US3994698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline additive concentrate composition
Assignee: Ethyl Corp
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Filing: 1975-06-30
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Granted: 1976-11-30
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Expires: 1995-06-30
Abstract
Abstract Fuel induction systems of internal combustion engines are cleaned by operating the engine on a gasoline containing a detergent amount of the condensation product of phenol and preferably a high molecular weight alkylphenol, an aldehyde and an amine having a H--N < group. Effectiveness is improved by inclusion of a mineral polyolefin having an average molecular weight of from about 300-2000. The condensation product is also effective in other distillate fuels.
Inventors
- 👤 Calvin J. Worrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:24
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/146; C10L1/16; C10L1/1616; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/18; C10L1/182; C10L1/1822; C10L1/22; C10L1/221; C10L1/234; C10L1/238; F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A concentrate for use in liquid hydrocarbon fuel in the gasoline boiling range comprising I. from 0.20 - 90 percent by weight of the reaction product of A. one mole part of an alkylphenol having the formula: ##SPC3## wherein n is an integer from 1 to 2, and R 1 is an aliphatic hydrocarbon radical having a molecular weight of from about 400 to 1500; B. from 1-5 mole parts of an aldehyde having the formula ##EQU1## wherein R 2 is selected from hydrogen and alkyl radicals containing 1-6 carbon atoms; and C. from 0.5-5 mole parts of an amine having at least one amino group having at least one active hydrogen atom, Ii. from 0.5 - 90 percent by weight of a hydrocarbon diluent, Iii. from 0.1 - 60 percent by weight of an alkanol having about 6 to 10 carbon atoms, and Iv. from 8 - 98 percent by weight of a normally liquid hydrocarbon polylolefin having an average molecular weight of from 300-2000.
Claim 2
Dependent Claim
166 words
A concentrate for use in liquid hydrocarbon fuel in the gasoline boiling range comprising I. from 0.20 - 90 percent by weight of the reaction product of A. one mole part of an alkylphenol having the formula: ##SPC3## wherein n is an integer from 1 to 2, and R 1 is an aliphatic hydrocarbon radical having a molecular weight of from about 400 to 1500; B. from 1-5 mole parts of an aldehyde having the formula ##EQU1## wherein R 2 is selected from hydrogen and alkyl radicals containing 1-6 carbon atoms; and C. from 0.5-5 mole parts of an amine having at least one amino group having at least one active hydrogen atom, Ii. from 0.5 - 90 percent by weight of a hydrocarbon diluent, Iii. from 0.1 - 60 percent by weight of an alkanol having about 6 to 10 carbon atoms, and Iv. from 8 - 98 percent by weight of a normally liquid hydrocarbon polylolefin having an average molecular weight of from 300-2000.
Claim 3
Dependent Claim
24 words
A concentrate according to claim 1 wherein said reaction product constitutes from about 20 percent to about 60 percent by weight of the concentrate.
Claim 4
Dependent Claim
24 words
A concentrate according to claim 2 wherein said hydrocarbon diluent constitutes from about 5 percent to about 45 percent by weight of the concentrate.
Claim 5
Dependent Claim
23 words
A concentrate according to claim 2 wherein said alkanol constitutes from about 5 percent to about 45 percent by weight of the concentrate.
Claim 6
Dependent Claim
23 words
A concentrate according to claim 2 wherein said polyolefin constitutes from about 45 percent to about 85 percent by weight of the concentrate.
Claim 7
Dependent Claim
15 words
A concentrate according to claim 5 wherein said hydrocarbon diluent is primarily an aromatic hydrocarbon.
Claim 8
Dependent Claim
11 words
A concentrate according to claim 5 wherein said polyolefin is polybutene.
References Cited (Backward Citations)
US2866694A
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US2916451A
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US3020134A
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US3269810A
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US3649229A
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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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |