Highly porous polyvinylidene difluoride membranes
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United States of America Patent
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Nov 14, 2000
Grant Date -
N/A
app pub date -
May 18, 1998
filing date -
Jan 22, 1997
priority date (Note) -
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Abstract
The present invention relates to the field synthetic polymeric membrane materials formed from casting polyvinylidene difluoride (PVDF) polymer solutions and/or dispersions. Membranes formed in accordance with the present invention are all highly porous. Both internally isotropic membranes and highly asymmetric PVDF membranes are disclosed. Membranes of the invention may be hydrophobic or hydrophilic. The membranes of the invention are useful in a variety of microfiltration and ultrathin applications.
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