Catalytic component and its use in olefin polymerization
US6433108B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the manufacture of a solid catalytic component for the polymerization or copolymerization of olefins, resulting in a polymer or copolymer with broadened molecular mass distribution. The process includes a first stage including bringing into contacta) a solid support including at its surface at least 5 hydroxyl groups per square nanometre (OH/nm2) andb) an organic magnesium derivative, and optionally, preferably,c) an aluminoxane,to obtain a first solid, and then a second stage including bringing the first solid and a chlorinating agent into contact to obtain a second solid and then, in a later stage, impregnation of the second solid with a transition metal derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.