US Patent Issued to LG CHEM on Dec. 9 for "Method of preparing graft copolymer and graft copolymer prepared by the same" (South Korean Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,276, issued on Dec. 9, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Method of preparing graft copolymer and graft copolymer prepared by the same" was invented by Tae Young Jeon (Daejeon, South Korea), Joo Byung Chai (Daejeon, South Korea), Yu Sung Jung (Daejeon, South Korea), Jong Beom Kim (Daejeon, South Korea) and In Seok Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a method of preparing a graft copolymer and a graft copolymer, the method including: batch-adding a first molecular weight controlling agent, a diene-based rubber polymer, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer ...