| abstract |
The method for producing an aromatic polysulfone is a method for producing an aromatic polysulfone by a polycondensation reaction of an aromatic dihalogenated sulfone compound and an aromatic dihydroxy compound, and the polycondensation reaction is carried out in the coexistence of at least one aromatic terminal blocking agent. When the compounding amount of the aromatic dihalogenated sulfone compound is p mol, the compounding amount of the aromatic dihydroxy compound is q mol, and the compounding amount of the aromatic terminal blocking agent is r mol, The following formula (S1) and the following formula (S2) are satisfied. r/(p-q)<2(S1)p>q(S2). |