Succinic anhydride promoter overbased magnesium sulfonates and o

Details Succinic anhydride promoter overbased magnesium sulfonates and o Succinic anhydride promoter overbased magnesium sulfonates and o

1985-04-11

1987-03-03

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

252 18, 252 332, 252 333, C10M12500

Patent

active

046473874

ABSTRACT:
An engine or lubricating oil containing 0.03 to 0.3% by weight of a succinic anhydride promoter reaction product for a overbased magnesium sulfonate, based on the presence of 0.5% by weight of Mg metal in the oil, and wherein the weight of the reaction product is commensurately proportional to the weight of Mg metal in the oil, and which oil is a free of post sulfonate formation water-tolerance additives, nevertheless passes the rigorous Cummins water tolerance test. Copromoters such as a naphthenic acid and/or a salicylic acid may be employed.

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