US3850826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives
Assignee: Chevron USA Inc
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Filing: 1973-02-20
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Granted: 1974-11-26
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Expires: 1993-02-20
Abstract
Abstract A new class of lubricating oil additives is provided. The class consists of cooligomers of C30-C300 hydrocarbyl-substituted succinic acids and polysecondary amines which are subsequently reacted with polyisocyanate.
Inventors
- 👤 Vries L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:20
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/60; C08G18/603; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/04; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/108; C10M2209/109; C10M2217/00; C10M2217/02; C10M2217/04; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
ALUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY AND IN AN AMOUNT SUFFICIENT TO PROVIDE DISPERSANCY: THE REACTION PRODUCT OF AN ALKYL, ARYL OR ALKARYL POLYISOCYANATE WITH A COOLIGOMER IN A MOL RATION OF ABOUT 0.4-1:1 AT A TEMPERATURE OF ABOUT 0*-200*C; SAID COOLIGOMER IS THE REACTION PRODUCT OF A HYDROCARBYLSUBSTITUTED SUCCINIC ACID OR ANHYDRIDE, WHEREIN THE HYDROCARBYL GROUP CONTAINS AT LEAST 30 CARBON ATOMS, WITH A POLYSECONDARY HYDROCARBYL AMINE CONTAINING FROM 2 TO 12 AMINO NITROGEN ATOMS, NONE OF WHICH IS A PRIMARY AMINO NITROGEN ATOM AND AT LEAST TWO OF WHICH ARE SECONDARY AMINO NITROGEN ATOMS, IN A MOL RATIO OF ABOUT 1:1-2 AT A TEMPERATURE OF 100*-200*C.
Claim 2
Dependent Claim
115 words
ALUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OIL OF LUBRICATING VISCOSITY AND IN AN AMOUNT SUFFICIENT TO PROVIDE DISPERSANCY: THE REACTION PRODUCT OF AN ALKYL, ARYL OR ALKARYL POLYISOCYANATE WITH A COOLIGOMER IN A MOL RATION OF ABOUT 0.4-1:1 AT A TEMPERATURE OF ABOUT 0*-200*C; SAID COOLIGOMER IS THE REACTION PRODUCT OF A HYDROCARBYLSUBSTITUTED SUCCINIC ACID OR ANHYDRIDE, WHEREIN THE HYDROCARBYL GROUP CONTAINS AT LEAST 30 CARBON ATOMS, WITH A POLYSECONDARY HYDROCARBYL AMINE CONTAINING FROM 2 TO 12 AMINO NITROGEN ATOMS, NONE OF WHICH IS A PRIMARY AMINO NITROGEN ATOM AND AT LEAST TWO OF WHICH ARE SECONDARY AMINO NITROGEN ATOMS, IN A MOL RATIO OF ABOUT 1:1-2 AT A TEMPERATURE OF 100*-200*C.
Claim 3
Dependent Claim
24 words
A lubricating oil composition according to claim 1 wherein said polysecondary amine is a disecondary amine containing from 2 to 6 amino nitrogen atoms.
Claim 4
Dependent Claim
14 words
A lubricating oil composition according to claim 1 wherein said polyisocyanate is toluene diisocyanate.
Claim 5
Dependent Claim
23 words
A lubricating oil composition according to claim 1 wherein said hydrocarbyl substituent is polybutenyl or polypropenyl of from 30 to 300 carbon atoms.
Claim 6
Dependent Claim
30 words
A lubricating oil composition according to claim 1 wherein said polysecondary amine is selected from the group consisting of ethylene dipiPerazine, tetramethyl triethylene tetramine, bis(N-piperazyl)propane, trimethyl diethylene triamine, and piperazine.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |