Moulding composition for producing bipolar plates

Details Moulding composition for producing bipolar plates Moulding composition for producing bipolar plates

C - Chemistry, Metallurgy

08

G

C08G 59/40 (2006.01) C08G 59/50 (2006.01) C08G 59/58 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2445721

Compositions comprising (a) an epoxy resin, (b) a hardener for the epoxy resin, (c) a product of the reaction of a microgel containing carboxylic acid groups and a nitrogen-containing base, and (d) an electrically conducting filler combination comprising, based on the total amount of filler, at least 75% by weight of graphite, are particularly suitable for producing bipolar plates.

Cette invention se rapporte à des compositions comprenant: (a) une résine époxyde, (b) un agent de durcissement pour cette résine époxyde, (c) un produit résultant de la réaction d'un microgel contenant des groupes d'acide carboxylique et d'une base comprenant de l'azote, et (d) une combinaison de charges électroconductrices contenant, sur la base de la quantité totale de charge, au moins 75 % en poids de graphite. Ces compositions sont particulièrement appropriées pour la production de plaques bipolaires.

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