Method for producing (meth) acrylic acid esters
AssigneeBASF SE
InventorsHeinrich Aichinger, Michael Fried, Gerhard Nestler
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AssigneeBASF SE
InventorsHeinrich Aichinger, Michael Fried, Gerhard Nestler
Estimating the term…
(Meth)acrylic esters are prepared by reacting (meth)acrylic acid with a C4-C12-alkanol in the presence of sulfuric acid or a mono-C4-C12-alkyl sulfate as catalyst, wherein a) the reaction is carried out in an esterification unit which comprises a first reactor and at least one further reactor, b) a mixture of (meth)acrylic acid, C4-C12-alkanol and catalyst which contains not more than 5% by weight of water, based on the sum of the starting materials, is introduced into the first reactor, c) the esterification in the first reactor is conducted without removing ester, alkanol or water to a (meth)acrylic acid conversion of at least 40%, but only so far that the mixture remains a single phase, and d) the esterification is continued in at least one further reactor with the water formed being removed by distillation.
A process for preparing (meth)acrylic esters, which comprises:
Dependencies are inferred from the claim text.