Polymeric additives to enhance anti-wear, anti-oxidancy, and dis

Details Polymeric additives to enhance anti-wear, anti-oxidancy, and dis Polymeric additives to enhance anti-wear, anti-oxidancy, and dis

1990-12-21

1992-12-01

McAvoy, Ellen

Compositions

Electrolytes for electrical devices

525256, 525279, 525280, 525281, 525301, 5253015, 5253317, C10M15102

Patent

active

051678454

ABSTRACT:
A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersnacy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolyer of ethylene propylene and a third monomer onto which an ethylenically unsaturated carboxylic acid or acid anhydride has been grafted. The polymer is imidized with aminoheterocyclics and hydroxylalkylated using an aldehyde or ketone an alkylation; than alkylated using mercaptoheterocyclics.

REFERENCES:
patent: 4219432 (1980-08-01), Girgenti et al.
patent: 4517104 (1985-05-01), Bloch et al.
patent: 4780228 (1988-10-01), Gardiner et al.

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