ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,351, issued on Sept. 23, was assigned to SOOCHOW UNIVERSITY (Suzhou, China).

"Poly(ester amide)s and preparation method therefor" was invented by Yingfeng Tu (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed in the present invention is poly(ester amide)s and method for preparing thermoplastic poly(ester amide)s therefor. The poly(ester amide)s are prepared using diamine or alkamine as initiator, with diacid and dialcohol-based cyclicester as the monomer, in the catalyst, and by cascade polycondensation-coupling ring-opening polymerization. The obtained poly(ester amide)s have good mechanical properties, solvent resistance and ...