JPS5696910A - Preparation of hollow fiber - Google Patents
Preparation of hollow fiberInfo
- Publication number
- JPS5696910A JPS5696910A JP17173979A JP17173979A JPS5696910A JP S5696910 A JPS5696910 A JP S5696910A JP 17173979 A JP17173979 A JP 17173979A JP 17173979 A JP17173979 A JP 17173979A JP S5696910 A JPS5696910 A JP S5696910A
- Authority
- JP
- Japan
- Prior art keywords
- filamentary material
- hollow fiber
- cellulose ester
- monoterpene
- mixed 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.)
- Pending
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
Abstract
PURPOSE: To obtain a hollow fiber, useful for hemodialysis, etc., and having improved springiness and property to remove medium-molecular weight substances, by extruding a cellulose ester solution in a specific mixed solvent through an annular slit into a filamentary material, and simultaneously introducing a specific liquid into the internal hollow part of the filamentary material.
CONSTITUTION: A cellulose ester, e.g. cellulose acetate, is dissolved in a mixed solvent of acetone with formamide, and 1W12wt% water is added thereto. The resultant solution is then extruded through an annular slit into a filamentary material. The filamentary material is then coagulated in a coagulation bath, e.g. water bath, while introducing any of (a) a solvent for the cellulose ester and/or a swelling agent, (b) a concentrated aqueous solution of a salt and (c) monoterpene or a liquid containing the monoterpene simultaneously into the internal hollow part of the filamentary material to give the aimed hollow fiber.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17173979A JPS5696910A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17173979A JPS5696910A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5696910A true JPS5696910A (en) | 1981-08-05 |
Family
ID=15928779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17173979A Pending JPS5696910A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5696910A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH026830A (en) * | 1988-01-29 | 1990-01-11 | Air Prod And Chem Inc | Method for manufacturing a dried semipermiable cellulose film of unsymmetrical type and a dried film manufactured by the method |
-
1979
- 1979-12-29 JP JP17173979A patent/JPS5696910A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH026830A (en) * | 1988-01-29 | 1990-01-11 | Air Prod And Chem Inc | Method for manufacturing a dried semipermiable cellulose film of unsymmetrical type and a dried film manufactured by the method |
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