US3864270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrohalogenated Polyalkene-Maleic Anhydride Reaction
Assignee: Texaco Inc
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Filing: 1973-07-09
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Granted: 1975-02-04
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Expires: 1993-07-09
Abstract
Abstract The reaction product of a dehydrohalogenated polyalkene and a maleic anhydride prepared by the method comprising halogenating polyalkene, dehydrohalogenating the resultant halogenated polyalkene and reacting the formed dehydrohalogenated polyalkene with maleic anhydride; the derivative of said reaction product and alkylene polyamine having detergent-dispersant properties in oil and hydrocarbon lubricating oil compositions containing said derivative.
Inventors
- 👤 William P Cullen
- 👤 Harry Chafetz
- 👤 Edward F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
C; C08; C08G; C08G69/00; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
23 words
The composition in accordance with claim 1 wherein said polyalkylene is polyisobutylene, said halogen is chlorine, and said alkylene polyamine is ethylene diamine.
Claim 2
Dependent Claim
22 words
The composition in accordance with claim 1 wherein said polyalkylene is polyisobutylene, said halogen is chlorine, and said alkylene polyamine is tetraethylenepentamine.
Claim 3
Dependent Claim
27 words
A composition in accordance with claim 1 wherein said nitrogenous detergent derivative is present in said composition in an amount of between 0.1 and 10 wt. percent.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |