Low-sulfur diesel fuels containing organometallic complexes

Patent 5376154 Issued on December 27, 1994. Estimated Expiration Date:

December 27, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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2151432

2203374

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Inventors

Assignee

The Lubrizol Corporation

Application

No. 753517 filed on 09/03/1991

US Classes:

44/358, Organic compound containing the heavy metal or aluminum44/354, Aluminum or heavy metal, other than lead, containing44/362, Heavy metal or aluminum complex of compounds having two -C(=X)- groups, wherein X is chalcogen, bonded to the same carbon, or enols thereof (e.g., iron acetylacetonate, etc.)44/366, Heavy metal or aluminum salt of organic phosphorus acid44/367, Nitrogen bonded directly or indirectly to the heavy metal or aluminum44/450Phenol or salt thereof

Examiners

Primary: McAvoy, Ellen M.

Attorney, Agent or Firm

Hunter; Frederick D.

Foreign Patent References

671137 CA. 09/12/1963
699862 CA. 12/12/1964
0078249 EP. 09/12/1982
0073615 EP. 03/12/1983
0092755 EP. 11/12/1983
0092756 EP. 11/12/1983
0113856 EP. 12/12/1983
0104783 EP. 04/12/1984
0261795 EP. 03/12/1988
0283294 EP. 09/12/1988
821211 FR. 04/12/2012
1159705 FR. 02/12/2012
1179418 FR. 12/12/2012
1194036 FR. 05/12/2012
1545132 FR. 11/12/1968
1546216 FR. 11/12/1968
2207904 FR. 06/12/1974
2443017 DE. 03/12/1975
0254738 DE. 03/12/1988
1182880 GB. 03/12/1970
1566106 GB. 04/12/1980
2064547 GB. 06/12/1981
2116583A GB. 09/12/1983
2248068 GB. 03/12/1992
794015 SU. 01/12/1981
WO8701720 WO. 03/12/1987
8802392 WO. 04/12/1988

International Classes

C10L 001/22
C10L 001/26

Abstract

This invention relates to low-sulfur diesel fuels which are useful with diesel engines equipped with exhaust system particulate traps. These fuels contain an effective amount of an organometallic complex to lower the ignition temperature of exhaust particles collected in the trap. The sulfur content of these diesel fuels is no more than about 0.1% by weight, preferably no more than about 0.05% by weight. The organometallic complex is soluble or stably dispersible in the diesel fuel and is derived from (i) an organic compound containing at least two functional groups attached to a hydrocarbon linkage, and (ii) a metal reactant capable of forming a complex with the organic compound (i), the metal being any metal capable of reducing the ignition temperature of the exhaust particles. The functional groups include =X, --XR, --NR2, --NO2, =NR, =NXR, =N--R*--XR, ##STR1## --CN, --N=NR and --N=CR2 ; wherein X is O or S, R is H or hydrocarbyl, R* is hydrocarbylene or hydrocarbylidene, and a is a number (e.g., zero to about 10). Useful metals include Na, K, Mg, Ca, Sr, Ba, Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Cu, Zn, B, Pb, Sb, and mixtures of two or more thereof. This invention is also directed to methods of operating a diesel engine equipped with an exhaust system particulate trap using the foregoing low-sulfur diesel fuels.

Other References

Hunter et al., "The Azo-group as a Chelating Group, Part V, Metallic Derivatives of Arylazo-oximes and of Formazyl Compounds", J. Chem. Soc., 1941, pp. 820-823
Hunter et al., "The Associating Effect of the Hydrogen Atom, Part IX, The N-H-N Bond, Virtual Tautomerism of the Formazyl Compounds", J. Chem. Soc., 1941, pp. 823-826
Stiglic et al., "Emission Testing of Two Heavy Duty Diesel Engines Equipped With Exhaust Aftertreatment", SAE Technical Paper Series, 900919, 41st Annual Earthmoving Industry Conference, Peoria, Ill., Apr. 3-5, 1990
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Chemical Abstract 112:182741d, CA Selects: Fuel and Lubricant Additives, Issue 11, 1990, p. 2
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