Sulfurized compositions
US4344854A · kind A · utility
54Cited by
1References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1979 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Jul 16, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sulfurized compositions are prepared by the reaction, under superatmospheric pressure, of olefinic compounds with a mixture of sulfur and hydrogen sulfide, followed by removal of low boiling materials including unreacted olefin, mercaptan and monosulfide. An optional final step is removal of active sulfur; for example, by treatment with an alkali metal sulfide. The resulting sulfurized compositions are useful as lubricant additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.