Method for purifying 1,3-butadiene
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United States of America Patent
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Jun 13, 2017
Grant Date -
Jul 9, 2015
app pub date -
Nov 27, 2012
filing date -
Nov 28, 2011
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Abstract
It is an object of the present invention to provide a method for purifying 1,3-butadiene which can effectively remove an organic compound detrimental to anionic polymerization from 1,3-butadiene containing a polymerization inhibitor and suppress the formation of popcorn. The method includes: a water-washing step of washing 1,3-butadiene by using low-oxygen water having an oxygen concentration of less than 2 mg/L as wash water; and a polymerization inhibitor removing step of subsequently removing the polymerization inhibitor in 1,3-butadiene.
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