Weak Ion Exchange Resins

Our ion exchange resins (IERs) demonstrate excellent performance, superior physical and chemical properties, and lot-to-lot reproducibility for lab and industrial separation, extraction, and purification applications.

Weakly acidic cation exchange resins are IERs that have carboxylic acid groups as ion-exchange groups, as Figs 1 and 2. DIAION™ WK10, made from methacrylic acid, and DIAION™ WK40, made from acrylic acid, are in this grouping.  Available products are WK10, WK11, WK40, WK60L WK100, and WT01S.

The IERs with primary, secondary, and tertiary amine groups as active functional groups show weak basicity, so they are called weakly basic anion exchange resins (WBAERs). There are several types of WBAERs: one with only one kind of amine groups and the other with more than two kinds of amine groups.  The products available are WA10 (acrylic acid type with tertiary amine groups), WA20, WA21J (mixtures of primary and secondary amine groups), and WA30 (tertiary amine groups).