| 摘要 |
<p>Aromatic amides of poly(oxyalkylene) carbamates having the formula: <CHEM> or a fuel-soluble salt thereof; wherein A is hydroxy, nitro, amino, N-alkylamino wherein the alkyl group contains about 1 to about 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains about 1 to about 6 carbon atoms; R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having about 1 to about 6 carbon atoms, or lower alkoxy having about 1 to about 6 carbon atoms; R3 and R5 are each independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms; R4 is hydrogen or an acyl group of the formula: <CHEM> wherein A1 is hydroxy, nitro, amino, N-alkylamino wherein the alkyl group contains about 1 to about 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains about 1 to about 6 carbon atoms; R6 and R7 are each independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms and each R6 and R7 is independently selected in each -O-CHR6-CHR7- unit; R8 is hydrogen, alkyl having about 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; R9 and R10 are each independently hydrogen, hydroxy, lower alkyl having about 1 to about 6 carbon atoms, or lower alkoxy having about 1 to about 6 carbon atoms; x is an integer from about 2 to about 5; y is an integer from about 0 to about 1; z is an integer from about 5 to about 100. The aromatic amides of poly(oxyalkylene)carbamates are useful as fuel additives for the prevention and control of engine deposits.</p> |
