Method for producing (meth)acrylic acid and (meth)acrylic esters
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United States of America Patent
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Jul 19, 2011
Grant Date -
Mar 26, 2009
app pub date -
Sep 26, 2007
filing date -
Sep 26, 2007
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Abstract
There is provided a method for rectifying a vinyl compound liquor. The method includes the steps of a) providing a rectification column operated at a temperature and pressure and b) feeding the vinyl compound liquor to be rectified into the rectification column, wherein the pressure of the rectification column and the temperature of the fed vinyl compound liquor are controlled, such that the temperature of the fed vinyl compound liquor ranges from its bubble point at the pressure of the rectification column to 10° C. lower than the bubble point.
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