Dispersant-VI improver product

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525294, 252 50, 252 515R, C08F29704

Patent

active

044278349

ABSTRACT:
Lubricating oil additives having both dispersant and viscosity index-improving properties comprise a poly(polyalkenyl aromatic)nucleus, at least three hydrogenated conjugated diene homopolymer or copolymer arms linked to the nucleus, and at least one polymerized nitrogen containing polar compound arm linked to the nucleus.

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patent: 3700748 (1972-10-01), Winkler
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patent: 3766300 (1973-10-01), De La Mare
patent: 3772196 (1973-11-01), St. Clair et al.
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patent: 3985830 (1976-10-01), Fetters
patent: 4077893 (1978-03-01), Kiovsky
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patent: 4116917 (1978-09-01), Eckert
patent: 4141847 (1979-02-01), Kiovsky
patent: 4358565 (1982-11-01), Eckert

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