Quaternary ammonium detergent fuel additives

摘要

A fuel soluble additive for a diesel engine, a method for improving performance of fuel injectors and a method for cleaning fuel injectors for a diesel engine. The fuel soluble additive includes a quaternary ammonium salt derived from the reaction of (a) a hydrocarbyl amine containing at least one tertiary amino group, (b) an epoxide compound selected from a glycidol, a glycidyl ether, glycidyl ester, polyglycidyl ether, a polyglycidyl ester, and combinations thereof, wherein substituents of the glycidyl group have, on average, less than five carbon atoms per hetero atom, and (c) optionally a proton donor.

主权项

1. A fuel composition for a diesel engine comprising from about 5 to about 200 ppm by weight (0.0005 to 0.0200 wt.%) based on a total weight of the fuel composition of a fuel additive comprising a quaternary ammonium salt derived from the reaction of (a) a hydrocarbyl amine selected from the group consisting of acylated amines containing at least one tertiary amino group and amido amines of the formulawherein each of R10 and R11 is selected from hydrocarbyl groups containing from 1 to 50 carbon atoms, each of R9, R12, R13, and R14 may be independently selected from hydrogen or a hydrocarbyl group, x ranges from 1 to 6, y is 0 or 1, z ranges from 1 to 6, and n ranges from 1 to 6,
(b) an epoxide compound selected from the group consisting of a glycidol, a glycidyl ether, glycidyl ester, polyglycidyl ether, a polyglycidyl ester, and combinations thereof, wherein substituents of the glycidyl group have, on average, less than five carbon atoms per hetero atom, and (c) optionally a proton donor.