Lubricating compositions containing hydrogenated butadiene-isopr

Details Lubricating compositions containing hydrogenated butadiene-isopr Lubricating compositions containing hydrogenated butadiene-isopr

1976-01-29

1977-06-28

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 56R, 252 59, C10M 132

Patent

active

040324591

ABSTRACT:
Novel lubricating compositions are provided comprising a lubricating oil modified with a pour point depressant and as a superior viscosity index improver, a copolymer of butadiene and isoprene having between 20-55% 1,4-configuration, this polymer then having been hydrogenated to remove substantially all of the olefinic unsaturation.

REFERENCES:
patent: 3215632 (1965-11-01), Hughes et al.
patent: 3554911 (1971-01-01), Schiff et al.
patent: 3600311 (1971-08-01), Naiman et al.
patent: 3772196 (1973-11-01), St. Clair et al.
patent: 3795615 (1974-03-01), Pappas et al.
patent: 3835053 (1974-09-01), Meier et al.
patent: 3910856 (1975-10-01), Kruka et al.
patent: 3959161 (1976-05-01), Dawans et al.
patent: 3965019 (1976-06-01), St. Clair et al.

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