AROMATIC-HETEROCYCLIC RING MELT ADDITIVES
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United States of America Patent
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Issued Date -
Dec 22, 2022
app pub date -
Dec 1, 2020
filing date -
Dec 1, 2020
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Abstract
Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted benzothiazole compounds or substituted benzoxazole compounds. The substituent groups may be hydroxyl, mercapto, or aromatic groups. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
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