Title:
ポリアリーレンスルフィド樹脂の製造方法
Document Type and Number:
Japanese Patent JP6866923
Kind Code:
B2
Abstract:
Provided is a method for producing a polyarylene sulfide resin that causes a polymerization reaction between a dihalo aromatic compound and a sulfidating agent in the presence of an aliphatic cyclic compound that can be ring-opened by hydrolysis, wherein corrosion of a production apparatus is suppressed and the content of production-apparatus-derived metal atoms in the resulting polyarylene sulfide resin is reduced. More specifically, provided is a method for producing a polyarylene sulfide resin having a dehydrating step (1) for obtaining a mixture by reacting a sulfidating agent containing water and an aliphatic cyclic compound that can be ring-opened by hydrolysis while dehydration is carried out at a pressure in the range of 30 [kPa abs] to atmospheric pressure until the solution temperature reaches a range of 90°C to 150°C, thereafter adding a dihalo aromatic compound, and reacting the solution while heating at a solution temperature in the range of 90°C to 170°C and dehydrating at a pressure in the range of 30 [kPa abs] to 80 [kPa abs].
Inventors:
Saori Nara
Hideki Watanabe
Masaya Kakugi
Taku Ibaraki
Satoshi Inoue
Hideki Watanabe
Masaya Kakugi
Taku Ibaraki
Satoshi Inoue
Application Number:
JP2019526915A
Publication Date:
April 28, 2021
Filing Date:
June 26, 2018
Export Citation:
Assignee:
DIC Corporation
International Classes:
C08G75/025; C08G75/0277; C08K3/013; C08L81/02
Domestic Patent References:
| JP2045531A | ||||
| JP3035023A | ||||
| JP61023627A | ||||
| JP9278888A |
Foreign References:
| WO2010058713A1 |
Attorney, Agent or Firm:
Shinji Ogawa
Akihiro Iwamoto
Takayuki Ohno
Yoshihisa Saito
Akihiro Iwamoto
Takayuki Ohno
Yoshihisa Saito