US Patent Issued to SHENZHEN CAPCHEM TECHNOLOGY on Sept. 16 for "Method for improving ultra-violet light transmittance of ethylene glycol" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,768, issued on Sept. 16, was assigned to SHENZHEN CAPCHEM TECHNOLOGY Co. LTD. (Shenzhen, China).

"Method for improving ultra-violet light transmittance of ethylene glycol" was invented by Wenhao Qiu (Shenzhen, China), Yang Guo (Shenzhen, China), Bangying Wang (Shenzhen, China) and Shuhua Zeng (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a method for improving ultra-violet light transmittance of ethylene glycol, which includes the following steps: (1) subjecting ethylene glycol, a catalyst and water to a hydrolysis reaction at 120deg C.-150deg C.; and (2) adding a stabilizer into a product of the hyd...