Continuous process for the synthesis of aromatic urethanes

Details Continuous process for the synthesis of aromatic urethanes Continuous process for the synthesis of aromatic urethanes

C - Chemistry, Metallurgy

07

C

C07C 269/04 (2006.01) C07C 271/28 (2006.01)

Patent

CA 2403392

Process for the preparation of aromatic urethanes consisting in reacting organic carbonates with aromatic amines in reactors operating in continuous, feeding a total quantity of aromatic amines in a percentage, with respect to the weight of the total mixture, ranging from 4 to 30, and maintening a low concentration of amine in the reactor.

L'invention concerne un procédé de préparation d'uréthanes aromatiques, consistant à faire réagir des carbonates organiques avec des amines aromatiques dans des réacteurs fonctionnant en continu, à alimenter une quantité totale d'amines aromatiques comprise entre 4 et 30 % en masse du mélange total et à maintenir une faible concentration d'amines dans le réacteur.

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