US Patent Issued to ZHEJIANG UNIVERSITY on June 24 for "Method for recycling and reusing polyurethane foam" (Chinese Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,329, issued on June 24, was assigned to ZHEJIANG UNIVERSITY (Hangzhou, China).

"Method for recycling and reusing polyurethane foam" was invented by Tao Xie (Hangzhou, China), Ning Zheng (Hangzhou, China), Zenghe Liu (Hangzhou, China), Zizheng Fang (Hangzhou, China) and Qian Zhao (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention discloses a method for recycling and reusing polyurethane foam. The method includes: (1) The functionalized oligomers are obtained by adding solvent and catalyst to the polyurethane foam. (2) The functionalized oligomers are chemically modified, and the photosensitive group is introduced through th...