JPS55148211A - Production of asymmetric hollow ethylene-vinyl alcohol membrane - Google Patents
Production of asymmetric hollow ethylene-vinyl alcohol membraneInfo
- Publication number
- JPS55148211A JPS55148211A JP5373079A JP5373079A JPS55148211A JP S55148211 A JPS55148211 A JP S55148211A JP 5373079 A JP5373079 A JP 5373079A JP 5373079 A JP5373079 A JP 5373079A JP S55148211 A JPS55148211 A JP S55148211A
- Authority
- JP
- Japan
- Prior art keywords
- spinneret
- solvent
- fiber
- vinyl alcohol
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain the title membrane usable as filtration membranes for filtration type artificial kidneys, having a small diameter and thickness, by extruding a solution of the polymer in a solvent, e.g. DNSO, through a spinneret, and by coagulating the fiber drawn in a gas at a specific ratio in a coagulation bath at a specified temperature.
CONSTITUTION: Ethylene-vinyl alcohol copolymer is dissolved in a solvent (S), e.g. dimethyl sulfoxide, dimethylacetamide, pyrrolidone, or N-methylpyrrolidone, to form a spinning solution, which is extruded through a spinneret into a fiber while introducing a coagulating liquid (L) from the center of the spinneret. The fiber is then passed through the atmosphere of a gas at a draft ratio of 0.5W20:1, and coagulated in a coagulation bath at a temperature range expressed by the formula [C is the polymer concentration (wt%); T is the coagulation temperature (°C)]. The liquid (L) is preferably a solution of the solvent in S, with a moisture content of 20W100wt%.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5373079A JPS55148211A (en) | 1979-04-30 | 1979-04-30 | Production of asymmetric hollow ethylene-vinyl alcohol membrane |
DE19792935097 DE2935097A1 (en) | 1978-09-07 | 1979-08-30 | AETHYLENE / VINYL ALCOHOL COPOLYMER MEMBRANE |
US06/071,671 US4269713A (en) | 1978-09-07 | 1979-08-31 | Ethylene-vinyl alcohol copolymer membrane and a method for producing the same |
FR7922340A FR2435276A1 (en) | 1978-09-07 | 1979-09-06 | COPOLYMER MEMBRANES OF ETHYLENE AND VINYL ALCOHOL AND PROCESS FOR THEIR PREPARATION |
GB7931000A GB2031792B (en) | 1978-09-07 | 1979-09-06 | Ethylene-vinyl alcohol copolymer membranes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5373079A JPS55148211A (en) | 1979-04-30 | 1979-04-30 | Production of asymmetric hollow ethylene-vinyl alcohol membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55148211A true JPS55148211A (en) | 1980-11-18 |
JPS6227163B2 JPS6227163B2 (en) | 1987-06-12 |
Family
ID=12950937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5373079A Granted JPS55148211A (en) | 1978-09-07 | 1979-04-30 | Production of asymmetric hollow ethylene-vinyl alcohol membrane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55148211A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63175116A (en) * | 1987-01-08 | 1988-07-19 | Mitsubishi Kasei Corp | Copolyamide-imide hollow yarn and production thereof |
JP2002143654A (en) * | 2000-11-08 | 2002-05-21 | Kuraray Co Ltd | Hollow fiber membrane and its manufacturing method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53126319A (en) * | 1977-04-06 | 1978-11-04 | Kuraray Co Ltd | Production of dried hollow fiber with selective permeability |
JPS55122010A (en) * | 1979-03-12 | 1980-09-19 | Kuraray Co Ltd | Preparation of hollow ethylene-vinyl alcohol compolymer membrane |
-
1979
- 1979-04-30 JP JP5373079A patent/JPS55148211A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53126319A (en) * | 1977-04-06 | 1978-11-04 | Kuraray Co Ltd | Production of dried hollow fiber with selective permeability |
JPS55122010A (en) * | 1979-03-12 | 1980-09-19 | Kuraray Co Ltd | Preparation of hollow ethylene-vinyl alcohol compolymer membrane |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63175116A (en) * | 1987-01-08 | 1988-07-19 | Mitsubishi Kasei Corp | Copolyamide-imide hollow yarn and production thereof |
JP2002143654A (en) * | 2000-11-08 | 2002-05-21 | Kuraray Co Ltd | Hollow fiber membrane and its manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPS6227163B2 (en) | 1987-06-12 |
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