JPS57174339A - Solution, method for preparing membrane and extremely thin membrane - Google Patents
Solution, method for preparing membrane and extremely thin membraneInfo
- Publication number
- JPS57174339A JPS57174339A JP5844381A JP5844381A JPS57174339A JP S57174339 A JPS57174339 A JP S57174339A JP 5844381 A JP5844381 A JP 5844381A JP 5844381 A JP5844381 A JP 5844381A JP S57174339 A JPS57174339 A JP S57174339A
- Authority
- JP
- Japan
- Prior art keywords
- org
- water
- dissolving
- copolymer
- solvent
- 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.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To obtain an extremely thin solid membrane which exhibits required gas separation coefficient with a uniform thickness on the surface of the water and is useful for the production of a concentrated specified gas from a gas mixture, by dissolving an allylsilane copolymer in an org. solvent having an appropriate surface tension against water.
CONSTITUTION: An extremely thin membrane is produced from a solution obtd. by dissolving an allylsilane copolymer composed of a repeating unit of formulaI (wherein R1W3 are each a 1W10C alkyl) and a repeating unit of formula II (wherein R4 is H, 3C or lower alkyl; R5 is H, 20C or lower alkyl, alkenyl) and/or a repeating unit of formula III (wherein R6, R7 are eadh H, CH3) in a solvent consisting mainly of a volatile, water-immiscible org. liquid medium capable of dissolving said copolymer and satisfying the relationship of formula IV(wherein c is the surface tension of water, a is the surface tension of said soln. obtd. by dissolving said copolymer in said solvent and b is interfacial tension between said soln. and water, each unit being dyn/cm). Said solvent may contain other org. compd. having a partition coefficient K of 0.5W35 (wherein K is a ratio of the concn. of this org. compd. in said org. liquid medium to the concn. of this org. compd. in water).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5844381A JPS57174339A (en) | 1981-04-20 | 1981-04-20 | Solution, method for preparing membrane and extremely thin membrane |
US06/270,128 US4393113A (en) | 1980-06-05 | 1981-06-03 | Novel silicon-containing copolymer, ultrathin solid membrane composed of said copolymer, use of said solid membrane for concentrating a specified gas in a gaseous mixture, and process for producing said solid membrane |
EP81302493A EP0041839B1 (en) | 1980-06-05 | 1981-06-04 | Ultrathin solid membrane composed of silicon-containing copolymer, process for producing said membrane and use thereof for concentrating a gas |
DE8181302493T DE3172123D1 (en) | 1980-06-05 | 1981-06-04 | Ultrathin solid membrane composed of silicon-containing copolymer, process for producing said membrane and use thereof for concentrating a gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5844381A JPS57174339A (en) | 1981-04-20 | 1981-04-20 | Solution, method for preparing membrane and extremely thin membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57174339A true JPS57174339A (en) | 1982-10-27 |
JPH0150254B2 JPH0150254B2 (en) | 1989-10-27 |
Family
ID=13084535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5844381A Granted JPS57174339A (en) | 1980-06-05 | 1981-04-20 | Solution, method for preparing membrane and extremely thin membrane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57174339A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63100905A (en) * | 1987-10-02 | 1988-05-06 | Teijin Ltd | Permselective membrane formed with novel copolymer |
-
1981
- 1981-04-20 JP JP5844381A patent/JPS57174339A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63100905A (en) * | 1987-10-02 | 1988-05-06 | Teijin Ltd | Permselective membrane formed with novel copolymer |
Also Published As
Publication number | Publication date |
---|---|
JPH0150254B2 (en) | 1989-10-27 |
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