Modified VI improvers

Details Modified VI improvers Modified VI improvers

1990-04-02

1990-11-13

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

525351, 525301, C10M14500, C10M14900, C10M15100

Patent

active

049700090

ABSTRACT:
Lubricating oil composition comprising a major proportion of a mineral lubricating oil and, as viscosity index improver, a hydrogenated block copolymer or olefin copolymer functionalized by the presence of carboxyl groups attached to the polymer chain by a sulphonamide linkage.

REFERENCES:
patent: 3220985 (1965-11-01), Breslow
patent: 4083895 (1978-04-01), Nnadi et al.
patent: 4292185 (1981-09-01), Bollinger
patent: 4317738 (1982-03-01), Spence
patent: 4517104 (1985-05-01), Block et al.
patent: 4614765 (1986-09-01), Dean
patent: 4659491 (1987-04-01), Valkovich et al.
patent: 4783503 (1988-11-01), Gergen et al.
patent: 4797447 (1989-01-01), Gergen et al.

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