Invention Grant
- Patent Title: Method for producing ethylene glycol dimethacrylate
- Patent Title (中): 乙二醇二甲基丙烯酸酯的制备方法
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Application No.: US12667538Application Date: 2008-05-08
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Publication No.: US08686181B2Publication Date: 2014-04-01
- Inventor: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
- Applicant: Joachim Knebel , Thorben Schuetz , Guido Protzmann , Harald Trauthwein , Guenther Lauster , Thomas Kehr , Gerhard Koelbl , Guenter Westhaeuser
- Applicant Address: DE Darmstadt
- Assignee: Evonik Roehm GmbH
- Current Assignee: Evonik Roehm GmbH
- Current Assignee Address: DE Darmstadt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102007031473 20070705
- International Application: PCT/EP2008/055668 WO 20080508
- International Announcement: WO2009/003745 WO 20090108
- Main IPC: C07C67/03
- IPC: C07C67/03
Abstract:
The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH2) and lithium chloride (LiCl) is used as catalyst. The process of the invention makes it possible to prepare ethylene glycol dimethacrylate particularly inexpensively and in a very high purity.
Public/Granted literature
- US20130172598A1 METHOD FOR PRODUCING ETHYLENE GLYCOL DIMETHACRYLATE Public/Granted day:2013-07-04
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