Phenolic chelate resin, process for producing the same, and meth

Details Phenolic chelate resin, process for producing the same, and meth Phenolic chelate resin, process for producing the same, and meth

1981-03-23

1983-05-10

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

210688, 210698, 210912, 423 7, 423 215, 423 24, 423 54, 423 63, 423100, 423112, 528149, 528158, C08G 816, C08G 818

Patent

active

043831044

ABSTRACT:
The phenolic chelate resin has a chelate-forming group wherein part or all of the hydrogen atoms in a primary and/or secondary alkylamino group introduced in a phenol nucleus are replaced by a methylenephosphonate group. Also disclosed is a process for producing such a chelate resin, and a method for recovering heavy metal ions with such a resin. The resin has particularly high selectivity for adsorbing uranium ions, as well as high heat, acid and alkali resistance as well as dimensional stability. The resin is very effective for recovering uranium from various uranium-containing solutions such as sea water, crude phosphoric acid fertilizer solutions, lowgrade uranium ore, waste water from uranium refining, and uranium mine water.

REFERENCES:
patent: 2546938 (1951-03-01), Bauman et al.
patent: 3935098 (1976-01-01), Oda et al.
patent: 3936399 (1976-02-01), Hirai et al.
patent: 4197391 (1980-04-01), Uejima et al.
patent: 4250031 (1981-02-01), Uejima et al.
patent: 4266045 (1981-05-01), Uejima et al.
patent: 4284512 (1981-08-01), Hodgkin
Anal. Chem., vol. 46, No. 4, Apr. 1974, pp. 489-492, Sugawara et al.

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