Supported polymerisation catalysts
US7678726B2 · kind B2 · utility
1Cited by
2References
19Claims
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Key dates
| Filing date | Aug 4, 2004 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A supported polymerization catalyst system is prepared by a method comprising the following steps: (i) addition of a cocatalyst to a porous support, (ii) mixing a polymerisation catalyst with a polymerisable monomer, and (iii) contacting together the components resulting from steps (i) and (ii). The porous support is preferably silica and the polymerisation catalyst is preferably a metallocene. The polymerisable monomer is typically 1-hexene and the supported catalyst system provides advantages a slowly decaying activity profile particularly when operating in the gas phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.