Porous composite membrane and process
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United States of America Patent
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May 13, 1997
Issued Date -
N/A
app pub date -
Oct 19, 1995
filing date -
Jul 28, 1994
priority date (Note) -
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Abstract
A composite porous membrane is provided which comprises a porous membrane substrate having an average pore size between 0.01 and 10 microns formed of a first polymer which is coated over its entire surface with a crosslinked second polymer. The second polymer is dissolved in a solvent with a free radical polymerization initiator in the absence of a crosslinking agent. The second polymer is crosslinked in situ and rendered insoluble by mild heating and/or exposure to ultraviolet light.
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