The Waterborne Symposium

Novel polyamide-polyurethane polymers have recently been introduced to the market for use as protective metal topcoats, to offer high hardness, chemical resistance and durability.  This work expands on that concept to create direct-to-metal capable polyamide-polyurethane coatings by addressing the challenges of film formation, adhesion, and polymer/pigment interactions. Performance capabilities were evaluated through electrochemical impedance spectroscopy/physical testing and benchmarked against an array of high-performance chemistries.