Polyethylene thick film and process for preparing polyethylene
US7816478B2 · kind B2 · utility
0Cited by
16References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2008 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Feb 3, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thick film and process to prepare polyethylene useful for the film are disclosed. Ethylene is polymerized in two reaction zones with a C6-C10 α-olefin in the presence of a catalyst system comprising an activator, a supported bridged zirconium complex, and a supported non-bridged zirconium complex. The process yields medium density to linear low density polyethylene having a melt index from 0.20 to 1.0 dg/min. Thick films from the polyethylene have a superior combination of high impact strength and high modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.