US4065502A
Expired / Lapsed
US
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Certain β-diketones and the use thereof as metal extractants
Assignee: General Mills Chemicals Inc
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Filing: 1975-12-01
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Granted: 1977-12-27
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Expires: 1995-12-01
Abstract
Abstract New beta -diketones of the structure <IMAGE> where R is phenyl or alkyl substituted phenyl, R' is alkyl, alkyl substituted phenyl or chloro substituted phenyl and R'' is H or -CN with the provisos that; (1) when R is phenyl, R' is a branched chain alkyl group of at least seven carbon atoms and (2) when R is alkyl substituted phenyl, the number of carbon atoms in the alkyl substituent or substituents is at least 7 and at least one such alkyl substituent is branched chain. Process of recovering copper and nickel from their aqueous solutions by the use of the new beta -diketones.
Inventors
- 👤 Kenneth D. MacKay
- 👤 Edgar R. Rogier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:35
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/455; C07C255/00; C07C49/00; C07C49/76; C07C49/782; C07C49/784; C07C49/80; C07C49/813; C07C49/92; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/306; C22B3/33; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A compound of the structure ##STR15## where R is phenyl and R' is a branched chain alkyl group of 7 to 20 carbon atoms.
Claim 2
Dependent Claim
24 words
A compound of the structure ##STR15## where R is phenyl and R' is a branched chain alkyl group of 7 to 20 carbon atoms.
Claim 3
Dependent Claim
13 words
The compound of claim 1 wherein R' is a branched chain heptyl group.
Claim 4
Dependent Claim
13 words
The compound of claim 1 wherein R' is a branched chain heptadecyl group.
References Cited (Backward Citations)
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |