High propylene content EP having low glass transition temperatures
US12305028B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Jul 17, 2020 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Apr 24, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2467/006
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides methods for producing an olefin polymer by contacting a C3-C40 olefin and ethylene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted tetrahydro-s-indacenyl group and obtaining a C3-C40 olefin-ethylene copolymer typically comprising from 0.5 to 43 wt % ethylene, and from 99.5 to 57 wt % C3 to C40 comonomer wherein the Tg of the terpolymer is from 0 to −60° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.