| abstract |
The aromatic esters of the polyalkylphenoxyalkanoles that have the formula; (See Formula) or a soluble fuel salt thereof, where R is hydroxy, nitro or - (CH2) x-NR5R6, where R5 and R6 independently are hydrogen or lower alkyl having 1 to 6 carbon atoms and x is 0 or 1; R1 is hydrogen, hydroxy, nitro, or -NR7R8, where R7 and R8 independently are hydrogen or lower alkyl having 1 to 6 carbon atoms; R2 and R3 independently are hydrogen or lower alkyl having 1 to 6 carbon atoms; and R4 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000. The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits. |