Additives for improving the dispersing properties of lubricating oil
US3936480A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1972 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Nov 16, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
New lubricating oil additives are provided comprising the reaction product of a hydroxy compound, such as an alcohol or hydroxyaromatic compound, with an aliphatic chain substituted-carboxylic anhydride, acid, chloride, or ester, which aliphatic chain substituent is substantially saturated and contains at least about 30 carbon atoms, said reaction product being neutralized with an ashless basic compound, so that the final product or additive contains at least about 0.9%, up to about 2.5%, by weight of nitrogen. Lubricating oils, fuel oils, and carburants containing the new additives have excellent detergent, dispersing and anti-rust properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.