Process to separate butadiene dimers
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United States of America Patent
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Jun 17, 2008
Grant Date -
May 26, 2005
app pub date -
Dec 19, 2002
filing date -
Dec 21, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process to separate butadiene dimers from a mixture comprising butadiene dimers and alkyl-3-pentenoate and/or isomers thereof wherein the butadiene dimers are separated from said mixture by distillation in the presence of an alcohol and in that the distillation is effected at a bottom temperature of between 80 and 200.degree. C. Examples of frequent occurring butadiene dimers are 4-vinylcyclohexene and 1,3,7-octatriene. Examples of the alcohol are monohydroxy aliphatic alcohols.
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