Cleaning methods of making poly (arylene sulfide), and purification method of the organic solvent used for washing

摘要

In the method for producing polyarylene sulfide, place the washing step of washing with an organic solvent polymer was separated from the reaction mixture to the polymerization step after containing the product polymer, which was purified organic solvent after the washing step, it was collected, and mixed method for producing a poly (arylene sulfide) comprising a purification step to reduce the content of the alkaline compound, the steps comprising a step of recycling the cleaning process of the poly (arylene sulfide) an organic solvent and purified.