Particulate metallocene-alumoxane catalyst
US8722567B2 · kind B2 · utility
9Cited by
1References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2013 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Aug 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- 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.