Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers
US7847039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2009 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jun 1, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are a transition metal complex having a high catalytic activity for the preparation of an ethylene homopolymer or a copolymer of ethylene and α-olefin and a catalyst composition comprising the same. More specifically, there are provided a transition metal complex having, around a group IV transition metal, a cyclopentadiene derivative and at least one aryl oxide ligand with a heterocyclic aryl derivative substituted at the ortho-position thereof, with no crosslinkage between the ligands, a catalyst composition comprising the transition metal complex and an organoaluminum compound or boron compound as cocatalyst, and a method for the preparation of high molecular weight ethylene homopolymers or copolymers of ethylene and α-olefin using the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.