Multifunctional viscosity index improver additive and lubricatin

Details Multifunctional viscosity index improver additive and lubricatin Multifunctional viscosity index improver additive and lubricatin

1989-12-26

1990-11-27

Chaudhuri, Olik

Compositions

Electrolytes for electrical devices

252 51, C10M14700, C10M14902

Patent

active

049734130

ABSTRACT:
A polymeric lubricating oil additive containing pendant perfluoroaliphatic urethane units that behaves as a VI Improver and a fuel economy enhancer when added to lubricating oil compositions. The polymeric substrate may be a copolymer of 15-85 mole % ethylene and propylene or a terpolymer of 15-85 mole % ethylene, propylene, and 20-80 mole % of a non-conjugated diene or triene (C.sub.3 -C.sub.10) alpha olefin. The copolymer or terpolymer substrate has a molecular weight range of about 5,000 to about 500,000. A graft copolymer or terpolymer containing pendant isocyanate groups is prepared by reacting the ethylene propylene co- or terpolymer with an acrylating agent. Post-reacting the copolymer or terpolymer containing the pendant isocyanate group with a perfluoroaliphatic alcohol generates the additive.

REFERENCES:
patent: 4051050 (1977-09-01), Elliott et al.
patent: 4098710 (1978-07-01), Elliott et al.
patent: 4194984 (1980-03-01), Elliott et al.

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