Process for removal of diol as impurity in cyclic carbonic...

Details Process for removal of diol as impurity in cyclic carbonic... Process for removal of diol as impurity in cyclic carbonic...

C - Chemistry, Metallurgy

07

D

C07D 317/36 (2006.01) C07D 317/38 (2006.01) C07D 319/06 (2006.01) H01G 9/035 (2006.01) H01M 6/14 (2006.01)

Patent

CA 2173065

A process for removing a diol from a cyclic carbonic acid ester containing the diol as an impurity, which comprises bringing a cyclic carbonic acid ester containing a diol as an impurity into contact with a synthetic zeolite in the presence of a chain carbonic acid ester. According to this process, there can be obtained a mixture of a cyclic carbonic acid ester and a chain carbonic acid ester having a very small content of diol, which is suitable as a solvent for electrolytic solution of a condenser, cell or battery.

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