ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,175, issued on Aug. 5, was assigned to SHELL USA INC. (Houston).
"Process for the preparation of ethylene glycol" was invented by Koen Wolf (Amsterdam), Timothe Johannes Olthof (Amsterdam), Eugene Marie Godfried Andre Van Kruchten (Amsterdam) and Daniel Maurice Lorimer (Amsterdam).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a process for the preparation of ethylene glycol, comprising: a) converting a stream comprising ethylene oxide in the presence of a catalyst and carbon dioxide in two or more reactors to a stream comprising ethylene carbonate; and b) converting ethylene carbonate from the stream comprising ethylene carbo...