Dispersant-antioxidant multifunctional viscosity index improver

Details Dispersant-antioxidant multifunctional viscosity index improver Dispersant-antioxidant multifunctional viscosity index improver

1990-04-23

1991-06-04

Willis, Prince E.

Compositions

Electrolytes for electrical devices

525131, 5253317, C10M14904

Patent

active

050211773

ABSTRACT:
Dispersant viscosity index improvers for lubricating oils contain an EPR or EPT polymer onto which has been graft polymerized with isocyanatoethyl methacrylate and thereafter reacted with N-phenyl-p-phenylene diamine.

REFERENCES:
patent: 3687905 (1972-08-01), Dorer
patent: 4051050 (1977-09-01), Elliott et al.
patent: 4292185 (1981-09-01), Bollinger
patent: 4316967 (1982-02-01), Hergenrother et al.
patent: 4557847 (1985-12-01), Gutierrez et al.
patent: 4764304 (1988-08-01), Kapuscinski et al.

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