C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/128
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.
300212
Elliott Robert L.
Engel Lawrence J.
Gardiner J. Brooke
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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