Supported metal alkyl compound and process for the polymerization of olefins in its presence
US7683146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Apr 23, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to pulverulent solids obtainable by reaction of a metal alkyl compound of a divalent or higher-valent metal and a finely divided support which on its surface bears functional groups which can form a chemical bond between the metal atom of the metal alkyl compound and the surface of the support, wherein the particles of the finely divided support have particle diameters of less than 1000 nm and less than 5% by weight of the metal alkyl compound is extractable in a single extraction of the pulverulent solid with 20 ml of heptane per gram of solid at 50° C. In addition, the invention relates to a process for preparing the pulverulent solids, a catalyst composition for the polymerization of olefins which comprises the pulverulent solids and polymerization processes using the catalyst composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.