C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
253/128
C08F 210/18 (2006.01) C08F 8/50 (2006.01) C10M 119/02 (2006.01) C10M 143/02 (2006.01) C10M 143/16 (2006.01)
Patent
CA 1200235
ABSTRACT OF THE DISCLOSURE A lubricating oil composition comprising a major amount of mineral oil of lubricating viscosity and at least a viscosity index-improving amount of an oil soluble, saturated ethylene copolymer, preferably an and mechanically degraded ethylene copolymer, having an ethylene content of 26-79 wt. % (35-85 mole %), a C3 to C18 higher alpha-olefin and from 0.05 to 3.0, optimally 0.2 to 0.8, wt. % of 2,5-norbornadiene 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 as compared to the same formulation using an ethylene copolymer not containing 2,5-norbornadiene.
341746
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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