US4196092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning agent for froth flotation of fine coal
Assignee: Wyeth Holdings LLC
•
Filing: 1978-04-17
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Granted: 1980-04-01
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Expires: 1998-04-17
Abstract
Abstract A conditioning agent comprising a frother and a bis(alkyl)ester of a sulfosuccinic acid salt provides high coal recovery with reduced ash content.
Inventors
- 👤 Samuel S. Wang
- 👤 Morris E. Lewellyn
- 👤 Eugene L. Smith, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:06
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/006; B03D1/008; B03D2201/00; B03D2201/04; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A conditioning agent which consists essentially of from about 1 to about 99 weight percent of a mixture of C 4 -C 8 alcohols, correspondingly, from about 99 to about 1 weight percent of a bis(alkyl)ester of a sulfosuccinic acid salt of the general structure ##STR3## wherein R is a linear or branched chain alkyl group of 3 or 4 carbon atoms and M is a cation providing a water-soluble salt and, optionally, a fuel oil.
Claim 2
Dependent Claim
76 words
A conditioning agent which consists essentially of from about 1 to about 99 weight percent of a mixture of C 4 -C 8 alcohols, correspondingly, from about 99 to about 1 weight percent of a bis(alkyl)ester of a sulfosuccinic acid salt of the general structure ##STR3## wherein R is a linear or branched chain alkyl group of 3 or 4 carbon atoms and M is a cation providing a water-soluble salt and, optionally, a fuel oil.
Claim 3
Dependent Claim
20 words
The conditioning agent of claim 1 wherein said bis(alkyl)ester of a sulfosuccinic acid salt is the bis(isobutyl)ester of sodium sulfosuccinate.
Claim 4
Dependent Claim
11 words
The conditioning agent of claim 1 also containing a fuel oil.
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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |