FLUORINE-CONTAINING COPOLYMER HAVING IMPROVED EXTRUDABILITY

PURPOSE:To provide a tetrafluoroethylene/hexafluoropropylene copolymer having improved rate of extrusion molding, containing specific amount of hexafluoropropylene unit, and having particular specific melt viscosity, melt flow ratio, and ZST. CONSTITUTION:The objective tetrafluoroethylene/hexafluoro...

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Bibliographische Detailangaben
Hauptverfasser: ASANO KOUZOU, ADACHI TOKIO, NAKAGAWA SHINICHI, SAKATA SHINSUKE
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To provide a tetrafluoroethylene/hexafluoropropylene copolymer having improved rate of extrusion molding, containing specific amount of hexafluoropropylene unit, and having particular specific melt viscosity, melt flow ratio, and ZST. CONSTITUTION:The objective tetrafluoroethylene/hexafluoropropylene copolymer has a hexafluoropropylene-content of 5-20wt%, a specific melt viscosity of 1- 60X10 poise at 380 deg.C, a melt flow ratio of >=3.5, and a ZST value (y, sec) satisfying the formula (x is specific melt viscosity X10) at 380 deg.C.