Polymerization catalysts
US10982024B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Nov 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Embodiments of the present disclosure directed towards polymerization catalysts having improved ethylene enchainment and/or improved catalyst productivity. As an example, the present disclosure provides a polymerization catalyst of Formula (I), wherein each of R1 to R12 is independently a C1 to C20 alkyl, aryl or aralkyl group, or a hydrogen, wherein at least one of R4 to R7 is not a hydrogen, wherein M is a Group 4 metal, and wherein, each X is independently a halide, C1 to C20 alkyl, aralkyl or hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.