| 摘要 |
<p>Substituted biphenyl polyalkyl ethers having the formula: wherein R1 is hydrogen or hydroxyl; R2 is hydroxyl, cyano, nitro, amino, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains 1 to about 6 carbon atoms, N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains 1 to about 6 carbon atoms, with the proviso that R1 and R2 are ortho relative to each other and meta or para relative to the adjoining phenyl substitutent; and R3 is a polyalkyl group having an average molecular weight in the range of about 450 to about 5,000. The subsitituted biphenyl polyalkyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.</p> |
