 mW/cmand no more than 250 mW/cm.'}2. A process according to wherein the support comprises a porous layer and a gutter layer present on the porous layer claim 1 , wherein the composition is applied to the gutter layer.3. A process according to wherein the gutter layer comprises dialkylsiloxane groups.4. (canceled)5. (canceled)6. A process according to which further comprises the step of applying a protective layer to the discriminating layer.7. A process according to wherein the average thickness of the discriminating layer is 20 nm to 2 μm.8. A process according to wherein the support comprises a porous layer and a gutter layer claim 1 , wherein the gutter layer has an average thickness 25 to 1200 nm and is present on the porous layer.9. A process according to wherein the porous layer has pores of average diameter 0.001 to 0.1 μm11. A process according to wherein the discriminating layer is applied to the support by curtain coating claim 1 , meniscus type dip coating claim 1 , ...

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Номер записи: 70

03-01-2019 дата публикации

MEMBRANE ASSEMBLY WITH A BONDING LAYER

Номер: US20190001275A1

Автор: Brandner Marco, HAYDN MARKUS, Hummel Stephan

Принадлежит:

A membrane assembly for the permeative separation of a fluid from fluid mixtures includes a porous, fluid-permeable, metallic support substrate, a membrane that is disposed on the support substrate and is selectively permeable to the fluid to be separated off, and a connecting part which is formed, at least on the surface, of a fluid-tight, metallic material. The support substrate is cohesively bonded along a peripheral section thereof to the connecting part. A ceramic, fluid-permeable, porous, first intermediate layer is disposed between the support substrate and the membrane. At least one ceramic bonding layer is disposed directly on the connecting part and the material bond and extends at least over the cohesive material bond and an adjoining section of the connecting part. The first intermediate layer ends on the bonding layer and has a greater average pore size than the bonding layer. 119-. (canceled)20. A membrane assembly for the permeative separation of a fluid from a fluid mixture , the membrane assembly comprisinga porous, fluid-permeable, metallic support substrate;a membrane formed on said support substrate, said membrane being selectively permeable to the fluid to be separated off from the fluid mixture;a connecting part formed, at least on a surface thereof, of a fluid-tight, metallic material, said support substrate having a peripheral section;said connecting part being connected with a cohesive material bond to said peripheral section of said support substrate;a ceramic, fluid-permeable, porous, intermediate layer disposed between said support substrate and said membrane; andat least one ceramic bonding layer disposed directly on said connecting part and on said cohesive material bond, at least along a partial segment of a total joining length of said material bond, and extending over said cohesive material bond and an adjoining section of said connecting part;said intermediate layer terminating on or at said bonding layer and said intermediate layer ...

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Номер записи: 71

03-01-2019 дата публикации

WATER-TIGHT BREATHABLE MEMBRANE

Номер: US20190001279A1

Автор: AHLERS Juergen, ARNOLD Lena, PRISSOK Frank, Scherzer Dietrich, Weber Martin

Принадлежит: BASF SE

The present invention relates to shaped bodies comprising a composition (Z1), wherein said composition comprises at least one polymer having an elongation at break of >30% and at least one porous metal-organic framework material, to processes for producing shaped bodies of this kind and to the use of a composition (Z1) comprising at least one polymer having an elongation at break of >30% and at least one porous metal-organic framework material for production of a film, membrane or laminate having a water vapor permeability according to DIN 53122 at 38° C./90% rel. humidity of greater than 1000 g/(m*d), based on a film thickness of 10 μm. 1. A shaped body , comprising a composition (Z1) , wherein said composition (Z1) comprises:(i) at least one polymer having an elongation at break of >30%, determined according to ISO 527; and(ii) at least one porous metal-organic framework material,wherein:a portion of the porous metal-organic framework material in the composition (Z1) ranges from 0.1% to 20% by weight;the porous metal-organic framework material has an average pore diameter in the range from 0.2 to 4 nm;the porous metal-organic framework material comprises zinc, magnesium or aluminum as metal; andthe polymer is selected from the group consisting of a thermoplastic polyurethane, a polyester, a polyether, a polyetherester, a polyketone, a polyethersulfone, a polysulfone, a polyetherimide, a polyamide and a polyolefin.24-. (canceled)5. The shaped body according to claim 1 , wherein the shaped body is a film claim 1 , membrane or laminate.6. The shaped body according to claim 1 , wherein the shaped body is a membrane.7. The shaped body according to claim 1 , wherein the shaped body is obtained by an extrusion process.8. The shaped body according to claim 5 , wherein the film claim 5 , the membrane or the laminate has a thickness in the range from 1 to 500 μm.9. The shaped body according to claim 6 , wherein the film claim 6 , the membrane or the laminate has a thickness ...

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Номер записи: 72

03-01-2019 дата публикации

Grafted Islands-In-The-Sea Nonwoven For High Capacity Ion Exchange Bioseparation

Номер: US20190001281A1

Автор: CARBONELL RUBEN G., Heller Michael Leonard, Pourdeyhimi Behnam

Принадлежит:

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided. 1. A polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes , comprising a nonwoven web comprising a plurality of polyester fibers having an average fiber diameter of less than about 1.5 microns , each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer , each polymer segment carrying a functional group adapted for binding to a target molecule.2. The nonwoven membrane of claim 1 , wherein the methacrylate polymer is constructed from one or more monomers selected from the group consisting of glycidyl methacrylate claim 1 , methacrylic acid claim 1 , 2-(diethylamino)ethyl methacrylate claim 1 , [2-(methacryloyloxy)ethyl]trimethyl-ammonium chloride claim 1 , 2-hydroxyethyl methacrylate claim 1 , 2-acrylamido-2-methylpropane sulfonic acid claim 1 , 2-(dimethylamino)ethyl methacrylate claim 1 , butyl methacrylate claim 1 , 3-chloro-2-hydroxypropyl methacrylate claim 1 , 2-ethylhexyl methacrylate claim 1 , and combinations thereof.3. The nonwoven membrane of claim 1 , wherein the ...

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Номер записи: 73

05-01-2017 дата публикации

MODIFIED ELASTOMER SURFACE

Номер: US20170002159A1

Автор: Ahn Dongchan, Hrabal James S, Wongg Chirstopher L

Принадлежит:

Various embodiments disclosed related to modified elastomer surfaces and methods of making and using the same. In various embodiments, the present invention provides a method of modifying the surface of an elastomer. The method can include contacting a polymerizable composition and at least part of a surface of an elastomer. The polymerizable composition can include a free-radical polymerizable monomers, an organoborane-organonitrogen free-radical initiator, and an amine-reactive compound. The method can include at least partially polymerizing the polymerizable composition, to provide a polymerization product of the polymerizable composition on the surface of the elastomer. 1. A method of modifying the surface of an elastomer , the method comprising: A) free-radical polymerizable monomer;', 'B) organoborane-organonitrogen free-radical initiator; and', 'C) amine-reactive compound;, 'contacting a polymerizable composition and at least part of a surface of an elastomer comprising an organopolysiloxane, the polymerizable composition comprising'}at least partially polymerizing the polymerizable composition, to provide a polymerization product of the polymerizable composition on the surface of the elastomer.2. The method of claim 1 , further comprising:applying a strain to the elastomer such that the elastomer is in a state of mechanical deformation during at least part of the polymerization, wherein the polymerization product of the polymerizable composition comprises a pattern.3. The method of wherein the strain is applied to the elastomer at least one of before the contacting with the composition claim 1 , during the contacting with the composition claim 1 , after the contacting with the composition claim 1 , before the at least partial polymerization claim 1 , and during the at least partial polymerization.4. The method of claim 1 , wherein the pattern comprises a mold-free pattern.5. The method of claim 1 , wherein the pattern comprises a discrete pattern comprising ...

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Номер записи: 74

03-01-2019 дата публикации

Deterministic Stepping of Polymers Through a Nanopore

Номер: US20190004029A1

Автор: Branton Daniel, Fleming Stephen Jordan, Golovchenko Jene A.

Принадлежит: President and Fellows of Harvard College

In a method p for controlling translocation of a target polymer molecule through a nanopore, a clamp is reversibly bound to a sequential plurality of polymer subunits along the target polymer molecule length and the molecule and clamp are disposed in an ionic solution that is in fluidic communication with the nanopore. A constant translocation force is applied across the nanopore to induce travel of the target polymer molecule into the nanopore, until the clamp abuts the nanopore aperture and stops further travel of the target polymer molecule into the nanopore. Then a voltage control pulse is applied across the nanopore and/or a thermal control pulse is applied at the nanopore, with a pulse duration that steps the clamp along the target polymer molecule by no more than one polymer subunit in a direction opposite that of travel into the nanopore. No fuel is provided to the clamp. 1. A method for controlling translocation of a target polymer molecule through a nanopore , the target polymer molecule including a sequential plurality of polymer subunits along a target polymer molecule length , comprising:reversibly binding a clamp to a plurality of sequential polymer subunits along the target polymer molecule length;disposing the target polymer molecule and reversibly bound clamp in an ionic solution that is in fluidic communication with the nanopore, the nanopore having an aperture diameter less than an outer diameter of the clamp;applying a constant translocation force across the nanopore to induce travel of the target polymer molecule in the ionic solution into the nanopore until the clamp on the target polymer molecule abuts the nanopore aperture and stops further travel of the target polymer molecule into the nanopore;applying a control pulse comprising at least one of a voltage control pulse across the nanopore and a thermal control pulse at the nanopore, the control pulse having a control pulse duration that steps the clamp along the target polymer molecule by no ...

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Номер записи: 75

08-01-2015 дата публикации

Hydrophobic or Oleophobic Microporous Polymer Membrane with Structurally Induced Beading Effect

Номер: US20150007721A1

Автор: Schleuss Tobias, Wünn Eberhard

Принадлежит: SARTORIUS STEDIM BIOTECH GMBH

The present invention relates to a hydrophobic or oleophobic microporous polymer membrane having a structurally induced drip-off effect, to methods for producing the membrane according to the invention, to the use of the membrane in the sterile filtration of gaseous fluids, and to the use of the membrane as a liquid barrier in liquid-containing systems to be vented. 1. A hydrophobic or oleophobic microporous polymer membrane having a structurally induced drip-off effect , wherein at least one main surface of the polymer membrane is roughened and has a contact angle with respect to water of at least 125°.2. The polymer membrane as claimed in claim 1 , wherein the polymer membrane has a pore size of from 0.1 μm to 20 μm.3. The polymer membrane as claimed in claim 1 , wherein both main surfaces of the polymer membrane are roughened and have the same surface roughness.4. The polymer membrane as claimed in claim 1 , wherein both main surfaces of the polymer membrane are roughened and have a differing surface roughness.5. The polymer membrane as claimed in claim 1 , wherein at least one roughened main surface of the polymer membrane has a surface roughness at a height of from 0.1 μm to 20 μm.6. The polymer membrane as claimed in claim 1 , wherein the polymer membrane is radiation-resistant up to 50 kGy.7. The polymer membrane as claimed in claim 1 , wherein the polymer membrane has a symmetric or asymmetric sponge structure.8. The polymer membrane as claimed in claim 1 , wherein the polymer membrane has an hourglass structure or funnel structure.9. The polymer membrane as claimed in claim 1 , wherein the roughness of the at least one roughened main surface of the polymer membrane is generated by mechanical claim 1 , physical and/or chemical posttreatment of a hydrophobic/oleophobic starting polymer membrane.10. The polymer membrane as claimed in claim 1 , wherein the roughness of the at least one roughened main surface of the polymer membrane is achieved in the ...

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Номер записи: 76

08-01-2015 дата публикации

HOLLOW FIBER TYPE SEMIPERMEABLE MEMBRANE, METHOD FOR MANUFACTURING THE SAME, MODULE, AND WATER TREATMENT METHOD

Номер: US20150008185A1

Автор: Shimizu Michiko, Tokimi Shinobu, Yagi Toshiyuki

Принадлежит: TOYOBO CO., LTD.

A hollow fiber type semipermeable membrane which achieves both water permeability and selectivity in high level and performs efficient treatment using small membrane area utilizing the concentration difference from high concentration liquid having high osmotic pressure. The hollow fiber type semipermeable membrane is characterized in that, when an aqueous solution of 25° C. having NaCl concentration of 35 g/L and pressure of 1.0 MPa is flown into an outer side of the hollow fiber type semipermeable membrane having length of about 70 cm while freshwater of 25° C. having NaCl concentration of 0 g/L is flown into an inner side of one open end of the hollow fiber type semipermeable membrane and discharged from another open end at 10 kPa or less, the permeation flow rate is 30 to 70 L/m/day. An inner diameter thereof is 50 to 200 μm; and the hollow ratio thereof is 24 to 42%. 1. A hollow fiber type semipermeable membrane which is characterized in that , when an aqueous solution of 25° C. having sodium chloride concentration of 35 g/L and pressure of 1.0 MPa is flown into and contacted with an outer side of the hollow fiber type semipermeable membrane having length of about 70 cm while freshwater of 25° C. having sodium chloride concentration of 0 g/L is flown into an inner side of one open end of the hollow fiber type semipermeable membrane and discharged from another open end at 10 kPa or less , the permeation flow rate is 30 to 70 L/m/day , wherein said permeation flow rate is measured under such a condition that twice of the permeation flow rate flown from the inner side to the outer side of the hollow fiber type semipermeable membrane utilizing the concentration difference as a driving force is equal to a flow rate flown into the outer side of the hollow fiber type semipermeable membrane and that the discharged flow rate from the inner side of the hollow fiber type semipermeable membrane is equal to 10% of said permeation flow rate; the hollow fiber type ...

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Номер записи: 77

14-01-2016 дата публикации

METHOD FOR PRODUCING ACID GAS SEPARATION COMPOSITE MEMBRANE, AND ACID GAS SEPARATION MEMBRANE MODULE

Номер: US20160008765A1

Автор: ABURAYA Yoshihiro

Принадлежит: FUJIFILM Corporation

Coating a hydrogel-state coating liquid containing at least a hydrophilic compound and an acid gas carrier on one surface of a hydrophobic porous body having three-dimensional network structure formed through intersecting, coupling or branching of a plurality of fibrils, and a large number of pores formed of microscopic interstices divided by the plurality of fibrils to form a facilitated transport membrane thereon. The hydrophobic porous body has an average inter-fibril distance of 0.001 μm or more and 2 μm or less inside a plane in parallel to a surface on which the acid gas separation facilitated transport membrane is formed, an average fibril length of 0.01 μm or more and 2 μm or less inside the plane, and an average inter-fibril distance of 0.001 μm or more and 2 μm or less in a direction perpendicular to the surface. 1. A method for producing an acid gas separation composite membrane provided with , on a support having a hydrophobic porous body at least on one surface , a facilitated transport membrane containing at least a hydrophilic compound and an acid gas carrier that reacts with an acid gas inside a gas to be separated , comprising;arranging of the hydrophobic porous body having three-dimensional network structure formed through intersecting, coupling or branching of a plurality of fibrils, and a large number of pores formed of microscopic interstices divided by the plurality of fibrils, in which,in the three-dimensional network structure, an average inter-fibril distance inside a plane in parallel to a surface having the facilitated transport membrane of the support is 0.001 μm or more and 2 μm or less, an average fibril length inside the plane is 0.01 μm or more and 2 μm or less, and an average inter-fibril distance in a direction perpendicular to the surface is 0.001 μm or more and 2 μm or less,preparing of a hydrogel-state coating liquid containing at least the hydrophilic compound and the acid gas carrier, andapplying of the coating liquid onto one ...

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Номер записи: 78

14-01-2016 дата публикации

ZEOLITE MEMBRANE HAVING OXYGEN EIGHT-MEMBERED RINGS, METHOD FOR MANUFACTURING ZEOLITE MEMBRANE AND METHOD FOR EVALUATING ZEOLITE MEMBRANE HAVING OXYGEN EIGHT-MEMBERED RINGS

Номер: US20160008771A1

Автор: Hagio Takeshi, Ichikawa Makiko, INUKAI Naoko, Miyahara Makoto, UCHIKAWA Tetsuya, YAJIMA Kenji

Принадлежит:

Provided is a zeolite membrane manufactured by: subjecting a porous body to heat treatment at 400° C. or more in the presence of oxygen as pretreatment, before adhering zeolite seed crystals to a surface of the porous body; storing the porous body under an environment of humidity of 30% or more for 12 hours or more after the heat treatment; and subsequently adhering the zeolite seed crystals to the porous body. The zeolite membrane having oxygen eight-membered rings, which is manufactured by subjecting the porous body to the heat treatment, provides a value that is obtained by dividing a permeance of CFby a permeance of COto be 0.015 or less, and has fewer defects. 1. A zeolite membrane having oxygen eight-membered rings , wherein a value obtained by dividing a permeance of CFby a permeance of COis 0.015 or less.2. The zeolite membrane having oxygen eight-membered rings according to claim 1 , wherein an Npermeance in a state of containing a structure directing agent is 0.001 NL/(m·min·kPa) or less.3. The zeolite membrane having oxygen eight-membered rings according to claim 1 , which is a DDR-type zeolite membrane or an AEI-type zeolite membrane.4. A method for manufacturing a zeolite membrane claim 1 , comprising:subjecting a porous body to heat treatment at 400° C. or more in the presence of oxygen as pretreatment, before adhering zeolite seed crystals to a surface of the porous body;and subsequently adhering the zeolite seed crystals to the porous body so as to manufacture the zeolite membrane.5. The method for manufacturing a zeolite membrane according to claim 4 , comprising: storing the porous body under an environment of humidity of 30% or more for 12 hours or more after the heat treatment; and subsequently adhering the zeolite seed crystals to the porous body.6. The method for manufacturing a zeolite membrane according to claim 4 , comprising removing a structure directing agent from the zeolite membrane of which Npermeance in a state of containing the ...

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Номер записи: 79

12-01-2017 дата публикации

Process for Extracting Phosgene

Номер: US20170008771A1

Автор: Carr Robert Henry, Mouazer Rabah, Zeeuw Arend-Jan

Принадлежит:

A process for extracting a phosgene compound, comprising providing a membrane extracting unit comprising at least one extracting cell that comprises at least one membrane contactor module having at least two sides, a gas side and a liquid side; letting an initial gas stream comprising a phosgene compound flow on the gas side of the membrane contactor module; and letting an extractant liquid stream, suitable for dissolving a phosgene compound, flow on the liquid side of the membrane contactor module so that the extractant liquid stream absorbs the phosgene compound from the initial gas stream and provides a second extractant liquid stream enriched with the phosgene compound. 1. A process for extracting a phosgene compound from an initial gas stream , comprising:providing a membrane contactor module comprising a membrane, which membrane has at least two sides, a gas side and a liquid side;letting flow an initial gas stream comprising a phosgene compound on the gas side of the membrane; andletting flow an extractant liquid stream, suitable for dissolving the phosgene compound, on the liquid side of the membrane contactor module so that the extractant liquid stream absorbs the phosgene compound from the initial gas stream and provides a second extractant liquid stream enriched with the phosgene compound.2. The process according to claim 1 , wherein the initial gas stream comprises the phosgene compound and a second gas compound selected from the group consisting of hydrogen chloride claim 1 , carbon monoxide claim 1 , carbon dioxide claim 1 , nitrogen and/or chlorine and any combination thereof;wherein the extractant liquid stream, has a higher solubility capability for the phosgene compound than for the second gas compound; andwherein a second gas stream depleted in the phosgene compound is provided.3. The process according to claim 1 , wherein the phosgene compound is selected from the group consisting of phosgene (COCl) claim 1 , bromochlorophosgene (COBrCl) and ...

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Номер записи: 80

12-01-2017 дата публикации

ORGANIC-INORGANIC COMPOSITE, STRUCTURAL BODY, AND METHOD FOR PRODUCING ORGANIC-INORGANIC COMPOSITE

Номер: US20170009047A1

Автор: Kinoshita Naoto, NODA Kenichi, Shibata Hiroyuki

Принадлежит: NGK Insulators, Ltd.

The organic-inorganic composite of the present invention includes an organic compound having a carbonyl group, an inorganic compound containing a metal component, and a silver component. The ratio of the number of metal atoms in the inorganic compound to the number of carbon atoms in the organic compound is from 0.04 to 1.60, and the ratio of the number of silver atoms in the silver component to the number of carbon atoms in the organic compound is from 0.07 to 0.55. The organic-inorganic composite may include, for example, an inorganic compound having a metal matrix structure containing a metal M and oxygen, an organic compound having a carbonyl group, and silver ions. The carbonyl group is bonded to a side chain Rof the organic compound and has an end group R. 1. An organic-inorganic composite comprising:an organic compound having a carbonyl group,an inorganic compound containing a metal component, anda silver component,wherein the ratio of the number of metal atoms in the inorganic compound to the number of carbon atoms in the organic compound is from 0.04 to 1.60, and the ratio of the number of silver atoms in the silver component to the number of carbon atoms in the organic compound is from 0.07 to 0.55.2. The organic-inorganic composite according to claim 1 , wherein the inorganic compound is a compound containing O and at least one selected from Si claim 1 , Ti claim 1 , Al claim 1 , and Zr.3. The organic-inorganic composite according to claim 1 , wherein the inorganic compound is a hydrolysate of a metal alkoxide.4. The organic-inorganic composite according to claim 1 , wherein the organic compound includes a carbon structure in which carbon atoms are bonded and the carbonyl group bonded to the carbon structure.5. The organic-inorganic composite according to claim 1 , wherein the organic compound is a polymer having the carbonyl group.6. The organic-inorganic composite according to claim 1 , wherein the organic-inorganic composite has the function of ...

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Номер записи: 81

27-01-2022 дата публикации

ULTRAFILTRATION/NANOFILTRATION MEMBRANE WITH TUNABLE PORE SIZE

Номер: US20220023805A1

Автор: FARNIA Farhad, Zhao Yue

Принадлежит:

An ultrafiltration/nanofiltration membrane with gas-tunable pore size is provided. This membrane comprises an active layer arranged between two porous support layers, wherein the active layer is formed of randomly arranged cellulose nanocrystals, wherein pores are defined in the active layer by the free spaces existing between the randomly arranged cellulose nanocrystals, and wherein chains of a CO-responsive polymer are grafted on the surface of the cellulose nanocrystals. There are also provided methods for filtering a feed using the membrane, for tuning the apparent pore size/MWCO/charge of the membrane, for cleaning the membrane, and for manufacturing the membrane. 1. An ultrafiltration/nanofiltration membrane with gas-tunable pore size comprising an active layer arranged on a first porous support layer ,wherein the active layer is formed of randomly arranged cellulose nanocrystals,wherein pores are defined in the active layer by the free spaces existing between the randomly arranged cellulose nanocrystals, and{'sub': '2', 'wherein chains of a CO-responsive polymer are grafted on the surface of the cellulose nanocrystals.'}2. (canceled)3. (canceled)4. The membrane of claim 1 , wherein the cellulose nanocrystals are covalently bonded to the first porous support layer.5. The membrane of claim 1 , wherein the cellulose nanocrystals are covalently bonded to each other.6. (canceled)7. (canceled)8. An ultrafiltration/nanofiltration membrane with gas-tunable pore size comprising an active layer claim 1 , wherein the active layer is formed of a porous polyether sulfone (PES) claim 1 , cellulose acetate claim 1 , Nylon claim 1 , cellulose nitrate claim 1 , or polytetrafluoroethylene (PTFE) membrane and wherein chains of CO-responsive polymer are grafted on the surface and the gates of the membrane.9. The membrane of claim 1 , wherein upon exposure of the membrane to CO claim 1 , the chains of the CO-responsive polymer either extend away from the surface of the cellulose ...

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Номер записи: 82

14-01-2021 дата публикации

METHOD AND APPARATUS BOTH FOR REMOVING CO2

Номер: US20210008491A1

Автор: FURUKAWA Shinichi, Hanai Nobuaki, Kiyohara Yasato, MIYATA Junya, Nonouchi Tamotsu, Okada Osamu, SAKURAI Masato, TERAMOTO MASAAKI

Принадлежит:

Provided is a method for removing COcomprising: supplying a gas to be processed containing CO, Nand Oto a feed side of a CO/Oselective permeation membrane within a temperature range of 15° C. to 50° C.; generating water vapor and supplying the water vapor to the CO/Oselective permeation membrane; selectively removing COfrom the gas to be processed by permeating COin the gas to be processed from the feed side to a permeate side of the COselective permeation membrane selectively to Oand Nin the gas to be processed; and using a COfacilitated transport membrane having CO/Oselectivity and CO/Nselectivity within the temperature range as the COselective permeation membrane, the COfacilitated transport membrane being configured with a hydrophilic polymer containing an amino acid and a deprotonating agent for preventing protonation of an amino group of the amino acid supported by a porous membrane, wherein a COconcentration in the gas to be processed is 3 mol % or less on a dry basis. 1. A method for removing COcomprising:{'sub': 2', '2', '2', '2, 'supplying a gas to be processed including CO, Nand Oto a feed side of a COselective permeation membrane;'}{'sub': '2', 'generating water vapor and supplying the water vapor to the COselective permeation membrane;'}{'sub': 2', '2', '2', '2', '2, 'selectively removing COfrom the gas to be processed by permeating COin the gas to be processed from the feed side to a permeate side of the COselective permeation membrane selectively to Oand Nin the gas to be processed; and'}{'sub': 2', '2', '2', '2', '2', '2', '2, 'using a COfacilitated transport membrane having CO/Oselectivity and CO/Nselectivity as the COselective permeation membrane, the COfacilitated transport membrane being configured to have a hydrophilic polymer layer containing an amino acid and a deprotonating agent for preventing protonation of an amino group of the amino acid, and a porous membrane supporting the hydrophilic polymer layer,'}{'sub': '2', 'wherein a ...

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Номер записи: 83

10-01-2019 дата публикации

PREPARATION, REGENERATION AND APPLICATION OF A CHELATING MICROFILTRATION MEMBRANE

Номер: US20190009214A1

Автор: LI Aimin, Ling Chen, Liu Fuqiang, Song Li, Zhang Yanhong, Zhao Wei, Zhu Changqing

Принадлежит: NANJING UNIVERSITY

A polyvinylidene fluoride (PVDF) casting membrane solution is shaped as a flat sheet membrane by thermally induced phase separation (TIPS), the PVDF membrane is defluorinated with an alkaline potassium permanganate solution, and then the carbon chain is extended with glycidyl methacrylate (GMA) as the graft monomer, and finally the nucleophilic substitution is carried out between melamine and GMA to produce a chelating microfiltration membrane for capturing and enriching heavy metals with high flux and high capacity. 1. A preparation method of a chelating microfiltration membrane , comprising:A. preparing a polyvinylidene fluoride flat sheet membrane: adding 70-90 parts of a solvent into a reactor, then adding 4-22 parts of pore-forming agent and 6-16 parts of polyvinylidene fluoride, then dissolving completely to form a casting membrane solution; stirring and reacting the casting membrane solution for 1-44 h in the reactor, wherein the reaction temperature is controlled at 50-100° C.; wherein the casting membrane solution, after being settled and defoamed, is shaped as a diaphragm by employing a thermally induced phase separation process; soaking the diaphragm in distilled water for 1-3 h, and finally drying to produce a polyvinylidene fluoride PVDF flat sheet membrane;B. defluorination: adding the polyvinylidene fluoride flat sheet membrane obtained in step A and a low concentration alkaline potassium permanganate solution to the reactor, wherein a mass ratio of the flat sheet membrane and the alkaline potassium permanganate solution is 1:20-1:50, with a temperature controlled at 10-100° C., performing the reaction for 1-25 h, and then washing and drying to obtain a defluorinated flat sheet membrane;C. grafting glycidyl methacrylate: adding the deflourinated flat sheet membrane step B and a solution of glycidyl methacrylate at a concentration of 0.5-5% to the reactor, wherein a mass ratio of the deflourinated flat sheet membrane and the solution is 1:20-1:50, then ...

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Номер записи: 84

09-01-2020 дата публикации

METHOD FOR MANUFACTURING ZEOLITE MEMBRANE STRUCTURE

Номер: US20200009510A1

Автор: Miyahara Makoto, Nakamura Shinji

Принадлежит: NGK Insulators, Ltd.

A method for manufacturing a zeolite membrane structure comprises an immersion step for immersing a porous substrate in a synthetic sol, and a synthesis step for hydrothermally synthesizing a zeolite membrane on a surface of the porous substrate that has been immersed in the synthesis so. When the foamability of the synthetic sol is measured by a Ross-Miles method under a condition of 25 degrees C., the foam height after elapse of 5 minutes from completion of down flow is less than or equal to 5 mm. 1. A method for manufacturing a zeolite membrane structure comprising:immersing a porous substrate in a synthetic sol; andhydrothermally synthesizing a zeolite membrane on a surface of the porous substrate that has been immersed in the synthetic sol; and whereinwhen a foamability of the synthetic sol is measured by a Ross-Miles method under a condition of 25 degrees C., a foam height after elapse of 5 minutes from completion of down flow is less than or equal to 5 mm.2. The method for manufacturing a zeolite membrane structure according to claim 1 , whereina viscosity of the synthetic sol at 20 degrees C. is greater than or equal to 1.0 mPa.s to less than or equal to 3.0 mPa.s.3. The method for manufacturing a zeolite membrane structure according to claim 1 , whereinthe synthetic sol contains at least one of a silicone defoaming agent, an ester defoaming agent, a polyether defoaming agent, and an alcohol defoaming agent, anda content ratio of the at least one defoaming agent in the synthetic sol is greater than or equal to 1 ppm less than or equal to 10000 ppm.4. The method for manufacturing a zeolite membrane structure according to claim 1 , wherein{'sup': '3', 'claim-text': {'br': None, 'sup': 3', '3, 'i': /s', '/g', 'g', 's, 'b': 20', '35, 'Immersion Rate (cm)={total pore volume (cm) os porous substrate ×weight () of porous substrate} time required for immersion () \u2003\u2003[Equation 1]'}, 'in the immersion step, a 5% cumulative pore diameter (D5) in relation to a ...

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Номер записи: 85

03-02-2022 дата публикации

CMS MEMBRANE, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF

Номер: US20220032237A1

Автор: Guillon Olivier, Ivanova Mariya E., Meulenberg Wilhelm Albert, Ngamou Patrick Tchoua

Принадлежит:

Disclosed are a CMS membrane, characterized in that it is obtainable by pyrolysis of a polyimide composed of the monomers 1-(4-aminophenyl)-1,3,3-trimethyl-2H-inden-5-amine and 5-(1,3-dioxo-2-benzofuran-5-carbonyl-2-benzofuran-1,3-dione of the following formulae: 3. The supported membrane according to claim 1 , wherein the polyimide is the one of CAS No. 62929-02-6.4. A process for preparing the supported CMS membrane according to claim 1 , comprising the following steps:i) applying a suitable precursor sol to the porous support,ii) calcining, thereby forming the mesoporous intermediate layer,iii) applying the polyimide by dip coating followed by drying,iv) pyrolysis,v) cooling to room temperature.5. The process according to claim 4 , characterized in that steps i) and ii) are each repeated once andcalcining is carried out at 500 to 700° C. in air, and/or{'sup': −5', '−7, 'the pyrolysis is carried out in vacuum at 10to 10mbar and by step-wise heating.'}6. The process according to claim 4 , characterized in that the immersion and removal during dip coating in step iii) is carried out at a speed of 5 to 15 mm/s and the immersion time is 10 to 30 s and/or that a solution of the polyimide in N-methyl-2-pyrrolidone is used.7. A use of the supported CMS membrane according to for the separation of gas mixtures or for the separation of liquid mixtures.8. The use according to claim 7 , wherein the gas mixtures are H/COor H/CHmixtures.9. The use according to for dehydration of alcohols.10. The use according to claim 9 , wherein the alcohols are methanol or ethanol.11. An apparatus for gas separation or for liquid separation claim 1 , characterized in that it comprises the supported CMS membrane according to . The present invention relates to an ultrathin defect-free carbon membrane suitable for the separation of gases as well as for the separation of liquids, a process for the preparation of this membrane, and its use for the separation of gases or liquids.Membrane technology ...

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Номер записи: 86

03-02-2022 дата публикации

GRAFTED POLYSULFONE MEMBRANES

Номер: US20220032282A1

Автор: Gjoka Alketa, Jaber Jad Ali, Ly Saksatha

Принадлежит:

A polysulfone membrane is modified so that monomers are wafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities. 113-. (canceled)14. A method of making a grafted polysulfone membrane , comprising:a) contacting the polysulfone membrane with an alcohol solution comprising benzophenone;b) contacting the polysulfone membrane with an aqueous exchange solution; i) an anionic or cationic monomer;', 'ii) sodium sulfate; and', 'iii) sodium persulfate; and, 'c) contacting the polysulfone membrane with an aqueous grafting solution comprisingd) exposing the polysulfone membrane to electromagnetic radiation, thereby resulting in a grafted polysulfone membrane.15. The method of claim 14 , wherein the anionic monomer is one or more of 2-ethylacrylic acid claim 14 , acrylic acid claim 14 , 2-carboxyethyl acrylate claim 14 , 3-sulfopropyl acrylate potassium salt claim 14 , 2-propyl acrylic acid claim 14 , 2-(trifluoromethyl)acrylic acid claim 14 , methacrylic acid claim 14 , 2-methyl-2-propene-1-sulfonic acid sodium salt claim 14 , mono-2-(methacryloyloxy)ethyl maleate claim 14 , and 3-sulfopropyl methacrylate potassium salt claim 14 , 2-acrylamido-2-methyl-1-propanesulfonic acid claim 14 , 3-methacrylamido phenyl boronic acid claim 14 , vinyl sulfonic acid claim 14 , and vinyl phosphonic acid.16. The method of claim 14 , wherein the anionic monomer is vinylsulfonic acid or vinylsulfonic acid sodium salt.17. The method of claim 14 , wherein ...

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Номер записи: 87

03-02-2022 дата публикации

PROCESS FOR PREPARING ALDEHYDES AND SEPARATION OF THE CATALYST SYSTEM BY MEMBRANE SEPARATION

Номер: US20220033337A1

Автор: BRÄCHER Alexander, Franke Robert, Fridag Dirk, GLUTH Frederik, Knossalla Johannes, Kubis Christoph, KUCMIERCZYK Peter, MARKOVIC Ana, SALE Anna Chiara, Schäpertöns Marc

Принадлежит: EVONIK OPERATIONS GMBH

The present invention provides a process for preparing aldehydes from C2 to C20 olefins using a subsequent membrane separation to separate the homogeneously dissolved catalyst system, wherein prior to the membrane separation a gas exchange that increases the partial pressure fraction of carbon monoxide or hydrogen is carried out in order to boost catalyst retention by the membrane. 1. A process for preparing aldehydes , said process comprising at least{'sub': '2', 'a hydroformylation through the reaction of C2 to C20 olefins with syngas in the presence of a homogeneously dissolved catalyst system that comprises at least Co or Rh, in at least one reaction zone, yielding a liquid reaction output containing the product, wherein the partial pressure fraction of CO or Hin the hydroformylation constitutes not more than 75% of the total gas pressure, the total gas pressure being the sum of the pressures occurring from all the gaseous substances present, and'}a membrane separation for separating the homogeneously dissolved catalyst system, wherein,{'sub': 2', '2, 'before the membrane separation, a gas exchange with CO or His carried out, as a result of which the partial pressure fraction of CO or Hconstitutes more than 80% of the total gas pressure.'}2. The process according to claim 1 , wherein the hydroformylation is carried out at a pressure of from 10 to 350 bar.3. The process according to claim 1 , wherein the hydroformylation is carried out at a temperature of from 80 to 250° C.4. The process according to claim 1 , wherein the homogeneously dissolved catalyst system comprises at least Rh and a phosphorus-containing ligand.5. The process according to claim 1 , wherein the phosphorus-containing ligand is a phosphine claim 1 , a monophosphite claim 1 , a bisphosphite or mixtures thereof.6. The process according to claim 1 , wherein the total gas pressure after the gas exchange is from 1 to 70 bar.7. The process according to claim 1 , wherein the membrane separation is ...

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Номер записи: 88

19-01-2017 дата публикации

GAS SEPARATION COMPOSITE AND METHOD OF PRODUCING SAME

Номер: US20170014754A1

Автор: HOTTA Hisashi, KASUYA Yuichi, NAGAI Takayasu

Принадлежит: FUJIFILM Corporation

The present invention provides a gas separation composite which has high heat resistance and mechanical strength, prevents a support layer from being deformed or damaged by heat during formation of a gas separation membrane and heat during a gas separation operation, and properly supports a gas separation layer to obtain high gas permeability and gas separation properties; and a method of producing the gas separation composite. The gas separation composite includes a metal support having a plurality of through holes in the thickness direction and a gas separation layer laminated on the surface of the metal support. The thickness of the gas separation layer is in a range of 0.1 to 5 μm, the average opening diameter of the through holes of the metal support is in a range of 0.1 to 30 μm, and the opening ratio thereof is in a range of 0.05% to 10%. 1. A gas separation composite comprising:a metal support which has a plurality of through holes in a thickness direction; anda gas separation layer which is laminated on a surface of the metal support,wherein a thickness of the gas separation layer is in a range of 0.1 to 5 μm,an average opening diameter of the through holes of the metal support is in a range of 0.1 to 30 μm, andan opening ratio thereof is in a range of 0.05% to 10%.2. The gas separation composite according to claim 1 ,wherein the metal support is an aluminum substrate.3. The gas separation composite according to claim 1 ,wherein the material of the gas separation layer is insoluble polyimide.4. The gas separation composite according to claim 2 ,wherein the material of the gas separation layer is insoluble polyimide.5. The gas separation composite according to any one of claim 1 ,wherein a ratio X/T of an average opening diameter X of the through holes to a thickness T of the gas separation layer is in a range of 0.02 to 100.6. The gas separation composite according to any one of claim 4 ,wherein a ratio X/T of an average opening diameter X of the through ...

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Номер записи: 89

19-01-2017 дата публикации

GRAPHENE OXIDE NANOCOMPOSITE MEMBRANE FOR GAS SEPARATION, REDUCED GRAPHENE OXIDE NANOCOMPOSITE MEMBRANE, AND METHOD FOR MANUFACTURING THE SAME

Номер: US20170014778A1

Автор: Ahn Byungkook, KIM Hyo Won, PARK Ho Bum, YOO Byung Min, YOO Myung Jin

Принадлежит: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

The present invention relates to a technology for manufacturing a nanocomposite membrane comprising a graphene oxide coating layer with a thickness of 1 nm to 50 nm, which is formed on various supports and has nanopores, and a reduced graphene oxide nanocomposite membrane, and applying the membranes to gas separation. The graphene oxide nanocomposite membrane for gas separation of the present invention has excellent gas permeability and selectivity at the same time, and especially, excellent hydrogen gas permeability and hydrogen gas selectivity compared with carbon dioxide, and the reduced graphene oxide nanocomposite membrane has remarkably enhanced hydrogen gas permeability and hydrogen gas selectivity compared with carbon dioxide, and thus the membranes are applicable as a gas separation membrane in an industrial field involving a hydrogen separation process. Furthermore, a graphene oxide nanocomposite membrane for gas separation can be provided, in which strong binding force between a support and a graphene oxide coating layer is induced by modifying surfaces of various supports and thus the graphene oxide coating layer is not easily delaminated. 1. A graphene oxide nanocomposite membrane for gas separation comprising:a support; anda graphene oxide coating layer with a thickness of 1 nm to 50 nm disposed on the support and having nanopores.2. The graphene oxide nanocomposite membrane for gas separation according to claim 1 , wherein the support is surface-doped with nitrogen and has a contact angle of 10 to 50° claim 1 , a surface roughness of 0.1 to 5.0 nm and a surface charge of −20 to +20 mV.3. The graphene oxide nanocomposite membrane for gas separation according to claim 1 , wherein the support is a porous polymer support.4. The graphene oxide nanocomposite membrane for gas separation according to claim 3 , wherein the porous polymer support is selected from the group consisting of polysulfone claim 3 , polyether sulfone claim 3 , polyimide claim 3 , ...

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Номер записи: 90

19-01-2017 дата публикации

Aerated biofilm reactor hollow fibre membrane

Номер: US20170015572A1

Автор: Eoin Casey, Eoin Syron

Принадлежит: UNIVERSITY COLLEGE DUBLIN

The present invention is concerned with a hollow fibre membrane for use in a Membrane Supported Biofilm Reactor (MSBR) or the like, the hollow fibre membrane comprising a substantially cylindrical sidewall defining an internal lumen from which gas can permeate through the sidewall, and characterised in that at least a part of an outer surface of the fibre membrane is engineered to define at least one biofilm retaining region which acts to retain a quantity of biofilm therein, in particular when the fibre membrane is subjected to a high sheer biofilm control event, such as experienced during a reactor cleaning cycle, for removing excess biofilm in order to prevent clogging of the reactor.

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Номер записи: 91

21-01-2016 дата публикации

Ceramic separation membrane structure and method for producing same

Номер: US20160016125A1

Автор: Kenji Yajima, Makiko Ichikawa, Naoko INUKAI, Tetsuya Uchikawa

Принадлежит: NGK Insulators Ltd

Provided are a ceramic separation membrane structure improved in separation performance with no reduction in permeability, and a method for producing the structure. The ceramic separation membrane structure includes a ceramic porous body 9 , a zeolite separation membrane 33 disposed on the ceramic porous body 9 , and a repair portion 34 made of a repairing material of organic-inorganic hybrid silica. The organic-inorganic hybrid silica is a combination of an organic component and a silicon-containing inorganic component.

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Номер записи: 92

17-01-2019 дата публикации

MEMBRANE AND METHOD FOR FILTERING GAS

Номер: US20190015775A1

Автор: CHI Yen-Hsun, Huang Chun-Ju, Lin Yu-Li

Принадлежит: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

A method for filtering gas includes providing a membrane, wherein the membrane includes a porous support, a hydrogen permeation layer on the porous support, and a calcinated layered double hydroxide (c-LDH) layer on the hydrogen permeation layer. The method also provides a hydrogen-containing mixture gas on the c-LDH layer, and collects hydrogen under the porous support, in which the hydrogen sequentially permeates through the c-LDH layer, the hydrogen permeation layer, and the porous support. 1. A membrane , comprising:a porous support;a hydrogen permeation layer on the porous support; anda calcinated layered double hydroxide (c-LDH) layer on the hydrogen permeation layer.2. The membrane as claimed in claim 1 , wherein the porous support comprises stainless steel claim 1 , ceramic claim 1 , or glass.3. The membrane as claimed in claim 1 , wherein the porous support has pores filled with filling particles claim 1 , the porous support has a surface modified by another c-LDH layer claim 1 , or a combination thereof.4. The membrane as claimed in claim 1 , wherein the hydrogen permeation layer comprises palladium claim 1 , silver claim 1 , copper claim 1 , gold claim 1 , nickel claim 1 , platinum claim 1 , aluminum claim 1 , gallium claim 1 , indium claim 1 , thallium claim 1 , germanium claim 1 , tin claim 1 , lead claim 1 , antimony claim 1 , bismuth claim 1 , or a combination thereof.5. The membrane as claimed in claim 1 , wherein the hydrogen permeation layer has a thickness of 1 micrometer to 100 micrometers.6. The membrane as claimed in claim 1 , wherein the layered double hydroxide has a chemical structure of [MM(OH)]A.mHO claim 1 ,{'sup': II', '2+', '2+', '2+', '2+', '2+', '2+, 'wherein Mis Mg, Zn, Fe, Ni, Co, or Cu;'}{'sup': III', '3+', '+', '3+', '3+, 'Mis Al, Cr, Fe, or Sc;'}{'sup': n−', '2−', '−', '−', '2−', '3−', '−, 'sub': 3', '3', '4', '4', '6', '4', '2, 'Ais CO, Cl, NO, SO, PO, or CH(COO); and'}x is 0.2 to 0.33.7. The membrane as claimed in claim 6 , ...

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Номер записи: 93

17-01-2019 дата публикации

POWER DISTRIBUTION SYSTEM

Номер: US20190015794A1

Автор: VAN ENDERT TONY PETRUS

Принадлежит:

The invention relates to a power distribution system (), especially a Power-over-Ethernet system, comprising at least one dominant sensor, which may be located within a powered device () like a lighting device, and at least one non-dominant sensor, which may be located within another powered device (), wherein the power distribution system is adapted such that in a system low power mode the at least one dominant sensor () consumes power provided by a power providing unit () and the at least one non-dominant sensor () does not consume the provided power and that the power distribution system () switches from the system low power mode to a system high power mode, if the at least one dominant sensor () has sensed an event. Since in the system low power mode the at least one non-dominant sensor does not consume power, the power consumption can be reduced. 1. A power distribution system comprising:a power providing unit for providing power,sensors for sensing an event,an assignment providing unit for providing assignments assigning at least one sensor to a dominant class, thereby defining at least one dominant sensor, and assigning at least one other sensor to a non-dominant class, thereby defining at least one non-dominant sensor,wherein the power distribution system is operable in a system low power mode, in which the power distribution system consumes less power, and a system high power mode, in which the power distribution system consumes more power, wherein the power distribution system is adapted such that in the system low power mode the at least one dominant sensor consumes the provided power and the at least one non-dominant sensor does not consume the provided power and that the power distribution system switches from the system low power mode to the system high power mode, if the at least one dominant sensor has sensed an event.2. The power distribution system as defined in claim 1 , wherein the sensors include a presence sensor and/or a temperature sensor and ...

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Номер записи: 94

17-01-2019 дата публикации

COMPOSITE HOLLOW FIBER MEMBRANE

Номер: US20190015796A1

Автор: Chung Tai-shung, Liang Canzeng

Принадлежит:

There is provided a composite hollow fiber membrane for gas and vapour separation comprising: a porous membrane substrate; and a selective layer of cross-linked polydimethylsiloxane (PDMS) provided on a surface of the porous membrane substrate, wherein the molecular weight of the cross-linked PDMS is ≥100 kg/mol. There is also provided a method of forming the composite hollow fiber membrane, and a method of forming the cross-linked polydimethylsiloxane (PDMS) having a molecular weight ≥100 kg/mol. 1. A composite hollow fiber membrane for gas and vapour separation comprising:a porous membrane substrate; anda selective layer of cross-linked polydimethylsiloxane (PDMS) provided on a surface of the porous membrane substrate, wherein the molecular weight of the cross-linked PDMS is ≥100 kg/mol.2. The composite hollow fiber membrane according to claim 1 , wherein the cross-linked PDMS has a concentration of ≥0.25 weight %.3. The composite hollow fiber membrane according to claim 1 , wherein the cross-linked PDMS has a thickness of ≤3 μm.4. The composite hollow fiber membrane according to claim 1 , wherein the membrane has a Opermeance of ≥10 claim 1 ,000 GPU.5. The composite hollow fiber membrane according to claim 1 , wherein the membrane has a COpermeance of ≥5 claim 1 ,000 GPU.6. The composite hollow fiber membrane according to claim 1 , wherein the membrane has a selectivity of O/Nof about 2 at a temperature of 25° C. and pressure of 2 bar.7. The composite hollow fiber membrane according to claim 1 , wherein the membrane has a selectivity of CO/Nof about 11 at a temperature of 25° C. and pressure of 2 bar.8. The composite hollow fiber membrane according to claim 1 , wherein the porous membrane substrate may comprise: polyacrylonitrile (PAN) claim 1 , polyethersulfone (PES) claim 1 , polysulfone (PSf) claim 1 , cellulose acetate (CA) claim 1 , polyvinylidene fluoride (PVDF) claim 1 , or copolymers thereof.9. A method of forming cross-linked polydimethylsiloxane (PDMS) ...

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Номер записи: 95

21-01-2021 дата публикации

Carbon dioxide separation membranes and process

Номер: US20210016231A1

Автор: Andrew Edward Feiring, Ning Shangguan, Stuart Marshall Nemser, Sudipto Majumdar

Принадлежит: Compact Membrane Systems Inc

This invention discloses a thin-film composite membrane and process for the separation of carbon dioxide from non-hydrophilic gases such as methane, hydrogen, and nitrogen. The thin-film composite membrane has a gas-separation layer and a nonporous high-diffusion-rate layer, and has carbon dioxide to non-hydrophilic gas selectivity that is greater than the intrinsic selectivity of the gas-separation layer alone.

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Номер записи: 96

17-04-2014 дата публикации

Method of Obtaining Carbon Dioxide from a Carbon Dioxide-Containing Gas Mixture

Номер: US20140102298A1

Автор: HASSE David J., JR. Edgar S., KULKARNI Sudhir S., SANDERS, Terrien Paul, Tranier Jean-Pierre

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Disclosed are methods of obtaining carbon dioxide from a CO-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures. 2. The method of claim 1 , wherein each Ris a molecular segment of formula (g) and each Rconsists of formula (D).3. The method of claim 1 , wherein each Rconsists of formula (C).4. The method of claim 1 , wherein each Ris a molecular segment of formula (a) and each Rconsists of formula (C).5. The method of claim 1 , wherein each Ris a molecular segment of formula (a) and each Rconsists of formula (D).6. The method of claim 1 , wherein Rconsists of molecular segments of formulae (a) and (c) in a 4:1 ratio and each Rconsists of formula (C).7. The method of claim 1 , wherein:{'sub': '1', 'Ris of formula (a);'}{'sub': 1', '2', '3, 'X, X, X, and Xare hydrogen; and'}{'sub': '2', 'Ris of formula (D).'}8. The method of claim 1 , wherein:{'sub': '1', 'Ris of formula (r);'}{'sub': 1', '2, 'X, X, and Xare methyl groups;'}{'sub': '2', 'Ris of formula (C); and'}Z is of formula (L).9. The method of claim 1 , wherein:{'sub': '1', 'Rconsists of molecular segments of formulae (a) and (c) in a 4:1 ratio;'}{'sub': '2', 'Ris of formula (C); and'}Z is of formula (L).10. The method of claim 1 , wherein the polymeric material is BPDA-ppODA polymerized from 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-Biphenyltetracarboxylic dianhydride and 4 claim 1 ,4′oxydianiline11. The method of claim 1 , wherein the polymeric material is BTDA-ppODA polymerized from 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-Benzophenone tetracarboxylic dianhydride and 4 claim 1 ,4′oxydianiline.12. The method of claim 1 , wherein the polymeric material is PMDA-MDA polymerized from pyromellitic dianhydride and methylene dianiline.13. The method of claim 1 , wherein the polymeric material is a polyimide polymerized from pyromellitic dianhydride and 4 claim 1 ,4′-oxydianiline.14. The method of claim 1 , wherein the polymeric material is 6FDA/BPDA+DAM polymerized ...

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Номер записи: 97

22-01-2015 дата публикации

HOLLOW FIBER MEMBRANES AND METHODS FOR FORMING SAME

Номер: US20150020685A1

Автор: Bhandari Dhaval Ajit, HOWSON Paul Edward, KOROS William, McCloskey Patrick Joseph, NARANG Kristi Jean

Принадлежит: GENERAL ELECTRIC COMPANY

The invention provides improved hollow fiber membranes having at least two layers, and methods for forming the same. The methods include co-extruding a first composition, a second composition, and a third composition to form a dual layer hollow fiber membrane. The first composition includes a glassy polymer; the second composition includes a polysiloxane; and the third composition includes a bore fluid. The dual layer hollow fiber membranes include a first layer and a second layer, the first layer being a porous layer which includes the glassy polymer of the first composition, and the second layer being a polysiloxane layer which includes the polysiloxane of the second composition. 1. A method of forming a hollow fiber membrane comprising two layers , said method comprising co-extruding a first composition , a second composition , and a third composition to form a dual layer hollow fiber membrane ,said first composition comprising a glassy polymer,said second composition comprising a polysiloxane, andsaid third composition comprising a bore fluid,wherein the dual layer hollow fiber membrane comprises a first layer and a second layer, the first layer being a porous layer comprising the glassy polymer of the first composition, and the second layer being a polysiloxane layer comprising the polysiloxane of the second composition.2. The method according to claim 1 , wherein the first layer is an inner layer claim 1 , and the second layer is an outer layer in direct contact with the inner layer; andthe polysiloxane is polydimethylsiloxane (PDMS), and the polysiloxane layer is a PDMS layer; orthe polysiloxane is a silicone-polyimide block copolymer, and the polysiloxane layer is a silicone-polyimide block copolymer layer.3. The method according to claim 2 , wherein the glassy polymer is selected from the group consisting of cellulose acetate claim 2 , polysulfones claim 2 , regenerated cellulose claim 2 , cellulose triacetate claim 2 , polyether sulfone claim 2 , ...

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Номер записи: 98

22-01-2015 дата публикации

THIN FILM COMPOSITE MEMBRANES EMBEDDED WITH MOLECULAR CAGE COMPOUNDS

Номер: US20150021262A1

Автор: Diep Jacquana T., Na Young-Hye, Sooriyakumaran Ratnam, Vora Ankit

Принадлежит:

A polymeric membrane on a support, wherein the polymeric membrane includes a crosslinked polymer covalently bound to a molecular cage compound. An interfacial polymerization method for making the polymeric membrane is also disclosed. 1. A membrane on a support , wherein the membrane comprises a crosslinked polyamide polymer , and wherein the crosslinked polyamide polymer is covalently bound to a molecular cage compound selected from the group consisting of cyclodextrin , calixarene and combinations thereof , and wherein the molecular cage compound forms a disperse phase embedded in a matrix of the crosslinked polyamide polymer.2. The membrane of claim 1 , wherein the molecular cage compound further comprises POSS.3. The membrane of claim 1 , wherein the molecular cage compound has at least one functional group selected from amine-containing moieties capable of reacting with a monomeric polyfunctional acid-halide reactant monomer to form the crosslinked polyamide polymer.5. The membrane of claim 4 , wherein at least one R group is (CH)NH.6. A method claim 4 , comprising:{'sub': n', '2', 'n', '2, 'a) dipping a support membrane into an aqueous solution, wherein the aqueous solution comprises an amine compound and a functionalized cage compound selected from the group consisting of cyclodextrin, calixarene and combinations thereof, wherein the functionalized cage compound has at least one primary amine group having the structure (L)-NH, and at least one ammonium salt having the structure (L)-NHHX, and wherein L is a linking group selected from the group consisting of alkylene, arylene, siloxy, an ether linkage, and combinations thereof, n is an integer from 0 to 10, and X is halogen;'}b) removing the support membrane from the aqueous solution; andc) dipping the support membrane into an organic solution comprising an acid halide compound, wherein the organic solution is immiscible in water.7. The method of claim 6 , wherein the aqueous solution comprises 0.01% to 0.5% by ...

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Номер записи: 99

28-01-2016 дата публикации

POLYVINYLIDENE FLUORIDE HOLLOW FIBER MEMBRANES AND PREPARATION THEREOF

Номер: US20160023170A1

Автор: CHOI Yong Ho, Kim Se Mi, Yang Ik Bae, Yoon Sung Ro

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Disclosed are polyvinylidene fluoride hollow fiber separation membranes and a preparation method thereof, and more particularly, to polyvinylidene fluoride hollow fiber separation membranes, which may be usefully used not only for water treatment, but also in the sewage treatment field, such as domestic waste water, industrial wastewater, or the like because the polyvinylidene fluoride hollow fiber separation membranes possess excellent pure water permeability and chemical resistance such as alkali resistance, etc., when applied as a separation membrane due to excellent alkali resistance while significantly improving hydrophobicity due to an amphoteric substance, which is a disadvantage of the PVDF hollow fiber separation membranes, by preparing a (PVDF) hollow fiber separation membrane with a thermosetting resin in which the amphoteric substance, in which hydrophilic groups and hydrophobic groups are constituted in the form of a covalent bond, has been introduced into a polyvinylidene fluoride (PVDF)-based resin, and a preparation method thereof. 1. A polyvinylidene fluoride hollow fiber separation membrane that consists of a thermoplastic resin , which contains from 2 to 50 parts by weight of one or more selected from polyethylene glycol-methacrylate-based and polyvinylpyrrolidone-methacrylate-based amphiphilic polymers and having a weight average molecular weight from 10 ,000 to 200 ,000 , based on 100 parts by weight of a polyvinylidene fluoride resin , and has a porous hollow fiber structure.2. The polyvinylidene fluoride hollow fiber separation membrane of claim 1 , wherein the polyvinylidene fluoride resin has a weight average molecular weight (Mw) from 50 claim 1 ,000 to 500 claim 1 ,000.3. The polyvinylidene fluoride hollow fiber separation membrane of claim 1 , wherein the polyvinylidene fluoride resin is a copolymerization polymer that contains 30 mole % or more of a vinylidene fluoride homopolymer or vinylidene fluoride.4. The polyvinylidene fluoride ...

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Номер записи: 100