Selective ion-complexing media for the removal of metal-ion cont

Details Selective ion-complexing media for the removal of metal-ion cont Selective ion-complexing media for the removal of metal-ion cont

1986-11-10

1989-10-24

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 27, 524236, 524417, C08D 520

Patent

active

048762873

ABSTRACT:
Ion-complexing gels are disclosed for the selective removal of metal ions from plating solutions, the gels comprising hydrophobic nonporous polymers plasticized and swollen with either hydroxyoxime or phosphoric acid ester complexing agents. Also disclosed are novel ion-complexing media comprising polymeric microporous anisotropic beads impregnated with the same complexing agents. Copper, zinc and iron contaminants are effectively removed from nickel-plating solutions.

REFERENCES:
patent: 4317804 (1982-03-01), Ichijo
patent: 4515906 (1985-05-01), Friesln et al.
patent: 4622344 (1986-11-01), Babcock et al.

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