JPS6467209A - Composite membrane having selective permeability to gases - Google Patents
Composite membrane having selective permeability to gasesInfo
- Publication number
- JPS6467209A JPS6467209A JP62223484A JP22348487A JPS6467209A JP S6467209 A JPS6467209 A JP S6467209A JP 62223484 A JP62223484 A JP 62223484A JP 22348487 A JP22348487 A JP 22348487A JP S6467209 A JPS6467209 A JP S6467209A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- organopolysiloxane
- thin membrane
- porous support
- film
- 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
- 239000012528 membrane Substances 0.000 title abstract 13
- 239000002131 composite material Substances 0.000 title abstract 3
- 230000035699 permeability Effects 0.000 title abstract 3
- 239000007789 gas Substances 0.000 title abstract 2
- 229920001296 polysiloxane Polymers 0.000 abstract 6
- 229920000642 polymer Polymers 0.000 abstract 3
- 230000009477 glass transition Effects 0.000 abstract 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 abstract 2
- -1 polysiloxane Polymers 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- DCGLONGLPGISNX-UHFFFAOYSA-N trimethyl(prop-1-ynyl)silane Chemical compound CC#C[Si](C)(C)C DCGLONGLPGISNX-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- 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 composite membrane consisting of a polymeric thin membrane of an organopolysiloxane having no film-forming ability and a vitreous polymer thin membrane having a glass transition temperature above a specific value. 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 thin membrane of the polymer. This water surface-cast membrane is bonded with the surface of the porous support to which the methylhydrogen polysiloxane has adhered. Thus, a composite membrane having selective permeability to gases is obtained, said membrane being composed of the porous support, the polymeric thin membrane of organopolysiloxane, which is formed on the support and has no film-forming ability, and the membrane of vitreous polymer which is formed on the thin membrane and has a glass transition temperature, Tg, of 180 deg.C or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223484A JPS6467209A (en) | 1987-09-07 | 1987-09-07 | Composite membrane having selective permeability to gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223484A JPS6467209A (en) | 1987-09-07 | 1987-09-07 | Composite membrane having selective permeability to gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6467209A true JPS6467209A (en) | 1989-03-13 |
Family
ID=16798856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62223484A Pending JPS6467209A (en) | 1987-09-07 | 1987-09-07 | Composite membrane having selective permeability to gases |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6467209A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342432A (en) * | 1989-12-23 | 1994-08-30 | Hoechst Aktiengesellschaft | Composite membrane, process for its production and its use |
-
1987
- 1987-09-07 JP JP62223484A patent/JPS6467209A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342432A (en) * | 1989-12-23 | 1994-08-30 | Hoechst Aktiengesellschaft | Composite membrane, process for its production and its use |
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