Titanium(II) or zirconium(II) complexes and addition polymerization catalysts therefrom
US5470993A · kind A · utility
118Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | May 12, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .pi.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure, also referred to as constrained geometry complexes; catalytic derivatives of such complexes; methods of preparation; and the use thereof as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.