Fuel composition

Details Fuel composition Fuel composition

2007-08-07

2007-08-07

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Liquid fuels

Heterocyclic carbon compound containing a hetero ring having...

C044S333000, C044S342000

Reexamination Certificate

active

10148815

ABSTRACT:
This invention is a fuel composition having a sulphur content of ≦50 ppm by weight and comprising ≧50 ppm by weight of at least one fused polycyclic aromatic compound which has at least one hetero-atom selected from O and N either (a) as a heterocyclic group, or, (b) as an exocyclic group in which the hetero-atom is attached either directly or through one other carbon atom to a ring carbon atom wherein the fused polycyclic aromatic compound is substituted on at least one of its ring carbon atoms by a C1-C4 alkyl group. These compounds are capable of improving the antiwear and lubricity properties of a low sulphur fuels, especially diesel fuels, when compared with the performance of the same fuel in the absence of such compounds.

REFERENCES:
patent: 2754216 (1956-07-01), Chenicek
patent: 2771367 (1956-11-01), Thompson et al.
patent: 4266947 (1981-05-01), Hartle et al.
patent: 4773916 (1988-09-01), Croudace et al.
patent: 5516443 (1996-05-01), Jackson et al.
patent: 5730762 (1998-03-01), Murakami et al.
patent: 6656237 (2003-12-01), Barbour et al.
patent: 874039 (1998-10-01), None

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