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US 5,292,351 AGranted
Composition of matter for aloyl and aroyl ureas as nitric oxide reducing agents in diesel emissions
AssigneeTexaco Inc.
InventorsThomas F. DeRosa, Rodney Lu-Dai Sung, Benjamin J. Kaufman
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Abstract
A composition of matter comprising: a) an aloyl urea represented by the formula ##STR1## where R.sub.1 is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl, or aryl hydrocarbon; and b) an aroyl urea represented by the formula ##STR2## where R.sub.1 is a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; and Z is a heteroatom selected from the group consisting of Group IVa, Group Va and Group VIa materials of the periodic table.
Claims7
A composition of matter comprising:
- a) an aloyl urea represented by the formula ##STR11## where R.sub.1 is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl, or aryl hydrocarbon;
- and
- b) an aroyl urea represented by the formula ##STR12## where R.sub.1 is a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon;
- and Z is a heteroatom selected from the group consisting of Group IVa, Group Va and Group VIa materials of the periodic table.
1 more element
Dependencies are inferred from the claim text.