JPS54117380A - Polyvinyl alcohol type selectively permeable membrane with superior mechanical performance and production thereof - Google Patents
Polyvinyl alcohol type selectively permeable membrane with superior mechanical performance and production thereofInfo
- Publication number
- JPS54117380A JPS54117380A JP2572278A JP2572278A JPS54117380A JP S54117380 A JPS54117380 A JP S54117380A JP 2572278 A JP2572278 A JP 2572278A JP 2572278 A JP2572278 A JP 2572278A JP S54117380 A JPS54117380 A JP S54117380A
- Authority
- JP
- Japan
- Prior art keywords
- compsn
- pva type
- type polymer
- permeable membrane
- selectively permeable
- 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
Abstract
PURPOSE: To obtain the title membrane with high water permeability, press. resistance, flexibility and superior chemical resistance by subjecting a PVA type polymer compsn. consisting of a polyalkylene glycol with a specific average MW and a PVA type polymer to intramolecular and intermolecular acetal formation.
CONSTITUTION: A PVA type polymer compsn. is prepared contg. 50W150 wt% of a PAG with an average MW of 600W3000, e.g. polyethylene glycol to a PVA type polymer and satisfying the critical blending ratio of PVA and PAG 0.80≤CBR≤ 1.00. The compsn. is solidified, e.g. by extruding a soln. of the compsn. in dimethylsulfoxide, etc. into a solidifying liquid such as lower alcohol. The solidified compsn. is then subjected to intramolecular acetal formation with 10W300 g/l of a monoaldehyde such as CH3CHO and to intermolecular acetal formation with 0.1W 100 g/l of a dialdehyde such as glutaraldehyde, giving a PVA type selectively permeable membrane.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2572278A JPS54117380A (en) | 1978-03-06 | 1978-03-06 | Polyvinyl alcohol type selectively permeable membrane with superior mechanical performance and production thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2572278A JPS54117380A (en) | 1978-03-06 | 1978-03-06 | Polyvinyl alcohol type selectively permeable membrane with superior mechanical performance and production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54117380A true JPS54117380A (en) | 1979-09-12 |
JPS5722602B2 JPS5722602B2 (en) | 1982-05-14 |
Family
ID=12173684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2572278A Granted JPS54117380A (en) | 1978-03-06 | 1978-03-06 | Polyvinyl alcohol type selectively permeable membrane with superior mechanical performance and production thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54117380A (en) |
-
1978
- 1978-03-06 JP JP2572278A patent/JPS54117380A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5722602B2 (en) | 1982-05-14 |
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