Method for manufacturing anion exchange resin, anion exchange resin, method for manufacturing cation exchange resin, cation exchange resin, mixed bed resin, and method for manufacturing ultrapure water for washing electronic component material

摘要

This invention relates to a method for manufacturing a cation exchange resin, wherein the method includes the steps of: copolymerizing a monovinyl aromatic monomer and a cross-linkable aromatic monomer to obtain a cross-linked copolymer; specifying a content of a leachable compound represented by formula (I) to be 400 μg or less relative to 1 g of the cross-linked copolymer,; wherein Z represents a hydrogen atom or an alkyl group, and l represents a natural number; and then sulfonating the cross-linked copolymer to form a sulfonylated cross-linked copolymer.