Polyether ether ketone and method for producing polyether ether ketone
AssigneeIdemitsu Kosan Co., Ltd.
InventorsKoichi SUGA, Minoru SENGA, Hiromu KUMAGAI, Yuko MURAKAMI
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Abstract
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.
Claims17
A polyether ether ketone, comprising a repeating unit represented by the following formula (1), having a crystallization temperature Tc of 270° 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.
A method for producing a polyether ether ketone, which comprises reacting 4,4′-dichlorobenzophenone and hydroquinone under a condition in which a highest temperature of a reaction mixture is 260° C. to 280° C.
(canceled)
Dependencies are inferred from the claim text.