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
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 title abstract 3
- 229920002554 vinyl polymer Polymers 0.000 title abstract 3
- 239000012510 hollow fiber Substances 0.000 title abstract 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 title 1
- 239000000835 fiber Substances 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000021736 acetylation Effects 0.000 abstract 2
- 238000006640 acetylation reaction Methods 0.000 abstract 2
- 230000015271 coagulation Effects 0.000 abstract 2
- 238000005345 coagulation Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 1
- 239000011354 acetal resin Substances 0.000 abstract 1
- 150000001241 acetals Chemical class 0.000 abstract 1
- 238000004070 electrodeposition Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229920006324 polyoxymethylene Polymers 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000000108 ultra-filtration Methods 0.000 abstract 1
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 |
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