JPS5668104A - Production of hollow fiber made of polyvinyl acetal - Google Patents
Production of hollow fiber made of polyvinyl acetalInfo
- Publication number
- JPS5668104A JPS5668104A JP14345479A JP14345479A JPS5668104A JP S5668104 A JPS5668104 A JP S5668104A JP 14345479 A JP14345479 A JP 14345479A JP 14345479 A JP14345479 A JP 14345479A JP S5668104 A JPS5668104 A JP S5668104A
- Authority
- JP
- Japan
- Prior art keywords
- dope
- polyvinyl acetal
- solvent
- fibers
- extruded
- 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 dope containing a polyvinyl alcohol resin with a specific acetylation degree is extruded through annular nozzles and coagulated under specified conditions to produce the titled fiber suitably used as an ultrafiltration memberane for recovery of electrocoating paints because of its high flux and strength.
CONSTITUTION: A polyvinyl acetal resin with an acetylation degree of higher than 40mol% is dissolved in a solvent such as dimethylsulfoxide to prepare a dope of 10W30% polymer concentration and 1W1,000 poise viscosity. The dope is extruded through annular nozzles using a solvent that can coagulate polyvinyl acetal and is compatible with the dope solvent such as water as the core liquid and coagulation bath to form fibers, which are washed with water to produce the objective holow fibers. After coagulation, moisture-heat treatment of the hollow fibers is preferred at 40W70°C.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14345479A JPS5668104A (en) | 1979-11-05 | 1979-11-05 | Production of hollow fiber made of polyvinyl acetal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14345479A JPS5668104A (en) | 1979-11-05 | 1979-11-05 | Production of hollow fiber made of polyvinyl acetal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5668104A true JPS5668104A (en) | 1981-06-08 |
Family
ID=15339072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14345479A Pending JPS5668104A (en) | 1979-11-05 | 1979-11-05 | Production of hollow fiber made of polyvinyl acetal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5668104A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014036938A (en) * | 2012-08-20 | 2014-02-27 | Sekisui Chem Co Ltd | Method for producing polymer water processing film |
-
1979
- 1979-11-05 JP JP14345479A patent/JPS5668104A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014036938A (en) * | 2012-08-20 | 2014-02-27 | Sekisui Chem Co Ltd | Method for producing polymer water processing film |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3930105A (en) | Hollow fibres | |
JPS54145379A (en) | Aromatic polysulfone hollow fiber semipermeable membrane | |
JPS56307A (en) | Hollow membrane of high polymer, its production and nozzle for producing the same | |
JPS57167414A (en) | Production of polyimide hollow fiber | |
ATE31248T1 (en) | MEMBRANE AND PROCESS OF PRODUCTION. | |
JPS56148907A (en) | Hollow fiber | |
JPS5668104A (en) | Production of hollow fiber made of polyvinyl acetal | |
JPS5782515A (en) | Hollow fibrous membrane and its preparation | |
JPS5599934A (en) | Preparation of porous vinylidene fluoride resin membrane | |
JPS5653207A (en) | Production of aromatic polyamide fiber | |
JPS55155704A (en) | Hollow semipermeable membrane and its production | |
JPS6452814A (en) | Polysulfone hollow fiber membrane and production thereof | |
JPS57133211A (en) | Production of hollow fiber of cellulose ester | |
JPS55112310A (en) | Production of acrylonitrile hollow fiber | |
JPS5530427A (en) | Production of hollow fiber | |
JPS57143510A (en) | Production of high-flux hollow fiber regenerated from cuprammonium cellulose | |
JPS5643416A (en) | Production of hollow fiber | |
JPS5670805A (en) | Preparation of selectively permeable membrane for treating organic liquid | |
JPS5378323A (en) | Production of hollow acrylonitrile fibers | |
JPS5771411A (en) | Preparation of hollow fiber | |
JPS5477715A (en) | Production of polycarbonate hollow fiber | |
JPS5751806A (en) | Preparation of hollow fiber | |
JPS54151616A (en) | Production of hollow fibers | |
JPS5528741A (en) | Forming method of polyvinyl alcohol hollow yarn film | |
JPS54151574A (en) | Manufacture of acrylonitrile hollow fiber |