Antioxidants and methods of making antioxidants
AssigneeAnderol, Inc.
InventorEugene P. DiBella
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Abstract
Antioxidants for industrial, automotive, and aviation lubricants and methods of making the same are provided. A process using alkylated diphenylamines; alkylated phenyl-α-naphthyl amines; and a metal catalyst to form oxidates is provided. The metal catalyst is a combination of a cation and an organic anion, for example, a metal acetylacetone. The reaction takes place in the presence of oxygen to form an antioxidant comprising oligomers of the alkylated diphenylamine and the alkylated phenyl-α-naphthyl amine, and a metal component of the catalyst.
Claims20
A process comprising:
- providing an alkylated diphenylamine;
- providing an alkylated phenyl-α-naphthyl amine;
- providing a catalyst that comprises a cation and an organic anion;
- mixing the alkylated diphenylamine, the alkylated phenyl-α-naphthyl amine, and the catalyst to form a reaction mixture;
- and
- flowing an oxygen-containing gas through the reaction mixture to form an antioxidant comprising oligomers of the alkylated diphenylamine and the alkylated phenyl-α-naphthyl amine, and the cation.
An antioxidant composition produced from a process of
- providing an alkylated diphenylamine;
- providing an alkylated phenyl-α-naphthyl amine;
- providing a metal acetylacetoneate;
- mixing the alkylated diphenylamine, the alkylated phenyl-α-naphthyl amine, and the metal acetylacetoneate to form a reaction mixture;
- and
- flowing an oxygen-containing gas through the reaction mixture;
- wherein the antioxidant composition comprises oligomers of the alkylated diphenylamine and the alkylated phenyl-α-naphthyl amine, and a metal component of the metal acetylacetoneate.
A method of providing an antioxidant for industrial, automotive and aviation lubricants comprising providing to said lubricants an antioxidant comprising oligomers of an alkylated diphenylamine and an alkylated phenyl-α-naphthyl amine, and a metal component of a metal acetylacetoneate.
Dependencies are inferred from the claim text.