Ion-conducting polymeric materials

H - Electricity – 01 – B

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H01B 1/12 (2006.01) B01D 71/68 (2006.01)

Patent

CA 2526857

A method of preparing a relatively stable solution and/or dispersion of an ion- conducting polymeric material, for example one comprising phenyl moieties, carbonyl and/or sulphone moieties and ether and/or thioether moieties, comprises: (a) selecting a solvent mixture comprising water and a first organic solvent in which mixture said ion-conducting polymeric material can be dissolved and/or dispersed; (b) dissolving and/or dispersing said ion- conducting polymeric material in said solvent mixture; and (c) removing greater than 80% of the total amount of said first organic solvent in said solvent mixture, thereby to leave a formulation comprising said ion-conducting polymeric material dissolved and/or dispersed in a solvent formulation comprising a major amount of water.

L'invention concerne une méthode de préparation d'une solution et/ou d'une dispersion relativement stable d'un matériau polymérique conducteur d'ions, par exemple un matériau comprenant des groupes fonctionnels phényle, des groupes fonctionnels carbonyle et/ou sulfone et/ou des groupes fonctionnels thioéther. La méthode consiste à: a) choisir un mélange de solvants comprenant de l'eau et un premier solvant organique, le matériau polymérique conducteur d'ions pouvant être dissous et/ou dispersé dans ledit mélange; b) dissoudre et/ou disperser le matériau polymérique conducteur d'ions présent dans le mélange de solvants; et c) éliminer plus de 80 % de la quantité totale dudit premier solvant organique présent dans le mélange de solvants, afin d'obtenir une formulation comprenant ledit matériau polymérique conducteur d'ions dissous et/ou dispersé dans une formulation de solvants comprenant une quantité principale d'eau.

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