Particulate metallocene-alumoxane catalyst
US9115229B2 · kind B2 · utility
9Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Mar 27, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.