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US3615290A Expired / Lapsed US ⏱️ 0.0 years remaining

Emulsified hydrocarbon fuel

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1969-04-03
•
Granted: 1971-10-26
•
Expires: 1989-04-03
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Abstract

Abstract Stable emulsions of normal liquid hydrocarbon fuels particularly jet gas turbine fuels for aircraft are prepared in which the normally liquid hydrocarbon fuel is emulsified with a minor amount of a polar organic liquid which is immiscible with said normally liquid hydrocarbon fuel. The emulsion of the hydrocarbon fuel is at least 75 wt. percent of the fuel as a dispersed phase, contains at least one nonionic emulsifier, contains a polar organic solvent as the continuous phase and also contains up to and including about 1.5 wt. percent of water. In addition, this emulsion also contains a small amount (from 0.001 up to 1.0 wt. percent of the emulsion of a corrosion inhibitor selected from the group consisting of the alkali metal, alkaline earth metal, ammonium, or hydrazine soaps of normal or branched chain C4-C30 alkyl or alkenyl substituted succinic anhydride or succinic acid, the Schiff''s bases of hydroxy phenyl aldehydes, oximes, ketones or the hydroxy benzyl aldehydes, oximes or ketones condensed with an alkylene diamine or polyamine, and the aziridyl substituted alkyl amines, diamines, or polyamines.

Inventors

  • 👤 James Nixon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 21:45
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/328

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 16 words
Emulsified fuel as defined by claim 1 wherein said liquid hydrocarbon is a jet engine fuel.
Claim 2
Dependent Claim 15 words
Emulsified fuel as defined by claim 1 wherein said corrosion inhibitor is trisaziridyl methyl amine.
Claim 3
Dependent Claim 27 words
Emulsified fuel as defined by claim 1 wherein the amount of corrosion inhibitor present is between about 0.01 and about 0.5 wt. percent of the total emulsion.
Claim 4
Dependent Claim 79 words
A jet fuel emulsion comprising at least about 97 wt. percent of a hydrocarbon jet fuel as a dispersed phase, a continuous phase of about 1.5 to about 2 wt. percent of formamide, about 0.5 to about 1 wt. percent of water, up to about 1 wt. percent of a nonionic emulsifier, and up to about 1 wt. percent of a corrosion inhibitor selected from the group consisting of aziridyl-substituted alkyl monoamine, aziridyl-substituted alkylene diamine, and aziridyl-substituted polYalkylene polyamine.
Claim 5
Dependent Claim 92 words
A jet fuel emulsion as defined by claim 5 wherein the emulsion contains about 1.6 wt. percent of formamide, between about 0.2 and about 0.4 wt. percent of urea, about 0.5 wt. percent of water, between about 0.3 and about 0.7 wt. percent of equal amounts of sorbitan monooleate and ethoxylated sorbitan monooleate, between about 0.1 and about 0.2 wt. percent of ethoxylated tridecyl alcohol obtained from 1 mole of the alcohol and about 8 moles of ethylene oxide, and about 0.1 to about 0.2 wt. percent of the said corrosion inhibitor.

References Cited (Backward Citations)

US2722516A Cited
US2931804A Cited
US3240574A Cited
US3375092A Cited
US3454380A Cited
US3468802A Cited
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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) 1974-10-25 1975-04-26 1975-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-25 1979-04-26 1979-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-25 1983-04-26 1983-10-26 $7700.00 Window Closed / Lapsed

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