Activated spray-dried Ziegler-Natta catalyst system
US11325927B2 · kind B2 · utility
1Cited by
26References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 3, 2018 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Dec 8, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/6555
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An activated, titanium-based, spray-dried Ziegler-Natta catalyst system containing a titanium-based Ziegler-Natta catalyst, a carrier material, and an activator mixture comprising an effective amount of an activator mixture comprising triethylaluminum and diethylaluminum chloride for producing a substantially uniform comonomer composition distribution. Also, polyolefins; methods of making and using same; and articles containing same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.