Lubricating oil composition for outboard engines
US6642188B1 · kind B1 · utility
5Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jul 8, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/253
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.