Lubricating compositions containing ashless catalytic antioxidant additives
The invention comprises lubricating compositions and hydraulic fluids containing N,N′-diaryl-o-phenylenediamine compounds that impart good levels of oxidation inhibition in the lubricants and hydraulic fluids. The invention further comprises a method of making N,N′-diaryl-o-phenylenediamine compounds.
ExxonMobil Research and Engineering Company
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Manuel A. Michael E. Jacob J. Abhimanyu O. Manika
Francisco Landis Habeeb Patil Varma-Nair