US4139481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combinations of alkylamidoalkyl monoesters of sulfosuccinic acid and fatty acids as collectors for non-sulfide ores
Assignee: Wyeth Holdings LLC
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Filing: 1977-12-21
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Granted: 1979-02-13
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Expires: 1997-12-21
Abstract
Abstract A combination of a fatty acid and an alkylamidoalkyl monoester of a sulfosuccinic acid or salt thereof provides improved recovery of non-sulfide ores by froth flotation.
Inventors
- 👤 Samuel S. Wang
- 👤 Eugene L. Smith, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/008; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
A collector combination for non-sulfide minerals comprising from about 1 to about 99 weight percent of a fatty acid derived from a vegetable or animal oil and, correspondingly, from about 99 to about 1 weight percent of an alkylamidoalkyl monoester of a sulfosuccinic acid of the general formula: ##STR5## where R is an alkyl radical of 4 to 18 carbon atoms, R' and R" are alkylene radicals of 2 to 6 carbon atoms, Y is --NH-- or --O--, X is hydrogen, alkali metal or ammonium, and n is 0-2.
Claim 2
Dependent Claim
89 words
A collector combination for non-sulfide minerals comprising from about 1 to about 99 weight percent of a fatty acid derived from a vegetable or animal oil and, correspondingly, from about 99 to about 1 weight percent of an alkylamidoalkyl monoester of a sulfosuccinic acid of the general formula: ##STR5## where R is an alkyl radical of 4 to 18 carbon atoms, R' and R" are alkylene radicals of 2 to 6 carbon atoms, Y is --NH-- or --O--, X is hydrogen, alkali metal or ammonium, and n is 0-2.
Claim 3
Dependent Claim
18 words
The collector combination of claim 1 wherein said alkylamidoalkyl monoester of a sulfosuccinic acid has the structure: ##STR6##
Claim 4
Dependent Claim
15 words
The collector combination of claim 1 wherein said fatty acid is derived from tall oil.
Claim 5
Dependent Claim
26 words
The collector combination of claim 1 wherein said fatty acid is derived from tall oil and said alkylamidoalkyl monoester of sulfosuccinic acid has the structure: ##STR7##
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |