JPS5643415A - Production of hollow fiber - Google Patents
Production of hollow fiberInfo
- Publication number
- JPS5643415A JPS5643415A JP11758279A JP11758279A JPS5643415A JP S5643415 A JPS5643415 A JP S5643415A JP 11758279 A JP11758279 A JP 11758279A JP 11758279 A JP11758279 A JP 11758279A JP S5643415 A JPS5643415 A JP S5643415A
- Authority
- JP
- Japan
- Prior art keywords
- formamide
- cellulose ester
- solution containing
- acetone
- solution
- 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 the titled fiber, useful for a hemodialyzer etc., and having improved removing property of a medium-molecular weight substance, by introducing a specific core liquid into the inner hollow part in extruding a cellulose ester solution in a mixed solvent of acetone with formamide.
CONSTITUTION: A cellulose ester, e.g. cellulose acetate, is dissolved in a mixed solvent of acetone with formamide to prepare a spinning solution containing 32wt% or more the formamide. The resultant solution is then extruded through an annular slit into a filamentary material, and one type selected from (A) a solvent and/or a swelling agent for the cellulose ester or a liquid containing at least one of them, (B) an aqueous solution containing a water-soluble salt in an amount sufficient to cause the phase separation from the spinning solution and (C) a monoterpene or a solution containing it as a core liquid is introduced into the inner hollow part of the filamentary material simultaneously to give the aimed hollow fiber having a great permeability coefficient.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11758279A JPS5643415A (en) | 1979-09-13 | 1979-09-13 | Production of hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11758279A JPS5643415A (en) | 1979-09-13 | 1979-09-13 | Production of hollow fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5643415A true JPS5643415A (en) | 1981-04-22 |
Family
ID=14715381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11758279A Pending JPS5643415A (en) | 1979-09-13 | 1979-09-13 | Production of hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5643415A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60806A (en) * | 1983-06-17 | 1985-01-05 | Teijin Ltd | Manufacture of plasma albumin permeable hollow yarn membrane |
-
1979
- 1979-09-13 JP JP11758279A patent/JPS5643415A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60806A (en) * | 1983-06-17 | 1985-01-05 | Teijin Ltd | Manufacture of plasma albumin permeable hollow yarn membrane |
JPH0318492B2 (en) * | 1983-06-17 | 1991-03-12 | Teijin Ltd |
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