Lubricating oil compositions containing graft copolymer as visco

Details Lubricating oil compositions containing graft copolymer as visco Lubricating oil compositions containing graft copolymer as visco

1980-10-27

1985-03-19

Metz, Andrew

Compositions

Electrolytes for electrical devices

525285, 525301, 525381, 525382, 525386, C10M 132

Patent

active

045058342

ABSTRACT:
Lubricating oil dispersant VI improvers are made by grafting maleic anhydride to an ethylene/.alpha.-olefin-non-conjugated diene terpolymer in a hydrogen-treated mineral oil solvent using a free radical and then reacting the grafted intermediate with an amine containing only one primary amine group, 1-6 amino nitrogen atoms and 20-36 carbon atoms.

REFERENCES:
patent: 3219666 (1965-11-01), Norman et al.
patent: 3235503 (1966-02-01), de Vries
patent: 4089794 (1978-05-01), Engel et al.
patent: 4137185 (1979-01-01), Gardiner et al.
patent: 4160739 (1979-07-01), Stambaugh et al.
patent: 4161452 (1979-07-01), Stambaugh et al.
patent: 4169063 (1979-09-01), Kiousky
patent: 4171273 (1979-10-01), Waldbillig et al.
patent: 4219432 (1980-08-01), Girgenti et al.
patent: 4235731 (1980-11-01), Kiousky

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