Title:
POLY(ARYLENE SULFIDE) RESIN MANUFACTURING PROCESS, PRODUCT THEREOF, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/021816
Kind Code:
A1
Abstract:
Disclosed are a poly(arylene sulfide) manufacturing process, a product thereof, and an application thereof. The manufacturing process uses a sulfur source and a dichloroaromatic compound as raw materials, utilizes an organic amide solvent, and performs a series of processes for preparation, including dehydration, pre-polymerization, polymerization, flash evaporation, post-treatment, etc. The invention creatively adds sodium chloride seed crystals into a reaction liquid during the pre-polymerization stage, and adds a filtration processing step for the reaction liquid after the pre-polymerization reaction ends. The use of the manufacturing process allows for greatly reducing the salt content of a prepared poly(arylene sulfide) resin crude product, greatly reducing the amount of high-salt wastewater generated, reducing water consumption and energy consumption, and helping to efficiently prepare a high-molecular-weight poly(arylene sulfide) resin; more importantly, the process is not only suitable as an intermittent process, but is likewise suited for continuous production, and is expected to greatly increase the production efficiency of the production system, reduce production costs and be more environmentally-friendly and green.
Inventors:
CHEN ZHIRONG (CN)
YIN HONG (CN)
JIA YANYU (CN)
ZHANG XIONGWEI (CN)
LIAN MING (CN)
CHEN XING (CN)
JIANG JIE (CN)
LI WOYUAN (CN)
YIN HONG (CN)
JIA YANYU (CN)
ZHANG XIONGWEI (CN)
LIAN MING (CN)
CHEN XING (CN)
JIANG JIE (CN)
LI WOYUAN (CN)
Application Number:
PCT/CN2023/096116
Publication Date:
February 01, 2024
Filing Date:
May 24, 2023
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
ZHEJIANG NHU SPECIAL MAT CO LTD (CN)
ZHEJIANG NHU CO LTD (CN)
ZHEJIANG NHU SPECIAL MAT CO LTD (CN)
ZHEJIANG NHU CO LTD (CN)
International Classes:
C08G75/0259
Foreign References:
| CN115260496A | 2022-11-01 | |||
| JP2005344045A | 2005-12-15 | |||
| JP2005344045A | 2005-12-15 | |||
| CN102105512A | 2011-06-22 | |||
| CN112574414A | 2021-03-30 | |||
| JP2020070445A | 2020-05-07 | |||
| US4794164A | 1988-12-27 |
Attorney, Agent or Firm:
HANGZHOU ZHIXIAN PATENT AGENCY (CN)
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