High viscosity overbased sulfonate detergent and marine cylinder oils containing same
US6444625B1 · kind B1 · utility
3Cited by
17References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An overbased calcium sulfonate detergent having a high viscosity is characterized by forming a clear solution in lubricating oil, having a TBN of about 400 or more, and having a viscosity of at least 180 mm2/s at 100° C. The high viscosity of the detergent allows for reduction in expensive high viscosity oil components of marine cylinder oils while maintaining selected TBN and viscosity parameters in the finished oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.