Polymerization of ethylene
US6686434B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Complexes of certain transition metals with certain phosphorous-nitrogen bidentate ligands are part of all of catalyst systems for the polymerization of ethylene. Under certain polymerization conditions novel, highly branched, homopolyethylenes may be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.