GB565022A - Improvements in micro-porous separators or diaphragms - Google Patents

Improvements in micro-porous separators or diaphragms

Info

Publication number
GB565022A
GB565022A GB1456342A GB1456342A GB565022A GB 565022 A GB565022 A GB 565022A GB 1456342 A GB1456342 A GB 1456342A GB 1456342 A GB1456342 A GB 1456342A GB 565022 A GB565022 A GB 565022A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
starch
polyvinyl chloride
boiling water
dextrin
treated
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
GB1456342A
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.)
ERIC MAURICE O CONOR HONEY
Pritchett and Gold and E P S Co Ltd
Original Assignee
ERIC MAURICE O CONOR HONEY
Pritchett and Gold and E P S Co 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

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane formation
    • B01D67/0023Organic membrane formation by inducing porosity into non porous precursor membranes
    • B01D67/003Organic membrane formation by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26Working-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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/07Aldehydes; Ketones
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00Compositions 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 an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02Homopolymers or copolymers of hydrocarbons
    • C08L25/04Homopolymers or copolymers of styrene
    • C08L25/06Polystyrene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02Starch; Degradation products thereof, e.g. dextrin
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J2327/00Characterised 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
    • C08J2327/02Characterised 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
    • C08J2327/04Characterised 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 chlorine atoms
    • C08J2327/06Homopolymers or copolymers of vinyl chloride

Abstract

Micro-porous material suitable for use as separators or diaphragms, especially for electric accumulators, is prepared by incorporating in polyvinyl chloride fine particles of a substance which can be subsequently removed and a solvent for the polyvinyl chloride (which acts as a temporary plasticiser), the resulting "dough" being shaped, the solvent removed and the particles removed so as to leave micropores in the solid and the product dried. In a preferred form of the process, starch or dextrin (screened) and a solvent, e.g. methyl cyclohexanone, cyclohexanone or chlorobenzene are mixed under reflux with polyvinyl chloride. The dough may be extruded on to a conveyer or endless belt and may pass through a heated tunnel or channel, e.g. heated by radiant lamps. The starch or dextrin may be solubilised by treatment with hot sulphuric acid, e.g. dilute acid, with or without first treating it with boiling water to swell the starch and/or hot caustic alkali. When starch is used the dried material may be treated with boiling water, diastase and again with boiling water before final drying. When dextrin is used, the dried material may be treated with boiling water with or without alkali or acid and then drying. The material may be treated also with a wetting out agent before final drying, specified is a highly sulphonated oil, e.g. Calsolene (Registered Trade Mark) oil H.S. Plasticisers may also be incorporated in the polyvinyl chloride, tricresyl phosphate is specified. Fillers, e.g. wood flour and colouring ingredients, may also be added.
GB1456342A 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms Expired GB565022A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB1456342A GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB240650X 1942-10-17
GB110343X 1943-03-11
GB1455043A GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB1482243A GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
BE459506A BE459506A (en) 1942-10-17
GB1456342A GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB1455143A GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material
GB1455043A GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB1482243A GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material
CH240650A CH240650A (en) 1942-10-17 1943-10-16 A method of manufacturing products of micro-porous material, in particular diaphragms.
FR913238A FR913238A (en) 1942-10-17 1945-08-07 micro-porous separator or diaphragm

Publications (1)

Publication Number Publication Date
GB565022A true true GB565022A (en) 1944-10-24

Family

ID=63721240

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1456342A Expired GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB1455043A Expired GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB1455143A Expired GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material
GB1482243A Expired GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material

Family Applications After (3)

Application Number Title Priority Date Filing Date
GB1455043A Expired GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB1455143A Expired GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material
GB1482243A Expired GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material

Country Status (3)

Country Link
BE (1) BE459506A (en)
FR (1) FR913238A (en)
GB (4) GB565022A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902398C (en) * 1951-05-05 1955-09-15 Yardney International Corp Separators for the electrodes of electric collector
US5346788A (en) * 1993-04-01 1994-09-13 W. R. Grace & Co.-Conn. Microporous polyurethane based battery separator
US5362582A (en) * 1993-04-01 1994-11-08 W.R. Grace & Co.-Conn. Battery separator
US5389463A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator
US5389433A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL144126B (en) * 1948-01-02 Wayne Manufacturing Co A device for the removal of tree stumps.
US2794753A (en) * 1951-08-23 1957-06-04 Electric Storage Battery Co Method of producing microporous materials resistant to chemical attack
US2676929A (en) * 1951-08-23 1954-04-27 Electric Storage Battery Co Stock material for microporous articles and methods of making the same from starch and polyethylene
DE1010267B (en) * 1952-07-17 1957-06-13 Chloride Electrical Storage Co A method of producing mikroporoesen films or the like.. Made of thermoplastic materials
NL122567C (en) * 1958-02-11
GB885825A (en) * 1958-05-14 1961-12-28 Svenska Ackumulator Ab A micro-porous material and method of making such material
JPS6365696B2 (en) * 1984-12-07 1988-12-16 Dai Ichi Kogyo Seiyaku Co Ltd

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902398C (en) * 1951-05-05 1955-09-15 Yardney International Corp Separators for the electrodes of electric collector
US5346788A (en) * 1993-04-01 1994-09-13 W. R. Grace & Co.-Conn. Microporous polyurethane based battery separator
US5362582A (en) * 1993-04-01 1994-11-08 W.R. Grace & Co.-Conn. Battery separator
US5389463A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator
US5389433A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator

Also Published As

Publication number Publication date Type
GB576659A (en) 1946-04-15 application
FR913238A (en) 1946-09-02 grant
GB576657A (en) 1946-04-15 application
GB576658A (en) 1946-04-15 application
BE459506A (en) 1900-01-01 grant

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