US3844965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives
Assignee: Chevron USA Inc
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Filing: 1972-10-05
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Granted: 1974-10-29
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Expires: 1992-10-05
Abstract
Abstract The reaction product of a C30-C200 hydrocarbylsubstituted amine, amide or cyclic imide lubricating oil ashless dispersant, with an organic polyisocyanate and a polyoxyalkylene polyol preferably in excess of 1,000 molecular weight, functions as a superior lubricating oil additive in the inhibition of engine rust.
Inventors
- 👤 S Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:31
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M2201/00; C10M2201/06; C10M2201/062; C10M2201/063; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2225/00; C10M2225/02; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL LUBRICATING VISCOSITY AND FROM 0.01 TO 5 PERCENT BY WEIGHT OF THE OIL-SOLUBLE REACTION PRODUCT PRODUCED BY CONTACTING A NITROGENOUS DISPERSANT CONTAINING AT LEAST ONE PRIMARY OR SECONDARY AMINO NITROGEN ATOM, WHICH IS A HYDROCARBYL-SUBSTITUTED HYDROCARBYL MONOAMINE, POLYAMINE OR SUCCINIMIDE WHEREIN SAID HYDROCARBYL SUBSTITUENT IS FROM ABOUT C30 TO ABOUT C200, A C3-C20 HYDROCARBYL POLYISOCYANATE, AND A POLYOXYALKYLENE POLYOL OF AT LEAST ABOUT 1,000 MOLECULAR WEIGHT IN THE RANGE OF MOL RATIOS OF NITROGENOUS DISPERSANT TO POLYISOCYANATE TO POLYOL OF ABOUT 0.5-5:0.75-6:1, NEAR OR IN AN INERT SOLVENT, AT A TEMPERATURE FROM ROOM TEMPERATURE TO THE TEMPERATURE OF SOLVENT REFULX.
Claim 2
Dependent Claim
110 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL LUBRICATING VISCOSITY AND FROM 0.01 TO 5 PERCENT BY WEIGHT OF THE OIL-SOLUBLE REACTION PRODUCT PRODUCED BY CONTACTING A NITROGENOUS DISPERSANT CONTAINING AT LEAST ONE PRIMARY OR SECONDARY AMINO NITROGEN ATOM, WHICH IS A HYDROCARBYL-SUBSTITUTED HYDROCARBYL MONOAMINE, POLYAMINE OR SUCCINIMIDE WHEREIN SAID HYDROCARBYL SUBSTITUENT IS FROM ABOUT C30 TO ABOUT C200, A C3-C20 HYDROCARBYL POLYISOCYANATE, AND A POLYOXYALKYLENE POLYOL OF AT LEAST ABOUT 1,000 MOLECULAR WEIGHT IN THE RANGE OF MOL RATIOS OF NITROGENOUS DISPERSANT TO POLYISOCYANATE TO POLYOL OF ABOUT 0.5-5:0.75-6:1, NEAR OR IN AN INERT SOLVENT, AT A TEMPERATURE FROM ROOM TEMPERATURE TO THE TEMPERATURE OF SOLVENT REFULX.
Claim 3
Dependent Claim
30 words
A lubricating oil composition according to claim 1 wherein the hydrocarbyl substituent is a polyolefin derived from C2-C6 monoolefins, with the proviso that ethylene is copolymerized with a higher olefin.
Claim 4
Dependent Claim
23 words
A lubricatIng oil composition according to claim 1 wherein the hydrocarbyl-substituted hydrocarbyl polyamine is an alkylene polyamine of from 2-10 amino nitrogen atoms.
Claim 5
Dependent Claim
27 words
A lubricating oil composition according to claim 1 wherein the hydrocarbyl-substituted succinimide is an imide of an alkylene polyamine of from 2 to 10 amino nitrogen atoms.
Claim 6
Dependent Claim
16 words
A lubricating oil composition according to claim 2 wherein the hydrocarbyl substituent is polyisobutenyl or polyisopropenyl.
Claim 7
Dependent Claim
20 words
A lubricating oil composition according to claim 3 wherein the alkylene polyamine is an ethylene polyamine or a propylene polyamine.
Claim 8
Dependent Claim
48 words
A lubricating oil composition according to claim 6 wherein the ethylene polyamine is selected from the group consisting of ethylene diamine, diethylene triamine, triethylene tetramine and tetraethylene pentamine, and the propylene polyamine is selected from the group consisting of propylene diamine, dipropylene triamine, tripropylene tetramine and tetrapropylene pentamine.
Claim 9
Dependent Claim
26 words
A lubricating oil composition according to claim 1 wherein the said polyisocyanate is selected from the group consisting of toluene diisocyanate, phenylene diisocyanate and methylene diisocyanate.
Claim 10
Dependent Claim
46 words
A lubricating oil composition according to claim 1 wherein the polyoxyalkylene polyol is a block copolymer of ethylene oxide and propylene oxide units having a total molecular weight of at least about 4,500, and having a mol percent of ethylene oxide in the range 5-15 percent.
Claim 11
Dependent Claim
29 words
A lubricating oil composition according to claim 1 wherein the polyoxyalkylene polyol is a polyoxyalkylenated polyhydric alcohol wherein the polyhydric alcohol is of from 1 to 10 carbon atoms.
Claim 12
Dependent Claim
23 words
A lubricating oil composition according to claim 10 wherein the polyhydric alcohol is selected from the group consisting of pentaerythritol, sorbitol, and glycerol.
Claim 13
Dependent Claim
19 words
A lubricating oil composition according to claim 1 wherein said hydrocarbyl-substituted succinimide is a polyisobutenyl bis-succinimide of triethylene tetramine.
References Cited (Backward Citations)
US3045042A
Cited
US3496249A
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US3367943A
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US3525693A
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US3509052A
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US3573205A
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |