Use of carbonyl compounds as markers

Details Use of carbonyl compounds as markers Use of carbonyl compounds as markers

1998-12-04

1999-11-16

Howard, Jacqueline V.

Fuel and related compositions

Liquid fuels

Containing organic -c

44388, 44418, 44437, C10L 118

Patent

active

059849835

ABSTRACT:
Carbonyl compounds, such as ketones, aldehydes, esters, amides, anhydrides and carboxylic acids are added to a material, particularly a liquid material as markers. Subsequently the carbonyl compound(s) are identified by measuring the absorbency peak(s) of the carbonyl compounds in the mid-IR range. Carbonyl compounds soluble in non-polar solvents and substantially insoluble in water are particularly suitable for tagging and identifying petroleum fuels. For use in petroleum fuels, the carbonyl compound(s) preferably contains no element other than carbon, hydrogen, oxygen and nitrogen. Digital carbonyl marker systems, i.e., systems containing two or more carbonyl compounds in predetermined ratios, can be determined quantitatively with instruments, such as SpecTrace.TM. which measure absorbance in the mid-IR region.

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patent: 5429952 (1995-07-01), Garner et al.
patent: 5525516 (1996-06-01), Krutak et al.
patent: 5776713 (1998-07-01), Garner

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