Method for making reinforced ion exchange membranes

Details Method for making reinforced ion exchange membranes Method for making reinforced ion exchange membranes

1993-12-14

1995-09-05

Kim, John

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

1563086, 1563093, 210490, 21050036, 427244, 427245, 427370, 428421, 428422, 521 25, 521 27, B01D 6912, B01D 7132, C08J 522, B32B 2700

Patent

active

054476364

ABSTRACT:
A method for making a composite fluorinated ion exchange membrane is provided comprising applying a continuous fluorinated ion exchange polymer film to a porous reinforcing substrate, preferably made from a polyolefin such as linear high density polyethylene. The composite membrane is made by applying a solvent to the surface of the film and/or the substrate and then affixing the reinforcing substrate. These reinforced membranes may advantageously be used as separators in fuel cells, and as selective barriers in permeation separation and facilitated transport operations.

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