High performance ion exchange composition and the removal and se

Details High performance ion exchange composition and the removal and se High performance ion exchange composition and the removal and se

1979-05-25

1981-02-24

Cintins, Ivars C.

Liquid purification or separation

Processes

Chromatography

210685, 210686, B01D 1508

Patent

active

042526442

ABSTRACT:
An ion exchange composition comprising an insoluble substrate of a synthetic resin having ion exchanging sites at least on its available surface; and a finely divided, insoluble material comprising synthetic resin particles of from about 0.1 to about 5 microns median diameter (with respect to volume) having, at least on their outer surfaces, ion exchanging sites which attract the ion exchanging sites of the substrate, irreversibly attached as a monolayer to the available surface of the substrate. The composition is used for removal and separatin of ions, and is especially useful in liquid ion exchange chromatography. For example, a chromatographic separation of halide ions is effected with high speed and resolution by contacting an aqueous solution thereof with a bed of the ion exchange composition which consists of surface sulfonated resin beads of a styrene-divinylbenzene copolymer to the surface of which is irreversibly attached a monolayer of quaternary ammonium styrene-divinylbenzene copolymer resin particles in the hydroxy form, and then eluting the bed with an aqueous sodium hydroxide solution.

REFERENCES:
patent: 3485658 (1969-12-01), Iler
patent: 3488922 (1970-01-01), Kirkland

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