Lubricants, functional fluid and grease compositions containing

Compositions – Electrolytes for electrical devices

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Details

252 327E, 252 33, 252 332, 252 45, 252 496, 252 497, 252 498, C10M13510, C10M12500

Patent

active

054645484

ABSTRACT:
The invention includes a lubricating composition comprising a major amount of an oil of lubricating viscosity, and a minor amount of (A) a sulfite or sulfate overbased or borated overbased metal salt of an acidic organic compound, wherein the lubricating composition contains less than 1.5% by weight of the reaction product of a polyisobutene substituted succinic anhydride and a polyamine, and provided that when (A) is a sulfate overbased or borated overbased metal salt, then the lubricating composition includes (B) at least one phosphorous of boron antiwear/extreme pressure agent, or (C) a sulfur compound. The invention also includes grease and functional fluids containing the sulfite and sulfate overbased metal salts. These composition have improved antiwear, antiweld, and extreme pressure properties.

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