US Patent Issued to HEFEI UNIVERSITY OF TECHNOLOGY, ANQING POLYROCKS TECHNOLOGY RESEARCH on March 4 for "Highly alkali-stable cationic polymers and their preparation methods and applications" (Chinese Inventors)

ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,924, issued on March 4, was assigned to HEFEI UNIVERSITY OF TECHNOLOGY (China) and ANQING POLYROCKS TECHNOLOGY RESEARCH Co. LTD. (China).

"Highly alkali-stable cationic polymers and their preparation methods and applications" was invented by Haibing Wei (Hefei, China), Tao Wang (Hefei, China), Hongfang Zhu (Anqing, China), Yatao Liang (Anqing, China), Ming Xu (Hefei, China), Duoying Chen (Hefei, China) and Yunsheng Ding (Hefei, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a preparation method of highly alkali-stable cationic polymers, including the following steps: placing a polymerization mixture comprising 1...