Patent US4244829A successfully refreshed from Google Patents.
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
•
Filing: 1978-03-07
•
Granted: 1981-01-13
•
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 13:03
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.
References Cited (Backward Citations)
US2992237A
Cited
US2900342A
Cited
US2897070A
Cited
US3294499A
Cited
US3287273A
Cited
DE1954452A1
Cited
GB1284512A
Cited
US4105571A
Cited
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 |