Oil compositions containing ethylene copolymers

Details Oil compositions containing ethylene copolymers Oil compositions containing ethylene copolymers

1989-06-08

1990-06-12

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 50, 585 12, C10M14318

Patent

active

049330993

ABSTRACT:
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 oxidatively and mechanically degraded ethylene copolymer having an ethylene content of 26-79 wt. % (35-85 mole %), a C.sub.3 to C.sub.18 higher alpha-olefin and from 0.05 to 3.0, optimally 0,8 to 2.5 wt. % of 2,5-norbornadiene and preferably at least a pour point depressing amount of lubricaitng oil pour point depressant, e.g. an alkyl fumarate vinyl acetate copolymer, whereby superior low temperature viscometrics is provided to said lubricating oil composition, compared to the same formulation using an ethylene copolymer not containing 2,5-norbornadiene.

REFERENCES:
patent: 2936300 (1968-05-01), Lutwiler et al.
patent: 3499741 (1970-03-01), Sweeney
patent: 3507636 (1973-10-01), Sweeney
patent: 3790480 (1974-02-01), Campbell et al.

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