Reverse-side treatment of fabric reinforced membranes

摘要

Disclosed are a sulfonyl group containing fluorocarbon polymer cation-exchange membrane which has been fabric reinforced and, on one side of which has been treated, after the fabric reinforcing has been applied in a heat-pressure application, to a depth of at least 10 microns with a primary amine or a secondary amine or mixtures thereof to aminate a majority of said sulfonyl groups.