US Patent Issued to Eastman Chemical on Jan. 27 for "Recycle content cyclobutane diol polyester" (Texas, Tennessee Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,590, issued on Jan. 27, was assigned to Eastman Chemical Co. (Kingsport, Tenn.).

"Recycle content cyclobutane diol polyester" was invented by David Eugene Slivensky (Tatum, Texas), Kenny Randolph Parker (Afton, Tenn.), William Lewis Trapp (Kingsport, Tenn.), Daryl Bitting (Longview, Texas), Michael Gary Polasek (Longview, Texas) and Xianchun Wu (Longview, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described is a process for preparing a recycle content polyester, the process comprising obtaining a recycled propylene composition derived from cracking a recycle content pyrolysis oil composition made from a waste plastic-containing stream, usi...