Multi-stage olefin isomerization
US5292985A · kind A · utility
23Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1991 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A multi-stage process for isomerizing olefin compounds to the corresponding product olefin compounds is provided. The isomerization catalyst comprises an oxygen treated mixture of an alkali metal on a calcined support. The multi-stage process is particularly useful for isomerizing 5-vinyl-2-norbornene to 5-ethylidiene-2-norbornene. The catalyst is very active and highly selective and resistent to catalyst poisons. The process contacts the catalyst with an isomerizable olefin in at least two reaction stages to yield the corresponding product olefin compound. The reaction stages differ in temperature, catalyst activity or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.