Method for industrially producing cyclic alkylene carbonate

Abstract

The method for industrially producing a cyclic alkylene carbonate comprises: a first distillation and separation step of continuously introducing a crude cyclic alkylene carbonate into a low-boiling separation column A, and continuously withdrawing a column top component (At) through the column top and a column bottom component (Ab) containing a cyclic alkylene carbonate through the column bottom in the low-boiling separation column A; and a second distillation and separation step of continuously introducing the column bottom component (Ab) obtained in the first step into a cyclic alkylene carbonate purification column B having a side outlet, and continuously withdrawing three components of a column top component (Bt) through the column top, a side cut component (Bs) through the side outlet, and a column bottom component (Bb) through the column bottom in the purification column B, wherein the side cut component (Bs) is a cyclic alkylene carbonate with electronic grade specifications.

Dependencies are inferred from the claim text.