Process for preparing a bimodal polyethylene product in a single loop reactor
US8546496B2 · kind B2 · utility
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2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Dec 30, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for preparing a bimodal polyethylene product in a single loop reactor, comprising polymerizing ethylene monomer and optionally one or more olefin co-monomers in the presence of a single heterogeneous polymerization catalyst consisting of a metallocene-alumoxane catalyst immobilized on a porous support wherein said metallocene comprises only one transition metal. Said polymerization catalyst consists of two physically different fractions of support particles onto which said metallocene-alumoxane catalyst is immobilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.