Process for impregnating supports
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United States of America Patent
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Sep 6, 2005
Grant Date -
Feb 20, 2003
app pub date -
Aug 9, 2002
filing date -
Aug 9, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An impregnation process of a porous support including immersing the support in an aqueous colloidal dispersion of ionomeric (per)fluorinated polymer, containing suiphonyl fluoride groups and having a concentration greater than 15% by weight, thermal treatment at 200° C. or less, conversion of the ionomer sulphonyl groups into the corresponding salts, ionomer crosslinking when ionomer equivalent weight is less than 650 g/eq.
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