Polymer mitigation
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United States of America Patent
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Issued Date -
Oct 20, 2011
app pub date -
Apr 6, 2011
filing date -
Apr 20, 2010
priority date (Note) -
Abandoned
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Abstract
Ethylene is selectively oligomerized in a continuously stirred tank reactor (CSTR) that is preferably operated in an isothermal manner using a chromium catalyst. The undesired formation of by-product polyethylene is mitigated by contacting the ethylene with hydrogen prior to adding the ethylene to the reactor and feeding the ethylene and hydrogen via a common feed port.
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