GB1424804A - Porous diaphragms - Google Patents

Porous diaphragms

Info

Publication number
GB1424804A
GB1424804A GB535172A GB535172A GB1424804A GB 1424804 A GB1424804 A GB 1424804A GB 535172 A GB535172 A GB 535172A GB 535172 A GB535172 A GB 535172A GB 1424804 A GB1424804 A GB 1424804A
Authority
GB
United Kingdom
Prior art keywords
sheet
dough
mixed
calendered
pieces
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
GB535172A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Priority to BE794889D priority Critical patent/BE794889A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB535172A priority patent/GB1424804A/en
Priority to US326475A priority patent/US3890417A/en
Priority to ZA730564A priority patent/ZA73564B/en
Priority to IL41422A priority patent/IL41422A/en
Priority to AR246386A priority patent/AR193914A1/en
Priority to FI298/73A priority patent/FI57895C/en
Priority to CA162,763A priority patent/CA1004819A/en
Priority to NL7301516A priority patent/NL7301516A/xx
Priority to AT92873*#A priority patent/AT328751B/en
Priority to FR7303847A priority patent/FR2170247B1/fr
Priority to SU1881941A priority patent/SU539536A3/en
Priority to IT19991/73A priority patent/IT978776B/en
Priority to AU51734/73A priority patent/AU474272B2/en
Priority to CH156973A priority patent/CH583304A5/xx
Priority to JP48013872A priority patent/JPS4999968A/ja
Priority to DE2305509A priority patent/DE2305509C2/en
Publication of GB1424804A publication Critical patent/GB1424804A/en
Priority to MY197725A priority patent/MY7700025A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B13/00—Diaphragms; Spacing elements
    • C25B13/04—Diaphragms; Spacing elements characterised by the material
    • C25B13/08—Diaphragms; Spacing elements characterised by the material based on organic materials
    • 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
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/426—Fluorocarbon polymers
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1424804 Porous plastics laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1973 [4 Feb 1972] 5351/72 Heading B5N [Also in Divisions C3 and C7] Laminates comprise a number of sheets of porous polytetrafluoroethylene calendered to each other and optionally to a sheet of polymer e.g. polypropylene, gauze. In the examples, aqueous dispersions of polytetrafluoroethylene were mixed with water, titanium dioxide and maize and potato starch, and the mixture was stirred with a paddle-mixer to form a paste: the paste was then (i) dried and then mixed with water to form a dough, (ii) mixed at a high shear rate to form a dough, or (iii) mixed with a maleic anhydride/methyl vinyl ether copolymer as thickening agent and NaOH and stirred to form a dough; the dough was then calendered to form a sheet which was cut into pieces and the pieces were laid over each other to form a laminate which was calendered again and the resultant sheet again cut into pieces and laminated; this calendering and laminating was repeated a number of times with and without rotation of the sheet through 90 degrees in the horizontal plane before calendering; finally a polypropylene gauze was laminated on to the above sheet by calendering and the laminate was soaked in aqueous hydrochloric acid to remove the starch and thereby produce a porous sheet suitable for use as a diaphragm in electrolytic cells. Other fillers, removable materials, &c. are mentioned.
GB535172A 1972-02-04 1972-02-04 Porous diaphragms Expired GB1424804A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
BE794889D BE794889A (en) 1972-02-04 PROCESS FOR MANUFACTURING A POROUS DIAPHRAGM
GB535172A GB1424804A (en) 1972-02-04 1972-02-04 Porous diaphragms
US326475A US3890417A (en) 1972-02-04 1973-01-24 Porous diaphragms
ZA730564A ZA73564B (en) 1972-02-04 1973-01-25 Porous diaphragms
IL41422A IL41422A (en) 1972-02-04 1973-01-30 Method of manufacturing porous polyetrafluoroethylene diaphragms
AR246386A AR193914A1 (en) 1972-02-04 1973-02-01 METHOD TO PRODUCE A POROUS DIAPHRAGM
FI298/73A FI57895C (en) 1972-02-04 1973-02-01 FRONT PROCESSING FRAME RELEASE DIAPHRAGM
AT92873*#A AT328751B (en) 1972-02-04 1973-02-02 METHOD FOR PRODUCING A POROSIC DIAPHRAGM, IN PARTICULAR FOR USE IN ELECTROLYTIC CELLS
NL7301516A NL7301516A (en) 1972-02-04 1973-02-02
CA162,763A CA1004819A (en) 1972-02-04 1973-02-02 Porous diaphragms
FR7303847A FR2170247B1 (en) 1972-02-04 1973-02-02
SU1881941A SU539536A3 (en) 1972-02-04 1973-02-02 A method of manufacturing a porous diaphragm
IT19991/73A IT978776B (en) 1972-02-04 1973-02-02 POROUS DIAPHRAGM ITS USES AND METHOD OF ITS PREPARATION
AU51734/73A AU474272B2 (en) 1972-02-04 1973-02-02 Porous diaphragms
CH156973A CH583304A5 (en) 1972-02-04 1973-02-05
JP48013872A JPS4999968A (en) 1972-02-04 1973-02-05
DE2305509A DE2305509C2 (en) 1972-02-04 1973-02-05 Method of making a porous diaphragm
MY197725A MY7700025A (en) 1972-02-04 1977-12-31 Porous diaphragms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB535172A GB1424804A (en) 1972-02-04 1972-02-04 Porous diaphragms

Publications (1)

Publication Number Publication Date
GB1424804A true GB1424804A (en) 1976-02-11

Family

ID=9794471

Family Applications (1)

Application Number Title Priority Date Filing Date
GB535172A Expired GB1424804A (en) 1972-02-04 1972-02-04 Porous diaphragms

Country Status (18)

Country Link
US (1) US3890417A (en)
JP (1) JPS4999968A (en)
AR (1) AR193914A1 (en)
AT (1) AT328751B (en)
AU (1) AU474272B2 (en)
BE (1) BE794889A (en)
CA (1) CA1004819A (en)
CH (1) CH583304A5 (en)
DE (1) DE2305509C2 (en)
FI (1) FI57895C (en)
FR (1) FR2170247B1 (en)
GB (1) GB1424804A (en)
IL (1) IL41422A (en)
IT (1) IT978776B (en)
MY (1) MY7700025A (en)
NL (1) NL7301516A (en)
SU (1) SU539536A3 (en)
ZA (1) ZA73564B (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280435A1 (en) * 1974-08-02 1976-02-27 Rhone Poulenc Ind PROCESS FOR OBTAINING A MICROPOREOUS MEMBRANE AND NEW PRODUCT THUS OBTAINED
US4129470A (en) * 1974-10-17 1978-12-12 Homsy Charles A Method of preparing a porous implantable material from polytetrafluoroethylene and carbon fibers
US6436135B1 (en) 1974-10-24 2002-08-20 David Goldfarb Prosthetic vascular graft
JPS568901Y2 (en) * 1975-07-23 1981-02-26
US4058482A (en) * 1976-12-20 1977-11-15 United Technologies Corporation Fuel cell electrode
US4153661A (en) * 1977-08-25 1979-05-08 Minnesota Mining And Manufacturing Company Method of making polytetrafluoroethylene composite sheet
US4110153A (en) * 1977-09-08 1978-08-29 Ppg Industries, Inc. Method of forming a microporous diaphragm
US4207705A (en) * 1977-10-21 1980-06-17 Minnesota Mining And Manufacturing Company Plant nourishment delivery device
US4380521A (en) * 1978-02-13 1983-04-19 The Dow Chemical Company Method to produce a polytetra-fluoroethylene diaphragm
US4289600A (en) * 1978-03-31 1981-09-15 Hooker Chemicals & Plastics Corp. Microporous membrane materials
IN152082B (en) * 1978-11-03 1983-10-15 Hooker Chemicals Plastics Corp
US4250002A (en) * 1979-09-19 1981-02-10 Hooker Chemicals & Plastics Corp. Polymeric microporous separators for use in electrolytic processes and devices
US4256845A (en) * 1979-02-15 1981-03-17 Glasrock Products, Inc. Porous sheets and method of manufacture
US4292146A (en) * 1979-08-07 1981-09-29 Hooker Chemicals & Plastics Corp. Porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells
US4342636A (en) * 1979-08-07 1982-08-03 Hooker Chemicals & Plastics Corp. Process for forming a porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells
US4297196A (en) * 1980-03-17 1981-10-27 Hooker Chemicals & Plastics Corp. Stable low voltage microporous diaphragm for electrolytic cells
US4405544A (en) * 1980-10-31 1983-09-20 Diamond Shamrock Corporation Strengthening of carbon black-teflon-containing electrode
NO148267C (en) * 1981-06-16 1983-09-07 Norsk Hydro As Water electrolysis diaphragm
US4556618A (en) * 1983-12-01 1985-12-03 Allied Corporation Battery electrode and method of making
US4921587A (en) * 1985-09-19 1990-05-01 H-D Tech, Inc. Porous diaphragm for electrochemical cell
US4891107A (en) * 1985-09-19 1990-01-02 H-D Tech Inc. Porous diaphragm for electrochemical cell
GB8600401D0 (en) * 1986-01-08 1986-02-12 Hydrogen Systems Nv Ion-permeable diaphragms
US4906423A (en) * 1987-10-23 1990-03-06 Dow Corning Wright Methods for forming porous-surfaced polymeric bodies
US5030403A (en) * 1989-01-17 1991-07-09 Ppg Industries, Inc. Method for making polymeric fibrils
US6207251B1 (en) 1994-01-10 2001-03-27 Minnesota Mining And Manufacturing Company Reinforced particle-loaded fibrillated PTFE web
US5904848A (en) 1996-02-21 1999-05-18 Cpg, Inc. Controlled pore glass-synthetic resin membrane
US6103172A (en) 1998-04-07 2000-08-15 Pall Corporation Method of preparaing a porous polytetrafluoroethylene membranne
TW587396B (en) * 2000-03-31 2004-05-11 Nitto Denko Corp Gas component treated sheet and electroluminescent element containing the same
US7075187B1 (en) 2001-11-09 2006-07-11 Combimatrix Corporation Coating material over electrodes to support organic synthesis
US7175783B2 (en) * 2003-08-19 2007-02-13 Patrick Michael Curran Carbon electrode for use in aqueous electrochemical devices and method of preparation
EP1528126A1 (en) * 2003-10-30 2005-05-04 Vandenborre Hydrogen Systems N.V. An integrated electrolyser module with an internal gas/liquid separator
US7812081B2 (en) * 2008-02-26 2010-10-12 General Electric Company Methods of making a mixture for a PTFE membrane with inorganic materials, and compositions related thereto
JP4842294B2 (en) * 2008-04-30 2011-12-21 日東電工株式会社 Porous sheet, method for producing the same, and heat insulating sheet
CN102216047A (en) * 2008-11-12 2011-10-12 日东电工株式会社 Method for producing insulating thermally conductive sheet, insulating thermally conductive sheet and heat dissipating member
US20110056843A1 (en) 2009-09-08 2011-03-10 Patrick Michael Curran Concentric layer electric double layer capacitor cylinder, system, and method of use
US9808770B2 (en) 2013-05-14 2017-11-07 Pall Corporation High throughput membrane with channels
US9859066B2 (en) 2013-05-24 2018-01-02 Atlantis Technologies Atomic capacitor
US10787378B2 (en) 2018-05-30 2020-09-29 Atlantis Technologies Spirally wound electric double layer capacitor device and associated methods
CN111040348B (en) * 2019-12-26 2021-10-26 江苏东材新材料有限责任公司 Preparation method of fluororesin composite membrane material with high filling amount and large width

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846727A (en) * 1953-09-30 1958-08-12 Du Pont Aqueous dispersions of polymers and shaped articles therefrom
US2881142A (en) * 1954-09-08 1959-04-07 Du Pont Polytetrafluoroethylene aqueous paste and process for shaping same
US2968522A (en) * 1957-12-12 1961-01-17 Du Pont Process for producing shaped articles of tetrafluoroethylene polymers
US2997448A (en) * 1958-09-24 1961-08-22 Du Pont Molded fluorocarbon polymer product and method of preparing same
US3315020A (en) * 1962-03-21 1967-04-18 Gore & Ass Process for preparing biaxially fibrillated sheets
JPS4213560B1 (en) * 1963-11-01 1967-08-01
US3281511A (en) * 1964-05-15 1966-10-25 Gen Plastics Corp Method of preparing microporous tetrafluoroethylene resin sheets
GB1081046A (en) * 1965-08-31 1967-08-31 Ici Ltd Manufacture of porous diaphragms
US3407096A (en) * 1966-01-25 1968-10-22 American Cyanamid Co Fuel cell and method for preparing the electrodes
GB1169601A (en) * 1967-01-25 1969-11-05 American Cyanamid Co Porous Polytetrafluoroethylene
US3576686A (en) * 1968-09-18 1971-04-27 Gen Tire & Rubber Co Method of making microporous films

Also Published As

Publication number Publication date
DE2305509C2 (en) 1983-04-21
IT978776B (en) 1974-09-20
IL41422A0 (en) 1973-03-30
SU539536A3 (en) 1976-12-15
DE2305509A1 (en) 1973-08-09
US3890417A (en) 1975-06-17
IL41422A (en) 1976-03-31
FR2170247A1 (en) 1973-09-14
ZA73564B (en) 1973-10-31
AU5173473A (en) 1974-08-08
MY7700025A (en) 1977-12-31
FI57895B (en) 1980-07-31
CA1004819A (en) 1977-02-08
AT328751B (en) 1976-04-12
ATA92873A (en) 1975-06-15
AU474272B2 (en) 1976-07-15
CH583304A5 (en) 1976-12-31
AR193914A1 (en) 1973-05-31
JPS4999968A (en) 1974-09-20
FR2170247B1 (en) 1976-11-05
BE794889A (en) 1973-08-02
FI57895C (en) 1980-11-10
NL7301516A (en) 1973-08-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee