PROCESS FOR PREPARING MEMBRANES

摘要

A process for preparing an ion-exchange membrane having a textured surface profile comprising the steps (i) and (ii): (i) applying a radiation-curable composition to a membrane in a patternwise manner; and (ii) irradiating and thereby curing the radiation-curable composition present on the membrane; wherein the radiation-curable composition comprises: a)10 to 65 wt% of curable ionic compound(s) comprising one ethylenically unsaturated group; b)3 to 60 wt% of crosslinking agent(s) comprising at least two ethylenically unsaturated groups and having a number average molecular weight below 800; c)0 to 70 wt% of inert solvent(s); d)0 to 10 wt% of free-radical initiator(s);and e)0.5 to 25 wt% of thickening agent(s).