Process for making a solution of perfluorosulfonated ion exchange polymers
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United States of America Patent
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Issued Date -
Aug 18, 2005
app pub date -
Nov 19, 2004
filing date -
Nov 25, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for making a solution of perfluorosulfonated ion exchange polymer is disclosed. The process involves heating a slurry containing a perfluorosulfonated ion exchange polymer resin, an organic ether compound and water in a mechanically agitated pressurized vessel to an elevated temperature, so as to totally dissolve the resin in the solution. The perfluorosulfonated ion exchange polymer solution is recovered, and the water and the organic ether compound are removed from the solution. A perfluorosulfonated ion exchange polymer resin remains, which can be coated onto a fabric, or converted into a film which can be laminated onto a fabric. The resulting fabric forms the basis for a chemical and/or biological agent barrier for use in certain types of apparel.
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