C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/13
C10M 1/10 (1980.01) C10M 3/02 (1980.01)
Patent
CA 1107271
ABSTRACT OF THE DISCLOSURE An improved lubricating oil composition comprising a major amount by weight of oil of lubricating viscosity; a minor amount by weight of solid particles effective to improve the lubricating properties of the composition; and a minor amount by weight of at least one of certain specific polymers has been found to provide improved inhibition of sludge and varnish formation in use. The polymers useful in the present composition comprise (1) a polymer, for example, an ethylene, propylene and 1,4-hexadiene terepolymer, with an dialkylaminoalkyl methacrylate grafted therein; (2) an interpolymer prepared from a long chain n alkyl-methacrylate and a dialkylaminoalkylmethacrylate or a N (alkanone) acrylamide; or (3) mixtures thereof.
316162
Dejovine James M.
Devries Donald L.
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
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