Membrane

Details Membrane Membrane

C - Chemistry, Metallurgy

08

G

182/13, 402/320,

C08G 75/23 (2006.01) B01D 67/00 (2006.01) B01D 71/52 (2006.01) B01D 71/68 (2006.01) C08G 65/48 (2006.01) C08J 5/22 (2006.01)

Patent

CA 1269485

Abstract "MEMBRANE" In a sulphonated aromatic polymer contains repeating units (Ar-Y) (where Y is SO2 and/or CO), at least half of groups Ar contain a group SO3 M and M is 1/m of a polyvalent metal cation in at least 80% of such groups SO3 M. The polyvalent cation compound is formed by heating the corresponding sulphonic acid or monovalent cation compound with a salt of a polyvalent metal. The polymer is useful as a membane and the polyvalent metal salt addition and/or the heat treatment may be applied to polymer in membrane form.

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