JPS569420A - Method of production of hollow fiber - Google Patents
Method of production of hollow fiberInfo
- Publication number
- JPS569420A JPS569420A JP8473179A JP8473179A JPS569420A JP S569420 A JPS569420 A JP S569420A JP 8473179 A JP8473179 A JP 8473179A JP 8473179 A JP8473179 A JP 8473179A JP S569420 A JPS569420 A JP S569420A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- same
- urea
- component
- produce
- 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: A solution containing a cellulose ester, a specific organic acid and urea is extruded through annular slits and at the same time, a specific liquid is introduced into the hollow part to produce hollow fibers suitably used as hemodialyzing membranes because they have no gigantic voids but high permeation selectivity.
CONSTITUTION: (A) Cellulose ester such as cellulose acetate is dissolved in a solvent containing (B) at least one selected from aliphatic monocarboxylic acids such as acetic acid, aliphatic dicarboxylic acids and their anhydrides and (C) urea as additives. The resulting dope is extruded linearly through annular slits and at the same time, (D) at least one selected from (a) a solvent for component A and/or swelling agent or a liquid containing the same, (b) an aqueous salt solution containing a sufficient amount of a water-soluble salt to cause the phase separation from the solvent for component A and (c) a monocyclic monoterpene or liquid containing the same is introduced into the hollow part to produce the objective hollow fibers.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8473179A JPS569420A (en) | 1979-07-04 | 1979-07-04 | Method of production of hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8473179A JPS569420A (en) | 1979-07-04 | 1979-07-04 | Method of production of hollow fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS569420A true JPS569420A (en) | 1981-01-30 |
Family
ID=13838830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8473179A Pending JPS569420A (en) | 1979-07-04 | 1979-07-04 | Method of production of hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS569420A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60168502A (en) * | 1984-02-10 | 1985-09-02 | Toyobo Co Ltd | Dialytic hollow yarn membrane |
JPS60193504A (en) * | 1984-03-15 | 1985-10-02 | Toyobo Co Ltd | Hollow fiber membrane for dialysis |
JPS6189840A (en) * | 1984-10-11 | 1986-05-08 | 尾池工業株式会社 | Composite heat-insulating material |
-
1979
- 1979-07-04 JP JP8473179A patent/JPS569420A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60168502A (en) * | 1984-02-10 | 1985-09-02 | Toyobo Co Ltd | Dialytic hollow yarn membrane |
JPS60193504A (en) * | 1984-03-15 | 1985-10-02 | Toyobo Co Ltd | Hollow fiber membrane for dialysis |
JPS6189840A (en) * | 1984-10-11 | 1986-05-08 | 尾池工業株式会社 | Composite heat-insulating material |
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