Chlorinated promoters for vanadium-based polymerization catalysts
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United States of America Patent
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Apr 7, 2009
Grant Date -
Dec 15, 2005
app pub date -
May 26, 2005
filing date -
May 27, 2004
priority date (Note) -
Expired
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Abstract
Promoters are described for vanadium-based catalysts used in the (co)polymerization of olefins and, in particular, in the production of ethylene/propylene (EPR) or ethylene/propylene/diene (EPDM) elastomeric copolymers. The promoters of the present invention belong to the group of compounds having general formula I:
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