Solid catalytic component containing zirconium and cycloalkadienyl groups, process for producing it and process for the polymerization of olefins in its presence
US5739226A · kind A · utility
5Cited by
11References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Oct 18, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The solid catalytic component according to the invention is obtained by PA1 a) treatment of a catalytic component support with ZrCl.sub.4 or HfCl.sub.4 in the gas phase, followed by a PA1 b) treatment with a solution or suspension of a compound capable of grafting a group containing the cycloalkadienyl skeleton to the Zr or Hf contained in the support. Polymerization of olefins in the presence of such a catalytic component results in polymers with low polydispersities, which polymers are obtained with high productivities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.