ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,562, issued on March 18, was assigned to SK Innovation Co. Ltd. (Seoul, South Korea) and SK Geo Centric Co. Ltd. (Seoul, South Korea).
"Method for producing ethylene-acrylic acid copolymer" was invented by Sang Ha Son (Daejeon, South Korea), Wan Ju Jeong (Daejeon, South Korea) and Doh Yeon Park (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing an ethylene-acrylic acid copolymer may minimize the neck-in phenomenon of the strand by discharging the copolymer strand by controlling the discharging temperature of the produced copolymer to be 200 to 300deg C., has excellent workability, processability, and moldabi...