US Patent Issued to Chevron U.S.A. on July 14 for "Circular economy for plastic waste to polyethylene and base oil via refinery hydrocracking unit" (California Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,789, issued on July 14, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Circular economy for plastic waste to polyethylene and base oil via refinery hydrocracking unit" was invented by Hye-Kyung C. Timken (Albany, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hyd...