Self-extinguishing catalyst composition with monocarboxylic acid ester internal door and propylene polymerization process
US7420021B2 · kind B2 · utility
7Cited by
49References
17Claims
0Family size
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Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Sep 6, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 98.0 to 99.9 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 2.0 to 0.1 mol percent of one or more alkoxysilane compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.