METHOD OF PRODUCTION OF CARBONIC ACID ESTER Russian patent published in 2006 - IPC C07C68/04 C07C69/96 C07C68/06 

FIELD: chemical industry; methods of production of carbonic acid ester.

SUBSTANCE: the present invention is pertaining to the field of chemical industry, in particular, to the method of production of carbonic acid ester from the organometallic compound and carbon dioxide. The carbonic acid ester is used as the additive for the different purposes: as the alkylating agent or the carbonylation agent, the dissolvent in the field of synthesis of the organic compounds, in the capacity of the electrolyte or as the source material for production of the lubricating oil or the reducing agent. The invention presents the method of production of the carbonic acid ester providing for: (1) realization of the reaction between the organometallic compound having the metal-oxygen-carbon binding and carbon dioxide with production of the reaction mixture containing the carbonic acid ester formed as the result of the reaction; (2) extraction of the carbonic acid ester from the indicated reaction mixture with production of the residual liquid; and (3) Injection of the indicated residual liquid in the interaction with the first alcohol with formation at least one containing the metal-oxygen-carbon binding organometallic compound, where at least one indicated organometallic compound produced at the stage (3) is recuperated for its recycling into the phase (1).At that the indicated organometallic compound used at the stage (1) includes at least one compound pointed in the materials of the patent application. The technical result of the invention consists in production of the carbonic acid ester with the high yield and in the reactivation of the organometallic compound.

EFFECT: the invention ensures production of the carbonic acid ester with the high yield and the possibility of reactivation of the organometallic compound.

27 cl, 14 ex, 5 dwg, 2 tbl