RECOVERY OF PERFORMANCE OF FFCONTAINING CATION EXCHANGE RESIN MEMBRANE FOR ALKALI ELECTROLYSIS

摘要

PURPOSE:To recover almost almost completely the voltage and current efficiency of a Fcontg. carboxylic acid type cation exchange membrane having specified ion exchange group in electrolysis of an aq. soln. of alkali chloride by converting the above exchange group into -COOR (R: H or 1 - 5 C alkyl) and heat treating the membrane.