Process for the preparation of oil-soluble hydrogenated modified

Details Process for the preparation of oil-soluble hydrogenated modified Process for the preparation of oil-soluble hydrogenated modified

1984-07-13

1985-12-10

Ziegler, Jacob

Compositions

Electrolytes for electrical devices

252 50, 525153, 525154, 525280, C08F29300, C10M 132, C10M 326, C10M 520

Patent

active

045578494

ABSTRACT:
A process for the preparation of an oil-soluble, star-shaped product having viscosity index-improving and dispersant properties, comprising modifying a hydrogenated star-shaped polymer wherein said arms are hydrogenated homopolymers and copolymers of conjugated dienes and mono-alkenyl arenes, and wherein the hydrogenated polymer is metallated with an organolithium compound in the presence of a metallation promoter, and subsequently reacted with a vinyl pyridine or a carbonyl group containing organic compound.

REFERENCES:
patent: 4358565 (1982-11-01), Eckert

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