Phthalic anhydride‐based cation exchange resin from N‐vinylcarbazole

Abstract
A condensation product based on phthalic anhydride and N‐vinylcarbazole has been prepared and processed into a sulfonic acid cation exchange resin. The resin produced has been characterized by measuring its total and salt splitting capacities and by studying its thermal characteristics, rate of exchange, and behavior to pH metric titration.