GB1183470A - Improvements in or relating to Microporous Plastics Members and Process for Making Same - Google Patents

Improvements in or relating to Microporous Plastics Members and Process for Making Same

Info

Publication number
GB1183470A
GB1183470A GB39686/67A GB3968667A GB1183470A GB 1183470 A GB1183470 A GB 1183470A GB 39686/67 A GB39686/67 A GB 39686/67A GB 3968667 A GB3968667 A GB 3968667A GB 1183470 A GB1183470 A GB 1183470A
Authority
GB
United Kingdom
Prior art keywords
solvent
filler
resin
dough
constituent
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
GB39686/67A
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.)
Tudor AB
Original Assignee
Tudor AB
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 Tudor AB filed Critical Tudor AB
Publication of GB1183470A publication Critical patent/GB1183470A/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
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • 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
    • H01M50/417—Polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • 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
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0542—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
    • C08J2201/0544—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being aqueous
    • 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)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Cell Separators (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

1,183,470. Microporous films. TUDOR A.B. 30 Aug., 1967 [1 Sept., 1966], No. 39686/67. Headings B5A and B5B. [Also in Divisions C3 and H1] A microporous plastics member, e.g. battery separator sheet, is made by forming a coherent dough by mixing a thermoplastic resin with a plasticizing amount of a first solvent and with finely divided particles of a filler which contains a volatilizable constituent releasable therefrom by heating and which shrinks irreversibly on release of this constituent, forming the dough into a shaped member, extracting the first solvent from the member by contacting it with a second solvent at a temperature below the b.p. of any liquid present, the second solvent being one which can dissolve the first solvent without dissolving the resin and filler, thereby deplasticizing the member, and then heating the member without softening the resin contained therein until the filler is shrunk within the member by release of its volatilizable content. The resin may be polyethylene, polypropylene, polystyrene or polyvinyl chloride. The filler may be powdered hydrated silica, silica hydrogel or diatomite with absorbed water. The first solvent may be a ketone, e.g. cyclohexanone and the second solvent may be water. In the examples, the dough was shaped by extrusion into a sheet.
GB39686/67A 1966-09-01 1967-08-30 Improvements in or relating to Microporous Plastics Members and Process for Making Same Expired GB1183470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1174766 1966-09-01

Publications (1)

Publication Number Publication Date
GB1183470A true GB1183470A (en) 1970-03-04

Family

ID=20294546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39686/67A Expired GB1183470A (en) 1966-09-01 1967-08-30 Improvements in or relating to Microporous Plastics Members and Process for Making Same

Country Status (13)

Country Link
JP (1) JPS537461B1 (en)
AT (1) AT283478B (en)
BE (1) BE703285A (en)
CH (1) CH453674A (en)
CS (1) CS173554B2 (en)
DE (1) DE1669615A1 (en)
DK (1) DK115668B (en)
ES (2) ES344568A1 (en)
GB (1) GB1183470A (en)
GR (1) GR34120B (en)
IL (1) IL28563A (en)
NL (1) NL6712022A (en)
NO (1) NO130772C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542060A1 (en) * 1995-10-06 1997-04-10 Gefinex Gmbh Use of water and silica as propellant for polypropylene and polystyrene foams

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112654490B (en) * 2020-11-29 2022-06-21 苏州铼赛智能科技有限公司 Bottom exposure 3D printing equipment, control method and control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542060A1 (en) * 1995-10-06 1997-04-10 Gefinex Gmbh Use of water and silica as propellant for polypropylene and polystyrene foams

Also Published As

Publication number Publication date
DK115668B (en) 1969-10-27
AT283478B (en) 1970-08-10
ES344568A1 (en) 1968-12-16
ES358594A1 (en) 1970-04-16
NL6712022A (en) 1968-03-04
GR34120B (en) 1968-03-20
BE703285A (en) 1968-01-15
IL28563A (en) 1971-10-20
NO130772B (en) 1974-10-28
NO130772C (en) 1975-02-05
JPS537461B1 (en) 1978-03-17
CH453674A (en) 1968-03-31
CS173554B2 (en) 1977-02-28
DE1669615A1 (en) 1970-10-22

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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