US4370247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear and axle oil composition
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-07-28
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Granted: 1983-01-25
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Expires: 2001-07-28
Abstract
Abstract A gear and axle oil composition comprises (a) conventional gear/axle grade mineral oil; (b) a polyoxyalkylene glycol of viscosity from 5 to 30 cSt at 100 DEG C.; and (c) at least one di-C8 to C12 alkyl ester of a dicarboxylic acid. The mineral oil component is never greater than 50 mass % of the total composition. Power loss due to friction is decreased, giving useful fuel saving.
Inventors
- 👤 Marcel A. Ostyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:03
CPC Classifications
C; C10; C10M; C10M111/00; C10M111/04; C10M2203/00; C10M2203/06; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/06; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2211/00; C10M2211/08; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
163 words
A lubricating oil composition suitable for use as a gear oil or an axle oil comprising: (a) from 5 to 50 mass % of mineral oil of conventional gear oil or axle oil grade; (b) from 5 to 30 mass % in total of at least one polyoxyalkylene glycol having a viscosity of from 5 to 30 cSt at 100° C.; (c) from 25 to 60 mass % in total of at least one di-C 8 to C 12 alkyl ester of a dicarboxylic acid; (d) from 0 to 15 mass % in total of at least one conventional extreme pressure agent: (e) from 0 to 8 mass % in total of at least one conventional VI improver; and (f) from 0 to 5 mass % of at least one conventional pour point depressant; the components (a) to (f) totalling together 100 mass %, and said components (a) to (f) also representing at least 95 mass % of the whole lubricating oil composition.
Claim 2
Dependent Claim
163 words
A lubricating oil composition suitable for use as a gear oil or an axle oil comprising: (a) from 5 to 50 mass % of mineral oil of conventional gear oil or axle oil grade; (b) from 5 to 30 mass % in total of at least one polyoxyalkylene glycol having a viscosity of from 5 to 30 cSt at 100° C.; (c) from 25 to 60 mass % in total of at least one di-C 8 to C 12 alkyl ester of a dicarboxylic acid; (d) from 0 to 15 mass % in total of at least one conventional extreme pressure agent: (e) from 0 to 8 mass % in total of at least one conventional VI improver; and (f) from 0 to 5 mass % of at least one conventional pour point depressant; the components (a) to (f) totalling together 100 mass %, and said components (a) to (f) also representing at least 95 mass % of the whole lubricating oil composition.
Claim 3
Dependent Claim
91 words
A lubricating oil composition is claimed in claim 1, comprising: from 10 to 40 mass % of component (a), from 10 to 20 mass % of component (b), from 30 to 35 mass % of component (c), from 2 to 10 mass % of component (d), from 2 to 5 mass % of component (e), and from 0.1 to 3 mass % of component (f); the components (a) to (f) totalling together 100 mass %, and said components representing forming at least 95 mass % of the whole lubricating oil composition.
Claim 4
Dependent Claim
45 words
A lubricating oil composition as claimed in claim 1 or claim 2 and containing 0 to 5 mass % in total of one or more conventional lubricating oil additives selected from the group consisting of anti-corrosion agents, antioxidants, seal-swellants, de-odourizers, dyes and fluorescent colouring agents.
Claim 5
Dependent Claim
24 words
A lubricating composition as claimed in claim 1, wherein the polyoxyalkylene glycol has a viscosity of from 20 to 25 cSt at 100° C.
Claim 6
Dependent Claim
26 words
A lubricating composition as claimed in claim 1, wherein the polyoxyalkylene glycol is selected from the group consisting of polyoxyethylene glycol, polyoxypropylene glycol and polyoxyethylene-polyoxypropylene glycol.
Claim 7
Dependent Claim
23 words
A lubricating oil composition as claimed in claim 1, wherein the said diester component (c) is a diester of an aliphatic dicarboxylic acid.
Claim 8
Dependent Claim
34 words
A lubricating oil composition as claimed in claim 6, wherein the diester is a diester of an aliphatic dicarboxylic acid of formula HOOC(CH 2 ) n COOH, where n is from 3 to 8.
Claim 9
Dependent Claim
29 words
A lubricating oil composition as claimed in claim 6, wherein the diester is selected from the group consisting of glutaric acid, adipic acid and mixtures of those two acids.
Claim 10
Dependent Claim
19 words
A lubricating oil composition as claimed in claim 1, wherein the said diester component (c) is of phthalic acid.
Claim 11
Dependent Claim
29 words
A lubricating oil composition as claimed in claim 1, wherein the said at least one extreme pressure agent, when employed, is at least one phosphorus- and sulphur-containing organic compound.
Claim 12
Dependent Claim
32 words
A lubricating oil composition as claimed in claim 1, wherein the at least one VI improver, when employed, is selected from the group consisting of styrene-butadiene copolymers, polymethacrylates, polyisobutenes and mixtures thereof.
Claim 13
Dependent Claim
36 words
A lubricating oil composition as claimed in claim 1, wherein the at least one pour point depressant, when employed, is selected from the group consisting of chlorinated wax-naphthalene condensates, vinyl acetate-fumarate ester copolymers and mixtures thereof.
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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) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |