| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide cationic exchange resin that maintains a high exchange speed of polyvalent ions in addition to monovalent ions without agglomeration occurring in spite of surface coating even when mixed bed ion-exchange resin is used. <P>SOLUTION: The cationic exchange resin is modified with a water-soluble cationic polymer electrolyte, which has an intramolecular cyclic quaternary ammonium salt structure in the molecule. Further, a mixed bed ion-exchange resin contains cationic exchange resin and anionic exchange resin. <P>COPYRIGHT: (C)2013,JPO&INPIT |
