Lubricating oil compositions and additives for use therein

C - Chemistry – Metallurgy – 10 – M

Patent

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C10M 133/12 (2006.01) C10M 167/00 (2006.01)

Patent

CA 2010606

Substituted para-phenylene diamines have been found to be effective antioxidants capable of protecting crankcase lubricating oils from thickening and sludge formation after prolonged exposure to oxygen at elevated temperature.

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