Method for marking liquid hydrocarbons and other fuels and oils
AssigneeAngus Chemical Company
InventorsGeorge David Green, Raymond John Swedo
Life of this patent
Estimating the term…
Abstract
A method for marking a petroleum hydrocarbon, biodiesel fuel or ethanol fuel by adding to the petroleum hydrocarbon, biodiesel fuel or ethanol fuel at least one compound having formula (I) wherein R1 and R2 independently represent at least one substituent selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy and nitro; and R3 and R4 independently represent hydrogen, methyl or ethyl.
Claims10
A method for marking a petroleum hydrocarbon, biodiesel fuel or ethanol fuel;
- said method comprising adding to said petroleum hydrocarbon, biodiesel fuel or ethanol fuel at least one compound having formula (I)
- wherein R1 and R2 independently represent at least one substituent selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy and nitro;
- and R3 and R4 independently represent hydrogen, methyl or ethyl.
A method for identifying a petroleum hydrocarbon, biodiesel fuel or ethanol fuel marked with at least one compound having formula (I)
- wherein R1 and R2 independently represent at least one substituent selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy and nitro;
- and R3 and R4 independently represent hydrogen, methyl or ethyl;
- wherein each compound of formula (I) is present at a level from 0.05 ppm to 20 ppm;
- said method comprising separating each compound of formula (I) using a chromatographic method and identifying each compound of formula (I) by mass spectral analysis.
Dependencies are inferred from the claim text.