DE1669590A1 - Poroese Schicht aus fibrilliertem Polytetrafluoraethylen - Google Patents

Poroese Schicht aus fibrilliertem Polytetrafluoraethylen

Info

Publication number
DE1669590A1
DE1669590A1 DE19671669590 DE1669590A DE1669590A1 DE 1669590 A1 DE1669590 A1 DE 1669590A1 DE 19671669590 DE19671669590 DE 19671669590 DE 1669590 A DE1669590 A DE 1669590A DE 1669590 A1 DE1669590 A1 DE 1669590A1
Authority
DE
Germany
Prior art keywords
film
filler
polytetrafluoroethylene
fuel cell
electron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19671669590
Other languages
English (en)
Inventor
Landi Henry Patrick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of DE1669590A1 publication Critical patent/DE1669590A1/de
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/44—Fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/08—Fibrillating cellular materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inert Electrodes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Claims (12)

Patentansprüche
1. In hohem Masse poröse, ungesinterte, im wesentlichen vollständig faserförmige oder fibrillierte Polytetrafluoräthylenfolie mit hoher Zugfestigkeit, die Füllstoffe in Mengen "bis zu 98 Gew.-$ der fertigen Folie zurückhalten kann.
2. Polytetrafluoräthylenfolie nach Anspruch 1, dadurch gekennzeichnet, dass sie mit einem Elektrolyten benetzt ist.
3. Polytetrafluoräthylenfolie nach Anspruch 1, enthaltend einen Füllstoff.
4. Folie nach Anspruch 3, in der der Füllstoff ein nichtelektronenleitender Füllstoff ist.
5. Folie nach Anspruch 3» in der der Füllstoff ein elektronenleitender Füllstoff ist.
6. Folie nach Anspruch 5, dadurch gekennzeichnet, dass ein Katalysator für eine Brennstoffzelle in die gefüllte Folie zur Bildung einer Brennstoffzellenelektrode eingebracht ist.
Vom Deutschen Patentamt
ohn© jode Gowühr herfle* 1flOftftr>/t*ftt stellte Abschrift von Unter- 1U388Z/140T lagen, d\o zur fctomeohanlechen Wlsdargaöe nfoht
Geeignet sind.
ι ^
7. Verfahren zum Herstellen einer porösen, ungesinterten, fibrillierten Polytetrafluoräthylenfolie, "bei dem PoIytetrafluoräthylenteilchen mit einem zähen, lösungsmittelextrahierbaren Harz vermischt, die Mischung in eine Folienform extrudiert und das Harz aus der Folie mit einem geeigneten Lösungsmittel entfernt werden, dadurch gekennzeichnet, dass als Ausgangsmierial eine wässrige Dispersion aus Polytetrafluoräthylenteilchen mit einer Grosse von etwa 0,05 "bis 1,0 Mikron verwendet und die Mischung vorzugsweise durch Verwalzen gemischt wird, bis die Teilchen im wesentlichen vollständig f!brilliert sind, um eine Folie mit hoher Zugfestigkeit zu bilden.
8. Verfahren nach Anspruch 7» dadurch gekennzeichnet, dass die Folie mit Alkohol gewaschen und dann mit einem Elektrolyten benetzt wird.
9. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass ein Füllstoff in die zu mischende Mischung oder in die geformte Folie eingebracht wird.
10.Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass als Füllstoff ein nichtelektronenleitender Füllstoff verwendet wird.
Vom Deuteehen Patentamt
ohne jede Gewähr hergestellte Abschrift von Unter«
lagen, dio zur fctomecha- 109882/1401 nischen Wiedergabe nioht
geeignet alnd.
11.Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass als Füllstoff ein elektronenleitender Füllstoff verwendet wird.
12.Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass ein Brennstoffzellenkatalysator in die gefüllte Folie eingebracht wird, um eine Brennstoffzellenelektrode zu bilden.
Vom Deutschen Patentamt ohne jede Gewähr herge stellte Abschrift von Unterlagsn, die zur fotomechanischen Wiedergabe nicht geeignet sind.
^ 109882/1401
INSPECTED
DE19671669590 1966-01-25 1967-01-24 Poroese Schicht aus fibrilliertem Polytetrafluoraethylen Pending DE1669590A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52296466 US3407096A (en) 1966-01-25 1966-01-25 Fuel cell and method for preparing the electrodes
US53034666 US3407249A (en) 1966-01-25 1966-02-28 Porous, extensively fibrillated polytetrafluoroethylene and method of preparing same

Publications (1)

Publication Number Publication Date
DE1669590A1 true DE1669590A1 (de) 1972-01-05

Family

ID=27060990

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671669590 Pending DE1669590A1 (de) 1966-01-25 1967-01-24 Poroese Schicht aus fibrilliertem Polytetrafluoraethylen

Country Status (9)

Country Link
US (2) US3407096A (de)
JP (1) JPS468589B1 (de)
BE (1) BE693135A (de)
CH (1) CH539089A (de)
DE (1) DE1669590A1 (de)
FR (1) FR1508823A (de)
GB (1) GB1169602A (de)
NL (1) NL6701023A (de)
SE (1) SE348142B (de)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793085A (en) * 1966-02-14 1974-02-19 Matsushita Electric Ind Co Ltd Gas diffusion electrode for cells
US3574429A (en) * 1969-06-06 1971-04-13 Lear Siegler Inc Low friction bearing and method for making same
US3661645A (en) * 1970-01-28 1972-05-09 Mc Donnell Douglas Corp Polytetrafluoroethylene battery separator and method for producing same
US3650837A (en) * 1970-04-06 1972-03-21 Leesona Corp Secondary metal/air cell
SE392582B (sv) * 1970-05-21 1977-04-04 Gore & Ass Forfarande vid framstellning av ett porost material, genom expandering och streckning av en tetrafluoretenpolymer framstelld i ett pastabildande strengsprutningsforfarande
JPS4931539B1 (de) * 1970-09-14 1974-08-22
US3935029A (en) * 1971-11-18 1976-01-27 Energy Research Corporation Method of fabricating a carbon - polytetrafluoroethylene electrode - support
BE794889A (fr) * 1972-02-04 1973-08-02 Ici Ltd Procede de fabrication d'un diaphragme poreux
JPS548193B2 (de) * 1972-06-15 1979-04-13
US3954501A (en) * 1974-01-10 1976-05-04 Guy Rampel Rechargeable electrodes utilizing unsintered fluorocarbon binder
US3898099A (en) * 1974-03-18 1975-08-05 Energy Res Corp Hydrophilic electrode and method for making the same
US4210515A (en) * 1975-02-10 1980-07-01 Basf Wyandotte Corporation Thermoplastic fibers as separator or diaphragm in electrochemical cells
US4042747A (en) * 1975-03-14 1977-08-16 Joseph A. Teti, Jr. Gasket and sealing structures of filled polytetrafluoroethylene resins
US4036729A (en) * 1975-04-10 1977-07-19 Patil Arvind S Diaphragms from discrete thermoplastic fibers requiring no bonding or cementing
GB1538810A (en) * 1976-08-10 1979-01-24 Sumitomo Electric Industries Hydrophilic porous fluorocarbon structures and process for their production
US4166785A (en) * 1976-10-29 1979-09-04 Olin Corporation Diaphragms for use in the electrolysis of alkali metal chlorides
US4167469A (en) * 1976-10-29 1979-09-11 Olin Corporation Diaphragms for use in the electrolysis of alkali metal chlorides
US4165271A (en) * 1977-10-03 1979-08-21 Olin Corporation Diaphragms for use in the electrolysis of alkali metal chlorides
US4207164A (en) * 1977-10-03 1980-06-10 Olin Corporation Diaphragms for use in the electrolysis of alkali metal chlorides
US4173662A (en) * 1977-12-23 1979-11-06 United Technologies Corporation Process for forming a fuel cell matrix
US4380521A (en) * 1978-02-13 1983-04-19 The Dow Chemical Company Method to produce a polytetra-fluoroethylene diaphragm
US4256845A (en) * 1979-02-15 1981-03-17 Glasrock Products, Inc. Porous sheets and method of manufacture
US4550123A (en) * 1979-12-28 1985-10-29 Albany International Corp. Thermally plastifiable compositions for microporous sorbent structure
US4369212A (en) * 1980-10-20 1983-01-18 Hughes Aircraft Company Process for removing residues from gas electrodes
US4339325A (en) * 1980-10-31 1982-07-13 Diamond Shamrock Corporation One pass process for forming electrode backing sheet
EP0056725A3 (de) * 1981-01-19 1982-08-11 MPD Technology Corporation Polymer-Elektrode
US4385019A (en) * 1981-01-19 1983-05-24 Mpd Technology Corporation Production of a polymeric active composition
US4493879A (en) * 1981-03-18 1985-01-15 Hitachi, Ltd. Fuel cell
US4560461A (en) * 1982-04-08 1985-12-24 Toagosei Chemical Industry Co., Ltd. Electrolytic cell for use in electrolysis of aqueous alkali metal chloride solutions
BR8305959A (pt) * 1982-10-29 1984-06-05 Chloride Group Plc Grampo para uso na montagem de baterias de armazenamento eletrico de multicelulas, processo de montagem de uma bateria de armazenamento eletrico, estrutura laminada e bateria de armazenamento eletrico
US4824528A (en) * 1985-07-19 1989-04-25 Allied-Signal Inc. Gas detection apparatus and method with novel electrolyte membrane
US5009971A (en) * 1987-03-13 1991-04-23 Ppg Industries, Inc. Gas recombinant separator
US4997603A (en) * 1988-08-05 1991-03-05 Hoechst Celanese Corp. Process for formation of halogenated polymeric microporous membranes having improved strength properties
US5043113A (en) * 1988-08-05 1991-08-27 Hoechst Celanese Corp. Process for formation of halogenated polymeric microporous membranes having improved strength properties
US4910106A (en) * 1988-08-05 1990-03-20 Hoechst Celanese Corporation Formation of halogenated polymeric microporous membranes having improved strength properties
US5141522A (en) * 1990-02-06 1992-08-25 American Cyanamid Company Composite material having absorbable and non-absorbable components for use with mammalian tissue
US5147539A (en) * 1990-02-23 1992-09-15 Minnesota Mining And Manufacturing Company Controlled pore composite polytetrafluoroethylene article
US5071610A (en) * 1990-02-23 1991-12-10 Minnesota Mining And Manufacturing Company Method of making a controlled pore composite polytetrafluoroethylene
US5207915A (en) * 1990-02-23 1993-05-04 Minnesota Mining And Manufacturing Company Separation method using controlled pore composite polytetrafluoroethylene article
US5110858A (en) * 1990-03-23 1992-05-05 E. I. Du Pont De Nemours And Company Tetrafluoroethylene polymer compositions containing particulate carbon
US5081188A (en) * 1990-03-23 1992-01-14 E. I. Du Pont De Nemours And Company Processing additives for tetrafluoroethylene polymers
US5019232A (en) * 1990-06-01 1991-05-28 Minnesota Mining And Manufacturing Company Medium for electrophoresis
DE4112248A1 (de) * 1991-04-15 1992-10-22 Basf Ag Verfahren zur herstellung offenporoeser, fasriger teile aus polytetrafluorethylen durch spritzguss oder extrusion
WO1992021715A1 (en) * 1991-06-04 1992-12-10 Donaldson Company, Inc. Fluid treated polytetrafluoroethylene products and their manufacture
US5238621A (en) * 1991-06-28 1993-08-24 Minnesota Mining And Manufacturing Company Method of controlling porosity in a composite article
US5248428A (en) * 1991-06-28 1993-09-28 Minnesota Mining And Manufacturing Company Article for separations and purifications and method of controlling porosity therein
ES2133393T3 (es) * 1992-03-13 1999-09-16 Atrium Medical Corp Productos de fluoropolimeros (por ejemplo, politetrafluoroetileno) expandidos de porosidad controlada y su fabricacion.
US5354603A (en) * 1993-01-15 1994-10-11 Minnesota Mining And Manufacturing Company Antifouling/anticorrosive composite marine structure
TW336899B (en) * 1994-01-26 1998-07-21 Mitsubishi Rayon Co Microporous membrane made of non-crystalline polymers and method of producing the same
US5766750A (en) * 1994-08-25 1998-06-16 W. L. Gore & Associates, Inc. Process for making an adhesive-filler polymer film composite
US5753358A (en) * 1994-08-25 1998-05-19 W. L. Gore & Associates, Inc. Adhisive-filler polymer film composite
US5879794A (en) * 1994-08-25 1999-03-09 W. L. Gore & Associates, Inc. Adhesive-filler film composite
US5833860A (en) * 1995-08-28 1998-11-10 Millipore Investment Holdings Limited Centrifugal adsorptive sample preparation device and method
US5904978A (en) * 1995-12-15 1999-05-18 W. L. Gore & Associates, Inc. Electrically conductive polytetrafluoroethylene article
WO1998020528A1 (en) * 1996-11-08 1998-05-14 W.L. Gore & Associates, Inc. METHOD FOR IMPROVING RELIABILITY OF THIN CIRCUIT SUBSTRATES BY INCREASING THE Tg OF THE SUBSTRATE
FR2759087B1 (fr) * 1997-02-06 1999-07-30 Electricite De France Produit composite poreux de haute surface specifique, procede de preparation et electrode pour ensemble electrochimique formee d'un film composite poreux
JP2001345106A (ja) * 2000-03-31 2001-12-14 Japan Storage Battery Co Ltd 燃料電池用電極およびその製造方法
US6770086B1 (en) * 2000-11-02 2004-08-03 Scimed Life Systems, Inc. Stent covering formed of porous polytetraflouroethylene
CA2620629A1 (en) * 2005-09-02 2007-03-08 California Institute Of Technology Method and apparatus for the mechanical actuation of valves in fluidic devices
US7862000B2 (en) * 2006-02-03 2011-01-04 California Institute Of Technology Microfluidic method and structure with an elastomeric gas-permeable gasket
US20080131327A1 (en) * 2006-09-28 2008-06-05 California Institute Of Technology System and method for interfacing with a microfluidic chip
US8071035B2 (en) * 2007-04-12 2011-12-06 Siemens Medical Solutions Usa, Inc. Microfluidic radiosynthesis system for positron emission tomography biomarkers
US9061788B2 (en) * 2007-05-04 2015-06-23 Materials & Electrochemical Research Corp. Reduced-weight container and/or tube for compressed gases and liquids
US20100093098A1 (en) * 2008-10-14 2010-04-15 Siemens Medical Solutions Nonflow-through appratus and mehod using enhanced flow mechanisms
KR101623781B1 (ko) * 2009-02-19 2016-05-24 닛폰 바루카 고교 가부시키가이샤 기능성 성형체 및 그 제조 방법
MX2011009115A (es) * 2011-08-31 2013-02-28 Mexicano Inst Petrol Aparato modular para la medicion de conductividad ionica, electronica y mixta para membranas polimericas y ceramicas.
CN103379681B (zh) * 2012-04-28 2016-03-30 清华大学 加热垫
EP3823066B1 (de) * 2018-07-10 2023-09-27 Teijin Limited Binder für wasserfreie sekundärbatterie und deren flüssige dispersion davon
CN114874485B (zh) * 2022-06-22 2023-03-10 山东大学 一种高导热聚四氟乙烯纳米纤维膜及其制造工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003912A (en) * 1954-04-27 1961-10-10 Du Pont Making paper from tetrafluoroethylene polymers
US3198667A (en) * 1961-03-31 1965-08-03 Exxon Research Engineering Co Method of impregnating porous electrode with catalyst
NL281397A (de) * 1961-07-25
US3202733A (en) * 1962-03-06 1965-08-24 Esb Reeves Corp Method of making microporous plastic
US3315020A (en) * 1962-03-21 1967-04-18 Gore & Ass Process for preparing biaxially fibrillated sheets
NL297213A (de) * 1962-08-28
DE1287051B (de) * 1962-09-07 1969-01-16 Bosch Gmbh Robert Verfahren zur Herstellung von poroesen Gasdiffusionselektroden mit Raney-Katalysatoren
US3120457A (en) * 1962-11-23 1964-02-04 Electric Storage Battery Co Method of manufacturing fuel cell and/or battery electrode
US3323978A (en) * 1963-05-09 1967-06-06 Phillips Petroleum Co Artificial textile fibres and their production
US3242246A (en) * 1963-06-14 1966-03-22 Sealectro Corp Method of preparing polytetrafluoroethylene articles
US3265557A (en) * 1964-01-09 1966-08-09 Atlantic Res Corp Fibrous compositions
US3281511A (en) * 1964-05-15 1966-10-25 Gen Plastics Corp Method of preparing microporous tetrafluoroethylene resin sheets

Also Published As

Publication number Publication date
US3407249A (en) 1968-10-22
BE693135A (de) 1967-07-25
NL6701023A (de) 1967-07-26
JPS468589B1 (de) 1971-03-04
FR1508823A (fr) 1968-01-05
SE348142B (de) 1972-08-28
GB1169602A (en) 1969-11-05
US3407096A (en) 1968-10-22
CH539089A (de) 1973-07-15

Similar Documents

Publication Publication Date Title
DE1669590A1 (de) Poroese Schicht aus fibrilliertem Polytetrafluoraethylen
DE1202136B (de) Photographisches Material mit einer aussen angeordneten, eine rauhe Oberflaeche besitzenden Schutzschicht
DE1262773B (de) Lichtempfindliche Schicht
DE2618757C3 (de) Elektrisch leitender Schichtträger
DE2717512A1 (de) Chemikalienbestaendiges diaphragma und verfahren zu seiner herstellung
DE102020211122A1 (de) Membran-Elektrodeneinheit für Brennstoffzellen mit verbesserter chemischer Beständigkeit und Protonenleitfähigkeit und Verfahren zu deren Herstellung
DE2524640A1 (de) Elektrisch leitfaehige materialien und verfahren zu ihrer herstellung
DE2439884B2 (de) Toner für elektrophotographische Entwickler
DE2133836B2 (de) Herstellen von thermoplastischen Folien
DE1694748A1 (de) Folie
DE102018126646A1 (de) Biobasiertes Kunstleder
DE2646595B2 (de) Sinterfähige feinteilige Polyvinylchlorid-Formmassen
DE1547905A1 (de) Photographischer Film mit antistatischen Eigenschaften
DE1769595C3 (de) Verfahren zur Herstellung von gasdurchlässigen, hydrophoben Folien aus fluorhaltigen Polymeren für elektrochemische Zellen, insbesondere Brennstoffzellen
DE2438121B2 (de) Verfahren zur Herstellung gleitfähiger Antistatikschichten
DE1814869C3 (de) Wäßrige Paste zur Herstellung von elektrischen Widerständen
DE3207827A1 (de) Photographisches aufzeichnungsmaterial
DE2363758C3 (de) Flammwidrige Polyestermasse
DE1103578B (de) Weichmacher fuer Vinylchloridpolymerisate
DE3415215A1 (de) Gegen fotografische baeder resistentes fotografisches traegermaterial
DE102017222627A1 (de) Verfahren zur Herstellung einer Elektrode in einer Polymerelektrolytbrennstoffzelle und Elektrode unter Verwendung desselben
DE2235408C2 (de) Elektrophotographisches Aufzeichnungsmaterial
DE1519433A1 (de) Verfahren zur Verbesserung der Gleitfaehigkeit von lackierten Cellulosehydratfolien
DE1694207A1 (de) Flammwidrige Formmassen auf Basis von gesaettigten Polyestern
DE2217083A1 (de) Antistatische Dispersion und Verwendung derselben zur antistatischen Behandlung von photographischen Materialien