Preparation of supported silyl-capped silica-bound anion activators and associated catalysts
US8163854B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2010 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Oct 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65927
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the preparation of olefin polymerization catalysts that are the reaction products of the catalytic reaction of surface hydroxyls of a support with a trialkyl silane to afford hydrogen and the corresponding surface bound alkyl silyl ether and at the same time with a strong Lewis acid which support is converted to a silica bound anion that in a second step is fully converted by reaction with QM2 to the desired catalyst. Catalyst compositions are disclosed herein. Processes disclosed herein include processes for the polymerization of olefinically unsaturated monomers comprising contacting a plurality of one or more of the monomers with the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.