Methods of reducing thermo-oxidation of polymers such as polyacrylonitrile
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United States of America Patent
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Apr 13, 2010
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app pub date -
Jun 11, 2003
filing date -
Jun 11, 2002
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Abstract
A filter comprising a polymer material comprising a polymer matrix such as polyacrylonitrile containing dispersed metal oxide particles. The metal oxide particles are for example ferric oxide particles, and the polymer material contains generally 0.25-3% by weight of these particles. The filters are resistant to thermo-oxidation and have reduced shrinkage or degradation.
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