| 摘要 |
<p>A poly(oxyalkylene) pyridyl or piperidyl ester having the formula: <CHEM> or a fuel-soluble salt thereof; wherein A is a nitrogen-containing ring selected from the group consisting of 3-pyridyl, 4-pyridyl, 3-piperidyl and 4-piperidyl; R1 and R2 are independently hydrogen or lower alkyl having 1 to about 6 carbon atoms and each R1 and R2 is independently selected in each -O-CHR1-CHR2- unit; R3 is hydrogen, alkyl having 1 to about 100 carbon atoms, phenyl, aralkyl having about 7 to about 100 carbon atoms or alkaryl having about 7 to about 100 carbon atoms; x is an integer from 0 to 4; and n is an integer from about 5 to about 100. The poly(oxyalkylene) pyridyl and piperidyl esters of the present invention are useful as fuel additives for the prevention and control of engine deposits.</p> |
