| 摘要 |
<p>A polyalkyl ester of a substituted polyphenylether having the formula: (see fig. I) wherein A is amino, aminomethyl, cyano, nitro, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains about 1 to about 6 carbon atoms, or N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains about 1 to about 6 carbon atoms; R1 a polyalkyl group having an average molecular weight in the range of about 450 to about 5000; and x is an integer from about 1 to about 10 and y is an integer from 0 to about 10. The polyalkyl esters of the substituted polyphenyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.</p> |
