DIAION® ion-exchange resins
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 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 of over forty years, DIAIONÒ reisns are well production-controlled and have excellent properties for various applications.

Blue_Bead.gif (953 ???)Types of DIAION® ion-exchange resins

Ion-exchage 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 l>acrylic
methacrylic		 acrylic acid
methacrylic acid		 porous
highly porous
strongly basic antion-exchange resin styrenic quaternary ammonium
(type I and type II)		 gel / porous
highly porous
weakly basic antion-exchange resin styrenic
acrylic		 tertiary amine
polyamine		 porous
highly porous
others (chelating resins)   special lignads highly porous

Matrix structure:

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.

Blue_Bead.gif (953 ???)  Application of ion-exchage resins


Typical applications of ion-exchange resins are as follows:

Category

Applications
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."

 

Blue_Bead.gif (953 ???)Other informations
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Last updated: 30 September 2000.  ©copyright Mitsubishi Chemical Corporation.