Ion-exchange Polymer Or Process Of Preparing Patents (Class 521/25)
Process of regenerating (Class 521/26)
Membrane or process of preparing (Class 521/27)
Previously formed solid ion-exchange polymer admixed with nonreactive material or ion-exchange polymer (Class 521/28)
Polymer characterized by defined size or shape other than bead or pearl (Class 521/29)
Chemically treated solid polymer (Class 521/30)
From ethylenically unsaturated reactant only (Class 521/38)
From aldehyde or derivative (Class 521/39)
  • Anion-exchange resins
    Patent number: 4107098
    Abstract: Strong base, anion-exchange resins in which an imidazole compound is utilized as a source of the anion-exchange groups. The imidazole compound is utilized as or through the reaction product thereof with an epoxy compound.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: August 15, 1978
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Noriyoshi Tamura, Kunio Kihara