US3903003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions containing an amido-amine reaction product of a terminally carboxylated isoprene polymer
Assignee: Shell USA Inc
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Filing: 1974-03-06
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Granted: 1975-09-02
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Expires: 1994-03-06
Abstract
Abstract Lubricating oil compositions for internal combustion engines comprise a lubricant modified with an amido amine reaction product formed between certain carboxylated hydrogenated polyisoprenes and certain polyamines, imines (or ''''poly'''') and hydroxyl alkyl polyamines.
Inventors
- 👤 Zatis L Murphy
- 👤 Roland T Schlobohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08G; C08G81/00; C08G81/02; C08G81/024; C10M2205/00; C10M2205/04; C10M2205/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND 0.1-10% BY WEIGHT, SUFFICIENT TO RAISE THE VISCOSITY INDEX AND IMPART DETERGENCY TO THE OIL OF A HALOGEN-FREE NITROGEN-CONTAINING AMIDO AMINE REACTION PRODUCT OF A TERMINALLY CARBOXYLATED SUBSTANTIALLY COMPLETELY HYDROGENATED POLYISOPRENE CONTAINING LESS THAN 2% OF THE ORIGINAL OLEFINIC UNSATURATION AND HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 20,000 AND 250,000 AND A NITROGEN COMPOUND OF THE GROUP CONSISTING OF POLYALKYLENE AMINES AND HYDROXY ALKYL POLYALKYLENE AMINES, SAID REACTION PRODUCT RESULTING FROM HEATING THE HYDROGENATED CARBOXYLATED POLYISOPRENE AND NITROGEN COMPOUND FOR 15-480 MINUTES AT 175*-250*C.
Claim 2
Dependent Claim
97 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND 0.1-10% BY WEIGHT, SUFFICIENT TO RAISE THE VISCOSITY INDEX AND IMPART DETERGENCY TO THE OIL OF A HALOGEN-FREE NITROGEN-CONTAINING AMIDO AMINE REACTION PRODUCT OF A TERMINALLY CARBOXYLATED SUBSTANTIALLY COMPLETELY HYDROGENATED POLYISOPRENE CONTAINING LESS THAN 2% OF THE ORIGINAL OLEFINIC UNSATURATION AND HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 20,000 AND 250,000 AND A NITROGEN COMPOUND OF THE GROUP CONSISTING OF POLYALKYLENE AMINES AND HYDROXY ALKYL POLYALKYLENE AMINES, SAID REACTION PRODUCT RESULTING FROM HEATING THE HYDROGENATED CARBOXYLATED POLYISOPRENE AND NITROGEN COMPOUND FOR 15-480 MINUTES AT 175*-250*C.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein the reaction product is formed between monocarboxylated hydrogenated polyisoprene and a pentaethylene hexamine.
Claim 4
Dependent Claim
21 words
A composition according to claim 1 wherein the reaction product is formed between monocarboxylated hydrogenated polyisoprene and a hydroxy ethyldiethylene triamine.
Claim 5
Dependent Claim
35 words
A composition according to claim 1 wherein the carboxylated hydrogenated polyisoprene has an average molecular weight between about 23,000 and 80,000 and the nitrogen compound has an average molecular weight between about 150 and 1800.
Claim 6
Dependent Claim
17 words
A composition according to claim 1 containing in addition a power point depressing amount of a polymethacrylate.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |