abstract |
A dispersant compound comprising the reaction product of (i) a hydrocarbylcarbonyl compound, (ii) a polycarbonyl compound having at least three carbonyl acylating functions, and (iii) a primary amine moiety of a polyamine, wherein the polycarbonyl compound is a compound of formula I: wherein n is in the range of 0 to about 10, and wherein R 1 , R 2 , R 3 , R 4 and R 5 are independently selected from a hydrogen atom and linear or branched C 1 to C 10 alkyl radicals, wherein the polyamine is a compound of formula II: wherein R 6 is a hydrogen atom or a low molecular weight alkyl group having from about 1 to about 6 carbon atoms, m is an integer ranging from about 1 to about 3, and n is an integer ranging from about 2 to about 10, wherein the hydrocarbylcarbonyl compound is a compound of the following formula IV: wherein R 14 is a hydrocarbyl radical. |