Titanated chromium-based catalysts to produce polyethylene
US6489428B1 · kind B1 · utility
53Cited by
2References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 14, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Feb 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a supported chromium-based catalyst titanated under specific conditions and used for the homopolymerisation or the copolymerisation of ethylene. The polyethylene obtained with this catalyst has high shear resirance and environmental stress crack resistance, and can be used for manufacturing films with improved tear properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.