Monobidentate, bis-bidentate, and tetrabidentate guanidine Group IV transition metal olefin copolymerization catalysts
US12221507B2 · kind B2 · utility
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Key dates
| Filing date | May 28, 2020 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Processes for polymerizing polyolefins include contacting ethylene and optionally one or more (C3-C12)α-olefin in the presence of a catalyst system, wherein the catalyst system comprises a metal-ligand complex having a structure according to formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.