US3900411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions containing acetal or ketal detergents
Assignee: Mobil Oil AS
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Filing: 1973-11-19
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Granted: 1975-08-19
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Expires: 1993-11-19
Abstract
Abstract Lubricant compositions are provided comprising an oil of lubricating viscosity and, in an amount sufficient to impart detergent properties, a carbonyl compound selected from the group consisting of acetals and ketals.
Inventors
- 👤 Jr Harry J Andress
- 👤 Henry Ashjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:44
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/287; C10M2207/289; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
49 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY AND, IN AN AMOUNT SUFFICIENT TO IMPART DETERGENT PROPERTIES, A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKENYLSUCCINIC ACID-POLYHYDRIC ALCOHOL ESTER ACETALS OR KETALS, WHEREIN THE ALKENYL GROUP CONTAINS AT LEAST ABOUT 30 CARBON ATOMS.
Claim 2
Dependent Claim
49 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY AND, IN AN AMOUNT SUFFICIENT TO IMPART DETERGENT PROPERTIES, A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKENYLSUCCINIC ACID-POLYHYDRIC ALCOHOL ESTER ACETALS OR KETALS, WHEREIN THE ALKENYL GROUP CONTAINS AT LEAST ABOUT 30 CARBON ATOMS.
Claim 3
Dependent Claim
26 words
A lubricant composition as defined in claim 1 wherein said carbonyl compound is present in an amount from about 1 to about 10 percent, by weight.
Claim 4
Dependent Claim
26 words
A lubricant composition as defined in claim 1 wherein said carbonyl compound is present in an amount from about 2 to about 6 percent, by weight.
Claim 5
Dependent Claim
28 words
A lubricant composition as defined in claim 1 wherein said oIl of lubricating viscosity comprises a liquid hydrocarbon boiling within the range from about 75*F. to about 1000*F.
Claim 6
Dependent Claim
57 words
A lubricant composition as defined in claim 1 wherein said carbonyl compound has been prepared by reacting an alkenylsuccinic anhydride with a polyhydric alcohol in equimolar amounts; reacting the ester thus formed with a compound selected from the group consisting of aldehydes and ketones to form the corresponding acetal or ketal; and removing water formed during reaction.
Claim 7
Dependent Claim
23 words
A lubricant composition as defined in claim 5 wherein said reaction is carried out at a temperature from about 100*C. to about 200*C.
Claim 8
Dependent Claim
23 words
A lubricant composition as defined in claim 5 wherein said reaction is carried out at a temperature from about 140*C. to about 180*C.
Claim 9
Dependent Claim
21 words
A lubricant composition as defined in claim 1 wherein said alkenylsuccinic anhydride contains from about 30 to about 500 carbon atoms.
Claim 10
Dependent Claim
14 words
A lubricant composition as defined in claim 1 wherein the alcohol is trimethylol propane.
Claim 11
Dependent Claim
13 words
A lubricant composition as defined in claim 1 wherein the alcohol is pentaerythritol.
Claim 12
Dependent Claim
13 words
A lubricant composition as defined in claim 1 wherein the aldehyde is formaldehyde.
Claim 13
Dependent Claim
13 words
A lubricant composition as defined in claim 1 wherein the aldehyde is salicylaldehyde.
Claim 14
Dependent Claim
13 words
A lubricant composition as defined in claim 1 wherein the aldehyde is glyoxal.
Claim 15
Dependent Claim
14 words
A lubricant composition as defined in claim 1 wherein the ketone is diacetone alcohol.
Claim 16
Dependent Claim
13 words
A lubricant composition as defined in claim 1 wherein the ketone is benzoin.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |