Process for selectively preparing organic trisulfides
US5442123A · kind A · utility
9Cited by
9References
14Claims
0Family size
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Key dates
| Filing date | Jan 13, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Jan 13, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a substantially pure organic trisulfide from mercaptan and sulfur (or high rank organopolysulfide) wherein the sulfur is reacted with mercaptan in the presence of a heterogeneous alumina-based catalyst, ammonium, alkali metal or alkaline earth metal modified silica-based catalyst, zinc-based catalyst or mixtures thereof, and recovering a product containing at least a major proportion of trisulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.