Synergistic fuel compositions
AssigneeChevron Research Company
InventorCurtis B. Campbell
Life of this patent
Estimating the term…
Abstract
Disclosed is a synergistic fuel composition containing a hydrocarbyl-substituted amine or polyamine and a poly(oxyalkylene) monool. These compositions provide for an unexpected decrease in those deposits which have been correlated to Octane Requirement Increase (ORI).
Claims12
A fuel composition comprising a major portion of hydrocarbons boiling in the gasoline range and (a) from about 0.001% by weight to about 1.0% by weight of a hydrocarbyl-substituted amine or polyamine having an average molecular weight of about 750 to about 10,000 and also having at least one basic nitrogen atom, and (b) a hydrocarbyl-terminated poly(oxyalkylene) monool having an average molecular weight from about 500 to 5000 wherein said oxyalkylene group of the hydrocarbyl-terminated poly(oxyalkylene) monool is a C.sub.2 to C.sub.5 oxyalkylene group and the hydrocarbyl group of said hydrocarbyl-terminated poly(oxyalkylene) monool is a C.sub.7 -C.sub.30 alkylphenyl group and wherein the weight percent of hydrocarbyl-terminated poly(oxyalkylene) monool in the fuel composition ranges from about 0.01 to 100 times the amount of hydrocarbyl-substituted amine or polyamine.
A method of reducing the ORI of a fuel composition containing a hydrocarbyl-substituted amine or polyamine which comprises adding a hydrocarbyl-terminated poly(oxyalkylene) monool having a molecular weight of from about 500 to about 5,000 wherein said oxyalkylene group of the poly(oxyalkylene) monool is a C.sub.2 to C.sub.5 oxyalkylene group and the hydrocarbyl group of said hydrocarbyl poly(oxyalkylene) monool is a C.sub.7 -C.sub.30 akylphenyl group and wherein the weight percent hydrocarbyl-terminated poly(oxyalkylene) monool in the fuel composition ranges from about 0.01 to 100 times the amount of hydrocarbylsubstituted amine or polyamine.
Dependencies are inferred from the claim text.