Total base number boosters for marine diesel engine lubricating compositions
US11427780B2 · kind B2 · utility
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36References
21Claims
0Family size
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Key dates
| Filing date | Sep 5, 2017 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.