Dispersant and v.i. additives for lubricants

Details Dispersant and v.i. additives for lubricants Dispersant and v.i. additives for lubricants

C - Chemistry, Metallurgy

10

M

253/102

C10M 143/18 (2006.01) B01F 17/00 (2006.01)

Patent

CA 1069878

ABSTRACT OF THE DISCLOSURE Copolymers of ethylene and a C3 to C18 straight or branched chain. .alpha.-olefin, or terpolymers of ethylene, a C3 to C18 .alpha.-olefin and a C5 to C12 non-conjugated diolefin, or mixtures thereof, are dissolved in a mineral lubricating oil, and the solution oxidized with air or an oxygen-containing gas. The oxidized solution, in which both the polymer and the oil have been oxidized, is reacted with an amine compound to form a polyaminox composition having utility as a dispersant additive for lubricants. When made from high molecular weight polymers, the polyaminox composition is useful as a multi- functional dispersant-viscosity index improver additive for lubricants.

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