发明名称 |
Process for producing polyarylene sulfide |
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.
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申请公布号 |
US2005215759(A1) |
申请公布日期 |
2005.09.29 |
申请号 |
US20050520620 |
申请日期 |
2005.01.10 |
申请人 |
MATSUZAKI MITSUHIRO;KAGOSHIMA MASARU |
发明人 |
MATSUZAKI MITSUHIRO;KAGOSHIMA MASARU |
分类号 |
C08G75/02;(IPC1-7):C08G75/00 |
主分类号 |
C08G75/02 |
代理机构 |
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代理人 |
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地址 |
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