Stabilizing compositions for lubricants
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United States of America Patent
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Apr 19, 2011
Grant Date -
Aug 30, 2007
app pub date -
Feb 21, 2007
filing date -
Feb 28, 2006
priority date (Note) -
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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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