More efficient ether modifiers for copper extractant formulations
AssigneeCognis IP Management GmbH
InventorMICHAEL VIRNIG
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Abstract
The disclosed invention provides water-insoluble, water-immiscible extraction reagent compositions comprising an extractant reagent comprising one or more aldoxime extractants, optionally including one or more ketoxime extractants, in combination with one or more ether or polyester equilibrium modifiers, or mixtures thereof, selected from the compounds of Formula I-III:
Claims23
A water-immiscible extraction reagent formulation comprising an extractant reagent comprising one or more aldoxime extractants, and, optionally, one or more ketoxime extractants, in combination with one or more branched-chain ether equilibrium modifiers in a molar ratio of branched-chain ether equilibrium modifier(s)-to-extractant reagent effective to provide a net copper transfer greater tha that achieved in the absence of such modifier(s), wherein the branched-chain ether equilibrium modifier(s) is/are one or more compounds of Formula I:
- wherein R1, R2, and R3, independently, represent a saturated or unsaturated, straight or branched C1-C6-alkyl group, hydrogen, a C5- or C6-cycloalkyl group, or a phenyl group;
- and
- R4 represents a saturated or unsaturated, straight-chain C1-C20-alkyl group, with the proviso that, if one of R1, R2, and R3 is hydrogen, the other two must be the same C1-C6-alkyl group or each a different C1-C6-alkyl group, or one of the other two may be a C5- or
- C6-Cycloalkyl group or a phenyl group, and with the further proviso that the total number of carbon atoms in each branched-chain ether equilibrium modifier is 8-24.
A water-immiscible extraction reagent formulation comprising an extractant reagent comprising one or more aldoxime extractants, and, optionally, one or more ketoxime extractants, in combination with one or more branched-chain polyether equilibrium modifiers in a molar ratio of branched-chain ether equilibrium modifier(s)-to-extractant reagent effective to provide a net copper transfer greater than that achieved in the absence of such modifier(s), wherein the branched-chain polyether equilibrium modifier is a compound of Formula II:
- wherein R1, R2, R3, R4, R5 and R6, independently, represent a saturated or unsaturated, straight- or branched-C1-C6-alkyl group, hydrogen, a C5- or C6-cycloalkyl group, or a phenyl group;
- and
- x is 2-12,
- with the proviso that at least two of R1, R2, and R3, and at least one of R4, R5 and R6 are other than hydrogen, and
- with the further proviso that the total number of carbon atoms in the branched-chain polyether equilibrium modifier is 10-24.
A water-immiscible extraction reagent formulation comprising an extant reagent comprising one or more aldoxime extractants, and, optionally, one or more ketoxime extractants, in combination with one or more branched-chain polyether equilibrium modifiers in a molar ratio of modifier(s)-to-extractant reagent effective to provide a net copper transfer greater than that achieved in the absence of such modifier(s), wherein the branched-chain polyether equilibrium modifier is a compound of Formula III:
- wherein R1, R2, R3, R4, R5 and R6, independently, represent a saturated or unsaturated, straight- or branched-C1-C6-alkyl group, hydrogen, a C5- or C6-cycloalkyl group, or a phenyl group;
- and
- x is 2-6.
- with the proviso that at least two of R1, R2, and R3, and at least one of R4, R5 and R6 are other than hydrogen, and
- with the further proviso that the total number of carbon atoms in the branched-chain polyether equilibrium modifier is 10-24.
Dependencies are inferred from the claim text.