US Patent Issued to CHENGDU 401 TECHNOLOGY on June 17 for "Method for preparing environmentally friendly polyamide resin" (Chinese Inventor)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,160, issued on June 17, was assigned to CHENGDU 401 TECHNOLOGY Co. LTD. (Sichuan, China).

"Method for preparing environmentally friendly polyamide resin" was invented by Yang Li (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "An environment-friendly method for preparing polyamide resin, wherein the raw materials comprise by weight 5-60 parts of dibasic acid and 3-50 parts of diamine as polymeric monomers, and by weight 10-90 parts of polyamide of a reactive dispersion system; reactively dispersing the polymeric monomers into the polyamide dispersion system in molten state, and performing a polymerization reaction to obtain the polymer produ...