Gas engine lubricating oil composition
US10266785B2 · kind B2 · utility
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Key dates
| Filing date | Dec 5, 2014 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Dec 5, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A gas engine lubricating oil composition comprises an oil of lubricating viscosity including at least 90 mass % saturates and no more than 0.03 mass % to sulfur, a metal hydroxybenzoate detergent additive, a dispersant additive, and an aminic or phenolic antioxidant additive, and has a boron concentration, of zero or less than 90 ppm by mass, where boron, if present, is provided at least in part by a boron-containing dispersant additive. The composition exhibits improved lead corrosion properties and no adverse anti-wear properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.