Patent ID: 9745433
Date: 2017-08-29
CPC Classifications: B01D,B01J,C08G,C08J

Claim:
1. An ion exchange membrane, comprising a reaction product of a polymer and a cross-linking agent, wherein the polymer comprises a first repeat unit and a second repeat unit, wherein the first repeat unit is the second repeat unit is wherein R + is A − is F − , Cl − , Br − , I − , OH − , HCO 3 − , HSO 4 − , SbF 6 − , BF 4 − , H 2 PO 4 − , H 2 PO 3 − , or H 2 PO 2 − ; X is CH 2 i Y CH 2 j , i and j is independently an integer from 1 to 6, Y is —O—, —S—, —CH 2 —, or —NH—; R 1 is independently C 1-8 alkyl group; and, R 2 and R 3 are independently hydrogen, or C 1-8 alkyl group; and, the cross-linking agent is a compound having at least two imide groups.