Stabilizing compositions for lubricants

Details Stabilizing compositions for lubricants Stabilizing compositions for lubricants

2011-04-19

2011-04-19

Caldarola, Glenn A (Department: 1771)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic sulfur compound

C508S567000, C508S570000, C508S572000, C508S563000

Reexamination Certificate

active

07928045

ABSTRACT:
A lubricant composition is disclosed that comprises lubricating oil and a mixture of at least two antioxidants, the first antioxidant being a substituted diphenylamine and/or a heterocyclic amine and the second antioxidant being a substituted phenol. Also disclosed is a method of increasing the oxidation stability of a lubricating oil comprising adding thereto at least two antioxidants, the first antioxidant being a substituted diphenylamine and/or a heterocyclic amine and the second antioxidant being a substituted phenol.

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