Hydrophilic PVDF semipermeable membrane
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United States of America Patent
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Mar 7, 1989
Grant Date -
N/A
app pub date -
Jun 29, 1987
filing date -
Jun 20, 1986
priority date (Note) -
Expired
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Abstract
Hydrophilic semipermeable membranes which retain their capacity for filtration, even after drying, and which are well adapted for either ultrafiltration or microfiltration, are comprised of at least 70% by weight of polyvinylidene fluoride (PVFD) and up to 30% by weight of a hydrophilic polymer compatible therewith, e.g., a cellulose acetate or sulfonated polysulfone.
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