Novel functionalized resin derived from polyallylamine

A new functionalized resin represented by the general formula was derived from polyallylamine. [wherein; X represents the general formula (tis 0 or 1, l is an integer of 1 to 20), n ≧ 10, 0 < j < 1, u = 1 or 2, and m = 1 or 2, with the proviso that t and m are not simultaneously 0]. The functionalized resin is preferably used for recovering heavy metals in waste water and for optically dissolving amino acids.