Phenolic chelate resin and method of adsorption treatment

Details Phenolic chelate resin and method of adsorption treatment Phenolic chelate resin and method of adsorption treatment

1978-03-01

1980-04-08

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

210 38B, 521 39, 529155, C08G 1406, C08J 520

Patent

active

041973917

ABSTRACT:
A phenolic chelate resin comprising the three-dimensional product obtained by cross-linking a phenolic compound represented by the general formula (I): ##STR1## (wherein M is an alkali metal atom, an ammonium group, or a hydrogen atom, and R.sub.1 and R.sub.2, which may be the same or different, each is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms) with a phenol and an aldehyde. The phenolic chelate resin selectively adsorbs ferric ion and/or cupric ion in an acidic aqueous solution at a pH of 3 and less.

REFERENCES:
patent: 3461099 (1969-08-01), Muzyczko et al.
patent: 3936399 (1976-02-01), Hirai et al.
patent: 4028284 (1977-06-01), Hirai et al.
Helvetica Chimica Acta, 35, 1785-1793 (1952), Schwarzenbach et al._

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