25-08-2016 дата публикации
Номер: KR1020160101389A
Принадлежит:
The present invention relates to a continuous production method of butyl (meth)acrylate, in which methyl (meth)acrylate and butanol undergo an ester exchange reaction in the presence of an ester exchange catalyst and a polymerization inhibitor, and gasified unreacted methyl(meth)acrylate and produced methanol, through the ester exchange reaction, are removed as an azeotropic mixture from an azeotropic tower. In the continuous production method of butyl (meth)acrylate, the reflux ratio is controlled such that temperatures inside the azeotropic tower, converted to temperatures at atmospheric pressure, remain in the following ranges: 64-65°C at the uppermost part, 65-89°C at the middle part, and 89-102°C at the bottom part, and the azeotropic mixture contains 10 ppm or less of butanol. The amount of butanol contained in the azeotropic mixture to be removed from the azeotropic tower is minimized, and thus the continuous production method of butyl (meth)acrylate of the present invention has ...
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