Process for the improved production of (meth) acrylic acid...

Details Process for the improved production of (meth) acrylic acid... Process for the improved production of (meth) acrylic acid...

C - Chemistry, Metallurgy

07

C

260/481.9

C07C 67/08 (2006.01) C07C 69/54 (2006.01) C08G 65/332 (2006.01)

Patent

CA 2006434

ABSTRACT OF THE DISCLOSURE A process for the production of (meth)acrylic acid esters of polyhydric alcohols by reaction thereof with acrylic acid and/or methacrylic acid in the presence of acidic esterification catalysts with addition of polymerization inhibitors to the reaction mixture. Unsubstituted phenolic compounds are used as inhibitors, and the esterification reaction is carried out with addition of active carbon to the reaction mixture. The preferred inhibitor is hydroquinone. In addition, the esterification reaction is preferably carried out in the absence of liquid solvents and/or azeotropic entraining agent 5.

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