Black Polytetrafluoroethylene Porous Film, Production Process for the Same, and Uses of the Same
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United States of America Patent
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Mar 17, 2016
app pub date -
Apr 24, 2014
filing date -
Apr 26, 2013
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Abstract
Provided is a black PTFE porous film which comprises a black colorant-containing PTFE nanofiber (D) containing a polytetrafluoroethylene (PTFE) nanofiber (E) and a black colorant (B) and has a value (V), as represented by a Munsell symbol in accordance with JIS Z 8721, of not more than N2.5, wherein the black colorant-containing PTFE nanofiber (D) is obtained by subjecting a spinning solution containing at least PTFE or modified PTFE (A) to an electrospinning method.
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