Demulsified lubricating oil compositions

Details Demulsified lubricating oil compositions Demulsified lubricating oil compositions

C - Chemistry, Metallurgy

10

M

253/102

C10M 161/00 (2006.01) C10M 165/00 (2006.01) C10M 167/00 (2006.01)

Patent

CA 1331599

ABSTRACT OF THE DISCLOSURE In accordance with one aspect, the present invention is directed to a lubricating oil additive mixture comprising (A) a lubricating oil dispersant additive comprising at least one of (1) ashless dispersants and/or (2) polymeric viscosity index improver dispersants, and (B) a demulsifier additive comprising the reaction product of an alkylene oxide and an adduct obtained by reacting a bis- epoxide with a polyhydric alcohol. In a preferred embodiment, the lubricating oil additive mixtures further comprises (C) a compatibilizer additive for the demulsifier, which comprises a glycol eater or a hydroxyamide derivative of a carboxylic acid having a total of from 24 to 90 carbon atoms and at least one carboxylic group per molecule, for enhanced solubility, viz. stability, of the demulsifier in the oil solutions containing such dispersants.

590597

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