Lubricating oil composition having an ashless wear inhibitor

Details Lubricating oil composition having an ashless wear inhibitor Lubricating oil composition having an ashless wear inhibitor

1993-09-08

1999-12-14

Medley, Margaret

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic compound containing boron

508375, C10M13312

Patent

active

060017791

ABSTRACT:
A lubricating oil composition has an oil of lubricating viscosity, plus minor portions of alkylated aminophenol and zinc dithiophosphate. Preferably, about 75 mol % of the alkyl groups of the zinc dithiophosphate are derived from primary alcohols. The alkylated aminophenol can be a borated 4-alkyl-2-aminophenol having, as its alkyl group, a polypropylene tetramer having from 18 to 30 carbon atoms.

REFERENCES:
patent: 4320020 (1982-03-01), Lange
patent: 4320021 (1982-03-01), Lange
patent: 4379065 (1983-04-01), Lange
patent: 4386939 (1983-06-01), Lange
patent: 4466895 (1984-08-01), Schroeck

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