Production process for polyarylene sulfide
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 13, 2003
Grant Date -
Feb 14, 2002
app pub date -
Jul 2, 2001
filing date -
Jul 7, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Provided is a production process for polyarylene sulfide having a high molecular weight and an excellent heat stability. It is a production process for polyarylene sulfide by reacting a dihalogenoaromatic compound with metal sulfide in a polar solvent, wherein all or a part of water required for the reaction is added on a condition that the reaction system is 100.degree. C. or higher, whereby obtained is polyarylene sulfide which is reduced in an intrinsic viscosity [.eta.] by 0.05 deciliter/g or less at 206.degree. C. when added to an N-methyl-2-pyrrolidone solvent is the polyarylene sulfide of an amount equivalent to the solvent and it is maintained at 265.degree. C. for 8 hours.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully