PROCESS FOR MAKING ETHYLENE HOMOPOLYMERS
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United States of America Patent
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app pub date -
May 16, 2012
filing date -
Nov 21, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for making an ethylene homopolymer in the presence of an oxide-supported chromium catalyst is disclosed. A small amount of an α-olefin contacted with the catalyst before polymerizing ethylene or introduced into an ethylene homopolymerization unexpectedly boosts process productivity. When used at part per million levels, the α-olefin improves productivity while maintaining desirable polymer properties. The invention is particularly valuable for making HDPE resins useful for blow molding applications.
First Claim
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | B2 | US8202952 | Nov 21, 2008 |
International Classification(s)
- 2012 Application Filing Year
- C08F Class
- 1687 Applications Filed
- 1416 Patents Issued To-Date
- 83.94 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08F Class
- 0 % this patent is cited more than
- 13 Age