JPS6467211A - Preparation of composite membrane having selective permeability to gases - Google Patents
Preparation of composite membrane having selective permeability to gasesInfo
- 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
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.
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) |
-
1987
- 1987-09-07 JP JP22348687A patent/JPS6467211A/en active Pending
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