ELECTRET ARTICLE HAVING HETEROATOMS AND LOW FLUOROSATURATION RATIO
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United States of America Patent
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app pub date -
Jun 7, 2007
filing date -
May 2, 2005
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Abstract
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has an atomic percent fluorine of greater than about 40%. The inventive electret article is resistant to charge degradation upon exposure to high temperatures for prolonged time periods.
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