Compositions – Absorptive – or bindive – and chemically yieldive
Reexamination Certificate
2006-04-11
2006-04-11
Anthony, Joseph D. (Department: 1714)
Compositions
Absorptive, or bindive, and chemically yieldive
C106S311000, C210S634000, C210S688000, C423S024000, C423S063000, C423S070000, C423S021500, C423S008000
Reexamination Certificate
active
07025899
ABSTRACT:
The preparation of concentrated solutions of oxime metal extractants, such as aldoximes and ketoximes, or mixtures of aldoxime and ketoxime, and the use thereof in formulating or preparing extraction reagent compositions for use in an extractant organic phase in a process of extracting metals from aqueous solutions containing metal values; and in particular, to concentrates which are solutions of individual ketoxime or aldoxime or mixtures of water-insoluble hydroxy aldoximes and ketoximes, in varying ratios by weight of 1:100 aldoxime to ketoxime, or conversely, 100:1 ketoxime to aldoxime, in water-immiscible hydrocarbon solvents or equilibrium modifiers. The invention also provides for maintaining stability of concentrates determined by accelerating rate calorimetry to define the ranges of oxime concentration and volume whereby the concentrate will be a stable, flowable, pourable and pumpable concentrate which can be safely stored long term. The extraction compositions may also optionally contain equilibrium modifiers or kinetic additives.
REFERENCES:
patent: 3224873 (1965-12-01), Swanson
patent: 3428449 (1969-02-01), Swanson
patent: 3616426 (1971-10-01), Nakao et al.
patent: 3925472 (1975-12-01), Swanson
patent: 3952775 (1976-04-01), Ogata
patent: 4020105 (1977-04-01), Ackerley et al.
patent: 4020106 (1977-04-01), Ackerley et al.
patent: 4029704 (1977-06-01), Anderson
patent: 4085146 (1978-04-01), Beswick
patent: 4173616 (1979-11-01), Koenders et al.
patent: 4350667 (1982-09-01), Andersson et al.
patent: 4500494 (1985-02-01), Scher
patent: 4507268 (1985-03-01), Kordosky et al.
patent: 4544532 (1985-10-01), Kordosky et al.
patent: 4563213 (1986-01-01), Hubred
patent: 4702838 (1987-10-01), Babcock et al.
patent: 5039497 (1991-08-01), Weber et al.
patent: 5281336 (1994-01-01), Dalton et al.
patent: 5788822 (1998-08-01), Martyak et al.
patent: 6156280 (2000-12-01), Virnig et al.
Collins Mary
Crandell Terry L.
Hein Hans C.
Jensen Ralph L.
Kordosky Gary A.
Anthony Joseph D.
Cognis Corporation
Daniels John E.
Ortiz Daniel S.
LandOfFree
Concentrated solutions of oxime metal extractants and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Concentrated solutions of oxime metal extractants and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concentrated solutions of oxime metal extractants and method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3590831