Patent ID: 6733550
Filing Date: 2004-05-11
Classification: C10L

Abstract:
A fuel oil composition comprising a major amount of a liquid hydrocarbon middle distillate fuel oil having a sulphur concentration of at most 0.05% by weight, and a minor proportion of a dispersant additive obtained by reacting, in a molar ratio A:B in the range 4:3 to 1:10, (A) a polyalkenyl derivative of monoethylenically unsaturated C4-C10 dicarboxylic acid material in which the number average molecular weight (Mn) of the polyalkenyl chain is in the range from 850 to 1150 with (B) a polyamine of general formulaH2N(CH2)mâ€”[NH(CH2)m]nâ€”NH2â€ƒâ€ƒ(1) wherein m is in the range from 2 to 4 and n is in the range from 1 to 3.