Overbased detergents for lubricating oil applications
US8618029B2 · kind B2 · utility
0Cited by
6References
37Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 22, 2003 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jul 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides overbased detergents as lubricating oil additives effective for the lubrication of mechanical components in land and marine engines, such as, for example, hydraulic systems, transmissions, two-stroke and four-stroke vehicular engines, trunk piston and two-stroke crosshead marine engines. These overbased detergents lead to improved detergency and thermal stability performances versus high overbased sulfonates. Moreover, they are more compatible with commercial phenates than conventional sulfonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.