Preparation of N, N ligand chelating resin

Such chelating resins include polyamines, pyridines, oximes, pyrazoles, imidazoles, guanidines and many other varieties

For example, dissolve 0.

The reaction of pyridine and guanidine compounds with chloromethylated cross-linked polystyrene can obtain the corresponding chelating resin

For example, add 5.

In another example, the oil phase is composed of vinyl pyridine, cross-linking agent, porogen, and initiator mixed in a certain proportion; the water phase is composed of a certain concentration of dispersant added to deionized water, and the salting-out agent is uniformly mixed

Lin Xue et al.

①Synthesis of SG resin

② Synthesis of SGN resin

③Synthesis of GG resin

④ Synthesis of GGN resin

The oxime chelating resin can be synthesized from the copolymer of acrylonitrile and divinylbenzene.

The acetylated polystyrene reacts with methyl nitrite in dioxane-HCI, and then is oximated with hydroxylamine to obtain oxime resin