Hydroxy aromatic Mannich base condensation products and the use thereof as soot dispersants in lubricating oil compositions
US6855674B2 · kind B2 · utility
13Cited by
55References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Low molecular weight oxazine ring-containing Mannich base condensates of hydroxy aromatic compounds, aldehyde; and amine. Such compounds are useful as soot dispersants in lubricating oils when used alone, or in combination with high molecular weight dispersants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.