US4139482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of a fatty acid and an N-sulfodicarboxylic acid asparate 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 collector combination of a fatty acid and an N-sulfodicarboxylic acid aspartate provides boostering action in the recovery of non-sulfide minerals.
Inventors
- 👤 Rudolph N. Holme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:17
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: 7
Claim 1
Independent Claim
153 words
A collector combination for non-sulfide minerals comprising from about 1 to 99 weight percent of a fatty acid derived from a vegetable or mineral oil, said acid being present in hydrogen form or as an alkali metal or ammonium salt, and, correspondingly, from about 99 to about 1 weight percent of an N-sulfodicarboxylic acid aspartate of the general formula: ##STR3## wherein X and X' are members of the group consisting of hydrogen and cationic salt-forming radicals, R is the residue of an aliphatic polycarboxylic acid resulting from removal therefrom of a sulfonic acid group and two carboxylic acid groups, R' is a member of the group consisting of alkyl, alkoxyalkyl and hydroxyalkyl radicals of from 8 to 20 carbon atoms, and R" and R'" are members of the group consisting of hydrogen, alkyl and cationic salt-forming radicals, said N-sulfodicarboxylic acid asparate being in a form compatible with the form of said fatty acid.
Claim 2
Dependent Claim
153 words
A collector combination for non-sulfide minerals comprising from about 1 to 99 weight percent of a fatty acid derived from a vegetable or mineral oil, said acid being present in hydrogen form or as an alkali metal or ammonium salt, and, correspondingly, from about 99 to about 1 weight percent of an N-sulfodicarboxylic acid aspartate of the general formula: ##STR3## wherein X and X' are members of the group consisting of hydrogen and cationic salt-forming radicals, R is the residue of an aliphatic polycarboxylic acid resulting from removal therefrom of a sulfonic acid group and two carboxylic acid groups, R' is a member of the group consisting of alkyl, alkoxyalkyl and hydroxyalkyl radicals of from 8 to 20 carbon atoms, and R" and R'" are members of the group consisting of hydrogen, alkyl and cationic salt-forming radicals, said N-sulfodicarboxylic acid asparate being in a form compatible with the form of said fatty acid.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein said fatty acid is a tall oil fatty acid.
Claim 4
Dependent Claim
9 words
The composition of claim 1 wherein R' is octadecyl.
Claim 5
Dependent Claim
9 words
The composition of claim 1 wherein R' is octadecenyl.
Claim 6
Dependent Claim
9 words
The composition of claim 2 wherein R' is octadecyl.
Claim 7
Dependent Claim
33 words
The composition of claim 1 wherein the weight percent of fatty acid is from about 90 to 97 and, correspondingly, the weight percent of N-sulfodicarboxylic acid aspartate is from about 10 to 3.
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 |