Alcohol borated esters to improve bearing corrosion in...

Details Alcohol borated esters to improve bearing corrosion in... Alcohol borated esters to improve bearing corrosion in...

C - Chemistry, Metallurgy

10

M

C10M 163/00 (2006.01) C10M 141/12 (2006.01)

Patent

CA 2278903

Disclosed is a composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising: (A) a dispersant with a total base number of from 20 to 160 on an oil-free basis, with the proviso that the dispersant is substantially boron-free; (B) a metal salt of a phosphorus acid; and (C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises (D) a borate ester.

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