ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,608, issued on June 23, was assigned to ARKEMA FRANCE (Puteaux, France).
"Waterborne coating composition" was invented by Chenyan Bai (Shanghai), Yin Xue (Shanghai), Xinhong Wang (Shanghai) and Wenxin Zhang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waterborne coating composition, comprising (a) a first polyurethane dispersion comprising a first polyurethane having a Tg of 5deg C. to 20deg C., (b) a second polyurethane dispersion comprising a second polyurethane having a Tg of -40deg C. to -60deg C., and (c) a polyacrylic emulsion comprising an acrylic (co) polymer having a Tg of -40deg C. to -20deg C., is provided. A method for prep...