Polyalkylphenyl and polyalkyloxycarbonylphenyl amino and nitro benzoates and fuel compositions containing the same
AssigneeChevron Chemical Company
InventorRichard E. Cherpeck
Life of this patent
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Abstract
Compounds having the formula: ##STR1## and fuel soluble salts thereof; wherein R.sup.1 is nitro or --(CH.sub.2).sub.x --NR.sup.4 R.sup.5, wherein R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl and x is 0 or 1; R.sup.2 is hydrogen, hydroxy, nitro, or --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are independently hydrogen or lower alkyl and R is a polyalkyl or polyalkyloxycarbonyl group. The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
Claims42
A compound of the formula:
- ##STR13## or a fuel soluble salt thereof, wherein R.sup.1 is nitro or --(CH.sub.2).sub.x --NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl having 1 through 6 carbon atoms and x is 0 or 1;
- R.sub.2 is hydrogen, hydroxy, nitro or --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;
- and
- R is R.sup.3 or --C(O)OR.sup.3 wherein R.sup.3 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000.
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel range and an amount effective to control engine deposits of a compound of the formula:
- ##STR14## or a fuel soluble salt thereof, wherein R.sup.1 is nitro or --(CH.sub.2).sub.x --NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl having 1 through 6 carbon atoms and x is 0 or 1;
- R.sup.2 is hydrogen, hydroxy, nitro or --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;
- and
- R is R.sup.3 or --C(O)OR.sup.3 wherein R.sup.3 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000.
A fuel concentrate comprising an inert stable oleophilic organic solvent boiling in the range of from about 150.degree. F. to 400.degree. F. and from about 10 to about 70 weight percent of a compound of the formula:
- ##STR15## or fuel soluble salt thereof, wherein R.sup.1 is nitro or --(CH.sub.2).sub.x --NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl containing 1 through 6 carbon atoms and x is 0 or 1;
- R.sub.2 is hydrogen, hydroxy, nitro or --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;
- and
- R is R.sup.3 or --C(O)OR.sup.3 wherein R.sup.3 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000.
Dependencies are inferred from the claim text.