US Patent Issued to WANHUA CHEMICAL GROUP on March 3 for "Reaction system for preparing polymer polyol and method for preparing polymer polyol" (Chinese Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,557, issued on March 3, was assigned to WANHUA CHEMICAL GROUP Co. LTD. (Yantai, China).

"Reaction system for preparing polymer polyol and method for preparing polymer polyol" was invented by Fuguo Li (Yantai, China), Yang Liu (Yantai, China), Ming Jiang (Yantai, China), Chengqun Qin (Yantai, China) and Shiqiang Fang (Yantai, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A reaction system for preparing polymer polyol and a method for preparing polymer polyol. The reaction system comprises a reactor, a first circulation unit, a second circulation unit, and a flow direction switching unit, wherein the reaction cavity of the reactor is divided in...