Patent US4519809A successfully refreshed from Google Patents.
US4519809A
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Method for reducing water sensitivity of ether containing gasoline compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1984-04-23
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Granted: 1985-05-28
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Expires: 2004-04-23
Abstract
Abstract A method for reducing the water sensitivity of an ether containing gasoline composition comprising mixing the ether component after it is prepared and while it is essentially water free with a selected paraffinic component before it is added to the gasoline.
Inventors
- 👤 Albert M. Hochhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:22
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/02; C10L1/023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A method for reducing the water sensitivity of an ether containing gasoline composition which comprises mixing an alkyl ether component having alkyl groups of 1 to 7 carbon atoms after it is prepared and while it is essentially water free with at least 40% by volume of a branched chain paraffin component having up to 11 carbon atoms and derived from the alkylation of an isoparaffin and an olefin before it is added to the gasoline.
Claim 2
Independent Claim
76 words
A method for reducing the water sensitivity of an ether containing gasoline composition which comprises mixing an alkyl ether component having alkyl groups of 1 to 7 carbon atoms after it is prepared and while it is essentially water free with at least 40% by volume of a branched chain paraffin component having up to 11 carbon atoms and derived from the alkylation of an isoparaffin and an olefin before it is added to the gasoline.
Claim 3
Dependent Claim
38 words
The method of claim 1 wherein the ether component is a dialkyl ether with one alkyl group being a branched chain of 4 to 6 carbon atoms and the other alkyl group containing 1 to 3 carbon atoms.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said branched chain paraffin component contains 6 to 11 carbon atoms.
Claim 5
Dependent Claim
31 words
The method of claim 3 wherein said paraffin is obtained from the alkylation of an isoparaffin having 4 to 6 carbon atoms with an olefin of 2 to 5 carbon atoms.
Claim 6
Dependent Claim
22 words
The method of claim 3 wherein from about 50 to about 70% of said paraffin component is used in said ether/paraffin mixture.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein said ether has one branched chain alkyl group of 4 to 5 carbon atoms.
Claim 8
Dependent Claim
15 words
The method of claim 6 wherein the paraffin component has 7 to 9 carbon atoms.
Claim 9
Dependent Claim
12 words
The method of claim 7 wherein said ether is methyl tertiary-butyl ether.
Claim 10
Dependent Claim
25 words
The method of claim 8 wherein said paraffin component is derived from the alkylation of isobutane with an olefin of 3 to 5 carbon atoms.
Claim 11
Dependent Claim
18 words
The method of claim 9 wherein said ether component contains less than about 0.1 wt. % of water.
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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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |