US Patent Issued to WANHUA CHEMICAL GROUP, WANHUA CHEMICAL (NINGBO), WANHUA CHEMICAL (GUANGDONG) on Feb. 18 for "Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,227,610, issued on Feb. 18, was assigned to WANHUA CHEMICAL GROUP Co. LTD. (Shandong, China), WANHUA CHEMICAL (NINGBO) Co. LTD. (Zhejiang, China) and WANHUA CHEMICAL (GUANGDONG) Co. LTD. (Guangdong, China).

"Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof" was invented by Zefeng Song (Shandong, China), Yongjian Sun (Shandong, China), Xueshun Ji (Shandong, China), Huiliang Li (Shandong, China), Yancheng Zhang (Shandong, China) and Yuanyong Wang (Shandong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aqueous dispersion comprising polyurethane or polyurethane-urea, a preparation method th...