US4249912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoamide fuel detergents
Assignee: Phillips Petroleum Co
•
Filing: 1978-04-27
•
Granted: 1981-02-10
•
Expires: 1998-04-27
Abstract
Abstract A detergent additive aminoamide, prepared by reacting a polycarboxylic amino acid with alkylamines, 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 aminoamide is further combined with a sulfonic acid to obtain a fuel detergent of improved operability.
Inventors
- 👤 Hans D. Holtz, deceased
- 👤 Benedict R. Bonazza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:50
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/16; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10L10/00; C10L10/04; C10M135/00; C10M135/08; C10M135/10; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/044
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 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 that is the reaction product of an aminoamide of the formula R".sub.2 N[(CH.sub.2).sub.a NR"].sub.b R" where a is 1 to 6, b is zero to 5, and R" is CH 2 CONHR' with R' a hydrocarbyl radical of about 8-100 carbon atoms and a sulfonic acid having the formula R'"SO 3 H where R'" is chosen from among an aryl and an alkaryl group with 6 to about 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 2
Independent Claim
128 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 that is the reaction product of an aminoamide of the formula R".sub.2 N[(CH.sub.2).sub.a NR"].sub.b R" where a is 1 to 6, b is zero to 5, and R" is CH 2 CONHR' with R' a hydrocarbyl radical of about 8-100 carbon atoms and a sulfonic acid having the formula R'"SO 3 H where R'" is chosen from among an aryl and an alkaryl group with 6 to about 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 3
Dependent Claim
26 words
The method of claim 1 wherein the ashless fuel detergent is present in an amount in the range of about 1-100 lbs/1000 barrels of hydrocarbon fuel.
Claim 4
Dependent Claim
10 words
A method according to claim 1 wherein b is zero.
Claim 5
Dependent Claim
12 words
A method according to claim 1 wherein b is 2 to 5.
Claim 6
Dependent Claim
31 words
A method according to claim 3 wherein said aminoamide is the reaction product of n-Nitrilotriacetic acid and an amine chosen from among the group consisting of phenylstearyl amine and oleyl amine.
References Cited (Backward Citations)
US2830019A
Cited
US2862883A
Cited
US2954342A
Cited
US3025240A
Cited
US3173770A
Cited
US3326975A
Cited
US3506712A
Cited
US3558630A
Cited
US3449097A
Cited
US3799981A
Cited
US3960937A
Cited
US3909427A
Cited
US3919094A
Cited
US3965084A
Cited
US3968151A
Cited
US4059535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |