GB1449644A - Process for manufacturing porous polymer film - Google Patents

Process for manufacturing porous polymer film

Info

Publication number
GB1449644A
GB1449644A GB3908173A GB3908173A GB1449644A GB 1449644 A GB1449644 A GB 1449644A GB 3908173 A GB3908173 A GB 3908173A GB 3908173 A GB3908173 A GB 3908173A GB 1449644 A GB1449644 A GB 1449644A
Authority
GB
United Kingdom
Prior art keywords
film
ethylene
vinyl acetate
copolymer
styrene
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
GB3908173A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 claimed from JP8300272A external-priority patent/JPS5627532B2/ja
Priority claimed from JP10252772A external-priority patent/JPS521751B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1449644A publication Critical patent/GB1449644A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • 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
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/12—Insulating conductors or cables by applying loose fibres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

1449644 Porous films MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 17 Aug 1973 [18 Aug 1972 12 Oct 1972] 39081/73 Heading B5B [Also in Division C3] A porous film is prepared by forming a film from a blend of 100 parts by weight of a first polymer composition I and from 30 to 250 parts by weight of a second polymer composition II, stretching the film to increase its dimension in one direction by at least 1À5 times and to increase its surface area by from 2 to 20 times and then treating the stretched film with a liquid or vaporous solvent to swell polymer composition I but to elute the composition II from the film, so leaving a porous film. The size of the pores in the final film may be adjusted by using a copolymer as either I or II and altering the ratio between the components of the copolymer. Specified polymers I are polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, polysulphone, polyamide and an ethylene-vinyl acetate copolymer. Exemplified polymers II are polymethyl methacrylate, polystyrene, ethylene-vinyl acetate copolymer and polyethylene oxide. Specified copolymers for adjusting pore size are, ethylene-vinyl acetate, ethylene-propylene, propylene-vinyl chloride, styrene-acrylonitrile, styrene-butadiene, styrene-methyl acrylate and vinyl acetate-ethyl acrylate copolymers.
GB3908173A 1972-08-18 1973-08-17 Process for manufacturing porous polymer film Expired GB1449644A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8300272A JPS5627532B2 (en) 1972-08-18 1972-08-18
JP10252772A JPS521751B2 (en) 1972-10-12 1972-10-12

Publications (1)

Publication Number Publication Date
GB1449644A true GB1449644A (en) 1976-09-15

Family

ID=26424051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3908173A Expired GB1449644A (en) 1972-08-18 1973-08-17 Process for manufacturing porous polymer film

Country Status (5)

Country Link
CA (1) CA1027319A (en)
DE (1) DE2341542C3 (en)
FR (1) FR2196238B1 (en)
GB (1) GB1449644A (en)
NL (1) NL162107C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4755540A (en) * 1984-05-18 1988-07-05 Raychem Limited Polymer membrane
CN113041848A (en) * 2021-03-24 2021-06-29 南京工业大学 Method for preparing block copolymer hollow fiber membrane by combining selective swelling and melt-spinning stretching method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51119069A (en) * 1975-03-20 1976-10-19 Nippon Oil Co Ltd Method of producing permeable film
JPS5939460B2 (en) * 1976-12-10 1984-09-22 日石三菱株式会社 Manufacturing method of porous membrane
AU1975583A (en) * 1982-09-30 1984-04-05 Extracorporeal Medical Specialties Inc. Making semipermeable membranes from polypropylene and a second polymer
US5102917A (en) * 1990-09-14 1992-04-07 Cpc Engineering Corporation Porous polysulfone media suitable for filtration

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4755540A (en) * 1984-05-18 1988-07-05 Raychem Limited Polymer membrane
CN113041848A (en) * 2021-03-24 2021-06-29 南京工业大学 Method for preparing block copolymer hollow fiber membrane by combining selective swelling and melt-spinning stretching method
WO2022199592A1 (en) * 2021-03-24 2022-09-29 南京工业大学 Method for preparing block copolymer hollow fiber membrane by combining selective swelling and melt spinning and stretching method
US11766640B2 (en) 2021-03-24 2023-09-26 Nanjing Tech University Method for preparing block copolymer hollow fiber membrane by melt spinning-stretching and selective swelling

Also Published As

Publication number Publication date
NL162107C (en) 1980-04-15
CA1027319A (en) 1978-03-07
NL7311347A (en) 1974-02-20
DE2341542A1 (en) 1974-03-21
DE2341542C3 (en) 1978-09-28
FR2196238A1 (en) 1974-03-15
DE2341542B2 (en) 1975-10-09
FR2196238B1 (en) 1977-05-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930816