Process for preparing 1,4-bis(4-phenoxybenzoyl)benzene using substantially unhydrolyzed terephthaloyl chloride

摘要

A process for preparing 1,4-bis(4-phenoxybenzoyl)benzene comprising: - providing a solvent, a Lewis acid, a first reactant and a second reactant, wherein the first reactant and the second reactant are terephthaloyl chloride and diphenyl ether, respectively, or vice versa; A solution having a turbidity of less than 100 NTU is obtained 10 minutes after terephthaloyl chloride is introduced at a reference concentration of 6.5% by weight in ortho-dichlorobenzene containing less than 100 parts by weight of water at a temperature of 20° C. Purity grade, step; - mixing the first reactant in a solvent to prepare a starting mixture; and - adding a second reactant to the starting mixture, A method is disclosed, comprising the step of adding a second reactant and/or a second reactant after the Lewis acid is mixed into the starting mixture. Disclosed is a method for preparing a polyether ketone ketone polymer starting from 1,4-bis(4-phenoxybenzoyl)benzene prepared by the above method.