GB576659A - Improvements relating to the manufacture of micro porous material - Google Patents

Improvements relating to the manufacture of micro porous material

Info

Publication number
GB576659A
GB576659A GB14822/43A GB1482243A GB576659A GB 576659 A GB576659 A GB 576659A GB 14822/43 A GB14822/43 A GB 14822/43A GB 1482243 A GB1482243 A GB 1482243A GB 576659 A GB576659 A GB 576659A
Authority
GB
United Kingdom
Prior art keywords
dough
polyethylene
dextrin
starch
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
GB14822/43A
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 EPS Co Ltd
Original Assignee
ERIC MAURICE O CONOR HONEY
Pritchett and Gold and EPS 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
Priority to BE459506D priority Critical patent/BE459506A/fr
Priority to GB14563/42A priority patent/GB565022A/en
Priority to GB14550/43A priority patent/GB576657A/en
Priority to GB14551/43A priority patent/GB576658A/en
Application filed by ERIC MAURICE O CONOR HONEY, Pritchett and Gold and EPS Co Ltd filed Critical ERIC MAURICE O CONOR HONEY
Priority to GB14822/43A priority patent/GB576659A/en
Priority to CH240650D priority patent/CH240650A/en
Priority to FR913238D priority patent/FR913238A/en
Publication of GB576659A publication Critical patent/GB576659A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators 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
    • H01B3/44—Insulators 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
    • H01B3/441—Insulators 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
    • 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
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/07—Aldehydes; Ketones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions 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
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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
    • C08L27/02—Compositions 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
    • C08L27/04—Compositions 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
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators 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
    • 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
    • C08J2327/04—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 chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Microporous material is produced by producing a dough by incorporating in polyethylene, at 90 DEG to 160 DEG C., fine particles of a material which can be subsequently removed therefrom and a solvent for the polyethylene which acts as a temporary plasticiser thereof, the resulting dough being then formed into desired shapes, the solvent removed and the solid dough treated for the removal of the particles so as to leave micropores in the solid polyethylene. Specified materials, the fine particles of which may be added, are starch and dextrin, while xylene, methyl ethyl ketone, methyl cyclohexanone and ethyl lactate are specified as temporary plasticisers. The dough may be shaped by moulding, extrusion or rolling and the solvent removed by evaporation. The starch or dextrin is swollen by treatment with hot water and removed by treatment with hot sulphuric acid or with an enzyme, e.g. malt diastase or with hot water for some time. The shaped dough is then washed in water and dried, and it may be treated with a wetting-out agent such as highly sulphonated oil before the drying. Wood flour or the lignin bodies obtained from waste sulphite liquors in paper-making plants may be incorporated in the polyethylene which may also have added polyisobutylene or carbon black. The final products may be used as diaphragms or separators for electrical accumulators.
GB14822/43A 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material Expired GB576659A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE459506D BE459506A (en) 1942-10-17
GB14563/42A GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB14550/43A GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB14551/43A GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material
GB14822/43A GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material
CH240650D CH240650A (en) 1942-10-17 1943-10-16 Process for manufacturing objects made of microporous material, in particular diaphragms.
FR913238D FR913238A (en) 1942-10-17 1945-08-07 Microporous separator or diaphragm

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB14563/42A GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB240650X 1942-10-17
GB110343X 1943-03-11
GB14550/43A GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB14822/43A GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material

Publications (1)

Publication Number Publication Date
GB576659A true GB576659A (en) 1946-04-15

Family

ID=63721240

Family Applications (4)

Application Number Title Priority Date Filing Date
GB14563/42A Expired GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB14550/43A Expired GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB14551/43A Expired GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material
GB14822/43A Expired GB576659A (en) 1942-10-17 1943-09-09 Improvements relating to the manufacture of micro porous material

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB14563/42A Expired GB565022A (en) 1942-10-17 1942-10-17 Improvements in micro-porous separators or diaphragms
GB14550/43A Expired GB576657A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro-porous material
GB14551/43A Expired GB576658A (en) 1942-10-17 1943-09-06 Improvements relating to the manufacture of micro porous material

Country Status (4)

Country Link
BE (1) BE459506A (en)
CH (1) CH240650A (en)
FR (1) FR913238A (en)
GB (4) GB565022A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3121698A (en) * 1958-02-11 1964-02-18 Nat Lead Co Process of coating cellulosic particles by polymerizing a 1-olefin onto said particles; process of removing the cellulosic particles from the coated particles and hollowshells obtained therefrom
WO2022219298A1 (en) * 2021-04-15 2022-10-20 Dyson Technology Limited Cell separator

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL144126B (en) * 1948-01-02 Wayne Manufacturing Co DEVICE FOR REMOVING TREE STUNKS.
NL87193C (en) * 1951-05-05
US2794753A (en) * 1951-08-23 1957-06-04 Electric Storage Battery Co Method of producing microporous materials resistant to chemical attack
DE1010267B (en) * 1952-07-17 1957-06-13 Chloride Electrical Storage Co Process for the production of microporous films or the like from thermoplastic materials
GB885825A (en) * 1958-05-14 1961-12-28 Svenska Ackumulator Ab A micro-porous material and method of making such material
JPS61138776A (en) * 1984-12-07 1986-06-26 第一工業製薬株式会社 Production of moisture permeable and water-proof coated cloth
US5389433A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator
US5362582A (en) * 1993-04-01 1994-11-08 W.R. Grace & Co.-Conn. Battery separator
US5346788A (en) * 1993-04-01 1994-09-13 W. R. Grace & Co.-Conn. Microporous polyurethane based battery separator
US5389463A (en) * 1993-04-01 1995-02-14 W. R. Grace & Co.-Conn. Battery separator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3121698A (en) * 1958-02-11 1964-02-18 Nat Lead Co Process of coating cellulosic particles by polymerizing a 1-olefin onto said particles; process of removing the cellulosic particles from the coated particles and hollowshells obtained therefrom
WO2022219298A1 (en) * 2021-04-15 2022-10-20 Dyson Technology Limited Cell separator
GB2606138A (en) * 2021-04-15 2022-11-02 Dyson Technology Ltd Cell separator

Also Published As

Publication number Publication date
CH240650A (en) 1946-01-15
GB576657A (en) 1946-04-15
BE459506A (en) 1900-01-01
FR913238A (en) 1946-09-02
GB565022A (en) 1944-10-24
GB576658A (en) 1946-04-15

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