Fuel compositions
AssigneeAfton Chemical Corporation
InventorDavid John Claydon
Life of this patent
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Abstract
There is disclosed a fuel composition comprising (a) a major amount of a middle distillate fuel comprising from about 0.5% to about 30% by weight fatty acid methyl esters, relative to the total amount of the fuel composition; and (b) a minor amount of an additive composition comprising an antioxidant system comprising at least one cyclic amine antioxidant and at least one phenolic antioxidant, and at least one ashless dispersant, wherein said fuel composition demonstrates reduced sediment formation as compared to a fuel composition devoid of the additive composition, and methods of use thereof.
Claims15
A fuel composition comprising:
- (a) a major amount of a middle distillate fuel comprising from about 0.5% to about 30% by weight fatty acid methyl esters, relative to the total amount of the fuel composition;
- and
- (b) a minor amount of an additive composition comprising an antioxidant system comprising N,N-dimethyl cyclohexamine, at least one phenolic antioxidant, and at least one hydrocarbyl-substituted succinimide dispersant, wherein the hydrocarbyl-substituted succinimide is present in an amount ranging from about 60 ppm to about 300 ppm, and wherein the N,N-dimethyl cyclohexamine and the at least one phenolic antioxidant are present in an amount to deliver from about 20 ppm to about 100 ppm;
- wherein said fuel composition demonstrates reduced sediment formation as compared to a fuel composition devoid of the additive composition.
A method of reducing sediment formation in a fuel composition, said method comprising:
- providing a major amount of a middle distillate fuel comprising from about 0.5% to about 30% by weight fatty acid methyl esters;
- and
- mixing with said fuel a minor amount of an additive composition comprising an antioxidant system comprising N,N-dimethylcyclohexamine, at least one phenolic antioxidant, and at least one hydrocarbyl-substituted succinimide dispersant, wherein the hydrocarbyl-substituted succinimide is present in an amount ranging from about 60 ppm to about 300 ppm, and wherein the N,N-dimethyl cyclohexamine and the at least one phenolic antioxidant are present in an amount to deliver from about 20 ppm to about 100 ppM.
Dependencies are inferred from the claim text.