DIAION™ ion-exchange resins
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 of over forty
years, DIAION™ reisns are well
production-controlled and have excellent properties for various
Types of DIAION™ ion-exchange resinsIon-exchage resins are classified as follows based on their chemical structures or functionalities.
|strongly acidic cation-exchange resin||styrenic||sulfonic acid||gel / porous
|weakly acidic cation-exchange resin||l>acrylic
|strongly basic antion-exchange resin||styrenic||quaternary ammonium
(type I and type II)
|gel / porous
|weakly basic antion-exchange resin||styrenic
|others (chelating resins)||special lignads||highly porous|
GEL type ion-exchange resins are most commonly used and have homogeneous matrix structure inside the beads. This type of matrix gives so-called micropores that are formed by the polymeric networks. Water and solute speices difuse 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 difusion of solutes inside beads
Highly Porous resins have more enhanced macroporosity. Resins of this type can be used for processing of large molecules or can be used in non-aqueous media.
Application of ion-exchage resinsTypical applications of ion-exchange resins are as follows:
|water treatment||softening, industrial water|
|highly pure water||ultrapure water, concentrate demineralizaiton|
|waste water||heavy metals recovery, electroplating|
|sugar refining||decolorization, demineralization, separation|
|food processing||decolorization, aminoacid purification, debittering|
|chemical process||chemicals purification, reaction catalyst|
For technical details of each application, please refer to literatures such as "DIAION™ technical brochure I & II."