Succinic anhydride promoter overbased magnesium sulfonates...

Details Succinic anhydride promoter overbased magnesium sulfonates... Succinic anhydride promoter overbased magnesium sulfonates...

C - Chemistry, Metallurgy

10

M

253/94

C10M 135/08 (2006.01) C10M 141/08 (2006.01) C10M 159/24 (2006.01)

Patent

CA 1271739

SUCCINIC ANHYDRIDE PROMOTER OVERBASED MAGNESIUM SULFONATES AND OILS CONTAINING SAME ABSTRACT OF THE DISCLOSURE An engine or lubricating oil containing .03 to .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 sulfo- nate 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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