Patent US4036605A successfully refreshed from Google Patents.
US4036605A
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Chelates of cerium (IV), their preparation and gasoline containing said chelates
Assignee: Chevron USA Inc
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Filing: 1973-06-11
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Granted: 1977-07-19
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Expires: 1993-06-11
Abstract
Abstract A gasoline motor fuel having improved antiknock characteristics is obtained by incorporating a novel chelate of cerium (IV) in the gasoline. Examples of the novel chelates of cerium (IV) include ps CERIC 2,4-HEXANEDIONATE CERIC 3,5-OCTANEDIONATE CERIC 2,2-DIMETHYL-3,5-HEPTANEDIONATE CERIC 2,6-DIMETHYL-3,5-HEPTANEDIONATE CERIC 2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATE The chelates of cerium (IV) are prepared by a novel oxidative ligand exchange reaction between cerous acetylacetonate and a beta -diketone.
Inventors
- 👤 Robert J. Hartle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:11
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1814
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A gasoline motor fuel composition comprising a major amount of gasoline and a small amount, sufficient to improve the antiknock characteristics of said gasoline, of a chelate of cerium (IV) represented by the general formula ##STR3## where R and R' are selected from the group consisting of alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
Claim 2
Dependent Claim
75 words
A gasoline motor fuel composition comprising a major amount of gasoline and a small amount, sufficient to improve the antiknock characteristics of said gasoline, of a chelate of cerium (IV) represented by the general formula ##STR3## where R and R' are selected from the group consisting of alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
Claim 3
Dependent Claim
34 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is present in an amount sufficient to incorporate about 0.1 to about 3.0 grams of cerium per gallon of gasoline.
Claim 4
Dependent Claim
17 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is ceric 2,4-hexanedionate.
Claim 5
Dependent Claim
17 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is ceric 3,5-octanedionate.
Claim 6
Dependent Claim
17 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is ceric 2,2-dimethyl-3,5-heptanedionate.
Claim 7
Dependent Claim
17 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is ceric 2,6-dimethyl-3,5-heptanedionate.
Claim 8
Dependent Claim
17 words
The gasoline motor fuel composition of claim 1 wherein the chelate of cerium (IV) is ceric 2,2,6,6-tetramethyl-3,5-heptanedionate.
Claim 9
Dependent Claim
60 words
A fuel composition consisting essentially of a gasoline and a knock-inhibiting amount of a β-ketoenolate having the following general formula: ##STR4## where R 2 and R 3 are selected from the group consisting of alkyl, aryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
Claim 10
Dependent Claim
60 words
A fuel composition consisting essentially of a gasoline and a knock-inhibiting amount of a β-ketoenolate having the following general formula: ##STR4## where R 2 and R 3 are selected from the group consisting of alkyl, aryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
Claim 11
Dependent Claim
12 words
The fuel composition of claim 8 in which the β-ketoenolate is tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato)cerium(IV).
Claim 12
Dependent Claim
26 words
The fuel composition of claim 8 in which the amount of β-ketoenolate is in the range of about 0.71 to 21.4 millimols per gallon of gasoline.
Claim 13
Dependent Claim
10 words
The fuel composition of claim 10 which contains an alkyllead.
Claim 14
Dependent Claim
12 words
The fuel composition of claim 11 in which the alkyllead is tetraethyllead.
Claim 15
Dependent Claim
80 words
In a method of operating an internal combustion in which unburned hydrocarbons are present in the combustion products, the improvement which comprises catalyzing the oxidation of the unburned hydrocarbons by contacting same with a β-ketoenolate having the following general formula: ##STR5## where R 2 and R 3 are selected from the group consisting of alkyl, aryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
Claim 16
Dependent Claim
80 words
In a method of operating an internal combustion in which unburned hydrocarbons are present in the combustion products, the improvement which comprises catalyzing the oxidation of the unburned hydrocarbons by contacting same with a β-ketoenolate having the following general formula: ##STR5## where R 2 and R 3 are selected from the group consisting of alkyl, aryl and cycloalkyl radicals containing from 1 to 12 carbon atoms and the sum of the carbon atoms in said radicals is 3 to 24.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |