Patent ID: 6281281
Filing Date: 2001-08-28
Classification: C08J

Abstract:
A process for preparing a filler-containing polytetrafluoroethylene granular powder for use of molding by granulating polytetrafluoroethylene powder and a filler, said process comprising the steps of:first 100 parts by weight of a mixture of the polytetrafluoroethylene powder and the filler are wetted before granulation, with 30 to 60 parts by weight of an aqueous solution containing an anionic surfactant in a concentration of not less than 10 times and less than 40 times the critical micelle concentration in a granulator,then the wetted mixture is granulated by applying a mechanical force to prepare a wetted granular powder having spherical particles andthe wetted granular powder is taken out from the granulator.