Procatalyst composition with multiple internal donor having silyl ester and method
US8222357B2 · kind B2 · utility
11Cited by
23References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 23, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Dec 17, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a procatalyst composition containing a multiple internal electron donor with at least two components, one of which is a silyl ester. The other component of the mixed internal electron donor may be an electron donor component. The electron donor component may be an aromatic acid ester, a di-ether, and combinations thereof. Catalyst compositions containing the multiple internal electron donor exhibit improved hydrogen response during olefin polymerization and produce propylene-based polymers with broad molecular weight distribution, high flexural modulus, and high melt flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.