Dihydrocarbyl substituted phenylenediamine-derived phenolic prod

Fuel and related compositions – Liquid fuels – Organic nitrogen compound containing

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44428, C10L 122

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active

053124618

ABSTRACT:
A lubricating oil, grease or fuel composition contains an antioxidant amount of a Mannich base reaction product of an N-hydrocarbyl-substituted-phenylenediamine or an N,N'-dihydrocarbyl-substituted phenylenediamine such as N,N'-di-sec-butyl-para-phenylenediamine, an aldehyde or ketone and a hindered phenol such as 2,6-di-tert-butylphenol.

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