Patent US4247300A successfully refreshed from Google Patents.
US4247300A
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Imidazoline fuel detergents
Assignee: Phillips Petroleum Co
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Filing: 1978-04-27
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Granted: 1981-01-27
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Expires: 1998-04-27
Abstract
Abstract A detergent additive imidazoline prepared by reacting carboxylic acid with polyamine is combined into fuel for an internal combustion engine or lubricating oil as a composition suitable for reducing deposits in an internal combustion engine. In an embodiment of the invention, the imidazoline is further combined with a sulfonic acid to obtain a fuel detergent of improved operability.
Inventors
- 👤 Benedict R. Bonazza
- 👤 Hans D. Holtz, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C07; C07D; C07D233/00; C07D233/04; C07D233/20; C07D233/24; C10L1/24; C10L1/2431; C10L1/2437; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C10M133/46; C10M135/00; C10M135/08; C10M135/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/22; C10M2215/223; C10M2215/224; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A composition comprising a hydrocarbon suitable as a fuel for an internal combustion engine and a detergent additive comprising the reaction product of an imidazoline of the formula ##STR2## wherein R is a hydrocarbyl radical of 7-99 carbon atoms, R' is hydrogen, alkyl or (CH 2 CH 2 NH) b H, a has a value of 0-10, and b has a value of 0-8 reacted with a sulfonic acid having the formula R"SO 3 H wherein R" is chosen from among an aryl and an alkaryl group with 6-100 carbon atoms.
Claim 2
Dependent Claim
91 words
A composition comprising a hydrocarbon suitable as a fuel for an internal combustion engine and a detergent additive comprising the reaction product of an imidazoline of the formula ##STR2## wherein R is a hydrocarbyl radical of 7-99 carbon atoms, R' is hydrogen, alkyl or (CH 2 CH 2 NH) b H, a has a value of 0-10, and b has a value of 0-8 reacted with a sulfonic acid having the formula R"SO 3 H wherein R" is chosen from among an aryl and an alkaryl group with 6-100 carbon atoms.
Claim 3
Independent Claim
130 words
A method for reducing engine deposits in an internal combustion engine comprising the addition to the hydrocarbon fuel for the engine of a detergent fuel additive comprising the reaction product of an imidazoline of the formula ##STR3## wherein R is a hydrocarbon radical of 7-99 carbon atoms, R' is hydrogen, alkyl or (CH 2 CH 2 NH) b H, a has a value of 0-10, and b has a value of 0-8 reated with a sulfonic acid having the formula R"SO 3 H wherein R" is chosen from among an aryl and an alkaryl group with 6-100 carbon atoms, said ashless fuel detergent being added in an amount effective to reduce engine deposits and using said hydrocarbon fuel with ashless fuel detergent additive as fuel in an internal combustion engine.
Claim 4
Independent Claim
130 words
A method for reducing engine deposits in an internal combustion engine comprising the addition to the hydrocarbon fuel for the engine of a detergent fuel additive comprising the reaction product of an imidazoline of the formula ##STR3## wherein R is a hydrocarbon radical of 7-99 carbon atoms, R' is hydrogen, alkyl or (CH 2 CH 2 NH) b H, a has a value of 0-10, and b has a value of 0-8 reated with a sulfonic acid having the formula R"SO 3 H wherein R" is chosen from among an aryl and an alkaryl group with 6-100 carbon atoms, said ashless fuel detergent being added in an amount effective to reduce engine deposits and using said hydrocarbon fuel with ashless fuel detergent additive as fuel in an internal combustion engine.
Claim 5
Dependent Claim
24 words
A method of claim 2 wherein said detergent fuel additive is present in the concentration range of about 1-100 lbs/1000 barrels of hydrocarbon fuel.
Claim 6
Dependent Claim
27 words
A composition of claim 1 in which said detergent additive is present in the concentration range of about 1-100 lbs/1000 barrels of hydrocarbon suitable as a fuel.
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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |