Polymeric lubricant additive designed to enhance anti-wear, anti

Details Polymeric lubricant additive designed to enhance anti-wear, anti Polymeric lubricant additive designed to enhance anti-wear, anti

1994-11-29

1995-12-05

McAvoy, Ellen M.

Compositions

Electrolytes for electrical devices

5253336, 525349, C10M15102

Patent

active

054726271

ABSTRACT:
A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene-(ethylenebutylene)-styrene where hydrogenation has removed aliphatic unsaturation. Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.

REFERENCES:
patent: 4160739 (1979-07-01), Stambaugh et al.
patent: 4863623 (1989-09-01), Nalesnik
patent: 5013469 (1991-05-01), DeRosa et al.

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