US4116644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline compositions
Assignee: Individual
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Filing: 1977-01-31
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Granted: 1978-09-26
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Expires: 1997-01-31
Abstract
Abstract Fuel induction systems of internal combustion engines are cleansed 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, especially when using a large amount of the detergent composition or when using the detergent composition with water intolerant gasolines, by inclusion of a demulsifier containing an aryl sulfonate, a polyether glycol, and an oxyalkylated phenol formaldehyde resin. The concentrates of this invention also include one or more alcohols of about 4 to about 10 carbon atoms, an aromatic solvent, and a corrosion inhibitor. This invention also comprises gasolines containing these concentrates; the concentrate being present in a small amount that confers carburetor detergency properties to the gasoline.
Inventors
- 👤 Philip F. Jackisch
- 👤 Calvin J. Worrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1608; C10L1/18; C10L1/182; C10L1/1822; C10L1/192; C10L1/198; C10L1/1985; C10L1/22; C10L1/234; C10L1/238; C10L1/24; C10L1/2431; C10L1/2437; F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
303 words
A concentrate for use in liquid hydrocarbon fuel boiling in the gasoline boiling range containing (I) from about 35 to about 50 weigh percent of the reaction product of: (A) one mole part of an alkylphenol having the formula: ##STR9## wherein n is an integer from 1 to 2, and R 1 is an aliphatic hydrocarbon radical having an average molecular weight of from about 400 to 1500; (B) from 1-5 mole parts of an aldehyde having the formula: ##STR10## 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 active hydrogen atom bonded to an amino nitrogen atom, and (II) from about 1.4 to about 5.6 weight percent of a demulsifying agent containing: (A) at least one oil-soluble amine, ammonium, alkaline earth metal, or alkali metal salt of an aryl sulfonic acid; (B) at least one oil-soluble polyether characterized by the presence within its structure of a group of the formula: --O-A).sub. x wherein A is an alkylene group containing from 2 to about 7 carbon atoms and where x has an average value of from about 5 to about 200; and (C) oxyalkylated phenol formaldehyde resin of the formula ##STR11## wherein A represents an alkylene group containing from about 2 to about 10 carbon atoms, where m has an average value of from about 4 to about 200, and where R is an alkyl group of about from 1 to about 20 carbon atoms, (III) from about 20 to about 25 weight percent of a mononuclear or dinuclear aromatic hydrocarbon solvent, (IV) from about 20 to about 35 weight percent of an alkanol having from 4 to 10 carbon atoms, and (V) from about 3 to about 5 weight percent of a corrosion inhibitor.
Claim 2
Dependent Claim
303 words
A concentrate for use in liquid hydrocarbon fuel boiling in the gasoline boiling range containing (I) from about 35 to about 50 weigh percent of the reaction product of: (A) one mole part of an alkylphenol having the formula: ##STR9## wherein n is an integer from 1 to 2, and R 1 is an aliphatic hydrocarbon radical having an average molecular weight of from about 400 to 1500; (B) from 1-5 mole parts of an aldehyde having the formula: ##STR10## 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 active hydrogen atom bonded to an amino nitrogen atom, and (II) from about 1.4 to about 5.6 weight percent of a demulsifying agent containing: (A) at least one oil-soluble amine, ammonium, alkaline earth metal, or alkali metal salt of an aryl sulfonic acid; (B) at least one oil-soluble polyether characterized by the presence within its structure of a group of the formula: --O-A).sub. x wherein A is an alkylene group containing from 2 to about 7 carbon atoms and where x has an average value of from about 5 to about 200; and (C) oxyalkylated phenol formaldehyde resin of the formula ##STR11## wherein A represents an alkylene group containing from about 2 to about 10 carbon atoms, where m has an average value of from about 4 to about 200, and where R is an alkyl group of about from 1 to about 20 carbon atoms, (III) from about 20 to about 25 weight percent of a mononuclear or dinuclear aromatic hydrocarbon solvent, (IV) from about 20 to about 35 weight percent of an alkanol having from 4 to 10 carbon atoms, and (V) from about 3 to about 5 weight percent of a corrosion inhibitor.
Claim 3
Dependent Claim
12 words
A concentrate of claim 1 wherein said alkanol contains 4-10 carbon atoms.
Claim 4
Dependent Claim
17 words
A concentrate of claim 1 wherein said alkanol is a mixture of C 6 -C 10 alcohols.
Claim 5
Dependent Claim
15 words
Gasoline containing a minor but carburetor detergency effective amount of a concentrate of claim 1.
Claim 6
Dependent Claim
15 words
Gasoline containing a minor but carburetor detergency effective amount of a concentrate of claim 2.
Claim 7
Dependent Claim
15 words
Gasoline containing a minor but carburetor detergency effective amount of a concentrate of claim 3.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |