ETHER COMPOUND OF POLYALKYL- OR POLYALKENYL-N- HYDROXYALKYLSUCCINIMIDE AND FUEL COMPOSITION CONTAINING THIS COMPOUND

摘要

PROBLEM TO BE SOLVED: To inhibit the formation of engine deposit by blending a specific compound (a fuel-soluble salt) with a hydrocarbon having a boiling point in the range of that of a gasoline or a diesel fuel. SOLUTION: A compound of formula I or its fuel-soluble salt of 50-2,500 ppm is added to a hydrocarbon having a boiling point in the range of that of a gasoline or a diesel fuel. In formula I, R is a polyalkyl or a polyalkenyl of an average molecular weight of 450-5,000; (n) is 2-5; Z is pyridyl, piperidyl, or the like; R1 is hydroxy, nitro, cyano or (CH2)x-NR3R4; R3 and R4 are each H or a 1-6C lower alkyl; (x) is 0 or 1; R2 is H, hydroxy, nitro, cyano or (CH2)y- NR5R6; R5 and R6 are each H or a 1-6C lower alkyl; and (y) is 0 or 1. 10-70 wt.%, preferably 10-60 wt.%, of the compound of formula I is added to an inert and stable lipophilic organic solvent having a boiling point of 65-205 deg.C optionally together with an oxygenation agent, an antiknock agent, other additives such as a dispersant, a cleaning agent or the like.