| abstract |
The present invention is a special process for the purification of dialkyl carbonates. More particularly, the present invention relates to a continuous process for purifying a dialkyl carbonate / alcohol mixture in the production of lower dialkyl carbonate by catalyzed transesterification of a cyclic alkylene carbonate (e.g., ethylene or propylene carbonate) with lower alcohols. In order to optimize the economy and energy efficiency of the process, a device for intermediate heating of the apparatus-internal liquid flow is used. |