Process for continuous production of polyarylene sulfide
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United States of America Patent
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Apr 11, 2006
Grant Date -
May 20, 2004
app pub date -
Mar 15, 2002
filing date -
Mar 30, 2001
priority date (Note) -
Expired
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Abstract
There is disclosed a process for continuously producing a polyarylene sulfide which comprises reacting a sulfur source with a dihalogenated aromatic compound in an aprotic organic solvent, characterized by maintaining the content of the dihalogenated aromatic compound in the polymerization liquid after the substantial completion of the polymerization reaction at 5 mg/g or higher. It is made possible by the process according to the present invention to efficiently produce the polyarylene sulfide which has a high molecular weight and is excellent in thermal stability.
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