DIAION™ ion exchange resins

DIAION™ products are high-quality ion exchange resins, chelating resins, and synthetic adsorbents produced by Mitsubishi Chemical Corporation and its subsidiary producers. According to Mitsubishi Chemical’s experience in ion exchange resin manufacture for over 70 years, DIAION™ resins are well production-controlled and have excellent properties for various applications.

Ion exchange resins are classified as follows based on their chemical structures or functionalities.

Type Base Functional group Matrix
Strongly Acidic Cation Exchange Resin Styrenic Sulfonic acid Gel / Porous / Highly porous
Weakly Acidic Cation Exchange Resin Acrylic
Acrylic acid
Methacrylic acid
Gel / Porous / Highly porous
Strongly Basic Anion Exchange Resin Styrenic Quaternary ammonium
(Type I and Type II)
Gel / Porous / Highly porous
Weakly Basic Anion Exchange Resin Styrenic
Tertiary amine
Porous / Highly porous
Chelating Resins Special ligands Highly porous

Types of DIAION™ ion exchange resins

GEL type ion exchange resins are most commonly used and have a homogeneous matrix structure inside the beads. This type of matrix gives so-called micropores that are formed by the polymeric networks. Water and solute species diffuse into and out from the bead through the micropores.

Porous resins have rather large pores as well as micropores. The large pores (macropores) give improved diffusion of solutes inside beads.

Highly Porous resins have more enhanced macroporosity. Resins of this type can be used for the processing of large molecules or can be used in non-aqueous media.

Types of DIAION™ ion exchange resins