ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,490, issued on May 27, was assigned to Akzo Nobel Coatings International B.V. (Amsterdam).
"Waterborne, UV curable coating composition for easy-clean coatings" was invented by Zheng Shi (Shanghai), Quan James Huang (Zhejiang, China), Puxin Fang (Zhejiang, China), Hong Lin (Guangdong, China) and Junbiao Lu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to the synthesis of a carboxyl-functional, unsaturated polyurethane containing a perfluoropolyether block, which can be used as an easy clean additive in preparation of a waterborne, UV curable coating composition. The polyurethane can be prepared by a method comprising ...