Supported microporous membrane
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United States of America Patent
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Dec 27, 1994
Issued Date -
N/A
app pub date -
Jun 25, 1993
filing date -
May 18, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Microporous membranes having supporting structures are disclosed. A microporous filtration membrane made of a polymeric material has an integral support, both the support and the membrane having substantially identical chemical composition. Preferred supported membranes of the present invention are made of polyvinylidene fluoride. At least part of the support is bonded to the surrounding microporous membrane to provide rigidity and chemical inertness. Methods of forming the supported microporous membranes are described, including a method that results in microporous membranes having unique structural and functional characteristics.
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