JPS5544326A - Production of hollow fiber - Google Patents
Production of hollow fiberInfo
- Publication number
- JPS5544326A JPS5544326A JP11714278A JP11714278A JPS5544326A JP S5544326 A JPS5544326 A JP S5544326A JP 11714278 A JP11714278 A JP 11714278A JP 11714278 A JP11714278 A JP 11714278A JP S5544326 A JPS5544326 A JP S5544326A
- Authority
- JP
- Japan
- Prior art keywords
- solution
- cellulose ester
- urea
- cellulose
- hollow fiber
- 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)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
PURPOSE: To obtain the porous hollow fibers free from macro-voids by adding water and urea to the cellulose-ester solution dissolved in an organic solvent, extruding the solution through an annular slit and at the same time introducing the solvent or swelling agent for cellulose ester into the linear body hollow part.
CONSTITUTION: Cellulose ester, particularly cellulose acetate is dissolved in an organic solvent such as acetone and an aqueous urea solution is added to this solution to prepare the spining stock solution. The ratio of urea 5W70% to cellulose ester is preferably 10W50% and the ratio of water and urea is 1:1W0.1, preferably 1:1W0.2. The cellulose ester concentration of the stock solution is preferably 10W 30%. This stock solution is extruded to linear form through an annular slit and at the same time the solvent for cellulose ester (e.g., dimethylsulfoxide), swelling agent (e.g.; methyl ethyl ketone) and aqueous salt solution (e.g.; calcium chloride concentration solution) are introduced into the inside hollow part of the linear body, whereby the hollow fiber is obtained. This hollow fiber is suitable for the dialysis membrane, ultrafiltration membrane, reverse, osmosis membrane, etc. of blood.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11714278A JPS5544326A (en) | 1978-09-22 | 1978-09-22 | Production of hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11714278A JPS5544326A (en) | 1978-09-22 | 1978-09-22 | Production of hollow fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5544326A true JPS5544326A (en) | 1980-03-28 |
Family
ID=14704489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11714278A Pending JPS5544326A (en) | 1978-09-22 | 1978-09-22 | Production of hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5544326A (en) |
-
1978
- 1978-09-22 JP JP11714278A patent/JPS5544326A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1305330A (en) | ||
ES8605686A1 (en) | Asymmetric microporous hollow fibre, especially for hemodialysis, and process for making it. | |
ATE31248T1 (en) | MEMBRANE AND PROCESS OF PRODUCTION. | |
JPS5544326A (en) | Production of hollow fiber | |
ATE31487T1 (en) | MEMBRANE AND PROCESS OF PRODUCTION. | |
JPS536627A (en) | Hollow fibers | |
JPS5382670A (en) | Preparation of semipermeable membrane | |
JPS57133211A (en) | Production of hollow fiber of cellulose ester | |
JPS57143510A (en) | Production of high-flux hollow fiber regenerated from cuprammonium cellulose | |
JPS55112310A (en) | Production of acrylonitrile hollow fiber | |
JPS55107505A (en) | Production of hollow fiber | |
JPS5551812A (en) | Production of hollow fiber | |
JPS5696910A (en) | Preparation of hollow fiber | |
JPS5571808A (en) | Production of cellulose hollow | |
JPS5390367A (en) | Preparation of hollow fiber membrane | |
JPS55148208A (en) | Hollow fiber | |
JPS54131025A (en) | Production of hollow cellulose derivative fibers | |
JPS5580515A (en) | Production of hollow fiber | |
JPS5319423A (en) | Production of hollow fiber membranes | |
JPS5580514A (en) | Production of hollow fiber | |
JPS5571811A (en) | Production of hollow fiber | |
JPS52123983A (en) | Treatment of hollow cellulose acetate filament | |
JPS5571809A (en) | Production of anti agglutinating hollow fiber | |
JPS60193504A (en) | Hollow fiber membrane for dialysis | |
JPS569420A (en) | Method of production of hollow fiber |