US3977994A
Expired / Lapsed
US
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Rust inhibiting composition
Assignee: Universal Oil Products Co
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Filing: 1974-06-24
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Granted: 1976-08-31
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Expires: 1994-06-24
Abstract
Abstract A composition which will inhibit the formation of rust on the surface of a metal consists of a mixture of an organic acid, an N-alkyl- or cycloalkyl-substituted ethanolamine, at least one emulsifying agent and water.
Inventors
- 👤 Edward M. Geiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:39
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
A rust inhibiting composition consisting essentially of an emulsion of from about 0.5 to about 2.5% by weight of an organic acid containing from 16 to 20 carbon atoms and from about 0.1 to about 5% by weight of an N-alkyl or N-cycloalkyl ethanolamine in water.
Claim 2
Dependent Claim
46 words
A rust inhibiting composition consisting essentially of an emulsion of from about 0.5 to about 2.5% by weight of an organic acid containing from 16 to 20 carbon atoms and from about 0.1 to about 5% by weight of an N-alkyl or N-cycloalkyl ethanolamine in water.
Claim 3
Dependent Claim
24 words
The composition as set forth in claim 1 in which the alkyl substituent of said N-alkyl ethanolamine contains from 3 to 12 carbon atoms.
Claim 4
Dependent Claim
24 words
The composition as set forth in claim 1 in which the cycloalkyl substituent of said N-cycloalkyl- ethanolamine contains from 3 to 8 carbon atoms.
Claim 5
Dependent Claim
16 words
The composition as set forth in claim 1 in which said organic acid is stearic acid.
Claim 6
Dependent Claim
16 words
The composition as set forth in claim 1 in which said organic acid is margaric acid.
Claim 7
Dependent Claim
16 words
The composition as set forth in claim 1 in which said organic acid is arachidic acid.
Claim 8
Dependent Claim
16 words
The composition as set forth in claim 1 in which said organic acid is oleic acid.
Claim 9
Dependent Claim
14 words
The composition as set forth in claim 1 in which said N-alkyl-ethanolamine is N-(1-methylheptyl)-ethanolamine.
Claim 10
Dependent Claim
14 words
The composition as set forth in claim 1 in which said N-alkyl-ethanolamine is N-(1-ethyl-3-methylpentyl)-ethanolamine.
Claim 11
Dependent Claim
15 words
The composition as set forth in claim 1 in which said N-cycloalkyl- ethanolamine is N-(cyclohexyl)-ethanolamine.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |