US4330339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower alkanoic acid derivatives of a diethanolamine/fatty acid condensate
Assignee: Dow Chemical Co
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Filing: 1980-01-04
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Granted: 1982-05-18
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Expires: 2000-01-04
Abstract
Abstract The title compositions exhibit superior efficacy as conditioners in the flotation of coal. These compositions are prepared by condensing diethanolamine with a C10-C24 fatty acid in a molar ratio of 1:2 and then introducing one-half the equimolar amount, relative to the condensate, of C1-C4 alkanoic acid.
Inventors
- 👤 Kenneth H. Nimerick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:41
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/005; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D1/02; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A composition of matter comprising the reaction product of two components: (1) a condensation product of diethanolamine and a C 10 -C 24 fatty acid condensed in a mole ratio of about 1:2, and (2) about one-half the equimolar amount of a C 1 -C 4 mono-carboxylic acid or mixture thereof, based on the moles of condensate.
Claim 2
Dependent Claim
57 words
A composition of matter comprising the reaction product of two components: (1) a condensation product of diethanolamine and a C 10 -C 24 fatty acid condensed in a mole ratio of about 1:2, and (2) about one-half the equimolar amount of a C 1 -C 4 mono-carboxylic acid or mixture thereof, based on the moles of condensate.
Claim 3
Dependent Claim
25 words
The compostion as described in claim 1 wherein the fatty acid is a tall oil fatty acid or a mixture of tall oil fatty acids.
Claim 4
Dependent Claim
13 words
The composition as described in claim 1 wherein component (2) is acetic acid.
Claim 5
Dependent Claim
13 words
The composition as described in claim 1 wherein component (2) is propionic acid.
Claim 6
Dependent Claim
22 words
The composition as described in claim 3 wherein the fatty acid condensed in component (1) is a tall oil fatty acid mixture.
Claim 7
Dependent Claim
30 words
The composition of claim 1 which further comprises fuel oil in such an amount that said reaction product constitutes about 0.1 to about 70 volume percent of the total volume.
Claim 8
Dependent Claim
15 words
The composition of claim 6 which further comprises an effective amount of a frothing agent.
Claim 9
Dependent Claim
15 words
The composition of claim 1 which further comprises an effective amount of a frothing agent.
References Cited (Backward Citations)
US2205042A
Cited
US2173058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |