Invention Grant
- Patent Title: Method for producing (meth)acrylates
- Patent Title (中): (甲基)丙烯酸酯的制造方法
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Application No.: US12667599Application Date: 2008-05-08
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Publication No.: US08049030B2Publication Date: 2011-11-01
- Inventor: Guido Protzmann , Harald Trauthwein , Joachim Knebel , Thorben Schuetz , Gerhard Koelbl , Thomas Kehr , Guenther Lauster
- Applicant: Guido Protzmann , Harald Trauthwein , Joachim Knebel , Thorben Schuetz , Gerhard Koelbl , Thomas Kehr , Guenther Lauster
- Applicant Address: DE Darmstadt
- Assignee: Evonik Röhm GmbH
- Current Assignee: Evonik Röhm GmbH
- Current Assignee Address: DE Darmstadt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102007031470 20070705
- International Application: PCT/EP2008/055667 WO 20080508
- International Announcement: WO2009/003744 WO 20090108
- Main IPC: C07C67/02
- IPC: C07C67/02

Abstract:
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.
Public/Granted literature
- US20100204509A1 METHOD FOR PRODUCING (METH)ACRYLATES Public/Granted day:2010-08-12
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