JPS5686936A - Production of polyvinyl alcohol aqueous solution - Google Patents
Production of polyvinyl alcohol aqueous solutionInfo
- Publication number
- JPS5686936A JPS5686936A JP16541579A JP16541579A JPS5686936A JP S5686936 A JPS5686936 A JP S5686936A JP 16541579 A JP16541579 A JP 16541579A JP 16541579 A JP16541579 A JP 16541579A JP S5686936 A JPS5686936 A JP S5686936A
- Authority
- JP
- Japan
- Prior art keywords
- pva
- aqueous solution
- aqueous
- inlet
- water
- 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
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: A powder of PVA is fed to a high-speed shear intermesing type double- screw extruder and water or aqueous PVA is added from two inlets in order to effect mixing, thus producting a high-quality high-concentration aqueous PVA for making films through a one-step process.
CONSTITUTION: A PVA powder without any specific processig is quantitatively fed from inlet 5 to a high-speed shear intermeshing type double-screw extruder. After the powder passes through the barrel at a constant speed, water or an aqueous solution containing less than 25wt% of PVA is added from inlet 11 with a metering device under low pressures and they are melt kneaded so that a homogeneous PVA solution contains more than 50wt% of PVA. Further, water or aqueous PVA is quantitatively added from inlet 17 and a homogeneous PVA aqueous solution is obtained from the end of the extruder. A high-quality PVA aqueous solution is continuously obtained without loss through a one-step process.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16541579A JPS601333B2 (en) | 1979-12-19 | 1979-12-19 | Method for producing polyvinyl alcohol aqueous solution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16541579A JPS601333B2 (en) | 1979-12-19 | 1979-12-19 | Method for producing polyvinyl alcohol aqueous solution |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5686936A true JPS5686936A (en) | 1981-07-15 |
JPS601333B2 JPS601333B2 (en) | 1985-01-14 |
Family
ID=15811975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16541579A Expired JPS601333B2 (en) | 1979-12-19 | 1979-12-19 | Method for producing polyvinyl alcohol aqueous solution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS601333B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6189232A (en) * | 1984-09-28 | 1986-05-07 | デーエスエム・ナムローゼ・フェンノートシャップ | Continuous production of polymer uniform solution |
-
1979
- 1979-12-19 JP JP16541579A patent/JPS601333B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6189232A (en) * | 1984-09-28 | 1986-05-07 | デーエスエム・ナムローゼ・フェンノートシャップ | Continuous production of polymer uniform solution |
Also Published As
Publication number | Publication date |
---|---|
JPS601333B2 (en) | 1985-01-14 |
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