Sulfonated polyarylene compounds, membrane material made therefrom, method for the production thereof and use
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United States of America Patent
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Apr 24, 2012
Grant Date -
Jul 14, 2011
app pub date -
Jul 13, 2007
filing date -
Jul 28, 2006
priority date (Note) -
Expired
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Abstract
The invention relates to the field of polymer chemistry and relates to sulfonated polyarylene compounds such as can be used for example in ion exchange membranes in fuel cells, as well as a method for the production thereof and the use thereof. The object of the present invention is to disclose hydrolytically and thermally resistant sulfonated polyarylene compounds with a defined degree and position of sulfonation, from which membrane materials with an improved resistance to hydrolysis can be produced. The object is attained through sulfonated polyarylene compounds according to at least one of the general formulas (I)-(IV).
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