Tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer having an increased melting temperature

A process is provided comprising melt fabricating tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer characterized by an MFR of no greater than 10 g/10 min and PPVE content of no greater than 5 wt% in to a final-shape article and heat aging said article at a temperature of at least 295 DEG C...

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Bibliographische Detailangaben
1. Verfasser:	BURCH HEIDI ELIZABETH
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A process is provided comprising melt fabricating tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer characterized by an MFR of no greater than 10 g/10 min and PPVE content of no greater than 5 wt% in to a final-shape article and heat aging said article at a temperature of at least 295 DEG C to increase the melting temperature of said tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer by at least 6 DEG C.