polyalkylester of hydroxyaromatischen carboxylic acids and those containing brennstoffzusammensetzungen

摘要

Polyalkyl hydroxyaromatic esters having the formula: IMAGE (I) or a fuel-soluble salt thereof; where R1 and R2 are independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R3 is a polyalkyl group having a weight average molecular weight in the range of about 450 to 5,000; and x is an integer from 0 to 10. The polyalkyl hydroxyaromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.