Process for preparing protein non-adsorptive microporous polysulfone membranes
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United States of America Patent
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Mar 17, 1992
Grant Date -
N/A
app pub date -
Jan 28, 1991
filing date -
Jan 28, 1991
priority date (Note) -
Expired
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Abstract
Microporous polysulfone membranes can be prepared by using a particular combination of casting solution and precipitation solution formulations, and casting conditions. The casting solution comprises polysulfone and a protein non-adsorptive prepolymer and the precipitation solution comprises a polymerization catalyst. Both hollow fiber and flat membranes can be prepared in this manner. The membranes are substantially protein non-adsorptive and have valuable physical characteristics including increased strength and high flux.
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