Ethylene polymers and oil compositions containing same

Details Ethylene polymers and oil compositions containing same Ethylene polymers and oil compositions containing same

C - Chemistry, Metallurgy

10

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C10M 143/02 (2006.01) C08F 8/32 (2006.01) C10M 143/18 (2006.01) C10M 149/00 (2006.01)

Patent

CA 1111019

ABSTRACT OF THE DISCLOSURE An ethylene polymer, preferably an oxidatively and mechanically degraded ethylene polymer comprising 26-79 weight percent (35-85 mole percent) ethylene, a C3 to C18 higher alpha-olefin and from about 1-25 weight percent of an alkyl norbornene having from about 8 to 28 carbons atoms, preferably ethyl norbornene, which is suitable as a viscosity index improver for lubricating oils. The polymer may be used in a lubricating oil composition comprising a major amount of lubricating oil and a viscosity index-improving amount of said oil-soluble polymer and preferably at least a pour point depressing amount of a lubricating oil pour point depressant, e.g. an alkyl fumarate/vinyl acetate copolymer, whereby superior low temperature viscometrics is provided to said lubricating oil composition.

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