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GB1273717A - Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells - Google Patents

Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Info

Publication number
GB1273717A
GB1273717AGB04610/71AGB1461071AGB1273717AGB 1273717 AGB1273717 AGB 1273717AGB 04610/71 AGB04610/71 AGB 04610/71AGB 1461071 AGB1461071 AGB 1461071AGB 1273717 AGB1273717 AGB 1273717A
Authority
GB
United Kingdom
Prior art keywords
tape
relating
methods
electrochemical cells
platens
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
GB04610/71A
Inventor
Joseph Frederick Edwin Ruffell
Kenneth George Tapping
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.)
Durham Chemicals Ltd
Energy Conversion Ltd
Original Assignee
Durham Chemicals Ltd
Energy Conversion Ltd
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 Durham Chemicals Ltd, Energy Conversion LtdfiledCriticalDurham Chemicals Ltd
Priority to GB04610/71ApriorityCriticalpatent/GB1273717A/en
Publication of GB1273717ApublicationCriticalpatent/GB1273717A/en
Expiredlegal-statusCriticalCurrent

Links

Classifications

Landscapes

Abstract

1,273,717. Polytetrafluoroethylene films. DURHAM CHEMICALS Ltd., and ENERGY CONVERSION Ltd. 24 April, 1969 [25 April, 1968], No. 14610/71. Divided out of 1,256,706. Headings B5A and B5B. [Also in Division C3] The diffusivity of cellular foraminous unsintered polytetrafluoroethylene tape is reduced by subjecting the tape to pressure between the platens of a press. One surface of the tape may have a layer of electrochemical catalytic material applied thereto prior to the pressing. The tape may be of thickness 0.007 inch and may be subjected to a pressure of 1-3.75 tons/inch<SP>2</SP> with the platens being heated to 40-200‹ C. The tape may be used in electrochemical cell electrodes.
GB04610/71A1968-04-251968-04-25Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cellsExpiredGB1273717A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
GB04610/71AGB1273717A (en)1968-04-251968-04-25Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
GB04610/71AGB1273717A (en)1968-04-251968-04-25Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Publications (1)

Publication NumberPublication Date
GB1273717Atrue GB1273717A (en)1972-05-10

Family

ID=10044345

Family Applications (1)

Application NumberTitlePriority DateFiling Date
GB04610/71AExpiredGB1273717A (en)1968-04-251968-04-25Improvements in and relating to methods of treating polytetrafluoroethylene tapes for use in electrochemical cells

Country Status (1)

CountryLink
GB (1)GB1273717A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2515878A1 (en)*1981-11-041983-05-06Inst Francais Du Petrole METHOD FOR MANUFACTURING A GAS FUEL CELL ELECTRODE
GB2211190A (en)*1987-10-191989-06-28Gore & AssRapid recoverable ptfe and a process for its manufacture
US4877661A (en)*1987-10-191989-10-31W. L. Gore & Associates, Inc.Rapidly recoverable PTFE and process therefore
US5026513A (en)*1987-10-191991-06-25W. L. Gore & Associates, Inc.Process for making rapidly recoverable PTFE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2515878A1 (en)*1981-11-041983-05-06Inst Francais Du Petrole METHOD FOR MANUFACTURING A GAS FUEL CELL ELECTRODE
EP0078748A1 (en)*1981-11-041983-05-11Institut Français du PétroleProduction method of a fuel cell electrode
GB2211190A (en)*1987-10-191989-06-28Gore & AssRapid recoverable ptfe and a process for its manufacture
US4877661A (en)*1987-10-191989-10-31W. L. Gore & Associates, Inc.Rapidly recoverable PTFE and process therefore
US5026513A (en)*1987-10-191991-06-25W. L. Gore & Associates, Inc.Process for making rapidly recoverable PTFE
US5308664A (en)*1987-10-191994-05-03W. L. Gore & Associates, Inc.Rapidly recoverable PTFE and process therefore

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Legal Events

DateCodeTitleDescription
PSPatent sealed
PLEEntries relating assignments, transmissions, licences in the register of patents
PLNPPatent lapsed through nonpayment of renewal fees
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