Dual pour depressant combination for viscosity index improved wa

Details Dual pour depressant combination for viscosity index improved wa Dual pour depressant combination for viscosity index improved wa

1976-05-20

1978-05-09

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 59, C10M 124

Patent

active

040885895

ABSTRACT:
Multigrade lubricating oils blended from petroleum distillates and, if desired, a bright stock containing waxy or wax-like components and modified by the presence of copolymeric ethylene-higher alpha-olefins viscosity index improving agents have their low temperature performance markedly improved when said copolymer contains a minor weight proportion of ethylene by the addition of from about 0.15 to about 1, preferably 0.2 to 0.5, wt. %, based upon the total weight of said lubricating oil composition of a combination of pour point depressants comprising: (a) from about 0.05 to about 0.75 wt. % of an oil-soluble condensation product of a chlorinated wax of from about 10 to about 50 carbon atoms and a mono- or dinuclear aromatic compound; and (b) from about 0.05 to about 0.75 wt % of an oil-soluble polymer of C.sub.10-18 alkyl acrylate or methacrylate and/or an interpolymer of a vinyl alcohol ester of a C.sub.2 to C.sub.18 alkanoic acid and di(C.sub.6 -C.sub.18 alkyl) fumarate.

REFERENCES:
patent: 1963917 (1934-06-01), MacLaren
patent: 1963918 (1934-06-01), MacLaren
patent: 2091627 (1937-08-01), Bruson
patent: 2936300 (1960-05-01), Tutwiler et al.
patent: 3136743 (1964-06-01), Conway et al.
patent: 3324034 (1967-06-01), Merz et al.
patent: 3475321 (1969-10-01), Henselman et al.
patent: 3522180 (1970-07-01), Sweeney et al.
patent: 3551336 (1970-12-01), Jacobsson et al.
patent: 3697429 (1972-10-01), Engel et al.

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