Dispersant-VI improver product

Details Dispersant-VI improver product Dispersant-VI improver product

1981-12-21

1984-01-24

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...

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.

REFERENCES:
patent: 3632681 (1972-01-01), Pope
patent: 3686365 (1972-08-01), Sequeira
patent: 3700748 (1972-10-01), Winkler
patent: 3763044 (1973-10-01), Anderson
patent: 3766300 (1973-10-01), De La Mare
patent: 3772196 (1973-11-01), St. Clair et al.
patent: 3823203 (1974-07-01), De La Mare
patent: 3985830 (1976-10-01), Fetters
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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