The present invention relates to a process for preparing (meth)acrylates, which comprises the transesterification of an alcohol with a low-boiling ester of (meth)acrylic acid in the presence of catalysts, with the alcohol liberated from the low-boiling ester of (meth)acrylic acid being separated off by distillation, characterized in that the molar ratio of low-boiling ester of (meth)acrylic acid to starting alcohol present in the reaction mixture is increased during the reaction by addition of low-boiling ester of (meth)acrylic acid. The process of the invention makes a particularly inexpensive preparation of (meth)acrylates having a very high purity possible.
本发明涉及一种制备(甲基)
丙烯酸酯的过程,其包括在催化剂的存在下,用低沸点(甲基)
丙烯酸酯与醇进行酯交换反应,从低沸点(甲基)
丙烯酸酯中释放出的醇通过蒸馏分离,其特征在于反应混合物中的低沸点(甲基)
丙烯酸酯与起始醇的摩尔比在反应过程中通过添加低沸点(甲基)
丙烯酸酯而增加。本发明的方法可以特别廉价地制备高纯度的(甲基)
丙烯酸酯。