Composites and composite membranes

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation

Reexamination Certificate

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Details

C429S314000, C429S317000, C204S296000, C204S520000, C204S522000, C204S537000, C204S539000, C204S630000, C204S631000

Reexamination Certificate

active

07049020

ABSTRACT:
The invention relates to a composite or a composite membrane consisting of an ionomer and of an inorganic optionally functionalized phyllosilicate. The isomer can be: (a) a cation exchange polymer; (b) an anion exchange polymer; (c) a polymer containing both anion exchanger groupings as well as cation exchanger groupings on the polymer chain; or (d) a blend consisting of (a) and (b), whereby the mixture ratio can range from 100% (a) to 100% (b). The blend can be ionically and even covalently cross-linked. The inorganic constituents can be selected from the group consisting of phyllosilicates or tectosilicates.

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Alberti, Giulio and Casciola, Mario, “Inorganic and Inorgano-Organic Membranes with Proton Conduction For Electrochemical Sensors and for Fuel Cells Operating At Medium Temperature” Department of Chemistry, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy, pp. 235-238.
P.L. Antonucci, A.S. Arico, P. Creti, E. Ramunni and V. Antonucci “Direct Electrochemical Oxidation of Methanol and Ethanol in Solid Polymer Fuel Cell Based On a Composite Electrolyte Membrane” University of Reggio Calabria, Faculty of Engineering, Localita Feo de Vito, 89100 Reggio Calabria, Italy. pp. 187-188.
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Prof. Dr. Rolf Mulhaupt, Universitat Freiburg, Kunststoff-Nanocomposite (Teil 1), pp. 26-32.

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