C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/54 (2006.01) C07C 67/08 (2006.01) C07C 67/327 (2006.01) C07C 67/60 (2006.01)
Patent
CA 2184197
In a process for esterifying (meth)acrylic acid with an alkanol in the presence of an acidic esterification catalyst, in which unconverted star- ting compounds and the (meth)acrylates to be formed are separated off by distillation and an oxyester-containing bottom product is formed, the bottom product is separated off and is heated in the presence of an acid to 150- 250°C and the pressure is adjusted so that the cleavage products formed under the abovementioned conditions from the oxyesters contained in the bottom product evaporate directly. The process can be carried out in the presence of molecular oxygen. Mineral acids, for example sulfuric acid or phosphoric acid and/or alkanesulfonic or arylsulfonic acids, for example methanesulfonic acid or p-toluenesulfonic acid, can be added to the bottom product.
Aichinger Heinrich
Geisendorfer Matthias
Herbst Holger
Nestler Gerhard
Aichinger Heinrich
Basf Aktiengesellschaft
Geisendorfer Matthias
Herbst Holger
Nestler Gerhard
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