Water insoluble chelate exchange resins having a crosslinked pol

Details Water insoluble chelate exchange resins having a crosslinked pol Water insoluble chelate exchange resins having a crosslinked pol

1975-06-16

1977-06-21

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

75101BE, 260 21R, 260 795NV, 423 24, 423139, 526 30, 526 50, 526 19, B01D 1504, C08F 2606

Patent

active

040310388

ABSTRACT:
New chelate exchange resins capable of selective recovery of copper, nickel, and other valuable metals from an acidic aqueous leach liquor are prepared by reacting a crosslinked haloalkyl polymer matrix resin (I) with certain aminopyridines (II) to give a resin (III) ##STR1## with pendent methyleneaminopyridine groups attached to the matrix resin. Particularly useful resins are obtained by reacting chloromethylated styrene-divinylbenzene copolymer beads with an aminomethylpyridine, such as 2-picolylamine, N-methyl-2-picolylamine, N-(2-hydroxyethyl)-2-picolylamine, N-(2-methylaminoethyl)-2-picolylamine, or bis-(2-picolyl)amine. At a typical copper ore leach liquor pH of about 2, the picolylamine resins will absorb 15-30 mg copper/ml resin with a 5-10 fold selectivity for copper over ferric iron.

REFERENCES:
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patent: 3473921 (1969-01-01), Schmucklea
patent: 3873668 (1975-03-01), Melby
"Ion Exchange" , Ed. Marinsky, Dekker, N.Y. 1969 Chapter 6.
Ion Exchange and Solvent Extraction of Metal Complexes, Marcus-Kerter, Wiley Interscience Nov. 1970.
J.A.C.S. vol. 82, No. 19, pp. 5013-5023, Goodwin-Lions.
"Inorganic Chemistry" , vol. 7, No. 3, Mar. 1968 Gruenwedel.
Analytica Chem. Arts, 66 (1973) 231-237, Elsevier-Eides et al. (Author).
Chem. Abstracts, vol. 81, Entry 170347h.
Chem. Abstracts, vol. 81, Entry 14368k.
Chem. Abstracts, vol. 81, Entry 159382v.

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