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US4394135A
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Liquid hydrocarbon fuel composition
Assignee: Mobil Oil AS
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Filing: 1980-06-06
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Granted: 1983-07-19
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Expires: 2000-06-06
Abstract
Abstract A fuel composition comprising a liquid hydrocarbon fuel and a detergent amount of the product of reaction between a polyamine and a stearic acid is described.
Inventors
- 👤 Harry J. Andress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:36
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A liquid hydrocarbon fuel composition comprising fuel and, as the sole detergent, a detergency amount of the product of reaction between phenylstearic acid and a polyamine of the formula NH.sub.2 --(C.sub.n H.sub.2n NH).sub.x --C.sub.n H.sub.2n --NH.sub.2 wherein n is from 2 to 4 and x is 1 to 9 and wherein the reactants and employed in proportions such that sufficient acid is present to completely acylate the said polyamine.
Claim 2
Dependent Claim
69 words
A liquid hydrocarbon fuel composition comprising fuel and, as the sole detergent, a detergency amount of the product of reaction between phenylstearic acid and a polyamine of the formula NH.sub.2 --(C.sub.n H.sub.2n NH).sub.x --C.sub.n H.sub.2n --NH.sub.2 wherein n is from 2 to 4 and x is 1 to 9 and wherein the reactants and employed in proportions such that sufficient acid is present to completely acylate the said polyamine.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the polyamine is tetraethylene pentamine.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein said detergency amount is from about 0.00025% to about 0.1% by weight.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |