Additives for lubricants

Details Additives for lubricants Additives for lubricants

C - Chemistry, Metallurgy

08

F

253/110

C08F 8/32 (2006.01)

Patent

CA 1077194

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 and their "polyaminox" derivatives have been found to have compatibility with alkyl esters and partial alkyl esters-partial amide derivatives of relatively low molecular weight copolymers of an ethylenically ethylenically unsaturated dicarboxylic anhydride, preferably maleic anhydride, and a l-olefin having from 8 to 24 carbon atoms, when formulated together into a lubricant in which the major proportion is a mineral lubricating oil. These copolymer additives act as viscosity index improvers, pour point depressants and sludge inhibitors. The partial alkyl ester-partial derivatives per se also are useful as diapersantand/or pour point depressant additives for mineral oil lubricants.

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