Patent ID: 7972533

Claim:
A waterborne corrosion resistant primer composition, consisting of: a waterborne resin system; a curing agent selected from the group consisting of a waterborne amine, a water-reducible modified amine, polyamidoamine adducts having amine value between 300-450 and a hydrophobic curing agent for enhanced water and corrosion resistance; and, a non-chromate containing corrosion inhibiting additive, wherein the non-chromate corrosion inhibiting additive consists of an anodic corrosion inhibitor and a cathodic corrosion inhibitor; and a metal complexing agent selected from the group consisting of water soluble organic acid salts, water soluble inorganic acid salts, citrate, gluconate, polyphosphate, tartrate, β-diketonates, {acute over (α)}-hydroxy acids, D-fructose, L-sorbose and mixtures thereof, wherein the metal complexing agent increases the solubility of the anodic and cathodic corrosion inhibitors and the metal complexing agent is present in an amount of between 0.1 to 1.0 with respect to the mole fraction of the combined anodic and cathodic corrosion inhibitor.