US4097390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for mineral concentrate dewatering during filtration
Assignee: Wyeth Holdings LLC
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Filing: 1977-07-20
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Granted: 1978-06-27
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Expires: 1997-07-20
Abstract
Abstract A dewatering aid for mineral concentrates comprising an ethoxylated secondary alcohol, a dialkylsulfosuccinic acid or salt thereof, and a mono(ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof provides improved dewatering with high aid retention on the dewatered concentrate.
Inventors
- 👤 Samuel Shang-Ning Wang
- 👤 Morris Eugene Lewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/008; B03D1/012
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
A dewatering aid for mineral concentrates comprising (1) from about 5 to about 98.9 weight percent of an ethoxylated secondary alcohol of the structure ##STR10## wherein n is an integer of about 1 to 10 and x and y are integers such that their sum is equal to about 7 to 23; (2) from about 1 to about 94.9 weight percent of a dialkylsulfosuccinic acid or salt thereof of the structure ##STR11## wherein R is an alkyl group of about 8 to 20 carbon atoms and M is a hydrogen, alkali metal or ammonium ion; and (3) from about 0.1 to about 10 weight percent of a mono(ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof of the structure ##STR12## wherein R is an alkyl group of about 8 to 26 carbon atoms, n is an integer of about 1 to 10 and M is a hydrogen, alkali metal or ammonium ion.
Claim 2
Dependent Claim
154 words
A dewatering aid for mineral concentrates comprising (1) from about 5 to about 98.9 weight percent of an ethoxylated secondary alcohol of the structure ##STR10## wherein n is an integer of about 1 to 10 and x and y are integers such that their sum is equal to about 7 to 23; (2) from about 1 to about 94.9 weight percent of a dialkylsulfosuccinic acid or salt thereof of the structure ##STR11## wherein R is an alkyl group of about 8 to 20 carbon atoms and M is a hydrogen, alkali metal or ammonium ion; and (3) from about 0.1 to about 10 weight percent of a mono(ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof of the structure ##STR12## wherein R is an alkyl group of about 8 to 26 carbon atoms, n is an integer of about 1 to 10 and M is a hydrogen, alkali metal or ammonium ion.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein there is also present a solvent in amounts such that said (1), (2) and (3) constitute from about 30 to 100 weight percent of the total composition.
Claim 4
Dependent Claim
29 words
The composition of claim 2 wherein said ethoxylated secondary alcohol has a value of n equal to 3 and the sum of x and y is 8 to 12.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein said dialkylsulfosuccinic acid or salt thereof is sodium di(2-ethylhexyl) sulfosuccinate.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein said dialkylsulfosuccinic acid or salt thereof is sodium di(tridecyl) sulfosuccinate.
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein said mono (ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof is ##STR13##
Claim 8
Dependent Claim
34 words
The composition of claim 1 wherein said ethoxylated secondary alcohol is ##STR14## wherein the sum of x and y equals 8 to 12 and said dialkylsulfosuccinic acid or salt thereof is sodium di(2-ethylhexyl) sulfosuccinate.
Claim 9
Dependent Claim
34 words
The composition of claim 1 wherein said ethoxylated secondary alcohol is ##STR15## wherein the sum of x plus y equals 8 to 12 and said dialkylsulfosuccinic acid or salt thereof is sodium di(tridecyl) sulfosuccinate.
Claim 10
Dependent Claim
45 words
The composition of claim 1 wherein said ethoxylated secondary alcohol is ##STR16## wherein the sum of x and y equals 8 to 12, said dialkylsulfosuccinic acid is sodium di(2-ethylhexyl) sulfosuccinate and said mono(ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof is ##STR17##
Claim 11
Dependent Claim
48 words
The composition of claim 1 wherein said ethoxylated secondary alcohol is ##STR18## wherein the sum of x plus y equals 8 to 12, the dialkylsulfosuccinic acid or salt thereof is sodium di(tridecyl) sulfosuccinate, and said mono(ethoxylated alcohol) carboxylate ester of a sulfosuccinic acid or salt thereof is ##STR19##
References Cited (Backward Citations)
US3359330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |