US3926581A
Expired / Lapsed
US
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Fuel compositions and additive mixtures for reducing the plugging of exhaust gas catalysts
Assignee: Ethyl Corp
•
Filing: 1974-06-27
•
Granted: 1975-12-16
•
Expires: 1994-06-27
Abstract
Abstract Gasoline compositions and additive mixtures of esters of nitrilotriacetic acid, in amount sufficient to alleviate the plugging of certain catalysts being used in an engine exhaust system to lower the amount of undesirable constituents in exhaust gas from an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock.
Inventors
- 👤 Larry Plonsker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:38
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/14; C10L10/04; C10L10/06; C10L1/22; C10L1/222; C10L1/2222; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
58 words
AS A COMPOSITION OF MATTER, A GASOLINE FOR AN INTERNAL COMBUSTION ENGINE COMPRISING I. ABOUT 0.005-10 GMS OF MANGANESE PER GALLON AS A CYCOLOPENTADIENYL MANGANESE TRICARBONYL WHEREIN SAID CYLOPENTADIENYL GROUP IS A HYDROCARBON GROUP CONTAINING 5-17 CARBON ATOMS, AND II. AMOUNT SUFFICIENT TO REDUCE THE PLUGGING OF AN EXHAUST GAS CATALYST OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
58 words
AS A COMPOSITION OF MATTER, A GASOLINE FOR AN INTERNAL COMBUSTION ENGINE COMPRISING I. ABOUT 0.005-10 GMS OF MANGANESE PER GALLON AS A CYCOLOPENTADIENYL MANGANESE TRICARBONYL WHEREIN SAID CYLOPENTADIENYL GROUP IS A HYDROCARBON GROUP CONTAINING 5-17 CARBON ATOMS, AND II. AMOUNT SUFFICIENT TO REDUCE THE PLUGGING OF AN EXHAUST GAS CATALYST OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein each R is methyl.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein each R is ethyl.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein said cyclopentadienyl manganese tricarbonyl is methylcyclopentadienyl manganese tricarbonyl.
Claim 7
Dependent Claim
58 words
Gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock compound in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce the plugging of a noble metal exhaust gas catalyst, said compound having the general formula:
Claim 8
Dependent Claim
58 words
Gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock compound in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce the plugging of a noble metal exhaust gas catalyst, said compound having the general formula:
Claim 9
Dependent Claim
20 words
The gasoline of claim 6 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 10
Dependent Claim
10 words
The gasoline of claim 7 wherein each R is methyl.
Claim 11
Dependent Claim
10 words
The gasoline of claim 7 wherein each R is ethyl.
Claim 12
Dependent Claim
11 words
The gasoline of claim 6 wherein R is an aryl group.
Claim 13
Dependent Claim
19 words
The gasoline of claim 10 wherein said aryl group is a phenyl group of up to 10 carbon atoms.
Claim 14
Dependent Claim
72 words
A substantially lead-free gasoline for use with a noble metal exhaust gas purification catalyst, said gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce plugging of said noble metal exhaust gas purification catalyst, said compound having the general formula:
Claim 15
Dependent Claim
72 words
A substantially lead-free gasoline for use with a noble metal exhaust gas purification catalyst, said gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce plugging of said noble metal exhaust gas purification catalyst, said compound having the general formula:
Claim 16
Dependent Claim
20 words
The gasoline of claim 12 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 17
Dependent Claim
10 words
The gasoline of claim 12 wherein each R is methyl.
Claim 18
Dependent Claim
10 words
The gasoline of claim 12 wherein each R is ethyl.
Claim 19
Dependent Claim
11 words
The gasoline of claim 12 wherein R is an aryl group.
Claim 20
Dependent Claim
20 words
The gasoline of claim 16 wherein said aryl group is a phenyl group of up to about 10 carbon atoms.
Claim 21
Dependent Claim
69 words
A gasoline for use with a noble metal exhaust gas purification catalyst, said gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce the plugging of said noble metal exhaust gas catalyst, said compound having the formula:
Claim 22
Dependent Claim
69 words
A gasoline for use with a noble metal exhaust gas purification catalyst, said gasoline comprising i. a cyclopentadienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock in an amount sufficient to improve the antiknock characteristics of said gasoline, and ii. a compound in an amount sufficient to reduce the plugging of said noble metal exhaust gas catalyst, said compound having the formula:
Claim 23
Dependent Claim
40 words
As a composition of matter an additive fluid for low lead or essentially lead-free gasoline comprising a cyclopentodienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock, and a compound having the general formula:
Claim 24
Dependent Claim
40 words
As a composition of matter an additive fluid for low lead or essentially lead-free gasoline comprising a cyclopentodienyl manganese tricarbonyl wherein said cyclopentadienyl group is a hydrocarbon group containing 5-17 carbon atoms antiknock, and a compound having the general formula:
Claim 25
Dependent Claim
20 words
The composition of claim 19 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 26
Dependent Claim
10 words
The composition of claim 19 wherein each R is methyl.
Claim 27
Dependent Claim
10 words
The composition of claim 19 wherein each R is ethyl.
Claim 28
Dependent Claim
11 words
The composition of claim 19 wherein R is an aryl group.
Claim 29
Dependent Claim
20 words
The composition of claim 23 wherein said aryl group is a phenyl group of up to about 10 carbon atoms.
Claim 30
Dependent Claim
14 words
The composition of claim 19 wherein said cyclopentadienyl manganese tricarbonyl is methylcyclopentadienyl manganese tricarbonyl.
Claim 31
Dependent Claim
20 words
The composition of claim 25 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 32
Dependent Claim
12 words
The composition of claim 26 wherein said lower alkyl group is ethyl.
Claim 33
Dependent Claim
12 words
The composition of claim 26 wherein said lower alkyl group is methyl.
Claim 34
Dependent Claim
14 words
The gasoline of claim 18 wherein said cyclopentadienyl manganese tricarbonyl is methylcyclopentadienyl manganese tricarbonyl.
Claim 35
Dependent Claim
14 words
The gasoline of claim 12 wherein said cyclopentadienyl manganese tricarbonyl is methylcyclopentadienyl manganese tricarbonyl.
Claim 36
Dependent Claim
20 words
The gasoline of claim 30 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 37
Dependent Claim
12 words
The gasoline of claim 31 wherein said lower alkyl groUp is methyl.
Claim 38
Dependent Claim
12 words
The gasoline of claim 37 wherein said lower alkyl group is ethyl.
Claim 39
Dependent Claim
14 words
The gasoline of claim 6 wherein said cyclopentadienyl manganese tricarbonyl is methylcyclopentadienyl manganese tricarbonyl.
Claim 40
Dependent Claim
20 words
The gasoline of claim 34 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 41
Dependent Claim
12 words
The gasoline of claim 35 wherein said lower alkyl group is methyl.
Claim 42
Dependent Claim
12 words
The gasoline of claim 35 wherein said lower alkyl group is ethyl.
Claim 43
Dependent Claim
20 words
The composition of claim 5 wherein R is a lower alkyl group having from 1 to about 10 carbon atoms.
Claim 44
Dependent Claim
12 words
The composition of claim 38 wherein said lower alkyl group is ethyl.
Claim 45
Dependent Claim
12 words
The composition of claim 39 wherein said lower alkyl group is methyl.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |