Items | Indicators |
Appearance of paint film Viscosity (coating a 4 cups) S Drying time h(160±2°C) drying ≤ Flexibility mm Impact strength kg·cm Acid price mg (KOH/g) ≤ Sulfur resistance 3% sodium sulfide reflux 2 hours |
Transparent without mechanical impurities 30-60 0.5 1 50 6 Unchanged film |