US Patent Issued to LG CHEM on July 1 for "Block copolymer, method for preparing the same, and asphalt composition comprising the same" (South Korean Inventor)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,692, issued on July 1, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Block copolymer, method for preparing the same, and asphalt composition comprising the same" was invented by Tae Jung Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a block copolymer including an aromatic vinyl-based polymer block, a conjugated diene-based polymer block and a coupling agent linking group, wherein the conjugated diene-based polymer block includes a hydroxyl group, and the hydroxyl group content is 0.5 mol % to 12.0 mol % based on the double bond content of a conjugated diene-based monomer unit, a method for preparing the s...