ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,812, issued on March 24, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Method for preparing acrylic acid" was invented by Byeong Gil Lyu (Daejeon, South Korea), Mi Kyung Kim (Daejeon, South Korea), Eun Kyo Kim (Daejeon, South Korea) and Hye Bin Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for preparing an acrylic acid including: supplying a lactic acid aqueous solution to a reactor and performing a dehydration reaction to prepare a reaction product including an acrylic acid; supplying a reactor discharge stream including the reaction product to a first cooling tower and supplying an upper disch...