Ion exchange polymers on improved porous substrates

Details Ion exchange polymers on improved porous substrates Ion exchange polymers on improved porous substrates

1972-09-21

1982-06-01

Kyle, Deborah L.

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

Synthetic resins

521 30, 210682, 210688, 252631, 423 2, C08B 1600

Patent

active

043329160

ABSTRACT:
Increased ion exchange capacity per unit weight of substrate is achieved upon using as the substrate regenerated cellulose sponge instead of cotton fabric. A water soluble crosslinkable polymeric material having ion ion exchange sites, such as polyvinyl phosphate or polyethylenimine, and a suitable crosslinking agent are dissolved in water. The sponge is wetted with the solution and dried and cured at about 100 degrees to 145 degrees C. to crosslink the polymer to the substrate. The so-prepared ion exchange composition is immersed in a flowing stream of dilute aqueous solution of heavy metal ions or otherwise contacted with such solution to effect separation and concentration of such cations.

REFERENCES:
patent: 2610953 (1952-09-01), Daul et al.
patent: 2927034 (1960-03-01), Chih
patent: 3057745 (1962-10-01), Meador
patent: 3110602 (1963-11-01), Politzer et al.
patent: 3122456 (1964-02-01), Meier et al.
patent: 3573277 (1971-03-01), Grant
patent: 3586646 (1971-06-01), Corte et al.
patent: 3652540 (1972-03-01), Determann et al.

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