Process for drying water-wet polycarbonate membranes
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United States of America Patent
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-
Jul 4, 1989
Grant Date -
N/A
app pub date -
May 10, 1988
filing date -
May 10, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a process for drying water-wet polycarbonate membranes by contacting the membrane with a pretreatment fluid containing at least one C.sub.1-4 alcohol to remove residual solvent and non-solvent and/or tighten the membrane discriminating layer, followed by drying the membrane with air or an inert gas to evaporate the alcohol and/or water.
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