US Patent Issued to Jilin University on Oct. 20 for "Recycling method of waste polystyrene" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,777, issued on Oct. 20, was assigned to Jilin University (Changchun City, China).

"Recycling method of waste polystyrene" was invented by Yan Gao (Changchun City, China), Jialin Guo (Changchun City, China) and Xuejun Cui (Changchun City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a recycling method of waste polystyrene. In the recycling method, the waste polystyrene is subjected to first swelling and dissolving in water at 140deg C. to 300deg C. The waste polystyrene may swell and depolymerize in water at 140deg C. to 300deg C.; meanwhile, the waste polystyrene could self stretch and depolymerize chain segments thereof at 140de...