US Patent Issued to PPG Industries Ohio on July 14 for "Multi-layer coatings and methods of preparing the same" (Pennsylvania Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,824, issued on July 14, was assigned to PPG Industries Ohio Inc. (Cleveland).

"Multi-layer coatings and methods of preparing the same" was invented by Wei Wang (Allison Park, Pa.), David Robert Fenn (Allison Park, Pa.) and Leigh Ann Humbert (Pittsburgh).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-layer coating system includes: a first basecoat layer formed from a first coating composition including a free polyisocyanate having a weight average molecular weight of less than 600 g/mol and hydroxyl functional polymeric core-shell particles, where an amount of free polyisocyanate having a weight average molecular weight of less than 600 g/mol ...