Patent US3725046A successfully refreshed from Google Patents.
US3725046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction process for the recovery of copper values
Assignee: Ashland LLC
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Filing: 1971-02-22
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Granted: 1973-04-03
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Expires: 1991-02-22
Abstract
Abstract The coalescence rate of an aqueous/liquid hydrocarbon emulsion system is enhanced by the presence of an alkylated phenol as a minor part of the organic phase. Such hydrocarbon solutions further containing a chelation metal collector can be advantageously employed in the liquid ion exchange process for the extractive recovery of metal values from dilute aqueous solutions thereof.
Inventors
- 👤 J Hartlage
- 👤 A Cronberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:56
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/40; C22B3/406; C22B15/00; C22B15/0063; C22B3/402; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
The improvement in accordance with claim 1 wherein said alkylated phenol is hexyl phenol, nonyl phenol, dodecyl phenol or mixtures thereof.
Claim 2
Dependent Claim
14 words
The improvement in accordance with claim 2 wherein said alkylated phenol is nonyl phenol.
Claim 3
Dependent Claim
13 words
The improvement in accordance with claim 3 wherein said chelation collector is 7-(3-(5,5,7,7-tetramethyl-1-octenyl))-8-hydroxyquinoline.
Claim 4
Dependent Claim
28 words
The improvement in accordance with claim 4 wherein the chelation collector and the hydrocarbon solvent are present in a volumetric ratio of from about 1:99 to 25:75, respectively.
Claim 5
Dependent Claim
26 words
The improvement in accordance with claim 5 wherein said chelation collector and nonyl phenol are present in a volumetric ratio of from 15:85 to 30:70, respectively.
Claim 6
Dependent Claim
28 words
The improvement in accordance with claim 6 wherein the chelation collector and the hydrocarbon solvent are present in a volumetric ratio of from about 1:99 to 10:90, respectively.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |