Phenolic chelate resin
AssigneeUnitika Ltd.
InventorsMasahide Hirai, Mikio Fujimura, Masahiro Kazigase, Minoru Saito
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Abstract
A high adsorption capacity phenolic chelate resin consisting of a heavy metal-adsorbing phenolic chelate resin, containing iminodiacetic acid groups in the phenol nuclei, and having an adsorbability to a heavy metal in the proportion of at least 1.2 m equivalent per g of dried terminal Na type resin, said phenolic chelate resin being prepared from phenols, aldehydes and iminodiacetic acid.
Claims7
A high adsorption capacity phenolic chelate resin consisting of a heavy metal-adsorbing phenolic chelate resin having an adsorbability to a heavy metal in the proportion of at least 1.2 milliequivalents per g. of dried terminal Na type resin, said phenolic chelate resin being prepared from at least one phenol, at least one aldehyde and iminodiacetic acid, said iminodiacetic acid being used in the ratio of more than 0.2 based on the total phenol.
Dependencies are inferred from the claim text.