US4282007A
Expired / Lapsed
US
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Novel fuel composition containing alcohol
Assignee: Texaco Inc
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Filing: 1980-09-22
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Granted: 1981-08-04
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Expires: 2000-09-22
Abstract
Abstract A novel fuel composition contains ethanol or gasohol plus, as a corrosion inhibitor, a reaction product of aminotriazole and polyisobutenyl succinic acid anhydride.
Inventors
- 👤 Rodney L. Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10L1/02; C10L1/023
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
71 words
A fuel composition for internal combustion engines comprising (a) a major portion of a fuel containing (i) at least one alcohol selected from the group consisting of ethanol and methanol and (ii) gasoline in amount of 0-50 volumes per volume of alcohol; and (b) a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of (i) C 15 -C 30 hydrocarbyl succinic acid anhydride and (ii) aminotriazole.
Claim 2
Dependent Claim
71 words
A fuel composition for internal combustion engines comprising (a) a major portion of a fuel containing (i) at least one alcohol selected from the group consisting of ethanol and methanol and (ii) gasoline in amount of 0-50 volumes per volume of alcohol; and (b) a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of (i) C 15 -C 30 hydrocarbyl succinic acid anhydride and (ii) aminotriazole.
Claim 3
Dependent Claim
18 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is an alcohol.
Claim 4
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is methanol.
Claim 5
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is ethanol.
Claim 6
Dependent Claim
19 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is a commercial ethanol.
Claim 7
Dependent Claim
21 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is a commercial ethanol containing acid.
Claim 8
Dependent Claim
22 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is a commercial ethanol containing acetic acid.
Claim 9
Dependent Claim
18 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is a gasohol.
Claim 10
Dependent Claim
18 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel is substantially anhydrous.
Claim 11
Dependent Claim
22 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said fuel contains less than 0.3 v % water.
Claim 12
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotrazole is 3-amino-1H-1,2,4-triazole.
Claim 13
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotriazole is 4-amino-4H-1,2,4-triazole.
Claim 14
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotriazole is 5-amino-1H-1,2,4-triazole.
Claim 15
Dependent Claim
21 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said hydrocarbyl succinic anhydride is polyisobutenyl succinic anhydride.
Claim 16
Dependent Claim
33 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said reaction product is present in minor corrosion inhibiting amount of 0.0001 w %-0.01 w % of said fuel composition.
Claim 17
Dependent Claim
45 words
A fuel composition for internal combustion engines comprising (a) a major portion of a fuel containing absolute ethanol; and (b) a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of polyisobutenyl (M n of 300-3000) succinic acid anhydride and 3-aminotriazole.
Claim 18
Dependent Claim
45 words
A fuel composition for internal combustion engines comprising (a) a major portion of a fuel containing absolute ethanol; and (b) a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of polyisobutenyl (M n of 300-3000) succinic acid anhydride and 3-aminotriazole.
Claim 19
Dependent Claim
20 words
A fuel composition for internal combustion engines as claimed in claim 16 wherein said molecular weight M n is 300-1400.
Claim 20
Dependent Claim
33 words
A fuel composition for internal combustion engines as claimed in claim 16 wherein said reaction product is present in minor corrosion inhibiting amount of 0.0001 w %-0.001 w % of said fuel composition.
Claim 21
Independent Claim
62 words
The method which comprises adding to a fuel containing (i) at least one alcohol selected from the group consisting of ethanol and methanol and (ii) gasoline in amount of 0-50 volumes per volume of alcohol, a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of (i) C 15 -C 30 hydrocarbyl succinic acid anhydride and (iii) aminotriazole.
Claim 22
Independent Claim
62 words
The method which comprises adding to a fuel containing (i) at least one alcohol selected from the group consisting of ethanol and methanol and (ii) gasoline in amount of 0-50 volumes per volume of alcohol, a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of (i) C 15 -C 30 hydrocarbyl succinic acid anhydride and (iii) aminotriazole.
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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |