Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1979-05-21
1980-12-02
Waltz, Thomas A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252182, 2604299, 260439R, 260465E, 260552SC, 260554, 423 24, 423109, 423139, 423DIG14, C07F 306, C07F 108, C07F 1504, C07C15900
Patent
active
042370620
ABSTRACT:
Certain sulfonylthiosemicarbazides, metal complexes thereof and solutions of said compounds in essentially water-immiscible, liquid hydrocarbon solvents are disclosed. The sulfonylthiosemicarbazides have the general structural formula: ##STR1## wherein R and R.sup.1 are as defined in the specification and claims hereof. Particular metal values are recovered from their aqueous solutions by using sulfonylthiosemicarbazides dissolved in essentially water-immiscible, liquid hydrocarbon solvents. The extraction process involves contacting the metal value containing aqueous solution with the solution of the sulfonylthiosemicarbazide in essentially water-immiscible, liquid hydrocarbon solvent and stripping the metal from the loaded organic phase.
REFERENCES:
patent: 2605262 (1962-07-01), Behnisch et al.
patent: 3954936 (1976-05-01), Shozda
patent: 4160807 (1979-07-01), Virnig et al.
Hirooka et al., CA 66: 11254f (1963).
Kurihara et al., CA 73: 55770p (1970).
Henkel Corporation
Span Patrick J.
Waltz Thomas A.
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