Fluxional catalysts and related ligands containing bulky substituents
US6479424B1 · kind B1 · utility
11Cited by
9References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A ligand useful to form a metallocene olefin polymerization catalyst comprises: wherein at least R3 and R4 are substituents having at least a bulk of a t-butyl group and, optionally, wherein R1 or R2 may be a bulky substituent group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.