Preparation of urethane and carbonate products

Details Preparation of urethane and carbonate products Preparation of urethane and carbonate products

C - Chemistry, Metallurgy

07

C

C07C 271/12 (2006.01) C07C 269/04 (2006.01) C07C 271/20 (2006.01)

Patent

CA 2076951

07-21(849)A ABSTRACT The present invention provides a process for preparing urethanes and carbonates from an amine or an alcohol, carbon dioxide and a hydrocarbyl halide. The amine or alcohol is reacted with carbon dioxide in a suitable solvent system and in the presence of an amidine or guanidine base, to form the ammonium carbamate or carbonate salt which is then reacted in a polar aprotic solvent with a hydrocarbyl halide. Polymer products can also be prepared utilizing this process or utilizing the resulting urethanes and carbonates under standard polymerization conditions.

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