Amino phosphine
US8252956B2 · kind B2 · utility
37Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Jul 30, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.