Inert particulate material passivation for single-site catalyst in EPDM production
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United States of America Patent
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Apr 10, 2001
Grant Date -
N/A
app pub date -
May 19, 1999
filing date -
May 19, 1999
priority date (Note) -
Expired
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Abstract
There is provided a process for the gas phase production of an ethylene-propylene or ethylene-propylene-diene rubber in the presence of a single site or single-site like catalyst (e.g., metallocene) catalyst system and an inert particulate material comprising pretreating the inert particulate material with trialkylaluminum (e.g., tri-isobutylaluminum) before commencing polymerization.
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