Process for the pretreatment of light olefin fractions
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United States of America Patent
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May 28, 1985
Grant Date -
N/A
app pub date -
Nov 14, 1983
filing date -
Nov 12, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for the pretreatment of a light olefin fraction, or of a mixture of such fractions, for the purpose of selectively removing the isobutene and butadiene present. In accordance with the invention, the olefin fraction is contacted with boron trifluoride in the gas phase, under such conditions and for such a length of time that the isobutene and the butadiene will polymerize selectively, and the boron trifluoride and the isobutene and butadiene polymers obtained are then conventionally separated from the effluent.
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