Olefin polymerization process
US7671151B2 · kind B2 · utility
2Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2008 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | May 21, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for making polyethylene having an uncommon but valuable balance of broad molecular weight distribution and a low level of long-chain branching is disclosed. The process comprises polymerizing ethylene in a single reactor in the presence of an α-olefin and a catalyst comprising an activator and a supported dialkylsilyl-bridged bis(indeno[1,2-b]indolyl)zirconium complex. The polyethylene, which has an Mw/Mn greater than 10 and a viscosity enhancement factor (VEF) of less than 2.5, is valuable for making blown films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.