Chelate resin prepared by reacting butane-1,2,3,4-tetra-carboxyl

Details Chelate resin prepared by reacting butane-1,2,3,4-tetra-carboxyl Chelate resin prepared by reacting butane-1,2,3,4-tetra-carboxyl

1981-04-07

1983-07-05

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524845, 525420, 525435, 525436, 528336, 528342, 528351, 528353, C08G 6926

Patent

active

043919456

ABSTRACT:
The present invention relates to an amphoteric resin obtained by condensation of polyethylenepolyamine and butane-1,2,3,4-tetra-carboxylic acid. The present invention can provide several forms of amphoteric resins such as linear structure, somewhat cross-linked water insoluble and water swellable structure and water insoluble and cross-linked structure, since the resin contains in its repeating units an imino group, a carboxylic radical and an amido group. The resin can form a chelate with several kinds of metal ions. Furthermore, the resin can also be modified by introducing several kinds of functional groups to bestow upon the resin particular chelating ability. Therefore the invention can provide novel resins, which have a strong chelating faculty and are suitably used for removing and recovering agents of heavy metals and noble metals.

REFERENCES:
Minami et al., Chem. Abstr., vol. 80, 1974, 84401U.
J. B. Gardner et al., J. Appln. Polymer Sci., 9, 715 (1965).
L. R. Morris et al., J. Am. Chem. Soc. 81, 377 (1959).
Marhol et al., Talanta, 21, 751 (1974).
J. F. Dingman et al., Anal. Chem. 46, 774 (1974).

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