Process for continuous spinning of hollow-fiber membranes using a solvent mixture as a precipitation medium
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United States of America Patent
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Sep 29, 1992
Grant Date -
N/A
app pub date -
Mar 18, 1991
filing date -
Mar 18, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Microporous hollow fiber polysulfone membranes can be prepared continuously by using a particular combination of casting solution and precipitation solution formulations, and casting conditions. The concentration of components in the precipitation solution are adjusted continuously to maintain original concentrations. The membranes are characterized by high quality, consistent performance and uniform porosity throughout the membrane.
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