| 20090118530 | Industrial Process for Production of Aromatic Carbonate - It is an object of the present invention to provide a specific process that enables an aromatic carbonate required for producing a high-quality high-performance aromatic polycarbonate to be produced industrially in a large amount (e.g. not less than 1 ton/hr) stably for a prolonged period of time (e.g. not less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours) from a cyclic carbonate and an aromatic monohydroxy compound. When producing an aromatic carbonate from a cyclic carbonate and an aromatic monohydroxy compound, the above object can be attained by carrying out a step of: (I) producing a dialkyl carbonate and a diol using a reactive distillation column having a specified structure, and (II) producing the an aromatic carbonate using a first reactive distillation column having a specified structure. | 05-07-2009 |
