Production of polyethylene for blow molding
US6407192B1 · kind B1 · utility
3Cited by
4References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing high density polyethylene suitable for blow molding and having high environmental stress cracking resistance and rigidity copolymerizing ethylene and an alpha-olefinic comonomer comprising from 3 to 10 carbon atoms, in the presence of a chromium-based catalyst, having an alumina-containing support, and an organoboron compound, wherein the atomic ratio of boron in the organoboron compound to the chromium in the chromium-based catalyst is from around 0.2 to around 0.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.