Anion exchanger and process for producing anion exchange...

Details Anion exchanger and process for producing anion exchange... Anion exchanger and process for producing anion exchange...

B - Operations, Transporting

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B01D 71/66 (2006.01) B01D 61/24 (2006.01) B01D 61/42 (2006.01) B01J 41/12 (2006.01) B01J 47/12 (2006.01) C08J 5/22 (2006.01) C08L 81/06 (2006.01)

Patent

CA 2396166

A process for producing an anion exchange membrane, which comprises mixing from 25 to 95 mass% of a polymer having anion exchange groups or active groups convertible to anion exchange groups (hereinafter referred to as polymer 1), and from 5 to 75 mass% of a polymer having no anion exchange groups or no active groups convertible to anion exchange groups (hereinafter referred to as polymer 2), and forming the obtained composition into a membrane, said process including a step of cross-linking an aromatic ring of a repeating unit constituting polymer 1 with an aromatic ring of another repeating unit constituting polymer 1 or with a cross-linkable site of polymer 2, and in a case where polymer 1 is a polymer having active groups convertible to anion exchange groups, a step of converting the active groups to anion exchange groups.

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