Fuels
AssigneeInnospec Fuel Specialties LLC
InventorsJason Allen LENNON, David Arthur DANIELS
Life of this patent
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Abstract
An additive composition for a diesel fuel, the additive composition comprising: a first additive comprising one or more of: the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine; the reaction product of an α, β dicarboxylic acid or a derivative thereof and a primary amine; and the reaction product of a polyamine and a fatty acid; and a second additive which is a terpolymer obtained by reacting monomers of: an α-olefin; an ester of an unsaturated alcohol; and a third monomer different to (x) and (y) comprising an alkene functional group.
Claims22
A diesel fuel composition comprising a major proportion of a diesel fuel comprising mineral diesel and from 1 to 30 wt % of a fuel selected from biodiesel, renewable diesel and mixtures thereof, and:
- a first additive (i) comprising:
- (a) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine;
- a second additive (ii) which is a terpolymer obtained by reacting monomers of:
- (x) an α-olefin;
- (y) an ester of an unsaturated alcohol;
- and
- (z) a third monomer different to (x) and (y) comprising an alkene functional group.
A method of improving the lower temperature flow properties of a diesel fuel composition comprising mineral diesel and from 1 to 30 wt % of a fuel selected from biodiesel, renewable diesel and mixtures thereof, the method comprising admixing into the composition:
- a first additive (i) comprising:
- (a) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine;
- and
- a second additive (ii) which is a terpolymer obtained by reacting monomers of:
- (x) an α-olefin;
- (y) an ester of an unsaturated alcohol;
- and
- (z) a third monomer different to (x) and (y) comprising an alkene functional group.
A method of improving the performance in an LTFT test of a diesel fuel composition comprising mineral diesel and from 1 to 30 wt % of a fuel selected from biodiesel, renewable diesel and mixtures thereof, the method comprising:
- dosing into the diesel fuel composition:
- a first additive (i) comprising:
- (a) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine;
- a second additive (ii) which is a terpolymer obtained by reacting monomers of:
- (x) an α-olefin;
- (y) an ester of an unsaturated alcohol;
- and
- (z) a third monomer different to (x) and (y) comprising an alkene functional group;
- and
- measuring the degree to which the LTFT is depressed compared with an otherwise identical fuel except for the presence of additive (i) and additive (ii).
Dependencies are inferred from the claim text.