Engine oil having dithiocarbamate and aldehyde/epoxide for improved seal performance, sludge and deposit performance
US6121211A · kind A · utility
8Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a lubricating composition having a major amount of an oil of lubrication viscosity and a minor amount of PA1 (A) at least one thiocarbamate wherein the improvement comprises adding to said thiocarbamate PA1 (B) a sludge preventing and seal protecting amount of at least one aldehyde or epoxide or mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.