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PPG Patents Corrosion Resistance Coating

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

U.S. 8,231,970 B2
PPG Industries has received a patent for a substrate comprised of aluminum at least partially coated with a primer coating comprised of a thermoset film-forming resin comprised of a polyamine and an epoxy functional polymer; and magnesium oxide particles having a surface area of at least 10 square meters per gram and an average particle size of no more than 50 nanometers; wherein the magnesium oxide particles are dispersed in the thermoset film-forming resin.

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