Process for the improved production of (meth)acrylic acid esters of polyhydric alcohols (I)
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United States of America Patent
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Sep 27, 1994
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app pub date -
Jun 24, 1991
filing date -
Dec 24, 1988
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Abstract
The invention relates to a process for the production of (meth)acrylic acid esters of polyhydric alcohols by reaction of the reactants in the presence of acidic esterification catalysts with addition of .alpha.-substituted phenolic compounds, more particularly di-tert.-butyl hydroquinone, as polymerization inhibitors. The new process is characterized in that the reaction mixtures used are liquid at room temperature and are at least substantially free from solvents and/or azeotropic entraining agents and in that the water of condensation formed is removed from the gas phase of the reaction zone.
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