About |
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Partially hydrolysed grade Mowiol® and Kuraray Poval® are the trade name of the polyvinyl alcohols marketed by Kuraray. These are manufactured from polyvinyl acetate by alcoholysis using a continuous process. By varying the degree of polymerization of the polyvinyl acetate and its degree of hydrolysis (saponification), a number of different grades can be supplied. Our PVOH types are offered in a high standard purity showing especially “low ash and VOC contents”.&& |
Product Description | |
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Supplier | Kuraray |
Generic | PVOH |
Material Status | Commercial: Active |
Features | Biodegradable,Good bond,Block resin,Water soluble,Good coloring |
Availabilitys | North America,Asia Pacific,Europe |
Technical Data | |||
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PHYSICAL | Nominal value | Unit | Test method |
Apparent density | 0.40 to 0.60 | g/cm³ | DIN 53466 |
Solution viscosity | 13 to 17 | mPa·s | DIN 53015 |
PH value | 4.5 to 7.0 | DIN 19261 | |
Ash Content | < 0.50 | % | |
Ester content | 180 to 220 | mg KOH/g | DIN 53401 |
Supplementary information | Nominal value | Unit | Test method |
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Degree of Hydrolysis | 79 to 84 | % | |
Residual Acetyl Content | 15 to 17 | % | |
nonvolatile content | 95 | % | DIN 53189 |
Methanol extractable | < 3.0 | % |
Notes |
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1. Typical properties: these are not to be construed as specifications. |
2. 4 % aqueous solution at 20 °C |
3. Calculated as Na2O |
4. 4 % solution in distilled water |
5. Saponification |
6. After 3 hours’ drying at 105 °C |
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