US4412847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor fuel additive
Assignee: Standard Oil Co
•
Filing: 1978-10-03
•
Granted: 1983-11-01
•
Expires: 1998-10-03
Abstract
Abstract Aryl ethers, e.g., cumylmethylether and anisole, are particularly effective additives for improving the octane number of motor fuels. These aryl ethers are especially useful in increasing the octane number of unleaded gasolines.
Inventors
- 👤 Serge R. Dolhyj
- 👤 Louis J. Velenyi
- 👤 Andrew T. Guttmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:37
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/02; C10L1/023; C10L1/10; C10L1/14; C10L1/18; C10L1/185; C10L1/1852
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
104 words
A motor fuel comprising a blend of (1) a mixture of hydrocarbons boiling within the gasoline range, and (2) an aryl ether, said aryl ether having the structure: R.sub.1 --(R.sub.2)--O--R.sub.3 wherein R 1 is selected from the group consisting of phenyl, substituted phenyl substituted with one methyl group, substituted phenyl substituted with two methyl groups and substituted phenyl substituted with one ethyl group; R 2 is selected from the group consisting of substituted methane substituted with one or two methyl groups, ethane, and substituted ethane substituted with one or two methyl groups; R 3 is selected from the group consisting of methyl and ethyl.
Claim 2
Dependent Claim
104 words
A motor fuel comprising a blend of (1) a mixture of hydrocarbons boiling within the gasoline range, and (2) an aryl ether, said aryl ether having the structure: R.sub.1 --(R.sub.2)--O--R.sub.3 wherein R 1 is selected from the group consisting of phenyl, substituted phenyl substituted with one methyl group, substituted phenyl substituted with two methyl groups and substituted phenyl substituted with one ethyl group; R 2 is selected from the group consisting of substituted methane substituted with one or two methyl groups, ethane, and substituted ethane substituted with one or two methyl groups; R 3 is selected from the group consisting of methyl and ethyl.
Claim 3
Dependent Claim
25 words
The motor fuel of claim 1 wherein R 1 is selected from the group consisting of phenyl and substituted phenyl substituted with one methyl group.
Claim 4
Dependent Claim
25 words
The motor fuel of claim 1 wherein R 2 is selected from the group consisting of substituted methanes substituted with one or two methyl groups.
Claim 5
Dependent Claim
11 words
The motor fuel of claim 1 wherein R 3 is methyl.
Claim 6
Dependent Claim
13 words
The motor fuel of claim 1 wherein the aryl ether is cumylmethyl ether.
Claim 7
Dependent Claim
21 words
The motor fuel of claim 1 wherein the motor fuel contains from 3 to 30% by volume of the aryl ether.
Claim 8
Dependent Claim
17 words
The motor fuel of claim 6 wherein the motor fuel contains from 5 to 20% aryl ether.
Claim 9
Dependent Claim
15 words
The motor fuel of claim 7 wherein the motor fuel contains about 10% aryl ether.
Claim 10
Dependent Claim
16 words
The motor fuel of claim 1 wherein the aryl ether boils between 70° and 220° C.
Claim 11
Dependent Claim
16 words
The motor fuel of claim 1 wherein the aryl ether boils between 180° and 210° C.
Claim 12
Dependent Claim
15 words
The motor fuel of claim 9 wherein the aryl ether boils at about 200° C.
Claim 13
Dependent Claim
14 words
The motor fuel of claim 1 wherein said motor fuel comprises an unleaded gasoline.
Claim 14
Dependent Claim
17 words
The motor fuel of claim 1 wherein said motor fuel does not contain any methyl-substituted phenolic additives.
Claim 15
Dependent Claim
19 words
The motor fuel of claim 1 wherein said motor fuel does not contain any group IIA metal carbonate additives.
Claim 16
Dependent Claim
30 words
The motor fuel of claim 1 wherein the amount of the aryl ether is sufficient to improve the octane number of the mixture of hydrocarbon boiling within the gasoline range.
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |