Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1998-04-30
1999-10-19
Therkorn, Ernest G.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210656, 2101982, 2105021, B01D 1508
Patent
active
059683635
ABSTRACT:
In accordance with the present invention, an improved bifunctional cation-exchange composition has been formed which comprises synthetic resin support particles and both crown ether and non-crown ether functional groups attached thereto. The compositions of the present invention provide for novel, enhanced cation separation capabilities and, depending upon the type of functional groups employed, permit effective separation of cations which elute at approximately the same time off standard and commonly used cation-exchange columns. The presently described bifunctional cation-exchange compositions also permit the effective separation of one cation from a mixture comprising another cation that is present at a significantly greater concentration. Formed articles and methods employing the bifunctional cation-exchange composition are also provided.
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Jagodzinski Jacek
Pohl Christopher
Rey Maria
Riviello John
Brezner David J.
Dionex Corporation
Therkorn Ernest G.
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