JPS57174108A - Production of perm selective membrane - Google Patents
Production of perm selective membraneInfo
- Publication number
- JPS57174108A JPS57174108A JP5912781A JP5912781A JPS57174108A JP S57174108 A JPS57174108 A JP S57174108A JP 5912781 A JP5912781 A JP 5912781A JP 5912781 A JP5912781 A JP 5912781A JP S57174108 A JPS57174108 A JP S57174108A
- Authority
- JP
- Japan
- Prior art keywords
- permeated
- 30min
- thickness
- selective membrane
- solidifying
- 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
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To produce an anisotropic perm selective membrane which exhibits umiform performance over a wide area by casting doping liquid on a porous substrate and drying the same partially then solidifying the same by using aq. solidifying liquid of specific temp.
CONSTITUTION: The dope pred. by adding 1pt.wt. polybenzimidazolone, 0.3pt.wt. LiCl and 0.4pt.wt. Ca(NO3)24H2O to 5.1pts.wt. N-methylpyrolidone and mixing and dissolving these is cast at 300μ thickness on polyester taffeta of 150μm thickness and 1cm3/cm2sec air permeability. After this film-like material is dried by hot wind for 5min at 120°C, it is permeated for 30min in an aq. 20wt% NaCl soln. kept at 80°C, whereby it is solidified. Further, this is permeated for 30min in water of ordinary temp, whereby it is rinsed. The resultant permselective membrane exhibits the reverse osmotic performance of 69l/m2 hr and 98.2% salt removal rate.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5912781A JPS57174108A (en) | 1981-04-21 | 1981-04-21 | Production of perm selective membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5912781A JPS57174108A (en) | 1981-04-21 | 1981-04-21 | Production of perm selective membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57174108A true JPS57174108A (en) | 1982-10-26 |
Family
ID=13104326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5912781A Pending JPS57174108A (en) | 1981-04-21 | 1981-04-21 | Production of perm selective membrane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57174108A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5980305A (en) * | 1982-10-29 | 1984-05-09 | Nok Corp | Preparation of ultrafiltration membrane |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504351A (en) * | 1973-05-19 | 1975-01-17 | ||
JPS5031902A (en) * | 1973-07-24 | 1975-03-28 | ||
JPS55152507A (en) * | 1979-05-17 | 1980-11-27 | Nitto Electric Ind Co Ltd | Preparation of selective permeable membrane |
JPS55162311A (en) * | 1979-06-04 | 1980-12-17 | Nitto Electric Ind Co Ltd | Manufacture of selective permeable membrane |
-
1981
- 1981-04-21 JP JP5912781A patent/JPS57174108A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504351A (en) * | 1973-05-19 | 1975-01-17 | ||
JPS5031902A (en) * | 1973-07-24 | 1975-03-28 | ||
JPS55152507A (en) * | 1979-05-17 | 1980-11-27 | Nitto Electric Ind Co Ltd | Preparation of selective permeable membrane |
JPS55162311A (en) * | 1979-06-04 | 1980-12-17 | Nitto Electric Ind Co Ltd | Manufacture of selective permeable membrane |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5980305A (en) * | 1982-10-29 | 1984-05-09 | Nok Corp | Preparation of ultrafiltration membrane |
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