发明申请
- 专利标题: Process for producing polyarylene sulfide
- 专利标题(中): 生产聚芳硫醚的方法
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申请号: US10520620申请日: 2003-07-11
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公开(公告)号: US20050215759A1公开(公告)日: 2005-09-29
- 发明人: Mitsuhiro Matsuzaki , Masaru Kagoshima
- 申请人: Mitsuhiro Matsuzaki , Masaru Kagoshima
- 优先权: JP2002-209346 20020718
- 国际申请: PCT/JP03/08852 WO 20030711
- 主分类号: C08G75/02
- IPC分类号: C08G75/02 ; C08G75/00
摘要:
A process for producing polyarylene sulfide includes: steps of reacting an aromatic dihalide compound and an alkaline metal compound in a polar organic solvent for polymerization under heating and cooling a system including the reaction mixture to recover particulate polyarylene sulfide (PAS). The system after the reaction is gradually cooled at an average cooling speed of 0.2 to 1.0 deg. C./min. selectively in a temperature range of from 1 deg. C. below to 1 deg. C. above a maximum system-viscosity temperature. As a result, the process can be operated at a relatively short polymerization cycle and yet provides the product PAS particles with a high and stable bulk density as to exhibit good processability in the transportation and storage, and excellent transportability in a hopper or a screw of an extruder or a molding machine.
公开/授权文献
- US07220817B2 Process for producing polyarylene sulfide 公开/授权日:2007-05-22