Patent ID: 7858373
Filing Date: 2010-12-28
Classification: C10G,C10L,C10M,Y02P,Y10T

Abstract:
1. A method for marking a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel; said method comprising adding to said petroleum hydrocarbon, biodiesel fuel or ethanol fuel at least one organic compound having: (i) an axis of three-fold symmetry; (ii) a nitrogen, oxygen, phosphorus or boron content of at least 3 weight %; and (iii) a molecular weight of at least 240; wherein each said at least one organic compound is present at a level from 0.01 ppm to 5 ppm; wherein said at least one organic compound contains an essentially planar six-membered ring having an axis of three-fold symmetry; and wherein said at least one organic compound contains at least 8 weight % nitrogen, said nitrogen is present only as part of amino or amide groups, and the essentially planar six-membered ring is a cyanurate, isocyanurate or 1,3,5-triazine ring.