发明授权
- 专利标题： Method for producing (meth)acrylates
- 专利标题（中）： （甲基）丙烯酸酯的制造方法
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申请号： US12667599申请日： 2008-05-08
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公开(公告)号： US08049030B2公开(公告)日： 2011-11-01
- 发明人: Guido Protzmann , Harald Trauthwein , Joachim Knebel , Thorben Schuetz , Gerhard Koelbl , Thomas Kehr , Guenther Lauster
- 申请人： Guido Protzmann , Harald Trauthwein , Joachim Knebel , Thorben Schuetz , Gerhard Koelbl , Thomas Kehr , Guenther Lauster
- 申请人地址： DE Darmstadt
- 专利权人： Evonik Röhm GmbH
- 当前专利权人： Evonik Röhm GmbH
- 当前专利权人地址： DE Darmstadt
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： DE102007031470 20070705
- 国际申请： PCT/EP2008/055667 WO 20080508
- 国际公布： WO2009/003744 WO 20090108
- 主分类号： C07C67/02
- IPC分类号： C07C67/02
摘要：
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.
公开/授权文献
- US20100204509A1 METHOD FOR PRODUCING (METH)ACRYLATES 公开/授权日：2010-08-12