Process for preparing viscosity index improvers for lubricating

Details Process for preparing viscosity index improvers for lubricating Process for preparing viscosity index improvers for lubricating

1980-06-04

1982-04-27

Howard, Jacqueline V.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By c content reduction, e.g., cracking, etc.

585241, 585 10, 585 13, 208106, C07C 404

Patent

active

043272371

ABSTRACT:
A process for preparing viscosity index improvers for lubricating oils consisting of thermally cracking a solution of an olefin copolymer in mineral oil at a temperature of between 250.degree. C. and 350.degree. C. in an inert atmosphere said solution containing free radical scavengers.

REFERENCES:
patent: 3441628 (1969-04-01), Ratzsch et al.
patent: 3524732 (1970-08-01), Sweeney
patent: 3956414 (1976-05-01), Oshima

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