Fuel additives
AssigneeInnospec Limited
InventorsMartin Roberts, Christine Ann Blundell, Anthony Finn
Life of this patent
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Abstract
The invention provides a fuel additive compound represented by the general formula (I) wherein n is zero or an integer from 1 to 20 and in each succinic acid moiety one of R1 and R3 is a C3-C80 internal olefin moiety, and the other of R1 and R3 is hydrogen. Additive compositions containing such compounds have low viscosity and are useful in increasing the lubricity of middle distillate fuels.
Claims10
A method of improving the lubricity of a fuel comprising adding a compound of general formula I to the fuel in order to obtain a lubricity improvement, compared with the corresponding untreated base fuel wherein said compound comprises
- wherein n is zero or an integer from 1 to 20 and in each succinic acid moiety one of R1 and R3 is a C3-C80 internal olefin moiety, and the other of R1 and R3 is hydrogen, and R2 is the residue of a polyhydroxy alcohol.
A method of improving the lubricity of a fuel comprising adding a composition to the fuel in order to obtain a lubricity improvement, compared with the corresponding untreated base fuel, wherein said composition comprises compounds of general formula I:
- wherein n is zero or an integer from 1 to 20 and in each succinic acid moiety one of R1 and R3 is a C3-C80 internal olefin moiety, and the other of R1 and R3 is hydrogen, and R2 is the residue of a polyhydroxy alcohol.
Dependencies are inferred from the claim text.