Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbam

Details Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbam Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbam

1987-03-30

1988-05-31

Stoll, Robert L.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209166, 75 2, 423 26, 423 53, 2605135, B03D 114

Patent

active

047479400

ABSTRACT:
Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkylene radicals each preferably having from 1 to 12 carbon atoms, and wherein M is selected from the group consisting of alkali metal atoms and ammonium; their use as ore flotation depressants; and a process for making these novel compositions are disclosed.

REFERENCES:
patent: 3425550 (1969-02-01), Bearson et al.
patent: 3464551 (1969-06-01), Falvey
patent: 4595538 (1986-06-01), Kimble et al.

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