Waterborne anti-chip primer coating composition

摘要

Anti-chip primer coating compositions based upon chain extended, high molecular weight polyurethane dispersions are known in the automotive OEM industry. These anti-chip primer coating compositions are generally applied onto various locations of a vehicle. Normally, the anti-chip primer coating compositions are applied onto the leading edges of doors, fenders, hoods and on the A pillar of a vehicle prior to application of a primer-surfacer coating composition over the entire vehicle body. The anti-chip primer coating composition is typically not cured prior to application of the primer-surfacer coating composition.