Fuel high temperature antioxidant additive
AssigneeExxonMobil Research and Engineering Company
InventorDavid J. Abdallah
Life of this patent
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Abstract
High temperature antioxidant additives and methods that improve a liquid fuel composition's thermal oxidative stability are disclosed. A liquid fuel composition may comprise a liquid fuel and a high temperature antioxidant additive. The high temperature antioxidant additive may comprise an aromatic carbocyclic ring that is monocyclic and comprises substituents comprising a hydroxyl group and an iminomethyl group positioned in an ortho relationship.
Claims19
A liquid fuel composition comprising:
- a liquid fuel;
- and
- a high temperature antioxidant additive comprising an aromatic carbocyclic ring that is monocyclic and comprises substituents comprising a hydroxyl group and an iminomethyl group positioned in an ortho relationship;
- wherein the high temperature antioxidant additive has the formula:
- wherein R1 is an alkyl or alkenyl group of 3 carbon atoms to 18 carbon atoms and wherein R2, R3, R4, and R5 are each hydrogen.
A liquid fuel composition comprising:
- a liquid fuel in an amount of about 98 vol.% or greater;
- and
- a high temperature antioxidant additive comprising an aromatic carbocyclic ring that is monocyclic and comprises substituents comprising a hydroxyl group and an iminomethyl group, wherein the high temperature antioxidant additive has the following formula:
- wherein the R2, R3, R4, and R5 are each hydrogen, and wherein R1 is octadecyl.
A method for improving thermal oxidative stability of a liquid fuel at high thermal loads, comprising:
- combusting in an internal combustion engine a fuel composition comprising the liquid fuel and an antioxidant additive, wherein the antioxidant additive comprising an aromatic carbocyclic ring that is monocyclic and comprises substituents comprising a hydroxyl group and an iminomethyl group positioned in an ortho relationship;
- wherein the antioxidant additive has the formula:
- wherein R1 is an alkyl or alkenyl group of 3 carbon atoms to 18 carbon atoms and wherein R2, R3, R4, and R5 are each hydrogen.
Dependencies are inferred from the claim text.