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Reflective article having a sacrificial cathodic layer

United States Patent

September 12, 2017
View the Complete Patent at the US Patent & Trademark Office
The present invention relates to reflective articles, such as solar mirrors, that include a sacrificial cathodic layer. The reflective article, more particularly includes a substrate, such as glass, having a multi-layered coating thereon that includes a lead-free sacrificial cathodic layer. The sacrificial cathodic layer includes at least one transition metal, such as a particulate transition metal, which can be in the form of flakes (e.g., zinc flakes). The sacrificial cathodic layer can include an inorganic matrix formed from one or more organo-titanates. Alternatively, the sacrificial cathodic layer can include an organic polymer matrix (e.g., a crosslinked organic polymer matrix formed from an organic polymer and an aminoplast crosslinking agent). The reflective article also includes an outer organic polymer coating, that can be electrodeposited over the sacrificial cathodic layer.
Kabagambe; Benjamin (Allison Park, PA), Buchanan; Michael J. (Cranberry Township, PA), Scott; Matthew S. (Pittsburgh, PA), Rearick; Brian K. (Allison Park, PA), Medwick; Paul A. (Allison Park, PA), McCamy; James W. (Export, PA)
Vitro, S.A.B. de C.V. (Nuevo Leon, MX)
13/ 171,509
June 29, 2011
NOTICE OF GOVERNMENT SUPPORT This invention was made with Government support under Contract No. DE-FC36-08GO18033 (DOE SOLAR POWER) awarded by the Department of Energy. The United States government may have certain rights in this invention.