GB727679A - Improvements in the manufacture of micro-porous material - Google Patents

Improvements in the manufacture of micro-porous material

Info

Publication number
GB727679A
GB727679A GB18073/52A GB1807352A GB727679A GB 727679 A GB727679 A GB 727679A GB 18073/52 A GB18073/52 A GB 18073/52A GB 1807352 A GB1807352 A GB 1807352A GB 727679 A GB727679 A GB 727679A
Authority
GB
United Kingdom
Prior art keywords
solvent
sheet
lbs
fine particles
wholly
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
GB18073/52A
Inventor
Eric Maurice O'conor Honey
Charles Rupert Hardy
Frank Sharp
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.)
Pritchett and Gold and EPS Co Ltd
Original Assignee
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 BE521528D priority Critical patent/BE521528A/fr
Priority to BE521527D priority patent/BE521527A/fr
Application filed by Pritchett and Gold and EPS Co Ltd filed Critical Pritchett and Gold and EPS Co Ltd
Priority to GB18073/52A priority patent/GB727679A/en
Priority to DEC7859A priority patent/DE1013421B/en
Priority to CH316763D priority patent/CH316763A/en
Priority to CH315604D priority patent/CH315604A/en
Priority to ES0210427A priority patent/ES210427A1/en
Priority to FR1096837D priority patent/FR1096837A/en
Priority to FR1086425D priority patent/FR1086425A/en
Publication of GB727679A publication Critical patent/GB727679A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H01M50/406—Moulding; Embossing; Cutting
    • 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
    • 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)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (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

Microporous material is obtained by subjecting a sheet, which comprises a thermoplastic material such as a rubber or a polyvinyl resin, fine particles which may subsequently be removed, and a solvent which wholly or partially dissolves the thermoplastic material while having no deleterious effect on the fine particles. after the solvent has been wholly or in part removed, to mechanical work whereby the sheet is reduced in thickness or increased in another dimension so that adjacent particles are forced into intimate contact and their encapsulating membranes disrupted, the fine particles being then removed. In examples, a mixture is made from either polyvinyl chloride or a copolymer of vinyl chloride with vinylidene chloride or a butadiene-acrylonitrile copolymer, sodium chloride, methyl cyclohexanone and either dibutyl phthalate or polypropylene silicate and is sheeted to approximately 0.08 inch and then calendered to 0.02 inch, the solvent is then removed in an air oven and then the sheet calendered to 0.012 inch, and after leaching out the salt the microporous sheet is dried. Isophorone may also be used as the solvent. Specification 565,022 is referred to.ALSO:Microporous material is obtained by subjecting a material in sheet form which comprises a thermoplastic material such as rubber, fine particles which may subsequently be removed, and a solvent which wholly or partially dissolves the thermoplastic material while having no deleterious effect on the fine particles, after the solvent has been wholly or in part removed, to mechanical work whereby the sheet is reduced in thickness or increased in another dimension so that adjacent particles are forced into intimate contact and their encapsulating membranes disrupted, the fine particles being then removed. In an example, 23 lbs. of natural rubber is mixed with 100 lbs. of maize starch, 6.3 lbs. of sulphur, 0.4 lbs. of diphenylguanidine, 0.5 lbs. zinc oxide and 30 lbs. cyclohexanone, and the resulting dough extruded to form sheets 0.02 inches thick and then the solvent removed in an oven at 100 DEG C. The sheet is then calendered to reduce its thickness to 0.012 inch and then vulcanized, after which the sheets are treated first with sodium hydroxide solution and then with boiling water to produce a microporous ebonite material. Isophorone may also be used as the solvent. Specification 565,022, [Group IV], is referred to.
GB18073/52A 1952-07-17 1952-07-17 Improvements in the manufacture of micro-porous material Expired GB727679A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
BE521528D BE521528A (en) 1952-07-17
BE521527D BE521527A (en) 1952-07-17
GB18073/52A GB727679A (en) 1952-07-17 1952-07-17 Improvements in the manufacture of micro-porous material
DEC7859A DE1013421B (en) 1952-07-17 1953-07-07 Process for the production of microporous films made of synthetic resin or rubber
CH316763D CH316763A (en) 1952-07-17 1953-07-14 Manufacturing process for micro-porous products
CH315604D CH315604A (en) 1952-07-17 1953-07-14 Manufacturing process for micro-porous products
ES0210427A ES210427A1 (en) 1952-07-17 1953-07-15 Improvements in the manufacture of micro-porous material
FR1096837D FR1096837A (en) 1952-07-17 1953-07-17 Advanced manufacturing process for microporous materials
FR1086425D FR1086425A (en) 1952-07-17 1953-07-17 Improved process for manufacturing microporous materials and resulting products

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB1096837X 1952-07-17
GB315604X 1952-07-17
GB1013421X 1952-07-17
GB18073/52A GB727679A (en) 1952-07-17 1952-07-17 Improvements in the manufacture of micro-porous material
GB316763X 1952-07-17

Publications (1)

Publication Number Publication Date
GB727679A true GB727679A (en) 1955-04-06

Family

ID=63798696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18073/52A Expired GB727679A (en) 1952-07-17 1952-07-17 Improvements in the manufacture of micro-porous material

Country Status (6)

Country Link
BE (2) BE521528A (en)
CH (2) CH316763A (en)
DE (1) DE1013421B (en)
ES (1) ES210427A1 (en)
FR (2) FR1086425A (en)
GB (1) GB727679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292391B (en) * 1958-05-02 1969-04-10 Pritchett & Gold And E P S Com Process for the production of microporous films
EP0000687A1 (en) * 1977-07-15 1979-02-07 Kilcher-Chemie Ag Process for the preparation of a microporous membrane to be used in filtration plants
US4768437A (en) * 1986-06-03 1988-09-06 Porelon, Inc. High contrast printing material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL236216A (en) * 1958-02-17 1900-01-01
US2984869A (en) * 1958-05-02 1961-05-23 Pritchett & Gold & E P S Co Improved method of producing micro-porous sheet
DE1301473B (en) * 1965-05-12 1969-08-21 Takaji Funahasi Process for the production of a porous rubber body
JPS4922472A (en) * 1972-06-22 1974-02-27

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH244901A (en) * 1942-11-19 1946-10-15 Federico Dr Werner Process for the manufacture of porous objects, using thermoplastic resins.
FR1008699A (en) * 1948-05-13 1952-05-20 Manufacturing process for products based on synthetic resin and new products resulting therefrom

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292391B (en) * 1958-05-02 1969-04-10 Pritchett & Gold And E P S Com Process for the production of microporous films
EP0000687A1 (en) * 1977-07-15 1979-02-07 Kilcher-Chemie Ag Process for the preparation of a microporous membrane to be used in filtration plants
US4177228A (en) * 1977-07-15 1979-12-04 Kilcher-Chemie Ag Method of production of a micro-porous membrane for filtration plants
US4768437A (en) * 1986-06-03 1988-09-06 Porelon, Inc. High contrast printing material

Also Published As

Publication number Publication date
DE1013421B (en) 1957-08-08
CH316763A (en) 1956-10-31
CH315604A (en) 1956-08-31
FR1086425A (en) 1955-02-11
BE521528A (en) 1900-01-01
ES210427A1 (en) 1953-12-01
FR1096837A (en) 1955-06-27
BE521527A (en) 1900-01-01

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