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Title:
METHOD FOR PRODUCING POLY(ARYLENE SULFIDE)
Document Type and Number:
WIPO Patent Application WO/2020/026590
Kind Code:
A1
Abstract:
The method of the present invention for producing a poly(arylene sulfide) (PAS) which has improved properties and a high nitrogen content, while reducing the formation of organic by-products, involves a plurality of reaction tanks which communicate with each other through a gas phase. The method comprises conducting a feed step, a dehydration step, a polymerization step, and a recovery step in parallel. A polar organic solvent, a sulfur source, and a dihaloaromatic compound are used as starting materials. The polar organic solvent as a starting material is fed in an amount of 5 mol or less per mol of the sulfur source as a starting material. The polar organic solvent has a bond represented by -RO-N-, where R is C or P.

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Inventors:
SUZUKI KENJI (JP)
Application Number:
PCT/JP2019/022565
Publication Date:
February 06, 2020
Filing Date:
June 06, 2019
Export Citation:
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Assignee:
KUREHA CORP (JP)
International Classes:
C08G75/025
Domestic Patent References:
WO2018135372A12018-07-26
WO2017179327A12017-10-19
WO2017057732A12017-04-06
WO2016199894A12016-12-15
WO2015152032A12015-10-08
Foreign References:
JPH07286042A1995-10-31
JP2000511960A2000-09-12
JP2008285596A2008-11-27
US20160244569A12016-08-25
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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