Method of reducing the amount of cadmium capable of being extrac

Details Method of reducing the amount of cadmium capable of being extrac Method of reducing the amount of cadmium capable of being extrac

1975-11-26

1976-08-31

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288B, 106292, 106308B, C09C 110

Patent

active

039778959

ABSTRACT:
Acid-extractable cadmium in yellow, orange, or red cadmium pigments is reduced sharply without loss of tinctorial strength and other desirable pigment properties by suspending the pigment powder in water and adding approximately stoichiometric amounts of tin ions, preferably quadrivalent tin ions and sulfide ions, and recovering the solids from the mixture.

REFERENCES:
patent: 3220868 (1965-11-01), Flasch
patent: 3852404 (1974-12-01), Daly
patent: 3856546 (1974-12-01), Weiss

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