Eastman Chemical Company
THERMOSETTING COATING COMPOSITION FOR IMPROVED CORROSION PROTECTION OF METAL SUBSTRATES

Abstract:

Disclosed is a composition for improving the corrosion resistance of metals coated with 2K coatings. The composition comprises a polyol resin having a sulfonyl isocyanate grafted onto the resin. The polyol resins are polyester polyols and acrylic polyols. The grafted resins significantly improve metal corrosion resistance on smooth metal substrates when the grafted resins are incorporated into 2K coating systems.