US3862981A
Expired / Lapsed
US
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New lubricating oil additives
Assignee: Rhone Progil SA
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Filing: 1972-06-28
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Granted: 1975-01-28
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Expires: 1992-06-28
Abstract
Abstract New lubricating oil additives are provided comprising the reaction product of diphenylolpropane with an aliphatic chain substituted-succinic anhydride or acid, which aliphatic chain substituent is substantially saturated and contains at least about 30 carbon atoms, said reaction product being neutralized with an amine, preferably a polyamine, such as a polyalkylenepolyamine. Lubricating oils, fuel oils, and carburants containing the new additives have excellent detergent, dispersing and anti-rust properties.
Inventors
- 👤 Bernard Demoures
- 👤 Daniel Llauro
- 👤 Francois Giolito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:24
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/283; C10M2207/287; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
An additive in accordance with claim 1, wherein said polyamine is a polyalkylenepolyamine.
Claim 2
Dependent Claim
24 words
An additive in accordance with claim 2, wherein said polyalkylenepolyamine is a member selected from the class consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine and pentaethylenehexamine.
Claim 3
Dependent Claim
15 words
An additive in accordance with claim 1, wherein said hydrocarbon substituent is a polyolefin radical.
Claim 4
Dependent Claim
16 words
An additive in accordance with claim 1, wherein said hydrocarbon substituent is a chlorinated polyolefin radical.
Claim 5
Dependent Claim
18 words
An additive in accordance with claim 1, wherein said hydrocarbon substituent contains at least about 50 carbon atoms.
Claim 6
Dependent Claim
29 words
An additive in accordance with claim 4, wherein said polyolefin radical is derived from a member of the class consisting of polyethylene, polypropylene, polybutylene, polyisobutylene, polypentene-1 and chlorinated polyolefins.
Claim 7
Dependent Claim
22 words
An additive in accordance with claim 1, wherein the esterification reaction is conducted at a temperature of between about 50* and 300*C.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |