Basic ashless additives and lubricating compositions containing same
US11859148B2 · kind B2 · utility
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27References
23Claims
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Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Aug 27, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosed technology relates to a lubricating composition comprising an oil of lubricating viscosity and an ashless basic amine additive selected from a N-aralkyl α-carbonyl functional amine. The basic amine additives used in the lubricating oils of the disclosed technology impart basicity measured as total base number (TBN) without adding sulfated ash. Lubricating oils containing the basic amine additives of the disclosed technology simultaneously achieve seal compatibility, deposit, and corrosion control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.