DISPERSIBLE PARTICLES OF PERFLUOROSULFONIC ACID IONOMER

PFSA ionomer particles having a BET surface area of at least 0.1 g/m2 are described. The PFSA ionomer comprises (i) divalent units derived from tetrafluoroethene (TFE) and represented by formula -[CF2-CF2]- and (ii) divalent units represented by formula (I), (I) wherein a represents 0 or 1, b is an...

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Bibliographische Detailangaben
Hauptverfasser:	STEININGER, Corina, DUCHESNE, Denis, THALER, Arne, DAHLKE, Gregg D, HINTZER, Klaus, ZENTIS, Fee, CHEN, Lisa P, MUGGLI, Mark W
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:	PFSA ionomer particles having a BET surface area of at least 0.1 g/m2 are described. The PFSA ionomer comprises (i) divalent units derived from tetrafluoroethene (TFE) and represented by formula -[CF2-CF2]- and (ii) divalent units represented by formula (I), (I) wherein a represents 0 or 1, b is an integer from 2 to 8, c is an integer from 0 to 2, and e is an integer from 1 to 8 and X represents an OH group or a group OZ wherein O is an oxygen anion and Z represents a counter cation other than a hydrogen cation. Methods of making such particles as well as dispersions and compositions containing such particles are also described.