Process for overbased petroleum oxidate

Compositions – Electrolytes for electrical devices

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252 39, 252 41, 252 55, C10M15920

Patent

active

050134639

ABSTRACT:
A method is disclosed for preparing overbased petroleum oxidates which comprises carbonating a petroleum oxidate in the presence of a base selected from the group consisting of alkali metal compounds and alkaline earth metal components. The petroleum oxidate is made by oxidizing petroleum oil in the presence of a base. The overbased petroleum oxidates are useful as rust inhibitors, dispersants, detergents, friction modifiers and as a substrate for overbased sulfonates, phenates, and salicylates. The overbased sulfonates, phenates and salicylates are easily overbased and have improved storage stability and improved rust inhibition.

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