METHOD FOR PRODUCING POLYARYLENE SULFIDE RESIN

WIPO Patent Application WO/2019/004170

A1

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].

JPH04332732	PRODUCTION OF POLYARYLENE THIOETHER
JP6221326	A manufacturing method of ring type poly Arylene sulfide
JPH0586185	PREPARATION OF OPTIONALLY BRANCHED POLYARYLENE SULFIDE WITH HIGH MOLECULAR WEIGHT

NARA SAORI (JP)
WATANABE HIDEKI (JP)
KADOKI MASAYA (JP)
IBARAKI TAKU (JP)
INOUE SATOSHI (JP)

PCT/JP2018/024119

January 03, 2019

June 26, 2018

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DAINIPPON INK & CHEMICALS (JP)

C08G75/025; C08J3/20; C08J5/00; C08L81/02

WO2010058713A1

2010-05-27

JPH0245531A	1990-02-15
JPH0335023A	1991-02-15
JPS6123627A	1986-02-01
JPH09278888A	1997-10-28

OGAWA Shinji (JP)

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