Oily mist resistant electret filter media and method for filtering
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United States of America Patent
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May 2, 1995
Issued Date -
N/A
app pub date -
Jul 13, 1994
filing date -
Mar 26, 1993
priority date (Note) -
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Abstract
An oily mist resistant electret filter media is provided. The filter media includes polypropylene electret fibers and a melt processable fluorochemical additive. The additive has a melt temperature of at least 25.degree. C. and a molecular weight of about 500 to 2500. Also provided is a method for filtering particulate material from air containing oily aerosol particles.
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