Pre-polymerized catalyst components for the polymerization of olefins
US10351641B2 · kind B2 · utility
3Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Jun 10, 2014 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Dec 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present technology relates to a pre-polymerized catalyst component for the polymerization of olefins, characterized by a non-stereospecific solid catalyst component comprising Ti, Mg and a halogen and an amount of a (co)polymer of an alpha-olefin CH2═CHR1, where R1 is a C1-C12 hydrocarbon group ranging from 0.1 to 500 g per g of said solid catalyst component. In some embodiments, the (co)polymer is characterized by an isotacticity, expressed in terms isotactic pentads, of higher than 60 molar % and an intrinsic viscosity, measured in tetraline at 135° C., of at least 1.0 dL/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.