Patent ID: 7799939
Filing Date: 2010-09-21
Classification: C07C

Abstract:
1. In a process for continuous production of a dialkyl carbonate and a diol, by continuously feeding a first starting material containing a cyclic carbonate as a main component thereof and a second starting material containing an aliphatic monohydric alcohol as a main component thereof into a tray column type continuous multi-stage distillation column, bringing the starting materials into contact with a catalyst present in said distillation column so as to bring about reaction in a tray portion and a column bottom portion, continuously withdrawing a low boiling point component containing a produced dialkyl carbonate from an upper portion of said distillation column, and continuously withdrawing a high boiling point component containing a produced diol from a lower portion of said distillation column, wherein the improvement comprises: the following formula (1) being satisfied, wherein α=θ β=θ θ T θ T