Arkema France

Pierre-Emmanuel Conoir

Serge Tretjak

Nathalie Hess

Christophe Oses

Rose Aguiar

The present invention relates to the production of light (meth)acrylic esters by direct esterification of acrylic acid by methanol or ethanol. The invention more particularly relates to a process for the recovery/purification of C1-C2 alkyl acrylate comprising the azeotropic distillation of the crude reaction mixture using a distillation column comprising a sidestream drawing off of a fraction rich in alkyl alkoxypropionate byproduct, the boiling point of which is close to that of acrylic acid, and therefore problematic in the purification process.

Method for purifying light acrylates

The subject of the invention is a process for recovering/purifying a C-C(meth)acrylic ester from a crude reaction mixture comprising said ester, the process being carried out using a purification system comprising a divided wall column and a decanter, resulting in a simplification of the process and in a high productivity of the ester produced corresponding to the standards in terms of purity. The invention also relates to a process for producing C-C(meth)acrylic ester comprising this recovery/purification process.

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Saint Avold, France

Pierre-Emmanuel Conoir