US4282106A
Expired / Lapsed
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Low viscosity oils
Assignee: Ethyl Corp
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Filing: 1979-10-05
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Granted: 1981-08-04
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Expires: 1999-10-05
Abstract
Abstract An improved low viscosity (i.e.) 5 W to 71/2 W engine oil resistant to oxidation and consumption comprising a major portion of a lubricating oil stock, a sulfurized oil, a dispersant, an anti-corrosion agent, an anti-rust agent, a detergent, an anti-oxidant, and a viscosity index improver.
Inventors
- 👤 Luke A. Schaap
- 👤 John H. Udelhofen
- 👤 Samuel W. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:17
CPC Classifications
C; C10; C10M; C10M167/00; C10M101/00; C10M101/02; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/06; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
An internal combustion engine lubricating oil having a viscosity about 5W to 71/2W resistant to the consumption of the volatile, easily oxidized components which comprises a major portion of a suitable base oil and an amount of a sulfurized oil sufficient to reduce oil consumption, a dispersant, an anti-corrosion agent, an anti-rust agent, a detergent, an anti-oxidant, and a viscosity index improver.
Claim 2
Dependent Claim
62 words
An internal combustion engine lubricating oil having a viscosity about 5W to 71/2W resistant to the consumption of the volatile, easily oxidized components which comprises a major portion of a suitable base oil and an amount of a sulfurized oil sufficient to reduce oil consumption, a dispersant, an anti-corrosion agent, an anti-rust agent, a detergent, an anti-oxidant, and a viscosity index improver.
Claim 3
Dependent Claim
50 words
The lubricating oil of claim 1 wherein the sulfurized oil comprises a sulfurized fatty oil and is present at a concentration of about 0.1 to 5.0 parts by weight per one hundred parts by weight of the lubricating oil, and the viscosity index improver is a dispersant viscosity index improver.
Claim 4
Dependent Claim
133 words
A fully compounded internal combustion engine lubricating oil having a viscosity of about 5W to 71/2W resistant to the consumption of the volatile, easily oxidized components which comprises a suitable low viscosity base oil, and (a) about 0.1 to 5.0 parts by weight of a sulfurized oil; (b) about 1.0 to 10.0 parts by weight of a Mannich dispersant; (c) about 0.1 to 5.0 parts by weight of a zinc hydrocarbyldithiophosphate anti-corrosion agent; (d) about 0.1 to 5.0 parts by weight of an overbased magnesium sulfonate anti-rust detergent; (e) about 0.1 to 5.0 parts by weight of a neutral or overbased calcium sulfurized phenate anti-oxidant-detergent; (f) about 1.0 to 20.0 parts by weight of a viscosity index improver; each per 100 parts by weight of the fully compounded internal combustion engine lubricating oil.
Claim 5
Dependent Claim
133 words
A fully compounded internal combustion engine lubricating oil having a viscosity of about 5W to 71/2W resistant to the consumption of the volatile, easily oxidized components which comprises a suitable low viscosity base oil, and (a) about 0.1 to 5.0 parts by weight of a sulfurized oil; (b) about 1.0 to 10.0 parts by weight of a Mannich dispersant; (c) about 0.1 to 5.0 parts by weight of a zinc hydrocarbyldithiophosphate anti-corrosion agent; (d) about 0.1 to 5.0 parts by weight of an overbased magnesium sulfonate anti-rust detergent; (e) about 0.1 to 5.0 parts by weight of a neutral or overbased calcium sulfurized phenate anti-oxidant-detergent; (f) about 1.0 to 20.0 parts by weight of a viscosity index improver; each per 100 parts by weight of the fully compounded internal combustion engine lubricating oil.
Claim 6
Dependent Claim
26 words
The lubricating oil of claim 3 wherein the sulfurized oil is a sulfurized fatty oil, and the viscosity index improver is a dispersant viscosity index improver.
Claim 7
Dependent Claim
117 words
A lubricating oil concentrate for dilution with base oil to form a lubricating oil having a viscosity of about 5W to 71/2W which comprises a suitable low viscosity base oil, and (a) about 5.0 to 10.0 parts by weight of a sulfurized oil; (b) about 10.0 to 50.0 parts by weight of a Mannich dispersant; (c) about 20.0 to 5.0 parts by weight of a metal dihydrocarbyl dithiophosphate anti-corrosion agent; (d) about 20.0 to 5.0 parts by weight of an overbased alkaline earth metal sulfonate anti-rust detergent; (e) about 20.0 to 5.0 parts by weight of a neutral or overbased alkaline earth metal sulfurized phenate anti-oxidant detergent; each per 100 parts by weight of the oil concentrate.
Claim 8
Dependent Claim
117 words
A lubricating oil concentrate for dilution with base oil to form a lubricating oil having a viscosity of about 5W to 71/2W which comprises a suitable low viscosity base oil, and (a) about 5.0 to 10.0 parts by weight of a sulfurized oil; (b) about 10.0 to 50.0 parts by weight of a Mannich dispersant; (c) about 20.0 to 5.0 parts by weight of a metal dihydrocarbyl dithiophosphate anti-corrosion agent; (d) about 20.0 to 5.0 parts by weight of an overbased alkaline earth metal sulfonate anti-rust detergent; (e) about 20.0 to 5.0 parts by weight of a neutral or overbased alkaline earth metal sulfurized phenate anti-oxidant detergent; each per 100 parts by weight of the oil concentrate.
Claim 9
Dependent Claim
28 words
The low viscosity lubricating oil concentrate of claim 5 containing additionally 1.0 to 40.0 parts by weight of a viscosity index improver per 100 parts of the concentrate.
Claim 10
Dependent Claim
20 words
The low viscosity lubricating oil concentrate of claim 6 wherein the viscosity index improver is a dispersant viscosity index improver.
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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |