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: (i) a first additive comprising one or more of: (a) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine; (b) the reaction product of an α, β dicarboxylic acid or a derivative thereof and a primary amine; and (c) the reaction product of a polyamine and a fatty acid; and (ii) a second additive 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.
Claims6
A diesel fuel composition comprising a major proportion of a diesel fuel and:
- from 50 to 5000 ppm of a first additive (i) comprising one or more of:
- (a) the reaction product of a carboxylic acid selected from nitrilotriacetic acid, ethylenediamine tetraacetic acid and propylene-1,2-diamine tetraacetic acid and an amine selected from dioleylamine, dipalmitamine, dicoconut fatty amine, distearylamine, dibehenyl amine, ditallow fatty amine and hydrogenated ditallow fatty amine;
- (b) the reaction product of maleic anhydride and an amine selected from coconut amine, tallow fatty amine, oleyl amine, arachidyl amine, tridecyl amine and behenyl amine;
- and
- (c) the reaction product of polyethylene polyamines having 2 to 6 nitrogen atoms and fatty acids having 16 to 20 carbon atoms;
- and
- from 50 to 5000 ppm of a second additive (ii) which is a terpolymer obtained by reacting monomers of:
- (x) ethylene;
- (y) vinyl or propenyl esters of C1 to C20 carboxylic acids;
- and
- (z) a third monomer different to (x) and (y) comprising an alkene functional group selected from:
- an α-olefin;
- an α,β unsaturated carboxylic acid or an ester thereof;
- and
- an ester of an unsaturated alcohol,
- wherein the diesel fuel comprises mineral diesel and at least 5 vol % of a renewable diesel fuel obtained by the hydrodeoxygenation of fats and oils;
- and
- wherein the diesel fuel composition has an improved performance in a low temperature flow test (as defined in ASTM D4539 or CAN CGSB-3.0, no. 140.1-2017) as compared to the same fuel without the first additive (i) and the second additive (ii).
A method of improving the lower temperature flow properties of a diesel fuel composition, the method comprising admixing into the composition:
- from 50 to 5000 ppm of a first additive (i) comprising one or more of:
- (a) the reaction product of a carboxylic acid selected from nitrilotriacetic acid, ethylenediamine tetraacetic acid and propylene-1,2-diamine tetraacetic acid and an amine selected from dioleylamine, dipalmitamine, dicoconut fatty amine, distearylamine, dibehenyl amine, ditallow fatty amine and hydrogenated ditallow fatty amine;
- (b) the reaction product of maleic anhydride and an amine selected from coconut amine, tallow fatty amine, oleyl amine, arachidyl amine, tridecyl amine and behenyl amine;
- and
- (c) the reaction product of polyethylene polyamines having 2 to 6 nitrogen atoms and fatty acids having 16 to 20 carbon atoms;
- and
- from 50 to 5000 ppm of a second additive (ii) which is a terpolymer obtained by reacting monomers of:
- (x) ethylene;
- (y) vinyl or propenyl esters of C1 to C20 carboxylic acids;
- and
- (z) a third monomer different to (x) and (y) comprising an alkene functional group selected from:
- an α-olefin;
- an α,β unsaturated carboxylic acid or an ester thereof;
- and
- an ester of an unsaturated alcohol,
- wherein the diesel fuel comprises mineral diesel and at least 5 vol % of a renewable diesel fuel obtained by the hydrodeoxygenation of fats and oils;
- and
- wherein the method provides an improved performance in a low temperature flow test (as defined in ASTM D4539 or CAN CGSB-3.0, no. 140.1-2017).
Dependencies are inferred from the claim text.