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1. (WO2018048781) TOTAL BASE NUMBER BOOSTERS FOR MARINE DIESEL ENGINE LUBRICATING COMPOSITIONS

Pub. No.:    WO/2018/048781    International Application No.:    PCT/US2017/050034
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Wed Sep 06 01:59:59 CEST 2017
IPC: C10M 163/00
Applicants: THE LUBRIZOL CORPORATION
Inventors: DELBRIDGE, Ewan, E.
GUO, Binbin
PUDELSKI, John, K.
DIFLAVIO, John-louis
Title: TOTAL BASE NUMBER BOOSTERS FOR MARINE DIESEL ENGINE LUBRICATING COMPOSITIONS
Abstract:
A lubricating composition includes an oil of lubricating viscosity and a low-ash additive system including a low molecular weight amine with a Total Base Number of at least 150, and an N-substituted hydrocarbyl-substituted succinimide dispersant. The low-ash additive system provides the lubricating composition with a significant boost in TBN without substantially lowering the flashpoint. The composition is particularly suited to use as a marine diesel engine lubricant.