Oil-soluble reaction products of polyenes

摘要

The invention provides reaction products of: (A) an acylating reagent, with (D) a polyalkenyl derivative of an ethylenically unsaturated carboxylic reagent (C), and (E) a polyamine containing at least two -NH2 and/or - NH groups, or with (F) the pre-formed product of reagents (D) and (E), wherein the acylating reagent (A) is the reaction product of (B) a C4-C20 polyene or oligomer prepared therefrom, and (C) an ethylenically unsaturated carboxylic reagent; lubricating oil compositions, fuel compositions and additive concentrates containing them; and use of the reaction products as dispersant additives.