JPS5477715A - Production of polycarbonate hollow fiber - Google Patents
Production of polycarbonate hollow fiberInfo
- Publication number
- JPS5477715A JPS5477715A JP14259577A JP14259577A JPS5477715A JP S5477715 A JPS5477715 A JP S5477715A JP 14259577 A JP14259577 A JP 14259577A JP 14259577 A JP14259577 A JP 14259577A JP S5477715 A JPS5477715 A JP S5477715A
- Authority
- JP
- Japan
- Prior art keywords
- coagulation
- hollow fibers
- fibers
- polyether
- 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.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
PURPOSE: Outer and inner surfaces of hollow fibers made of a polyether-polycarbonate block copolymer are treated with specific coagulation solutions to impart properties of dialyzing substances of medium-size molecular weight and an adequate extent of ultrafiltration.
CONSTITUTION: A polyether-polycarbonate block copolymer containing 10W35 wt% of polyether component is dissolved in a mixture consisting of a solvent as 1,3-dioxorane and a swelling agent as dimethyl sulforide to form a solution preferably of 5W35 wt% concentration. The solution is extruded from ring orifices to form hollow fibers. A coagulation liquid with a coagulation value of more than 30 is poured into the inner parts of the hollow fibers to effect the coagulation of the inner surfaces and at the same time a part of the solvent is evapolated from the outside surfaces of the fibers by drying. Then the fibers are dipped into a coagulation path with a coagulation value of less than 20 as water to coagulate from the outside surfaces to produce the objective hollow fibers.
USE: Blood dialysis.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14259577A JPS5477715A (en) | 1977-11-30 | 1977-11-30 | Production of polycarbonate hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14259577A JPS5477715A (en) | 1977-11-30 | 1977-11-30 | Production of polycarbonate hollow fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5477715A true JPS5477715A (en) | 1979-06-21 |
JPS572809B2 JPS572809B2 (en) | 1982-01-19 |
Family
ID=15318949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14259577A Granted JPS5477715A (en) | 1977-11-30 | 1977-11-30 | Production of polycarbonate hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477715A (en) |
-
1977
- 1977-11-30 JP JP14259577A patent/JPS5477715A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS572809B2 (en) | 1982-01-19 |
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