Table 3.
Formulation of the waterborne polyurethane coating (hardener).
| Function | Material | wt. % |
|---|---|---|
| Curing agent | Bayhydur XP 2655 | 75.0 |
| Solvent | Dowanol PGDA | 25.0 |
| Surfactant | LDBS | 0.0–1.5 |
| Total | 100.0 |
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