FLUOROPOLYMER COMPRISING PENDENT GROUPS WITH IONIC BIS(SULFONYL)IMIDE MOIETY AND PERFLUOROETHER TERMINAL GROUP

• Main Authors: YANDRASITS, Michael A, HAUG, Andrew T, LINDELL, Matthew J
• Format: Patent
• Language: English; French
• Published: 07.10.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP

A fluoropolymer is described comprising pendent groups having the formula: -(CF2)a-(OCbF2b)c-(OCeF2e)-SO2-[NX2-SO2(CF2)f-SO2]d-NX1-SO2-Rf wherein Rf is a perfluoroether and X1 and X2 are independently cationic counterions. Also described are various articles including catalyst ink, polymer electrolyte membranes, and membrane electrode assemblies comprising the fluoropolymer described herein; as well as a method of making a fluoropolymer. L'invention concerne un fluoropolymère, comprenant des groupes pendants présentant la formule : -(CF2)a-(OCbF2b)c-(OCeF2e)-SO2-[NX2-SO2(CF2)f-SO2]d-NX1-SO2-Rf, dans laquelle Rf représente un perfluoroéther et X1 et X2 représentent indépendamment des contre-ions cationiques. L'invention concerne également divers articles comprenant une encre de catalyseur, des membranes d'électrolyte polymère et des ensembles d'électrodes à membrane comprenant le fluoropolymère décrit dans la description ; ainsi qu'un procédé de préparation d'un fluoropolymère.