Method for producing aromatic polyether, and potassium carbonate used in same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsKoichi SUGA, Minoru SENGA, Hiromu KUMAGAI, Yuko MURAKAMI
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Abstract
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 (m2/g) of the potassium carbonate satisfy D/S≤600.
Claims6
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 (m2/g) of the potassium carbonate satisfy D/S≤600.
A potassium carbonate to be used for producing an aromatic polyether by reacting 4,4′-dichlorobenzophenone and hydroquinone, which satisfies 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 (m2/g) of the potassium carbonate satisfy D/S≤600.
Dependencies are inferred from the claim text.