JPS6467211A - Preparation of composite membrane having selective permeability to gases - Google Patents

Preparation of composite membrane having selective permeability to gases

Info

Publication number
JPS6467211A
JPS6467211A JP22348687A JP22348687A JPS6467211A JP S6467211 A JPS6467211 A JP S6467211A JP 22348687 A JP22348687 A JP 22348687A JP 22348687 A JP22348687 A JP 22348687A JP S6467211 A JPS6467211 A JP S6467211A
Authority
JP
Japan
Prior art keywords
membrane
composite membrane
organopolysiloxane
porous support
gases
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.)
Pending
Application number
JP22348687A
Other languages
Japanese (ja)
Inventor
Yukihiro Saito
Midori Seki
Shiro Asakawa
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP22348687A priority Critical patent/JPS6467211A/en
Publication of JPS6467211A publication Critical patent/JPS6467211A/en
Pending legal-status Critical Current

Links

Landscapes

  • Oxygen, Ozone, And Oxides In General (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To obtain a gas-permeable membrane excellent in permeability, separating ability and stability, by forming on a porous support a polymeric thin membrane of an organopolysiloxane having no film-forming ability and a thin membrane of a vitreous polymer, and then subjecting the resulting composite membrane to a heat treatment at a specific temperature. CONSTITUTION:A thin membrane of either an organopolysiloxane or an organopolysiloxane copolymer which have no film-forming ability, such as methylhydrogen polysiloxane, is allowed to adhere to the surface of a porous support. Then, a solution of poly-1-(trimethylsilyl)propyne in n-hexane etc. is dropped on the surface of water to form a water surface-cast membrane. This cast membrane is bonded with, or otherwise allowed to adhere to, the surface of the porous support to which the methylhydrogen polysiloxane has adhered, thereby preparing a composite membrane comprising the polymeric thin membrane of an organopolysiloxane and the thin membrane of a vitreous polymer, formed thereon, having a glass transition temperature, Tg, of 180 deg.C or higher. Further, this composite membrane is subjected to heat treatment at a temperature in the range of from 40-200 deg.C, thereby obtaining a composite membrane having selective permeability to gases.
JP22348687A 1987-09-07 1987-09-07 Preparation of composite membrane having selective permeability to gases Pending JPS6467211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22348687A JPS6467211A (en) 1987-09-07 1987-09-07 Preparation of composite membrane having selective permeability to gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22348687A JPS6467211A (en) 1987-09-07 1987-09-07 Preparation of composite membrane having selective permeability to gases

Publications (1)

Publication Number Publication Date
JPS6467211A true JPS6467211A (en) 1989-03-13

Family

ID=16798888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22348687A Pending JPS6467211A (en) 1987-09-07 1987-09-07 Preparation of composite membrane having selective permeability to gases

Country Status (1)

Country Link
JP (1) JPS6467211A (en)

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