Arkema France

Givaudan S.a.

Benoit Riflade

Marc Esch

Serge Tretjak

Coralie Graire

Reinhard Linemann

Yves Cabon

Andre Levray

Vladica Bocokic

Fanny Dubut

Patrice Defer

Sandra Maget

André Levray

This invention relates to a process for the continuous production of a (meth)acrylic ester by transesterification reaction between a C1-C4 light alkyl (meth)acrylate, with a heavy alcohol in the presence of a catalyst, characterised in that the flows feeding the reactor are introduced through a static mixer placed on a recirculation loop of the reactor. The use of a static mixer improves the selectivity of the reaction and consequently the overall productivity of (meth)acrylic ester synthesis process.

Process for producing (meth)acrylic esters

The invention relates to the use of 2,6,-di-tert-butyl-4-methylphenol at a moiety of 25 to 200 ppm for stabilizing N,N-dimethylaminoethyl acrylate in respect of discoloring effects. The invention also relates to an N,N-dimethylaminoethyl acrylate stabilized in said manner and to a method for producing the same.

N,N-dimethylaminoethyl acrylate composition stabilized in respect of discoloring effects

The invention relates to a method for producing a (meth)acrylic ester with improved productivity, by transesterfication of a light alkyl (meth)acrylate with a heavy alcohol. The method of the invention includes the recycling of noble products recovered after the thermal treatment of heavy fractions generated during the synthesis, said thermal treatment being carried out in the presence of a dialkyl phthalate, the alkyl chain of which corresponds to that of the light alkyl (meth)acrylate. The invention applies to the production of N,N-dimethyaminoethyl acrylate from ethyl acrylate.

Reclamation of noble products in a method for producing (meth)acrylic ester

A process for the synthesis of acrylic acid oligomer represented by formula (I):  wherein the process comprises the step of heating acrylic acid at a temperature from 50&#xb0; C. to 200&#xb0; C. in the presence of a catalyst, water and at least one polymerization inhibitor. Formula (I) where n=0 is acrylic acid, the precursor for preparing the acrylic acid oligomer.

Process for the synthesis of acrylic acid oligomers

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Bazas, France

Benoit Riflade