Polymer composition viscosity index improver additive and lubric

Details Polymer composition viscosity index improver additive and lubric Polymer composition viscosity index improver additive and lubric

1978-05-17

1980-03-18

Shine, W. J.

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

Component of indefinite molecular weight greater than 150

585 12, 585 13, C10M 116

Patent

active

041940571

ABSTRACT:
A viscosity index improver additive composition contains, as one component, a vinyl aromatic/conjugated diene polymer of specific structure and composition and, as a second component an ethylene/C.sub.3 to C.sub.18 alpha olefin copolymer of specific composition and viscosity. Preferably the composition also contains a polybutene of defined molecular weight.

REFERENCES:
patent: 3697429 (1972-10-01), Engel et al.
patent: 3772196 (1973-11-01), St. Clair et al.
patent: 3775329 (1973-11-01), Eckert

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