Method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride

摘要

An object of the present invention is to provide a method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride which can stably achieve a high degree of dehydration. In the method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride of the present invention, 1,2,4,5-cyclohexanetetracarboxylic acid is subjected to a dehydration reaction in a slurry state in the presence of a dehydrating agent, In the method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride, 1,2,4,5-cyclohexanetetracarboxylic acid is divided or continuously supplied to a dehydrating agent. It is characterized by.