Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1985-09-16
1988-05-31
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210681, 210687, 210688, 585820, B01D 1500, C02F 128
Patent
active
047479540
ABSTRACT:
Particles, fibers, or filaments of ethylene/carboxylic acid copolymers or terpolymers, especially in highly porous or microporous form, are employed in removing contaminants from solution in aqueous and/or organic liquids, especially metal contaminants. The porous polymers, having a surface area/weight ratio of at least about 0.5 m.sup.2 /gm, are useful alone, but may also be used in conjunction with, or in tandem with, previously known ion exchange resins such as polyacrylic acid crosslinked with divinylbenzene.
REFERENCES:
patent: 3493498 (1970-02-01), Abrams et al.
patent: 4083782 (1978-04-01), Kunin
patent: 4120653 (1978-10-01), Smolka
Dorfner, Konrad; Ion Exchangers, Properties and Applications; 1972, pp. 36-37.
Kunin, Robert; Ion Exchange Resins; 1972, pp. 47, 69, 308-315.
Guerra Rafael E.
Vaughn Walter L.
Cintins Ivars
Lee W. J.
The Dow Chemical Company
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