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What is Chelating Resin?

Chelating resin is a special ion exchange resin that can form a cross-linking functional polymer with a multi-coordination complex with metal ions. Among the functional groups, there are atoms such as O, N, S, P, and As which have unbonded lone pairs of electrons.

The structure of the chelating resin is generally more complicated than that of the ion exchange resin, but the synthesis method is substantially similar to that of the ion exchange resin, that is, the resin precursor is first synthesized, and then the ligand group is introduced by a functional group reaction. It is also possible to prepare a monomer having a ligand first and then polymerize to obtain a chelating resin, but the foregoing method is more widely used. 

Taking the aminocarboxylic acid resin in the N, O ligand chelating resin as an example, the polystyrene precursor can be firstly subjected to a chloromethylation route or a direct amination method to obtain a primary amine ball, and then a primary amine ball and a chloroacetic acid. The reaction gives an aminocarboxylic acid resin. The cleavable portion of some chelating resin functional groups can also form ionic bonds with metal ions like ordinary ion exchange resins. 

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Latest News
26
2024 01
 Sunresin has been selected for the Hang Seng China A Specialised & Sophisticated 50 Index
On January 22, Hong Kong's Hang Seng Index Company launched the "Hang Seng China A Specialised & Sophisticated 50 Index", and Sunresin (300487.SZ) was successfully selected as a constituent stock. As of January 12, 2024, the proportion was 2.78%.
27
2023 11
 Sunresin Participates in Morgan Stanley 22nd Annual Asia-Pacific Summit
Sunresin, a leading technology company, was invited to attend Morgan Stanley's 22nd Asia-Pacific Summit in Singapore from November 15th to 16th. This summit is a pivotal conference for institutional investors in the Asia-Pacific region.
25
2023 11
 Sunresin won the 2023 Forbes Asia Top 200 and was invited to attend the award ceremony
On November 21, the Forbes Asia Best Under A Billion Forum & Awards Dinner was held in Manila, Philippines. We are proud to announce that Dr. Gao Yuejing, chairwoman of Sunresin, has been invited to attend the award ceremony and has received for the second time this honor since 2020.

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