US Patent Issued to CHANGZHOU UNIVERSITY on Sept. 30 for "Methods for separating the binary azeotropic mixture of ethylene glycol and ethylene glycol diacetate with sulfolane entrainer" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,367, issued on Sept. 30, was assigned to CHANGZHOU UNIVERSITY (Changzhou, China).

"Methods for separating the binary azeotropic mixture of ethylene glycol and ethylene glycol diacetate with sulfolane entrainer" was invented by Jiashu Li (Changzhou, China), Jinlong Li (Changzhou, China) and Fang Wang (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method for separating ethylene glycol (EG) and ethylene glycol diacetate (EGDA) with sulfolane entrainer, including: obtaining EG and a mixture of EGDA and sulfolane through separating a mixture of EG and EGDA under an action of sulfolane by an extractive distillation tower; obtaining EGDA...