| abstract |
A fuel additive composition comprising: (a) a poly(oxyalkylene) hydroxyaromatic ether having formula (I) or a fuel-soluble salt thereof; where R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R3 and R4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group of formula (II), where R6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; n is an integer from 5 to 100; and x is an integer from 0 to 10; and an aliphatic amine having at least one basic nitrogen atom and containing a hdyrocarbyl group which has sufficient molecular weight and carbon chain length to render the aliphatic amine soluble in hydrocarbons boiling in the gasoline or diesel range. |