Poly-Cycloaliphatic Amine Adduct PCF-62 (Low-Blush, Low-Yellowness)

Blushing (also called amine blush or carbamation) occurs when low-molecular-weight amine hardener migrates to the surface and reacts with atmospheric CO2 and moisture to form an amine carbamate layer. This layer appears as a white haze, greasy film or loss of gloss and prevents intercoat adhesion. PCF-62 uses a cycloaliphatic polyamine adduct structure with reduced amine mobility and lower vapor pressure, significantly limiting surface migration and blush formation even in humid outdoor conditions.