US4294585A
Expired / Lapsed
US
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Novel fuel composition for internal combustion engine
Assignee: Texaco Inc
•
Filing: 1980-09-22
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Granted: 1981-10-13
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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 aminotetrazole, formaldehyde, and an N-alkyl propylene diamine.
Inventors
- 👤 Rodney L. Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:46
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07D257/06; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
101 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) an aminotetrazole, (ii) a ketone or an aldehyde, and (iii) a C 3 -C 12 poly-primary amine bearing at least one free --NH 2 group and at least one --NHR' group wherein R' is a C 12 -C 18 hydrocarbon group.
Claim 2
Dependent Claim
101 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) an aminotetrazole, (ii) a ketone or an aldehyde, and (iii) a C 3 -C 12 poly-primary amine bearing at least one free --NH 2 group and at least one --NHR' group wherein R' is a C 12 -C 18 hydrocarbon group.
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 aminotetrazole is 5-amino-tetrazole.
Claim 13
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotetrazole is 1-amino-tetrazole.
Claim 14
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotetrazole is 2-amino-tetrazole.
Claim 15
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotetrazole is 3-amino-tetrazole.
Claim 16
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aldehyde is formaldehyde.
Claim 17
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aldehyde is acetaldehyde.
Claim 18
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aldehyde is benzaldehyde.
Claim 19
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said ketone is acetone.
Claim 20
Dependent Claim
19 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said ketone is methyl ethyl ketone.
Claim 21
Dependent Claim
17 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said ketone is acetophenone.
Claim 22
Dependent Claim
18 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said amine is a diamine.
Claim 23
Dependent Claim
22 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said amine is a diamine containing an --NHR group.
Claim 24
Dependent Claim
42 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said amine is R'--NH--R"--NH 2 , R" is alkylene, arylene, alkarylene, arylene, or cycloalkylene hydrocarbon and R is C 12 -C 18 alkyl, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon.
Claim 25
Dependent Claim
32 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said amine is R'--NH--CH 2 CH 2 CH 2 NH 2 and R' is C 12 -C 18 alkyl.
Claim 26
Dependent Claim
39 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said aminotetrazole is 5-amino-tetrazole, said aldehyde is formaldehyde, and said amine is R'NHCH 2 CH 2 CH 2 NH 2 and R' is oleoyl or tallowyl.
Claim 27
Dependent Claim
34 words
A fuel composition for internal combustion engines as claimed in claim 1 wherein said corrosion inhibiting agent is present in minor corrosion inhibiting amount of 0.0001 w %-0.01 w % of said fuel composition.
Claim 28
Dependent Claim
64 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, 0.0001 w %-0.01 w % of said fuel composition, of as a corrosion inhibiting agent, a reaction product of 5-amino-tetrazole, formaldehyde, and R'NHCH 2 CH 2 CH 2 NH 2 wherein R' is C 12 -C 18 alkyl hydrocarbon.
Claim 29
Dependent Claim
64 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, 0.0001 w %-0.01 w % of said fuel composition, of as a corrosion inhibiting agent, a reaction product of 5-amino-tetrazole, formaldehyde, and R'NHCH 2 CH 2 CH 2 NH 2 wherein R' is C 12 -C 18 alkyl hydrocarbon.
Claim 30
Dependent Claim
49 words
A composition comprising a reaction product of (i) an aminotetrazole, (ii) a ketone or an aldehyde, and (iii) a C 3 -C 12 poly-primary amine bearing at least one free --NH 2 group and at least one --NHR' group wherein R' is a C 12 -C 18 hydrocarbon group.
Claim 31
Dependent Claim
49 words
A composition comprising a reaction product of (i) an aminotetrazole, (ii) a ketone or an aldehyde, and (iii) a C 3 -C 12 poly-primary amine bearing at least one free --NH 2 group and at least one --NHR' group wherein R' is a C 12 -C 18 hydrocarbon group.
Claim 32
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aminotetrazole is 5-amino-tetrazole.
Claim 33
Dependent Claim
12 words
A composition as claimed in claim 29 wherein said aminotetrazole is 1-amino-tetrazole.
Claim 34
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aminotetrazole is 2-amino-tetrazole.
Claim 35
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aminotetrazole is 3-amino-tetrazole.
Claim 36
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aldehyde is formaldehyde.
Claim 37
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aldehyde is acetaldehyde.
Claim 38
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said aldehyde is benzaldehyde.
Claim 39
Dependent Claim
12 words
A composition as claimed in claim 28 wherein said ketone is acetone.
Claim 40
Dependent Claim
14 words
A composition as claimed in claim 28 wherein said ketone is methyl ethyl ketone.
Claim 41
Dependent Claim
11 words
Acomposition as claimed in claim 28 wherein said ketone is acetophenone.
Claim 42
Dependent Claim
13 words
A composition as claimed in claim 28 wherein said amine is a diamine.
Claim 43
Dependent Claim
17 words
A composition as claimed in claim 28 wherein said amine is a diamine containing an --NHR' group.
Claim 44
Dependent Claim
37 words
A composition as claimed in claim 28 wherein said amine is R'--NH--R"--NH 2 , R" is alkylene, arylene, alkarylene, arylene, or cycloalkylene hydrocarbon and R' is C 12 -C 18 alkyl, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon.
Claim 45
Dependent Claim
27 words
A composition as claimed in claim 28 wherein said amine is R'--NH--CH 2 CH 2 CH 2 NH 2 and R' is C 12 -C 18 alkyl.
Claim 46
Dependent Claim
32 words
A composition as claimed in claim 28 wherein said aminotetrazole is 5-amino-tetrazole, said aldehyde is formaldehyde, and said amine is R'NHCH 2 CH 2 NH 2 and R' is oleoyl or tallowyl.
Claim 47
Dependent Claim
29 words
A composition as claimed in claim 28 wherein said corrosion inhibiting agent is present in minor corrosion inhibiting amount of 0.0001 w %-0.01 w % of said fuel composition.
Claim 48
Dependent Claim
28 words
A composition comprising a reaction product of 5-amino-tetrazole, formaldehyde, and R'NHCH 2 CH 2 CH 2 NH 2 wherein R' is a C 12 -C 18 alkyl hydrocarbon.
Claim 49
Dependent Claim
28 words
A composition comprising a reaction product of 5-amino-tetrazole, formaldehyde, and R'NHCH 2 CH 2 CH 2 NH 2 wherein R' is a C 12 -C 18 alkyl hydrocarbon.
Claim 50
Dependent Claim
14 words
##STR2## wherein R' is a C 12 -C 18 straight chain alkyl hydrocarbon group.
Claim 51
Dependent Claim
14 words
##STR2## wherein R' is a C 12 -C 18 straight chain alkyl hydrocarbon group.
References Cited (Backward Citations)
US3316176A
Cited
US3752764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |