Esterified dicarboxylic acid and its use

Details Esterified dicarboxylic acid and its use Esterified dicarboxylic acid and its use

1982-05-10

1984-02-07

Kittle, John E.

Compositions

Physical separation agents

Froth-flotation or differential adherence

252351, B03D 300, C22B 300

Patent

active

044302380

ABSTRACT:
The present invention specifies an esterified dicarboxylic acid of the general formula ##STR1## in which R.sup.I is an aliphatic hydrocarbon group with 7-21 carbon atoms, R.sup.II is a hydrocarbon radical with 2-6 carbon atoms and A is an alkylene oxide group derived from an alkylene oxide with 2-4 carbon atoms. Particularly preferred are compounds in which A relates to a group derived from ethylene oxide and in which R.sup.II is --CH.dbd.CH-- or the phenylene group --C.sub.6 H.sub.4 --. The compound exhibits selective properties when used in the flotation of oxide and salt type minerals.

REFERENCES:
patent: 2302338 (1942-11-01), Moeller et al.
patent: 2759607 (1956-08-01), Boyd et al.
patent: 3779380 (1973-12-01), Bishop

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