Titanium (II) or zirconium (II) complexes and addition polymerization catalysts therefrom
US5624878A · kind A · utility
66Cited by
7References
15Claims
0Family size
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Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel catalytic derivatives of 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 and an activating cocatalyst are useful as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.