Lubricant additive

Details Lubricant additive Lubricant additive

C - Chemistry, Metallurgy

10

M

253/37

C10M 167/00 (2006.01)

Patent

CA 1177817

ABSTRACT OF THE DISCLOSURE The present invention provides a lubricant additive composition which functions both as a friction reducing agent and as an extreme pressure additive, and also has the ability, when incorporated in a lubricant, to improve substantially the low temperature viscosity characteristics of the lubricant. The composition, in one form, comprises: (1) 35% by weight of 24% lead naphthenate solution in an organic solvent therefor; (2) 40% by weight of "Tellus 32 Oil"(Trademark), this being a blend of HVI 100 Neutral Oil with HVI 250 Neutral Oil; and (3) 25% by weight of desulfurized diesel oil. In a second, heavy-duty form, the composition comprises, about 5% to about 45% by weight of a lead soap of an organic acid, said lead soap being in the form of a solution in a liquid solvent therefor, said solution containing from 10%-32% by weight lead; 20%-50% by weight of an oil having a viscosity in the range of from about 45 SUS at 100°F. to about 3000 SUS at 100°F.; 5%-40% by weight of desulfurized diesel oil, or of a hydrocarbon oil having physical characteristics comparable to said diesel oil; 0.10%-5.00% by weight of an oil soluble zir- conium-containing soap selected from the group consisting of zirconium naphthenate, zirconium 2-ethylhexanoate, zirconium 3,5-dimethyl hexanoate, and zirconium neodecanoate, or mixtures thereof, and 0.10%-5.00% by weight of calcium in an oil soluble form, as calcium naphthenate or calcium 2-ethylhexanoate; said composition functioning both as a friction reducing agent and as an extreme pressure additive.

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