Idemitsu Kosan Company, Limited

Yuko Murakami

Minoru Senga

Koichi Suga

Hiromu Kumagai

Kouichi Suga

Provided is a method for producing an aromatic polyether, comprising reacting 4,4'-dichlorobenzophenone and hydroquinone in the presence of a potassium carbonate satisfying at least one of the following conditions (A) and (B): (A) the potassium carbonate has a bulk density of 1.2 g/ml or less; and (B) an average particle diameter D (μm) and a specific surface area S (m/g) of the potassium carbonate satisfy D/S≤600.

Method for producing aromatic polyether, and potassium carbonate used in same

Provided is a polyether ether ketone, comprising a repeating unit represented by the following formula (1), the polyether ether ketone having a crystallization temperature Tc of 255° C. or more, and satisfying one or both of the following conditions (A) and (B): (A) a fluorine atom content a is less than 2 mg/kg; and (B) a chlorine atom content b is 2 mg/kg or more.

Polyether ether ketone and method for producing polyether ether ketone

Provided is a polyether ether ketone, comprising a repeating unit represented by the following formula (1), satisfying one or both of the following conditions (A) and (B), and having a hydroxy group at one terminal or both terminals of a main chain of the polyether ether ketone: (A) a fluorine atom content a is less than 2 mg/kg; and (B) a chlorine atom content b is 2 mg/kg or more.

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Ichihara, Japan

Yuko Murakami