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US 2006/0155081 A1Published application
Chromium-based catalysts in mineral oil for production of polyethylene
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsRobert Jorgensen, Karen Breetz, Jose Cevallos-Candau, Dale Wright, Thomas Spriggs
Life of this patent
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Abstract
A process for polymerizing polyethylene with chromium-based catalysts wherein one or more supported chromium-based catalysts is mixed with mineral oil to form a slurry and the slurry is then introduced into a polymerization reactor, especially a gas-phase polymerization reactor.
Claims8
A process for making polyethylene, the process comprising the steps of:
- A) mixing (i) at least one chromium-based catalyst on a silica support with (ii) mineral oil having a viscosity of at least 40 cP at 40° C. to form a slurry;
- and
- B) introducing the slurry into a polyethylene polymerization reactor.
Dependencies are inferred from the claim text.