Process for the preparation of high density anion exchange resin

Details Process for the preparation of high density anion exchange resin Process for the preparation of high density anion exchange resin

1979-06-15

1981-07-21

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

C08F 822, B01D 1504, C22B 308, B01J 108

Patent

active

042800030

ABSTRACT:
The preparation of anion exchange resins having high density and capacity by bromination of particles of crosslinked vinylaromatic copolymers is described. The process is characterized in that particles of crosslinked vinyltoluene copolymers which have been swollen in a solvent are dibrominated using bromine or a bromine-releasing agent, and the brominated particles are then aminated. The product resins can be used for the extraction of metals, particularly uranium, from solutions such as ore leaching liquor.

REFERENCES:
patent: 2632000 (1953-03-01), McMaster et al.
patent: 2632001 (1953-03-01), McMaster et al.
patent: 2788331 (1957-04-01), Greer
765,165 Application 2 or A Patent-South Africa, Aug. 22, 1977-B. R. Green.

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