ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,257, issued on Aug. 4, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Method of preparing acrylonitrile dimer" was invented by Yujin An (Daejeon, South Korea), Wonseok Kim (Daejeon, South Korea), Hyunchul Jung (Daejeon, South Korea), Sae Hume Park (Daejeon, South Korea) and Wan Kyu Oh (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a method for preparing acrylonitrile dimer including: (1) reacting acrylonitrile in the presence of a reaction solvent, a proton-donating solvent, and a phosphorus-based catalyst to prepare an acrylonitrile dimer; and (2) adding an amine-based solvent to a reactio...