Process for the preparation of ethylene polymers
US9938359B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Jul 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the preparation of ethylene polymers comprising polymerizing ethylene, optionally with one or more α-olefin comonomers, in the presence of:(i) a solid catalyst component comprising titanium, magnesium, halogen and optionally an internal electron-donor compound,(ii) an aluminum alkyl compound, and(iii) an antistatic compound selected among the hydroxyesters with at least two free hydroxyl groups,wherein the weight ratio of aluminum alkyl compound to solid catalyst component is higher than 0.80 and the weight ratio of antistatic compound to aluminum alkyl compound is higher than 0.10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.