CONTINUOUS MANUFACTURE OF ALLYL DIGLYCOL CARBONATE

摘要

-I- A continuous process for the manufacture of allyl diglycol carbonate (ADC) from diethylene glycol bis-chloro-formate (Bis CF), allyl alcohol (AA) and alkali metal hydroxide produces a pure product of good quality, high yields and high throughput per unit volume of the reactor, The invention allows the recycle of an aqueous alcohol waste solution in a concentration below the azeotropic point by simple distillation by employing a more concentrated alkali metal hydroxide and an allyl allele aqueous solution. The process comprises at least two reaction zones, a continuous physical separation zone for separating the high purity product and a distillation column for reclaiming the aqueous allyl alcohol solution below the azeotropic concentration.