ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,918, issued on Sept. 16, was assigned to JILIN UNIVERSITY (Changchun, China).

"Polyvinyl alcohol-based degradable plastic, preparation method therefor and application thereof, and recycling method therefor" was invented by Junqi Sun (Jilin, China), Xu Fang (Jilin, China) and Yixuan Li (Jilin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed in the present invention are a polyvinyl alcohol (PVA)-based degradable plastic, a preparation method therefor and application thereof, and a recycling method therefor. The preparation method comprises the following steps: a PVA solution is subjected to a chemical grafting reaction under an acidic ...