US Patent Issued to LG CHEM on Sept. 29 for "Method for preparing vinyl chloride-based polymer and vinyl chloride-based polymer prepared thereby" (South Korean Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,309, issued on Sept. 29, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Method for preparing vinyl chloride-based polymer and vinyl chloride-based polymer prepared thereby" was invented by Jae Hyun Park (Daejeon, South Korea), Joong Chul Lim (Daejeon, South Korea), Keun Hoon Yoo (Daejeon, South Korea), Hyun Min Lee (Daejeon, South Korea) and Gyu Sun Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for preparing a vinyl chloride-based polymer showing improved melting rate and mechanical properties and low harmfulness, by pre-mixing and injecting a mixed dispersant comprising poly...