Porous membrane having hydrophilic and cell growth promotions surface and process
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United States of America Patent
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Aug 6, 1991
Issued Date -
N/A
app pub date -
Sep 8, 1989
filing date -
Dec 4, 1986
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Expired
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Abstract
A composite, porous membrane is formed from a porous polymer membrane having desired bulk properties on which is directly coated a cell attachment and/or growth promoting composition and a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane. In one embodiment, when the substrate is polytetrafluoroethylene the composite is microscopically transparent.
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