Method of manufacture of a water-permeable-hydrophobic membrane
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United States of America Patent
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Jun 7, 1983
Issued Date -
N/A
app pub date -
Sep 10, 1981
filing date -
Jun 24, 1980
priority date (Note) -
Expired
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Abstract
A method of making a hydrophobic membrane comprising stabilizing a hydrophobic latex binder by admixture with a fugitive, heat decomposable, hydrophilic surfactant which upon heating yields a hydrophobic residue; applying the latex thus stabilized to a hydrophobic web or substrate of non-woven fibers and then heating the coated web to decompose the surfactant to provide a dry hydrophobic web containing the hydrophobic residue of the surfactant.
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