Abstract: A new low VOC coating composition includes an aliphatic polyisocyanate based on isophorone diisocyanate and hexamethylene diisocyanatepolyacrylate; a solvent-free, low viscosity aliphatic polyisocyanate resin based on hexamethylene diisocyanate; and a catalyst. Optionally, the composition further optionally contains a defoamer, a liquid rheology additive, micro spheres and pigments.

Abstract: A method of protecting surfaces from corrosion calls for providing a coating material containing polyisocyanates with unreacted, active NCO groups; and applying the coating material to a rust covered surface, whereby the free NCO groups in the coating material react with the moisture in the rust to dehydrate the rust and produce a strong coating which keeps out water and oxygen which corrode surfaces. The active NCO content is about 3% to about 20% NCO groups. Also disclosed is a composition for coating an iron surface, the composition comprising polyisocyanates whose NCO content is between 5% and 30%; and aluminum flakes at about 5% to about 50% by weight.