Bipolar membranes and methods of making same

Details Bipolar membranes and methods of making same Bipolar membranes and methods of making same

B - Operations, Transporting

01

D

18/13

B01D 69/02 (2006.01) B01D 61/44 (2006.01) C08J 5/22 (2006.01)

Patent

CA 1321450

ABSTRACT Bipolar membranes are disclosed which exhibit high permselectivity, good mechanical strength, ability to operate at high current density, low potential drop and long-term stability. Essential to the production of bipolar membranes with these properties is the construction of the interface layer, which includes a matrix material containing quaternary and non-quaternary amine groups and having dispersed therein a cation exchange resin. A number of additional important characteristics are disclosed directed to the construction of the anion and cation layers of the bipolar membranes. A preferred method for forming bipolar membranes by casting layers on top of one another is also disclosed.

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