Patent US4376712A successfully refreshed from Google Patents.
US4376712A
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Friction reducing additives and compositions thereof
Assignee: Mobil Oil AS
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Filing: 1981-10-15
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Granted: 1983-03-15
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Expires: 2001-10-15
Abstract
Abstract Borated sorbitan esters provide effective friction reducing properties for lubricating fluids when incorporated therein.
Inventors
- 👤 Andrew G. Horodysky
- 👤 Joan M. Kaminski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
C; C10; C10M; C10M139/00; C10M2205/00; C10M2205/02; C10M2205/028; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/062; C10N; C10N2040/00; C10N2040/06; C10N2040/08
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
67 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or grease prepared therefrom and a minor effective amount of an additive having friction reducing, anticorrosion, and antioxidant properties comprising a borated sorbitan mono-, di- or triester or mixture of such borated sorbitan esters wherein the ester group or groups thereof comprise a hydrocarbyl radical having from about 10 to about 30 carbon atoms.
Claim 2
Dependent Claim
67 words
A lubricant composition comprising a major proportion of an oil of lubricating viscosity or grease prepared therefrom and a minor effective amount of an additive having friction reducing, anticorrosion, and antioxidant properties comprising a borated sorbitan mono-, di- or triester or mixture of such borated sorbitan esters wherein the ester group or groups thereof comprise a hydrocarbyl radical having from about 10 to about 30 carbon atoms.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the additive is borated sorbitan monooleate.
Claim 4
Dependent Claim
23 words
The composition of claim 2 wherein said additive is derived from about 1 to 1 molar ratio of sorbitan monooleate and boric acid.
Claim 5
Dependent Claim
24 words
The composition of claim 2 wherein said additive is derived from about a 1 to 12/3 molar ratio of sorbitan monooleate to boric acid.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the additive is borated sorbitan dioleate.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the additive is borated sorbitan monolaurate.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein said additive is derived from a mixture of borated sorbitan esters.
Claim 9
Dependent Claim
16 words
The composition of claim 7 wherein said mixture comprises borated sorbitan monooleate and borated sorbitan dioleate.
Claim 10
Dependent Claim
22 words
The composition of claim 1 wherein said oil is selected from mineral oils, synthetic oils or mixtures of mineral and synthetic oil.
Claim 11
Dependent Claim
12 words
The composition of claim 9 wherein the oil is a mineral oil.
Claim 12
Dependent Claim
12 words
The composition of claim 9 wherein the oil is a synthetic oil.
Claim 13
Dependent Claim
11 words
The composition of claim 1 wherein said lubricant is a grease.
Claim 14
Dependent Claim
29 words
An unsaturated borated sorbitan mono-, di- or triester, or mixtures thereof, wherein the ester group or groups thereof comprise a hydrocarbyl radical having from 10 to 30 carbon atoms.
Claim 15
Dependent Claim
29 words
An unsaturated borated sorbitan mono-, di- or triester, or mixtures thereof, wherein the ester group or groups thereof comprise a hydrocarbyl radical having from 10 to 30 carbon atoms.
Claim 16
Dependent Claim
13 words
The borated ester of claim 13 wherein said compound is borated sorbitan monooleate.
Claim 17
Dependent Claim
13 words
The borated ester of claim 13 wherein said compound is borated sorbitan dioleate.
Claim 18
Dependent Claim
17 words
The borated ester of claim 13 comprising a mixture of borated sorbitan monooleate and borated sorbitan dioleate.
Claim 19
Dependent Claim
26 words
A method of reducing fuel consumption in an internal combustion engine comprising treating the moving surfaces thereof with a lubricant composition as described in claim 1.
Claim 20
Dependent Claim
13 words
The method of claim 17 wherein the borated ester is borated sorbitan monooleate.
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) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |