PROCESS FOR PRODUCING CATION EXCHANGE RESIN

摘要

A cation exchange resin is produced by (a) suspension copolymerizing a mixt. of styrene, divinylbenzene and acrylic acid, methacrylic acid and/or lower alkylester, and (b) sulphonating the copolymer particle using 95-100% H2SO4 at 50-100≰C in organic solvent swelling agent presence. The quantity of divinylbenzene is esp. 0.8-55 mol.% and that of acrylic acid is 2-20 mol.% per mol. styrene.