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PVP/VA W-635 by Ashland is a linear, random vinylpyrrolidone/vinyl acetate copolymer. It is produced by the free-radical polymerization. It offers transparency, flexibility, oxygen permeability, adhesion to glass, plastics and metals. PVP/VA W-635 is used in remoistenable, spray adhesives and hot-melt adhesives for diaper wetness indicator systems.
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PVP/VA W-635 properties
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| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Ash Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Cloud Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Color, APHA | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Glass Transition Temperature (Tg) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| K-value | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Moisture Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
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| Nitrogen Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Saponification Value | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Solid Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Specific Gravity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Vinylpyrrolidone Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Solubility Properties | Element | Condition | Method |
|---|---|---|---|
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| Insoluble in | Visible After Login | ||
| Soluble in | Visible After Login | ||
| Soluble in | Visible After Login | ||
| Insoluble in | Visible After Login |