Iminodiacetate chelating resin and manufacturing method therefor
AssigneeMitsubishi Chemical Corporation
InventorsRyosuke Tsuhara, Masahiko Hashiguchi, Hirohisa Kubota
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Abstract
The present invention relates to an iminodiacetic acid chelating resin, wherein the water amount in the resin is from 50 to 75% and the volume ratio of Na form/H form is from 1.4 to 1.8. Furthermore, the present invention relates to a method for producing an iminodiacetic acid chelating resin, wherein an alcohol is used as a solvent for the amination reaction of a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile or sodium iodide and/or potassium iodide is used as a catalyst for the amination reaction.
Claims13
An iminodiacetic acid chelating resin, wherein a water amount in the resin is from 50 to 75% and a volume ratio of Na form/H form is from 1.4 to 1.8, and
- wherein infrared absorption spectrum obtained by infrared absorption analysis has a downwardly convex peak in the range of 2,100 to 2,300 cm−1.
Dependencies are inferred from the claim text.