In this invention a new form of polytetrafluoroethylene has been found to be compression moldable to provide strong molded articles. It is also useful as an additive or strength binder. The new form is a compression molding powder comprised of comminuted, sheared particles of expanded porous polytetrafluoroethylene,...http://www.google.co.uk/patents/US5658960?utm_source=gb-gplus-sharePatent US5658960 - Polytetrafluoroethylene molding resin and processes
