US Patent Issued to CHINA PETROLEUM & CHEMICAL, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC on June 17 for "Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,246, issued on June 17, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC (Shanghai).

"Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof" was invented by Zhiqing Su (Shanghai), Yingcheng Li (Shanghai), Yanmin Xia (Shanghai), Hui Sun (Shanghai), Hui Xu (Shanghai), Yixing Zhu (Shanghai) and Lan Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof are provided. The surfactant has an acrylamide ...