Traditional water-borne urethane dispersions perform poorly in direct-to-metal applications due to film formation issues and the hydrophilic/acidic nature of the dispersants. Polyamide- based urethane dispersions have significantly higher corrosion resistance and can provide single coat solutions with corrosion resistance and other protective features. Polyurethanes are segmented polymeric materials with alternating hard and soft segments. Although the industry uses many different isocyanates in high volumes, there are only a few major polyol types: polyesters, polyethers and polycarbonates. However, a new family of polyols for polyurethane systems - polyamides [1] - have a combination of properties not seen in standard ...