Dispersant reaction product with antioxidant capability
US8048831B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Aug 16, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel crankcase dispersant reaction product having fused therein an antioxidant moiety whereby the dispersant reaction product can function as an antioxidant while retaining at least two structural domains, one being a polar domain for association with sludge and a hydrocarbyl domain for oil solubility, so that the dispersant can function as a chemical agent to suspend sludge and prevent agglomeration of sludge precursors and soot so the latter can be readily removed from the system, such as by filtering, instead of being deleteriously deposited on internal engine components, as well as lubricant compositions incorporating such novel dispersant and, for instance, engines lubricated with such lubricant compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.