Process for overbased petroleum oxidate

Details Process for overbased petroleum oxidate Process for overbased petroleum oxidate

C - Chemistry, Metallurgy

07

C

253/125, 260/506

C07C 51/21 (2006.01) C07C 303/32 (2006.01) C10M 129/56 (2006.01) C10M 159/20 (2006.01)

Patent

CA 1330805

Abstract A method is disclosed for preparing overbased petro- leum oxidates which comprises carbonating a petroleum oxi- date in the presence of a base selected from the group consisting of alkali metal compounds and alkaline earth metal compounds. The petroleum oxidate is made by oxidiz- ing petroleum oil in the presence of a base. The over- based petroleum oxidates are useful as rust inhibitors, dispersants, detergents, friction modifiers and as a sub- strate for overbased sulfonates, phenates, and salicy- lates. The overbased sulfonates, phenates and salicylates are easily overbased and have improved storage stability and improved rust inhibition.

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