US4743389A
Expired / Lapsed
US
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N-alkyl amides as friction-reducers for lubricants and fuels
Assignee: Mobil Oil AS
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Filing: 1982-11-30
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Granted: 1988-05-10
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Expires: 2002-11-30
Abstract
Abstract N-alkyl amides, particularly N-alkyl formamides, are effective friction-reducing additives for use in lubricants and fuels.
Inventors
- 👤 Milton Braid
- 👤 Andrew G. Horodysky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:28
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10M; C10M133/00; C10M133/02; C10M133/16; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M141/00; C10M141/10; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/122; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor effective proportion of a friction-reducing or friction-modifying additive selected from the group consisting of formamides having the following general formula ##STR2## where R is C 10 to C 30 hydrocarbyl or a mixture of C 10-C 20 hydrocarbyl, R' is hydrogen and R" is C 1 alkyl.
Claim 2
Dependent Claim
68 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor effective proportion of a friction-reducing or friction-modifying additive selected from the group consisting of formamides having the following general formula ##STR2## where R is C 10 to C 30 hydrocarbyl or a mixture of C 10-C 20 hydrocarbyl, R' is hydrogen and R" is C 1 alkyl.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein R is alkyl, alkenyl, alkynyl, aryl, alkaryl, cycloalkyl or cycloaryl.
Claim 4
Dependent Claim
27 words
The composition of claim 1 wherein R is selected from the group consisting essentially of dodecyl, tetradecyl, hexadecyl, pentadecyl, coco, oleyl, tallow, stearyl, isostearyl or mixtures thereof.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein said composition comprises an oil of lubricating viscosity.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein said oil is a mineral or refined petroleum oil.
Claim 7
Dependent Claim
15 words
The composition of claim 4 wherein said oil of lubricating viscosity is a synthetic oil.
Claim 8
Dependent Claim
19 words
The composition of claim 4 wherein said oil of lubricating viscosity is a mixture of mineral and synthetic oils.
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein said composition comprises a grease.
Claim 10
Dependent Claim
17 words
The composition of claim 8 containing from about 0.1 to about 10 weight percent of said additive.
Claim 11
Dependent Claim
16 words
The composition of claim 9 containing from about 0.1 to 1 weight percent of said additive.
Claim 12
Dependent Claim
12 words
The composition of claim 1 wherein the N-alkyl formamide is N-oleyl formamide.
Claim 13
Dependent Claim
11 words
The composition of claim 1 wherein the formamide is N-coco formamide.
Claim 14
Dependent Claim
21 words
The lubricant composition as described in claim 1 comprising said formamide in combination with an effective amount of a zinc dithiophosphate.
Claim 15
Independent Claim
88 words
A method for reducing fuel consumption in an internal combustion engine by treating the moving surfaces thereof with a lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor effective proportion of a friction-reducing or friction-modifying additive selected from the group consisting of N-alkyl formamides having the following general formula ##STR3## where R is C 10 to C 30 hydrocarbyl or a mixture of C 10 -C 20 hydrocarbyl, R' is hydrogen and R" is C 1 alkyl.
Claim 16
Independent Claim
88 words
A method for reducing fuel consumption in an internal combustion engine by treating the moving surfaces thereof with a lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor effective proportion of a friction-reducing or friction-modifying additive selected from the group consisting of N-alkyl formamides having the following general formula ##STR3## where R is C 10 to C 30 hydrocarbyl or a mixture of C 10 -C 20 hydrocarbyl, R' is hydrogen and R" is C 1 alkyl.
Claim 17
Dependent Claim
12 words
The method of claim 14 wherein the formamide is an N-oleyl formamide.
References Cited (Backward Citations)
US1789302A
Cited
US3192910A
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US3312620A
Cited
US3778372A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |