Polysulfurized olefin compositions, their preparation and use as additives in lubricants
US5133889A · kind A · utility
4Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/247
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described are polysulfurized olefin compositions defined as being prepared by reaction of sulfur monochloride and/or dichloride with at least one monoolefin with 6 to 12 carbon atoms to form an addition product (or "adduct"), then by reaction of said adduct with a mercaptate or mercaptate-polysulfide of an alkaline metal or ammonium, itself obtained, for example, by reaction of a mercaptan with an alkaline hydroxide or with ammonia then, if need be, with sulfur, preferably in an alcoholic medium. These polysulfurized olefin compositions can be used as extreme-pressure additives in gearing oils or in oils for use in metal-working.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.