| abstract |
A process for producing a cation exchange resin which comprises suspension polymerizing a monomeric mixture comprising (1) styrene, (2) 0.8 to 55 mole %, per mole of styrene, of divinylbenzene and (3) 2 to 20 mole %, per mole of styrene, of acrylic or methacrylic acid and/or its lower alkyl ester, and sulfonating the resulting copolymer particles. |