公开(公告)号：US20240026077A1

公开(公告)日：2024-01-25

申请号：US18024250

申请日：2021-09-02

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Koichi SUGA ,  Minoru SENGA ,  Hiromu KUMAGAI ,  Yuko MURAKAMI

IPC: C08G65/40 ,  C08K7/06 ,  C08K7/14 ,  C08J5/18

CPC classification number: C08G65/4012 ,  C08K7/06 ,  C08K7/14 ,  C08J5/18 ,  C08G2650/40 ,  C08J2371/10

Abstract: 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.

公开(公告)号：US20230029776A1

公开(公告)日：2023-02-02

申请号：US17782991

申请日：2020-12-10

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Minoru SENGA ,  Kouichi SUGA ,  Yuko MURAKAMI

IPC: C08K7/14

Abstract: An aromatic polyether including structural units represented by the following formulas (1A) to (4A):

公开(公告)号：US20230265245A1

公开(公告)日：2023-08-24

申请号：US18024231

申请日：2021-09-02

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Koichi SUGA ,  Minoru SENGA ,  Hiromu KUMAGAI ,  Yuko MURAKAMI

IPC: C08G65/40

CPC classification number: C08G65/4087

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.

公开(公告)号：US20230265244A1

公开(公告)日：2023-08-24

申请号：US18024240

申请日：2021-09-02

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Koichi SUGA ,  Minoru SENGA ,  Hiromu KUMAGAI ,  Yuko MURAKAMI

IPC: C08G65/40

CPC classification number: C08G65/4012 ,  C08G65/4093

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.