| abstract |
(57) [Problem] To efficiently remove an alkali metal halide and a polymerization solvent from a reaction product without causing clogging of a filter cloth or the like, and to separate an aromatic polyether polymer. hand, Provided is an industrially easy method for producing an aromatic polyether-based polymer. SOLUTION: At least one dihydric phenol and a dihalobenzenoid compound and / or at least one halophenol are polycondensed in an aromatic sulfone solvent in the presence of at least one basic alkali metal compound. Then, after pelletizing the reaction product, an aromatic polyether characterized by extracting and removing an alkali metal halide and an aromatic sulfone solvent generated by water and an organic solvent in a pellet state, and separating a polymer. A method for producing a polymer. |