US Patent Issued to BASF on Dec. 2 for "Process for preparing cyclic carbonates with an exocyclic vinylidene group" (German, Dutch Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,243, issued on Dec. 2, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).

"Process for preparing cyclic carbonates with an exocyclic vinylidene group" was invented by Thomas Schaub (Ludwigshafen, Germany), Peter Rudolf (Ludwigshafen, Germany), Ulrike Licht (Ludwigshafen, Germany), A. Stephen K. Hashmi (Heidelberg, Germany), Saumya Dabral (SN Heerenveen, Netherlands) and Chloe Johnson (Heidelberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process can be used for preparing cyclic carbonates with an exocyclic vinylidene group by reacting a propargylic alcohol with CO2 in the presence of a silver catalyst having at least one bulky l...