Proton-conducting polymer membrane comprising polymers...

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H01M 8/10 (2006.01) B01D 71/58 (2006.01) C08J 5/22 (2006.01) H01M 4/86 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2494330

The invention relates to proton-conducting polymer membrane comprising a polymer with phosphonic acid groups which may be obtained by a method comprising the following steps: A) mixing vinylogous phosphonic acids with one or several aromatic tetra-amino compounds with one or several aromatic carboxylic acids, the esters, the acid halides or the acid anhydrides thereof which have at least two acid groups per carboxylic acid monomer and/or mixing of vinylogous phosphonic acids with one or several aromatic and/or heteroaromatic diaminocarboxylic acids, the esters, acid halides or acid anhydrides thereof, B) heating the mixture obtained in step (A) under an inert gas to up to 350 ~C with formation of polyazol polymers, C) application of a layer to a support using the mixture from step (A) and/or (B) and D) polymerisation of the vinylogous phosphonic acid in the planar form obtained in step (C).

La présente invention concerne une membrane polymère conductrice de protons comprenant des polymères à groupes acide phosphonique. Cette membrane polymère est obtenue selon un procédé consistant A) à mélanger de l'acide phosphonique, contenant du vinyle et un ou plusieurs composés tétraamino aromatiques, avec un ou plusieurs acides carboxyliques aromatiques, leurs esters, leurs halogénures d'acide ou leurs anhydrides d'acide, qui contiennent au moins deux groupes acide par monomère d'acide carboxylique, et/ou à mélanger de l'acide phosphonique, contenant du vinyle, avec un ou plusieurs acides diaminocarboxyliques aromatiques et/ou hétéroaromatiques, leurs esters, leurs halogénures d'acide ou leurs anhydrides d'acide, B) à chauffer le mélange obtenu à l'étape A) sous gaz inerte à une température maximale de 350 ·C jusqu'à la formation de polymères de polyazoles, C) à appliquer une couche sur un support à l'aide du mélange obtenu à l'étape A) et/ou B) et D) à polymériser l'acide phosphonique, contenant du vinyle et présent dans le produit plat obtenu à l'étape C).

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