Sulfur-bridged phenolic antioxidants
US4946610A · kind A · utility
11Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Aug 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid, sulfur-bridged, hindered phenol antioxidant composition is prepared by reacting a mixture of hindered phenols with a sulfur chloride in the presence of a polar modifier. The composition is an effective antioxidant in lubricating oils without causing excessive copper corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.