Polyetrafluoroethylene micropowder compositions
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United States of America Patent
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Aug 25, 2009
Grant Date -
May 3, 2007
app pub date -
Oct 27, 2005
filing date -
Oct 27, 2005
priority date (Note) -
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Abstract
A micropowder composition containing a granular PTFE micropowder, a fine powder PTFE micropowder, and a fine powder molding resin provides mixtures with fluoroelastomers containing copolymerized and alternating units of tetrafluoroethylene and propylene that provide molded articles having improved surface smoothness characteristics and tear resistance on molding. Processes for mixing additives with fluoroelastomers by adding or mixing the fluoroelastomer with the additives in the presence of micropowder PTFE compositions.
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