JPS5696909A - Preparation of hollow fiber - Google Patents
Preparation of hollow fiberInfo
- Publication number
- JPS5696909A JPS5696909A JP17173879A JP17173879A JPS5696909A JP S5696909 A JPS5696909 A JP S5696909A JP 17173879 A JP17173879 A JP 17173879A JP 17173879 A JP17173879 A JP 17173879A JP S5696909 A JPS5696909 A JP S5696909A
- Authority
- JP
- Japan
- Prior art keywords
- spinning solution
- hollow fiber
- fiber
- core liquid
- coagulation bath
- 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
Abstract
PURPOSE: To obtain a hollow fiber, useful for hemodialysis, and having improved springiness and slight deterioration in properties, by extruding a cellulose ester spinning solution through an annular slit, and simultaneously introducing a liquid at a lower temperature than the spinning solution into the hollow part to coagulate the fiber in a coagulation bath.
CONSTITUTION: A cellulose ester, e.g. cellulose acetate, is dissolved in a mixed solvent of acetone with formamide, and the resultant spinning solution is extruded through an annular slit into a filamentary material. A core liquid, e.g. d-limonene, at a lower temperature than the spinning solution is simultaneously introduced into the internal hollow part of the filamentary material, which is then coagulated in a coagulation bath to give the aimed hollow fiber. The temperature difference between the spinning solution and the core liquid is preferably 10°C or more.
EFFECT: The low temperature of the core liquid suppresses the diffusion thereof into the spinning solution without causing rapid gelation on the inner surface of the hollow fiber. Thus, the inner surface of the fiber can be smoothed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17173879A JPS5696909A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17173879A JPS5696909A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5696909A true JPS5696909A (en) | 1981-08-05 |
Family
ID=15928759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17173879A Pending JPS5696909A (en) | 1979-12-29 | 1979-12-29 | Preparation of hollow fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5696909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095515A (en) * | 2007-10-18 | 2009-05-07 | Toyobo Co Ltd | Blood purifier excellent in volume liquid substitution characteristic |
| JP2013144162A (en) * | 2013-04-15 | 2013-07-25 | Toyobo Co Ltd | Blood purifier excelling in replacement characteristic of large amount of liquid |
-
1979
- 1979-12-29 JP JP17173879A patent/JPS5696909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095515A (en) * | 2007-10-18 | 2009-05-07 | Toyobo Co Ltd | Blood purifier excellent in volume liquid substitution characteristic |
| JP2013144162A (en) * | 2013-04-15 | 2013-07-25 | Toyobo Co Ltd | Blood purifier excelling in replacement characteristic of large amount of liquid |
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