US Patent Issued to ZEON on Sept. 9 for "Metal-supported catalyst and method for producing hydrogenated conjugated-diene-based polymer" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,443, issued on Sept. 9, was assigned to ZEON Corp. (Tokyo).

"Metal-supported catalyst and method for producing hydrogenated conjugated-diene-based polymer" was invented by Yoshiki Fujimura (Tokyo), Akito Nakai (Tokyo) and Kenichiro Sumiura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A metal-supported catalyst is obtained by supporting a metal and/or a metal compound on a carrier, wherein a rate of decrease in the metal and/or the metal compound contained in the metal-supported catalyst is 20 wt % or more when the metal-supported catalyst is shaken in an aqueous solution of 2.3 wt % of polyvinylpyrrolidone in a hydrogen atmosphere at a tem...