Method of crystallizing tetrabromobisphenol A

摘要

A method of crystallizing tetrabromobisphenol A is described, which comprises continuously and simultaneously feeding a methanolic tetrabromobisphenol A solution and water separately to a first crystallizer to obtain a slurry in which a part of the tetrabromobisphenol A is crystallized and continuously and simultaneously feeding said slurry and water separately to a second crystallizer to crystallize substantially the whole amount of the tetrabromophisphenol A.