US Patent Issued to Asahi Kasei on Feb. 4 for "Conjugated diene-based polymer, branching agent, production method for conjugated diene-based polymer, oil extended conjugated diene-based polymer, rubber composition, and tire" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,179, issued on Feb. 4, was assigned to Asahi Kasei K.K. (Tokyo).

"Conjugated diene-based polymer, branching agent, production method for conjugated diene-based polymer, oil extended conjugated diene-based polymer, rubber composition, and tire" was invented by Shogo Sumitani (Tokyo), Kenta Hisamura (Tokyo), Shinichi Sekikawa (Tokyo), Miki Kyo (Tokyo) and Shuri Tobo (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A conjugated diene-based polymer of the present invention has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more, has a change (triangleT) of an oxidation onset temperature caused t...