Process for the preparation of 2-oxo-1,3-dioxolanes

Details Process for the preparation of 2-oxo-1,3-dioxolanes Process for the preparation of 2-oxo-1,3-dioxolanes

C - Chemistry, Metallurgy

07

C

402/175, 260/352

C07C 317/36 (2006.01) C07D 317/36 (2006.01) C08G 18/44 (2006.01)

Patent

CA 1335736

A process for the preparation of 2-oxo-1,3-dioxolanes by reaction of epoxides with carbon dioxide in the presence of alkali iodides wherein at least one epoxy compound is reacted in the presence or absence of inert solvent either with a combination of A) at least one alkali iodide and B) at least one compound of the group a) polyol and b) an ether or polyether or, if the epoxy compound already has the structural features of the compounds Ba) and Bb), with the alkali iodide A) alone, at temperatures from 40 to 180°C while introducing carbon dioxide at normal pressure or at slightly increased pressure, to form the corresponding organic carbonates. The 2-oxo-1,3-dioxol- anes obtained are used for the preparation of synthetic resins, containing urethane groups, in the form of coatings or molded bodies.

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