Process for preparing alkyl (meth)acrylates using an...

Details Process for preparing alkyl (meth)acrylates using an... Process for preparing alkyl (meth)acrylates using an...

C - Chemistry, Metallurgy

07

C

C07C 67/10 (2006.01) C07C 69/54 (2006.01)

Patent

CA 2670421

The present invention relates to a process for preparing alkyl (meth)-acrylates, characterized in that the process comprises a step in which a cyanohydrin is hydrolysed by means of an enzyme whose residual activity after the reaction of methacrylonitrile in the presence of 20 mM cyanide ions at 20°C after 30 minutes is at least 90% of the residual activity of the enzyme which has been used in the absence of cyanide ions under otherwise identical conditions.

La présente invention concerne un procédé de fabrication de (méth)acrylates d'alkyle, caractérisé en ce que le procédé comprend une étape lors de laquelle une cyanhydrine est hydrolysée avec une enzyme, son activité résiduelle après la réaction de méthacrylnitrile en présence de 20 nM d'ions cyanure à 20 °C après 30 min représentant au moins 90 % de l'activité résiduelle de l'enzyme, ladite réaction étant autrement réalisée dans les mêmes conditions en l'absence d'ions cyanure.

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