Hydrophilic microporous polyolefin membrane
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United States of America Patent
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May 11, 1993
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N/A
app pub date -
Apr 24, 1992
filing date -
Apr 24, 1992
priority date (Note) -
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Abstract
A hydrophilic microporous membrane, is provided comprising a hydrophobic membrane substrate exemplified by a polyolefin or partially fluorinated polyolefin membrane. A process is also provided for preparing a hydrophilic membrane by grafting a water soluble polymer to the hydrophobic membrane substrate surface by irradiation means, e.g., ultraviolet irradiation. The invention further concerns a method for making the membrane and process means for filtering a fluid through such membrane.
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