GB1169601A - Porous Polytetrafluoroethylene - Google Patents

Porous Polytetrafluoroethylene

Info

Publication number
GB1169601A
GB1169601A GB3814/67A GB381467A GB1169601A GB 1169601 A GB1169601 A GB 1169601A GB 3814/67 A GB3814/67 A GB 3814/67A GB 381467 A GB381467 A GB 381467A GB 1169601 A GB1169601 A GB 1169601A
Authority
GB
United Kingdom
Prior art keywords
sheets
particles
sheet
fibrillated
porous
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.)
Expired
Application number
GB3814/67A
Inventor
Henry Patrick Landi
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
Priority to GB3814/67A priority Critical patent/GB1169601A/en
Publication of GB1169601A publication Critical patent/GB1169601A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B01D67/0039—Inorganic membrane manufacture
    • B01D67/0053—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0058—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0289—Means for holding the electrolyte
    • 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
    • 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

Landscapes

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

Abstract

1,169,601. Making porous P.T.F.E. sheets. AMERICAN CYANAMID CO. 25 Jan., 1967, No. 3814/67. Heading B5A. [Also in Divisions C3 and H1] Wettable, porous, unsintered, completely fibrillated, normally liquid - impermeable P.T.F.E. sheet is made by admixing an aqueous dispersion of P.T.F.E. particles of range of diameter of from 0À05 Á-1À0 Á with a viscous, solvent-extractable resin, milling the formed mixture until the particles are fibrillated, extruding the milled product to form a sheet and solvent extracting the resin from the formed sheets. Shaping may be by injection moulding calendering. The sheets are finally rinsed with alcohol, washed with de-ionized water and dried by rolling between blotting paper.
GB3814/67A 1967-01-25 1967-01-25 Porous Polytetrafluoroethylene Expired GB1169601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3814/67A GB1169601A (en) 1967-01-25 1967-01-25 Porous Polytetrafluoroethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3814/67A GB1169601A (en) 1967-01-25 1967-01-25 Porous Polytetrafluoroethylene

Publications (1)

Publication Number Publication Date
GB1169601A true GB1169601A (en) 1969-11-05

Family

ID=9765408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3814/67A Expired GB1169601A (en) 1967-01-25 1967-01-25 Porous Polytetrafluoroethylene

Country Status (1)

Country Link
GB (1) GB1169601A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139646A1 (en) * 1970-08-13 1972-02-17 Yussa Battery Co Ltd Partition and process for making same
DE2305509A1 (en) * 1972-02-04 1973-08-09 Ici Ltd METHOD OF MANUFACTURING A POROUS DIAPHRAGM
EP0343247A4 (en) * 1987-07-30 1989-11-07 Toray Industries Porous polytetrafluoroethylene membrane, separating apparatus using same, and process for their production.
US6436135B1 (en) 1974-10-24 2002-08-20 David Goldfarb Prosthetic vascular graft

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139646A1 (en) * 1970-08-13 1972-02-17 Yussa Battery Co Ltd Partition and process for making same
DE2305509A1 (en) * 1972-02-04 1973-08-09 Ici Ltd METHOD OF MANUFACTURING A POROUS DIAPHRAGM
US6436135B1 (en) 1974-10-24 2002-08-20 David Goldfarb Prosthetic vascular graft
EP0343247A4 (en) * 1987-07-30 1989-11-07 Toray Industries Porous polytetrafluoroethylene membrane, separating apparatus using same, and process for their production.
EP0343247A1 (en) * 1987-07-30 1989-11-29 Toray Industries, Inc. Porous polytetrafluoroethylene membrane, separating apparatus using same, and process for their production

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