Lubricating oil composition containing a dispersing- varnish...

Details Lubricating oil composition containing a dispersing- varnish... Lubricating oil composition containing a dispersing- varnish...

C - Chemistry, Metallurgy

10

M

253/56

C10M 133/52 (2006.01)

Patent

CA 1090320

ABSTRACT OF THE DISCLOSURE The combination of (a) an oil-soluble oxazoline reaction product having a (?n) of from about 1,000 to 3,300, e.g., the reaction product of polybutenyl succinic anhydride with tris(hydroxymethylj aminomethane and (b) an oil-soluble acylated nitrogen material having a (?n) of from about 1,300 to 8,000, e.g. polybutenyl succinic anhydride reacted with a poly- ethylene polyamine, which nitrogen material can be borated, if desired, are surprisingly useful as combined additives for lubricating oils to increase the dispersancy and varnish inhibition properties of said oil when one part per weight of said oxazoline reaction product is combined with from 0.2 to 4, preferably 1 to 3, parts by weight of said acylated nitrogen material.

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