Dihydrocarbyl substituted phenylenediamine-derived phenolic prod

Compositions – Electrolytes for electrical devices

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Details

252 475, 252390, 252401, C10M13314, C10M13354

Patent

active

052079392

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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