TAKELAC™ WPB-341 is a water-based polyurethane resin by Mitsui Chemicals. It is non chlorine based polymer. In comparison with vinyl alcohol based resin, the humidity dependence of the oxygen barrier property is excellent. It is printable and good lamination on coating side. TAKELAC™ WPB-341 is used an oxygen barrier coat for solar cell back sheets.
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TAKELAC™ WPB-341 properties
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| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Glass Transition Temperature (Tg) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Solid Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| pH | 0.0 Visible After Login | Visible After Login | Visible After Login |