Low zinc lubricant composition
US11674106B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2018 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Jul 17, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosed technology relates to lubricants for compression ignition internal combustion engines, particularly those demonstrating at least one of improved seals performance, reduced deposit formation, and excellent durability. The present invention provides a low zinc lubricating composition comprising (a) an oil of lubricating viscosity, (b) a borated dispersant, and (c) a metal-free organo-phosphorus anti-wear additive, wherein the lubricating composition is substantially free of a metal containing sulfur coupled alkyl phenol compound. Further, the low zinc lubricating composition contains zinc in an amount less than 600 ppm by weight of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.