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US 9,006,333 B2Granted
Method for manufacturing fine polytetrafluoroethylene powder
AssigneeDaikin Industries, Ltd.
InventorsMasayoshi Miyamoto, Taku Yamanaka, Yasuhiko Sawada, Masayuki Tsuji
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Abstract
A method for manufacturing a polytetrafluoroethylene fine powder characterized by including the steps of (1) preparing an aqueous dispersion containing polytetrafluoroethylene, water, and a surfactant (A); (2) coagulating the polytetrafluoroethylene in the aqueous dispersion by agitating the aqueous dispersion with a discharge flow-type impeller; (3) collecting a wet powder of the polytetrafluoroethylene; and (4) drying the wet powder of the polytetrafluoroethylene.
Claims3
A method for manufacturing a polytetrafluoroethylene fine powder,
- the method comprising the steps of:
- (1) preparing an aqueous dispersion comprising polytetrafluoroethylene, water, and a surfactant (A);
- (2) coagulating the polytetrafluoroethylene in the aqueous dispersion by agitating the aqueous dispersion with a discharge flow-type impeller;
- (3) collecting a wet powder of the polytetrafluoroethylene;
- and
- (4) drying the wet powder of the polytetrafluoroethylene.
3 more elements
Dependencies are inferred from the claim text.