发明授权
- 专利标题: Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification
- 专利标题(中): 甲基丙烯醛的制备方法及其直接氧化酯化的调理/排水
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申请号: US14916440申请日: 2014-08-27
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公开(公告)号: US09580374B2公开(公告)日: 2017-02-28
- 发明人: Steffen Krill , Matthias Groemping , Alexander Lygin , Torsten Balduf , Rudolf Burghardt
- 申请人: Steffen Krill , Matthias Groemping , Alexander Lygin , Torsten Balduf , Rudolf Burghardt
- 申请人地址: DE Darmstadt
- 专利权人: EVONIK ROEHM GmbH
- 当前专利权人: EVONIK ROEHM GmbH
- 当前专利权人地址: DE Darmstadt
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: EP13186137 20130926
- 国际申请: PCT/EP2014/068171 WO 20140827
- 国际公布: WO2015/043861 WO 20150402
- 主分类号: C07C45/75
- IPC分类号: C07C45/75 ; C07C45/80 ; C07C45/82 ; C07C67/54 ; C07C67/39 ; C07C45/84
摘要:
The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein and the preparation of methacrolein. It is a feature of this novel process that it was possible to distinctly increase the yield and the efficiency of the process compared to the prior art through a sequence of different distillation steps.
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