METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE PARTICLES

Provided is a method for producing a polytetrafluoroethylene particle, comprising subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of polytetrafluoroethylene, washing and then crushing the suspension-polymerized particle or...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAMOTO, Masayoshi, YOSHIDA, Hirotoshi, KUSUNOKI, Takeki, YAMANAKA, Taku, YAMABE, Takuya, TANAKA, Takayuki, TAIRA, Takahiro, KATO, Taketo, MINAMIYAMA, Tomoki, TSUKAMOTO, Mitsuo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Provided is a method for producing a polytetrafluoroethylene particle, comprising subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of polytetrafluoroethylene, washing and then crushing the suspension-polymerized particle or crushing the suspension-polymerized particle with washing to prepare a crushed particle, dehydrating the crushed particle to prepare a crushed particle having a water content of 40% by mass or less, and subjecting the dehydrated crushed particle to heat treatment to produce a polytetrafluoroethylene particle.