Lubricating composition and method of lubricating an internal combustion engine
US12139686B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jun 5, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Jun 5, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/252
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosed technology provides a lubricating composition and a method of lubricating an internal combustion engine where the lubricating composition contains an oil of lubricating viscosity, one or more metal-containing, sulfur-free, alkyl-phenol based detergents, an alkaline earth metal sulfonate detergent, a polyisobutenyl succinimide dispersant, and a dispersant viscosity modifier having a number average molecular weight of at least 20,000.The lubricating composition of the present invention can be formulated to have lower HTHS viscosity, and reduced phosphorous content, while providing protection against adhesive wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.