Patent US3980448A successfully refreshed from Google Patents.
US3980448A
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Organic compounds for use as fuel additives
Assignee: IFP Energies nouvelles
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Filing: 1973-05-02
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Granted: 1976-09-14
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Expires: 1993-05-02
Abstract
Abstract This invention relates to gasoline compositions containing additives which are reaction products of a maleic anhydride of the formula R1-C-CO PARALLEL PARALLEL ANGLE O PARALLEL R2-C-CO with a linear polyamine of the formula H2N-(CH2)n - NH]mR' in which R1 and R2 are selected from the group consisting of a hydrogen atom and a monovalent hydrocarbon radical of 1 - 30 carbon atoms, R' is a monovalent aliphatic hydrocarbon radical having 6 - 30 carbon atoms, n is an integer from 3 to 10 and m is an integer from 1 to 10.
Inventors
- 👤 Bernard Haemmerle
- 👤 Bernard Sillion
- 👤 Gabriel De Gaudemaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:34
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10L1/26; C10L1/2633; C10L1/2658; C10L1/234; C10L1/238; C10L1/2383
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
149 words
A fuel composition comprising a major amount of gasoline and, as an additive, an amount sufficient to result in an improvement of carburetor anti-fouling properties of said composition, of at least one imidic reaction product of a maleic anhydride of the formula ##EQU2## with a substantially equimolar quantity of a linear polyamine of the formula H.sub.2 N--(CH.sub.2).sub.n -- NH].sub.m R' in which R 1 and R 2 are selected from the group consisting of a hydrogen atom and an alkyl radical of 1-30 carbon atoms, the total number of carbon atoms of R 1 and R 2 being not more than 30, R' is an alkyl or alkenyl radical having 6-30 carbon atoms, n is an integer from 3 to 10 and m is an integer from 1 to 10, said reaction being conducted in an inert solvent and wherein the water resulting from the reaction is removed therefrom.
Claim 2
Dependent Claim
149 words
A fuel composition comprising a major amount of gasoline and, as an additive, an amount sufficient to result in an improvement of carburetor anti-fouling properties of said composition, of at least one imidic reaction product of a maleic anhydride of the formula ##EQU2## with a substantially equimolar quantity of a linear polyamine of the formula H.sub.2 N--(CH.sub.2).sub.n -- NH].sub.m R' in which R 1 and R 2 are selected from the group consisting of a hydrogen atom and an alkyl radical of 1-30 carbon atoms, the total number of carbon atoms of R 1 and R 2 being not more than 30, R' is an alkyl or alkenyl radical having 6-30 carbon atoms, n is an integer from 3 to 10 and m is an integer from 1 to 10, said reaction being conducted in an inert solvent and wherein the water resulting from the reaction is removed therefrom.
Claim 3
Dependent Claim
27 words
A fuel composition as defined by claim 1, wherein said reaction product represents from 10 to 250 parts per million of parts by weight of said gasoline.
Claim 4
Dependent Claim
82 words
A fuel composition as defined by claim 1, wherein said reaction product is in the form of its neutralization product with an amount of at least one acid compound selected from the group consisting of monoalkyl- and dialyky- phosphoric acids of the general formulae: ##STR4## in which R" is a monovalent radical of a saturated aliphatic hydrocarbon having from 8 to 18 carbon atoms, corresponding to a number of OH groups not higher than the number of amine groups of said compound.
Claim 5
Dependent Claim
27 words
A fuel composition as defined by claim 3, wherein said neutralization product represents, by weight, from 10 to 250 parts per million of parts of the gasoline.
Claim 6
Dependent Claim
33 words
A fuel composition as defined by claim 1, further comprising an amount of at least one naphthenic mineral oil sufficient to yield cleaning properties to said composition in combination with said reaction product.
Claim 7
Dependent Claim
27 words
A fuel composition as defined by claim 5, wherein said mineral oil represents, by weight, from 50 to 2000 parts per million of parts of the gasoline.
Claim 8
Dependent Claim
28 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are CH 3 , n is 3, m is 1, and R' is oleyl.
Claim 9
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are dodecyl, n is 3, m is 1, and R' is oleyl.
Claim 10
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 5, m is 1, and R' is stearyl.
Claim 11
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 8, m is 1, and R' is stearyl.
Claim 12
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 10, m is 1, and R' is oleyl.
Claim 13
Dependent Claim
30 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are C 2 H 5 , n is 3, m is 2, and R' is oleyl.
Claim 14
Dependent Claim
30 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are C 3 H 7 , n is 3, m is 5, and R' is oleyl.
Claim 15
Dependent Claim
30 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are C 6 H 13 , n is 3, m is 10, and R' is oleyl.
Claim 16
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 3, m is 1, and R' is hexyl.
Claim 17
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 3, m is 1, and R' is dodecyl.
Claim 18
Dependent Claim
26 words
A fuel composition as defined by claim 1, wherein R 1 and R 2 are H, n is 3, m is 1, and R' is eicosyl.
Claim 19
Dependent Claim
21 words
A fuel composition as defined by claim 3, wherein said acid compound is a mixture of mono- and di-octyl phosphoric acids.
Claim 20
Dependent Claim
36 words
The fuel composition of claim 1, wherein the inert solvent consists essentially of at least one aromatic hydrocarbon forming with water an azeotropic mixture, and the water resulting from the reaction is removed by azeotropic distillation.
Claim 21
Dependent Claim
16 words
A fuel composition according to claim 1, wherein maleic anhydride is reacted with N-oleyl propane diamine.
Claim 22
Dependent Claim
16 words
A fuel composition according to claim 1, wherein maleic anhydride is reacted with N-stearyl propane diamine.
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |