Title:
PRODUCTION METHOD FOR POLYARYLENE SULFIDE
Document Type and Number:
WIPO Patent Application WO/2019/167782
Kind Code:
A1
Abstract:
Provided is a method which is for producing a polyarylene sulfide (hereinafter referred to as "PAS") and in which foaming in a dehydration process can be inhibited, and the use of a high-cost material having high corrosion resistance such as Ti or Zr is not required. The production method for a PAS according to the present invention produces the PAS by polymerizing a sulfur source and a polyhaloaromatic compound in an organic polar solvent, and comprises: a homogenization step for subjecting an undehydrated sulfur source-containing mixture containing a sulfur source, an alkali metal hydroxide, an organic polar solvent, and water to heating at a temperature not lower than 25°C but not higher than the boiling point of the undehydrated sulfur source-containing mixture, and thereby homogenizing and transforming the undehydrated sulfur source-containing mixture from a non-homogeneous system in which there is a phase separation between an organic phase and an aqueous phase into a homogeneous system in which the phase separation between the organic phase and the aqueous phase has been resolved; and a dehydration step for dehydrating the undehydrated sulfur source-containing mixture to obtain a dehydrated sulfur source-containing mixture, wherein the dehydration step is performed after the homogenization step.
Inventors:
UETA OSAMU (JP)
SHOJI YASUHIRO (JP)
KAWAYAUCHI NAOTO (JP)
ISHIGAMI SHINYA (JP)
ISHII SADATOSHI (JP)
TANAKA MISATO (JP)
OHUCHI TOSHIAKI (JP)
SHOJI YASUHIRO (JP)
KAWAYAUCHI NAOTO (JP)
ISHIGAMI SHINYA (JP)
ISHII SADATOSHI (JP)
TANAKA MISATO (JP)
OHUCHI TOSHIAKI (JP)
Application Number:
PCT/JP2019/006499
Publication Date:
September 06, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
C08G75/0259
Domestic Patent References:
WO2010058713A1 | 2010-05-27 |
Foreign References:
JP2016536377A | 2016-11-24 | |||
US20160244568A1 | 2016-08-25 | |||
JP2013241590A | 2013-12-05 | |||
US5023315A | 1991-06-11 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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