Process for forming oil-soluble product

Details Process for forming oil-soluble product Process for forming oil-soluble product

1982-08-02

1983-10-11

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

252 50, 252 515R, 525294, 525338, C08F 804

Patent

active

044091206

ABSTRACT:
Lubricating oil additives having both dispersant and viscosity index-improving properties are prepared by contacting a star-shaped polymer having a poly(polyalkenyl aromatic) nucleus, at least three conjugated diene homopolymer or copolymer arms linked to the nucleus, and at least one polymerized nitrogen containing polar compound arm linked to the nucleus, with a rectant selected from p-toluenesulfonylhydrazide and hydrazine under conditions wherein the reactants release H.sub.2 N.sub.2, which adds across the residual double bonds in the polymer therein hydrogenating the aliphatic unsaturation and releasing N.sub.2 gas.

REFERENCES:
patent: 3763044 (1973-10-01), Anderson
patent: 3772196 (1973-11-01), St. Clair
patent: 4077893 (1978-03-01), Kiovsky
patent: 4085055 (1978-04-01), Durand
patent: 4116917 (1978-09-01), Eckert
patent: 4141847 (1979-02-01), Kiovsky
patent: 4358565 (1982-11-01), Eckert

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