One pot preparation of bimetallic catalysts for ethylene 1-olefin copolymerization
US6713425B2 · kind B2 · utility
3Cited by
140References
9Claims
0Family size
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Key dates
| Filing date | Jun 3, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process of forming a bimetallic catalyst composition comprising a cocatalyst (a trialkylaluminum compound) and a catalyst precursor. The precursor comprises at least two transition metals; a metallocene complex is a source of one of said two transition metals. The precursor is produced in a single-pot process by contacting a porous carrier, in sequence, with a dialkylmagnesium compound, an aliphatic alcohol, a non-metallocene transition metal compound, a contact product of a metallocene complex and a trialkyl-aluminum compound, and methylalumoxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.