ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,583, issued on Feb. 24, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Method of preparing graft polymer" was invented by Jeong Su Choi (Daejeon, South Korea), Won Seok Lee (Daejeon, South Korea), Roo Da Lee (Daejeon, South Korea), Sang Hoo Park (Daejeon, South Korea) and Jong Ju Lee (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of preparing a graft polymer, which includes: adding a diene-based rubber polymer, a first monomer mixture including a (meth)acrylate-based monomer and an aromatic vinyl-based monomer, and a reactive ultraviolet (UV) stabilizer to a reactor and carrying out polymerization to p...