US Patent Issued to Tianjin University on Aug. 26 for "Pretreatment process of resin catalyst for synthesizing bisphenol A" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,287, issued on Aug. 26, was assigned to Tianjin University (Tianjin, China).

"Pretreatment process of resin catalyst for synthesizing bisphenol A" was invented by Minhua Zhang (Tianjin, China), He Dong (Tianjin, China), Hao Gong (Tianjin, China), Guochao Yang (Tianjin, China) and Yingzhe Yu (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a pretreatment process for a resin catalyst for synthesizing bisphenol A. The pretreatment process includes the following steps: firstly, purging the resin catalyst with gas, to remove residual liquid in the resin catalyst; secondly, allowing the vented resin catalyst to be in contac...