US4244829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon-soluble epoxidized fatty acid esters as lubricity modifiers for lubricating oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-03-07
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Granted: 1981-01-13
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Expires: 1998-03-07
Abstract
Abstract Hydrocarbon-soluble epoxidized fatty acid esters prepared by the epoxidation of unsaturated carboxylic acid esters are useful hydrocarbon additives. Their incorporation into a suitable hydrocarbon functional fluid such as a lubricating oil gives improved antiwear and antifriction properties.
Inventors
- 👤 Keith Coupland
- 👤 Clinton R. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:24
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10M; C10M129/00; C10M129/02; C10M129/66; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
In a lubricating motor oil composition comprising a major amount of a mineral lubricating oil and minor amounts of ashless dispersant, metal-containing detergent, viscosity index improver and zinc dihydrocarbyl phosphorodithioate additives, the improvement which comprises including in said composition as a fuel economy additive, a minot but at least friction-reducing amount in the range of about 0.2 to about 3 wt. % of an oil-soluble friction reducing polyepoxidized fatty acid ester selected from the group consisting of: methyl ester of soya bean fatty acids, C 1 to C 12 monohydric alcohol ester of linseed oil fatty acids, soya bean oil and linseed oil.
Claim 2
Dependent Claim
103 words
In a lubricating motor oil composition comprising a major amount of a mineral lubricating oil and minor amounts of ashless dispersant, metal-containing detergent, viscosity index improver and zinc dihydrocarbyl phosphorodithioate additives, the improvement which comprises including in said composition as a fuel economy additive, a minot but at least friction-reducing amount in the range of about 0.2 to about 3 wt. % of an oil-soluble friction reducing polyepoxidized fatty acid ester selected from the group consisting of: methyl ester of soya bean fatty acids, C 1 to C 12 monohydric alcohol ester of linseed oil fatty acids, soya bean oil and linseed oil.
Claim 3
Dependent Claim
51 words
In a lubricating composition according to claim 1 wherein said oil has a viscosity (as measured by ASTM D-445) of from about 2 to 40 centistokes at 99° C. and said fatty acid ester is present in amount which provides between 0.01 to 1.00 percent of oxirane oxygen in said composition.
Claim 4
Dependent Claim
21 words
In a lubricating composition according to claim 1 wherein said ester is said methyl ester of soya bean oil fatty acids.
Claim 5
Dependent Claim
19 words
In a lubricating composition according to claim 1 wherein said ester is said ester of linseed oil fatty acids.
Claim 6
Dependent Claim
14 words
In a lubricating composition according to claim 2 wherein said R 2 is methyl.
Claim 7
Dependent Claim
75 words
An automotive SAE 10W/30 lubricating oil composition for gasoline engines comprising a major amount of mineral lubricating oil and containing an ashless dispersant, a metal-containing detergent, a viscosity index improver, and zinc dihydrocarbyl phosphorodithioate, which oil has been improved so as to give increased fuel economy when used in a gasoline engine, by the addition of about 0.5 weight percent of epoxidized methyl ester of linseed oil fatty acid having about 9 wt% oxirane oxygen.
Claim 8
Dependent Claim
75 words
An automotive SAE 10W/30 lubricating oil composition for gasoline engines comprising a major amount of mineral lubricating oil and containing an ashless dispersant, a metal-containing detergent, a viscosity index improver, and zinc dihydrocarbyl phosphorodithioate, which oil has been improved so as to give increased fuel economy when used in a gasoline engine, by the addition of about 0.5 weight percent of epoxidized methyl ester of linseed oil fatty acid having about 9 wt% oxirane oxygen.
Claim 9
Independent Claim
67 words
A method of improving the operation of an automotive gasoline engine having a lubricating system by using as the lubricant a motor oil comprising a major amount of mineral lubricating oil, an ashless dispersant, a metal-containing detergent, a viscosity index improver and zinc dihydrocarbyl phosphorodithioate, and containing as a fuel economy additive epoxidized methyl ester of linseed oil fatty acid having about 9 wt% of ozirane oxygen.
Claim 10
Independent Claim
67 words
A method of improving the operation of an automotive gasoline engine having a lubricating system by using as the lubricant a motor oil comprising a major amount of mineral lubricating oil, an ashless dispersant, a metal-containing detergent, a viscosity index improver and zinc dihydrocarbyl phosphorodithioate, and containing as a fuel economy additive epoxidized methyl ester of linseed oil fatty acid having about 9 wt% of ozirane oxygen.
Claim 11
Dependent Claim
15 words
In a lubricating composition according to claim 1, wherein said ester is soya bean oil.
Claim 12
Dependent Claim
14 words
In a lubricating composition according to claim 1, wherein said ester is linseed oil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |