US4427562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction reducers for lubricants and fuels
Assignee: Mobil Oil AS
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Filing: 1982-05-06
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Granted: 1984-01-24
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Expires: 2002-05-06
Abstract
Abstract N-alkoxyalkyl amides may be formed by the reaction of primary alkoxyalkylamines with carboxylic acids such as formic acid, or alternatively by ammonolysis of the appropriate formate ester. The resultant amides exhibit friction reducing properties when incorporated in additive amounts in lubricants and fuels. Extremely low concentrations of such additives, i.e. N-alkoxyalkyl formamides in lubricating oils result in vastly improved, i.e. lowered coefficients of friction. By virtue of the friction reducing characteristics and lubricity properties, the additive compositions of the present invention exhibit reduced wear on rubbing surfaces.
Inventors
- 👤 Andrew G. Horodysky
- 👤 Milton Braid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:40
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10L10/04; C10M; C10M133/00; C10M133/02; C10M133/16; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/086; C10N; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A lubricant or fuel composition comprising a major amount of an oil of lubricating viscosity, a grease prepared therefrom or a liquid hydrocarbon fuel and a minor amount of an additive effective for providing friction reducing, copper anti-corrosion or antioxidant properties to said composition comprising an amide represented by the following formula: ##STR4## wherein R is a hydrocarbyl group or a mixture of hydrocarbyl groups containing from about 5-30 carbon atoms; R 1 is a hydrocarbyl group containing from about 2-10 carbon atoms; and R 2 is hydrogen.
Claim 2
Dependent Claim
88 words
A lubricant or fuel composition comprising a major amount of an oil of lubricating viscosity, a grease prepared therefrom or a liquid hydrocarbon fuel and a minor amount of an additive effective for providing friction reducing, copper anti-corrosion or antioxidant properties to said composition comprising an amide represented by the following formula: ##STR4## wherein R is a hydrocarbyl group or a mixture of hydrocarbyl groups containing from about 5-30 carbon atoms; R 1 is a hydrocarbyl group containing from about 2-10 carbon atoms; and R 2 is hydrogen.
Claim 3
Dependent Claim
22 words
The lubricant composition of claim 1 wherein said additive is prepared by the reaction of a primary alkoxyalkylamine with a carboxylic acid.
Claim 4
Dependent Claim
21 words
The lubricant composition of claim 1 wherein said additive is prepared by the ammonolysis of a formate ester with a N-alkoxyalkylamine.
Claim 5
Dependent Claim
49 words
A composition as described in claim 2 wherein said alkoxyalkylamine is an alkoxyalkyl propylamine represented by the following structural formula: ##STR5## wherein R is a hydrocarbyl group containing about 20% C 12 , about 30% C 13 , about 30% C 14 , and about 20% C 15 .
Claim 6
Dependent Claim
43 words
A composition as described in claim 2 wherein said alkoxyalkylamine is an alkoxyalkyl propylamine represented by the following structural formula: ##STR6## wherein R is a hydrocarbyl group containing about 56% C 8 , about 39% C 10 and about 5% C 6 .
Claim 7
Dependent Claim
15 words
A lubricant composition as defined in claim 2 wherein said carboxylic acid is formic acid.
Claim 8
Independent Claim
49 words
A method for reducing the friction and copper corrosion characteristics and improving the antioxidant properties of a lubricant composition which comprises adding to a lubricant composition, comprising an oil of lubricating viscosity or grease prepared therefrom, a minor effective amount of an additive, said additive comprising a N-alkoxyalkyl amide.
Claim 9
Independent Claim
49 words
A method for reducing the friction and copper corrosion characteristics and improving the antioxidant properties of a lubricant composition which comprises adding to a lubricant composition, comprising an oil of lubricating viscosity or grease prepared therefrom, a minor effective amount of an additive, said additive comprising a N-alkoxyalkyl amide.
Claim 10
Independent Claim
33 words
A method for reducing the fuel consumption in an internal combustion engine which comprises adding to the lubricant or fuel a minor effective amount of an additive, said additive comprising a N-alkoxylalkyl amide.
Claim 11
Independent Claim
33 words
A method for reducing the fuel consumption in an internal combustion engine which comprises adding to the lubricant or fuel a minor effective amount of an additive, said additive comprising a N-alkoxylalkyl amide.
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) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |