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...http://www.google.com/patents/US7579409?utm_source=gb-gplus-sharePatent US7579409 - Polyetrafluoroethylene micropowder compositions
