US Patent Issued to SK CHEMICALS on April 15 for "Polyester resin using recycled bis(2-hydroxyethyl) terephthalate and article including same" (South Korean Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,826, issued on April 15, was assigned to SK CHEMICALS Co. LTD. (Gyeonggi-do, South Korea).

"Polyester resin using recycled bis(2-hydroxyethyl) terephthalate and article including same" was invented by Da-Young Hwang (Gyeonggi-do, South Korea), Ji-Hun Kim (Gyeonggi-do, South Korea), Kwang-Woo Park (Gyeonggi-do, South Korea), Yoo Jin Lee (Gyeonggi-do, South Korea) and Joong Ki Lee (Gyeonggi-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "This polyester resin comprises a bis(2-hydroxyethyl)terephthalate monomer which is obtained by depolymerization of waste polyester and which has a diethylene glycol ester content adjusted to be a certain...