Dispersant and detergent systems for improved motor oil performance
US11926804B1 · kind B1 · utility
0Cited by
109References
18Claims
0Family size
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Key dates
| Filing date | Jan 31, 2023 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Jan 31, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure relates to passenger car motor oil lubricating oil compositions having select dispersant and detergent systems to improve at least one of deposits, sludge, oxidization, and wear when using a blend of API Group II base oils with one or more API Group III and/or API Group IV base oils. The dispersant systems herein includes select amounts of boron, nitrogen, and total base number contributions that surprisingly achieve performance even when including higher amounts of the API Group II base oils in the lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.