Baker Hughes Oilfield Operations LLC

Corby A Roberts

Jerry J Weers

Sankaran Murugesan

Xiaofeng Wang

Analette Carrasco

Catherine C Blackwell

Douglas Nugent

A method for direct synthesis of cyclic carbonates is achieved by reacting at least one epoxide with carbon dioxide in the presence of a choline catalyst, such as choline chloride, under mild conditions such as a temperature between about 25° C. to 150° C. and a pressure of from about atmospheric to 75 psi (0.52 MPa), in a cyclic carbonate solvent. The choline catalyst may be the only catalyst used, and a co-catalyst or hydrogen bond donor is not necessary. The concentration of choline catalyst in the solvent ranges from about 0.5 mol % to about 10 mol %, based on the epoxide.

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League City, TX, United States of America

Corby A Roberts