Lubricating compositions
US4639324A · kind A · utility
6Cited by
9References
72Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricating oils having improved antioxidant and anti-wear properties are obtained by adding a minor amount of a reaction product made by reacting at least one aliphatic olefinically unsaturated hydrocarbon containing from about 8 to 36 carbon atoms (preferably an .alpha.-olefin) concurrently with sulfur and at least one fatty acid ester (preferably an oil such as cottonseed oil) to obtain a reaction intermediate and reacting this intermediate with additional sulfur and a dimer of cyclopentadiene or lower C.sub.1-4 alkyl substituted cyclopentadiene dimers, such as methylcyclopentadiene dimer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.