Method for producing very-high or ultra-high molecular weight polyethylene
US8637618B2 · kind B2 · utility
3Cited by
3References
61Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2500/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The field of the invention relates generally to a method for preparing very-high or ultra-high molecular weight polyethylene. More particularly, the present invention related to a method of preparing very-high or ultra-high molecular weight polyethylene using a supported catalyst comprising a support, an activator and a metal-ligand complex, as well as the catalyst itself. The present invention additionally relates to a method of using a supported catalyst comprising a support, an activator and co-supported metal-ligand complexes to obtain a bi-modal molecular weight distribution of polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.