Process for preparing polytetrafluoroethylene granular powder.

摘要

A process for preparing a polytetrafluoroethylene granular powder which comprises agitating primary particles of a finely divided polytetrafluoroethylene ponder having an average particle size of not more than 600 mu m in an aqueous medium containing no organic liquid to form agglomerates while crushing the agglomerates in an apparatus having an agitating mechanism of the aqueous medium and a crushing mechanism of the agglomerates within a temperature range of 60 DEG to 100 DEG C. According to the present invention, the polytetrafluoroethylene granular powder having the very excellent powder flowability can be obtained without using the organic liquid which is expensive and whose use is restricted.