Verfahren zur Herstellung von (Meth)acrylsäureestern

摘要

The invention relates to a method for producing (meth)acrylic acid esters by reacting (meth)acrylic acid with C4-C12-alkanols in the presence of sulfuric acid or of a sulfuric acid mono-C4-C12-alkyl ester as a catalyst, wherein the catalyst is regenerated by extraction with water from the reaction mixture and the aqueous catalyst solution is reintroduced into the esterification. The concentration of non-reacted alkanol in the reaction mixture that is to be extracted amounts to a maximum of 5 wt.% in relation to said reaction mixture.