Oleaginous compositions containing novel ethylene alpha-olefin p

Details Oleaginous compositions containing novel ethylene alpha-olefin p Oleaginous compositions containing novel ethylene alpha-olefin p

1990-02-01

1992-09-29

Hearn, Brian E.

Compositions

Electrolytes for electrical devices

252 52A, 585 10, 585 12, C08F21016, C10M14102

Patent

active

051512041

ABSTRACT:
The present invention is directed to a lubricating oil composition exhibiting improved viscosity index comprising lubricating oil and a viscosity improving effective amount of ethylene alpha-olefin polymer comprising monomer units derived from ethylene and at least one alpha-olefin represented by the formula H.sup.2 C=CHR.sup.1 wherein R.sup.1 is an alkyl group of from 1 to 18 carbon atoms, and wherein said polymer has a number average molecular weight of from above 20,000 to about 500,000, and an average of at least about 30% of the polymer chains contain terminal ethylidene unsaturation.

REFERENCES:
patent: 3563964 (1971-02-01), Wagensommer
patent: 3697429 (1970-06-01), Engel et al.
patent: 4306041 (1981-12-01), Cozewith et al.
patent: 4507515 (1985-03-01), Johnston et al.
patent: 4526945 (1985-07-01), Carlson et al.
patent: 4540753 (1985-09-01), Cozewith et al.
patent: 4575574 (1986-03-01), Kresge et al.
patent: 4666619 (1987-05-01), Kresge et al.
patent: 4668834 (1987-05-01), Rim et al.
patent: 4886861 (1989-12-01), Janowicz

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