Preparation of metallocenes
US5302733A · kind A · utility
15Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Mar 30, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F17/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A racemic mixture of a chiral, silicon bridged transition metal metallocene, which is substantially free of meso isomer, is precipitated directly from a reaction mixture as it is formed by reacting an organic solvent solution of an alkali metal salt of a silicon bridged ligand with a transition metal tetrahalide-ether complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.