Catalyst composition and polymerization process using mixture of silane electron donors
US7521512B2 · kind B2 · utility
1Cited by
49References
14Claims
0Family size
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Key dates
| Filing date | May 27, 2004 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst composition for the polymerization of olefins comprising the combination of one or more Ziegler-Natta procatalysts comprising one or more transition metal compounds; one or more aluminum containing cocatalysts; and a mixture comprising two or more selectivity control agents (SCA's), corresponding to the formula: (CH3O)nSi(OR)4-n, wherein R, independently each occurrence, is C2-12 alkyl, C3-12 cycloalkyl, C6-18 aryl or (poly)alkyl-substituted aryl, or C7-18 poly(aryl)-substituted alkyl, and n is an integer from zero to 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.