| 摘要 |
(Keto) diacid amides of poly(olefin)-N-substituted amines are used alone or in combination with certain carriers, such as poly(olefin) polymers or hydrogenated forms of the polymers as fuel additives to prevent or reduce engine deposits and have formula <IMAGE> in which R is a poly(olefin) chain having an average molecular weight of from about 500 to about 9,900; each R<1> is independently a hydrocarbyl or substituted hydrocarbonyl group containing up to 15 carbon atoms; m is 0 or 1; Y is an N-substituted amino group in which the substituent is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms; and A may be hydroxy, halogen or hydrocarbyloxy of up to 10 carbon atoms. |
