Composite Membranes of High Homogeneity
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United States of America Patent
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Issued Date -
Oct 30, 2008
app pub date -
Jun 30, 2008
filing date -
Sep 9, 2004
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Abandoned
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Abstract
A composite membrane comprised of ePTFE and matrix polymer, the ePTFE being made from polytetrafluoroethylene fine powder having a standard specific gravity (SSG) of no more than about 2.16, a break strength of at least about 5.5 lb force (24.5 N), and a stress relaxation time of at least about 500 sec.
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