Titanium (II) or Zirconium (II) complexes and addition polymerization catalysts therefrom
US5556928A · kind A · utility
86Cited by
1References
19Claims
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Key dates
| Filing date | Aug 15, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers using novel catalyst compositions comprising 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, and an activating cocatalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.