Chelate exchange resins from aminopyridines

Details Chelate exchange resins from aminopyridines Chelate exchange resins from aminopyridines

C - Chemistry, Metallurgy

08

J

402/1, 402/320,

C08J 5/20 (2006.01) B01J 45/00 (2006.01) C08F 8/32 (2006.01) C08G 8/28 (2006.01) C08G 85/00 (2006.01)

Patent

CA 1094731

A B S T R A C T Chelate exchange resins having picolylaminoalkyl groups as the chelating moieties are prepared by reacting a crosslinked haloalkyl polymer matrix resin with a picolylamine to give a resin having picolylaminoalkyl or N-substituted picolylaminoalkyl groups attached to the matrix resin. The corsslinked haloalkyl polymer matrix is prepared by halomethylating a suitable matrix resin, such as styrene-divinylbenzene or phenol-formaldehyde copolymers and reacting this product with a picolylamine, preferably a 2-picolylamine. The chelate resins have high capacity and high selectivity for copper and nickel in the presence of iron, especially when treating acidic ore leach liquors.

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