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1.发明公开
公开(公告)号：EP3024812A1
公开(公告)日：2016-06-01
申请号：EP14741261.3
申请日：2014-07-15
申请人： Evonik Röhm GmbH
IPC分类号： C07C45/75
CPC分类号： C07C45/75 , C07C45/786 , C07C45/82 , C07C47/22
摘要： The invention concerns the regulating of the water content in a method for producing methacrolein. Methacrolein is used in chemical synthesis, in particular as an intermediate product for producing methacrylic acid, methylmethacrylate or also active substances, odorous substances or flavourings. The present invention concerns in particular the regulating of the water content in a method for producing methacrolein from formaldehyde and propionaldehyde by means of Mannich condensation.
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2.发明公开VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON ALKYLAMINO(METH)ACRYLAMIDEN 审中-公开PROCESS FOR烷基氨基（甲基）丙烯酰胺连续生产
公开(公告)号：EP2417098A1
公开(公告)日：2012-02-15
申请号：EP10706252.3
申请日：2010-03-03
申请人： Evonik Röhm GmbH
发明人： SCHMITT, Bardo , KLESSE, Wolfgang , EBERT, Martina , BRÖLL, Dirk , PROTZMANN, Guido , KNEBEL, Joachim , KEHR, Thomas , STADLER, Hans-Gerhard , KÖLBL, Gerhard , LAUX, Benedikt
IPC分类号： C07C231/02 , C07C233/38
CPC分类号： C07C231/02 , Y02P20/582 , Y02P20/584 , C07C233/38
摘要： The invention relates to a method for continuously producing alkylamino(meth)acrylamides by reacting alkyl(meth)acrylates with high-boiling amines. A catalyst activation and special regeneration technique allow for product qualities that have not yet been achieved. Furthermore, very high space-time and total yields can be achieved.
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公开(公告)号：EP2162421A1
公开(公告)日：2010-03-17
申请号：EP08750177.1
申请日：2008-05-08
申请人： Evonik Röhm GmbH
发明人： KNEBEL, Joachim , SCHÜTZ, Thorben , TRAUTHWEIN, Harald , KEHR, Thomas , LAUSTER, Günter , PROTZMANN, Guido , KÖLBL, Gerhard , WESTHÄUSER, Günter
摘要： The invention relates to a method for producing butanediol dimethacrylates, comprising the transesterification of butanediol with an ester of the methacrylic acid in the presence of catalysts. The catalyst used is a combination that comprises at least one lithium compound and at least one calcium compound, at least one of the compounds of the lithium and/or the calcium being an oxide, a hydroxide, an alkoxide with 1 to 4 carbon atoms or a carboxylate with 1 to 4 carbon atoms and at least part of the reaction taking place in the presence of an effective amount of water. The method according to the invention allows an especially cost-effective production of high-purity butanediol dimethacrylates.
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公开(公告)号：EP3450422A1
公开(公告)日：2019-03-06
申请号：EP17188252.5
申请日：2017-08-29
申请人： Evonik Röhm GmbH
摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von optischen Formmassen auf Basis von Methylmethacrylat, wobei dieses MMA mittels einer optimierten Methode hergestellt wurde und sich die Formmassen insbesondere durch einen sehr geringen Gelbwert auszeichnen. Das erfindungsgemäß verwendete MMA wurde dabei durch direkte oxidative Veresterung von Methacrolein hergestellt.
Insbesondere betrifft die vorliegende Erfindung eine optimierte Aufarbeitung des Reaktoraustrags der oxidativen Veresterung von Methacrolein, mittels der besonders färbende Nebenprodukte entfernt werden. Darüber hinaus hat dieses Verfahren den Vorteil, dass an die Apparative Ausgestaltung der Anlage weniger Ansprüche als im Stand der Technik beschrieben gestellt werden müssen.-
公开(公告)号：EP2162419B1
公开(公告)日：2014-07-23
申请号：EP08750179.7
申请日：2008-05-08
申请人： Evonik Röhm GmbH
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公开(公告)号：EP2162419A1
公开(公告)日：2010-03-17
申请号：EP08750179.7
申请日：2008-05-08
申请人： Evonik Röhm GmbH
发明人： KNEBEL, Joachim , SCHÜTZ, Thorben , PROTZMANN, Guido , TRAUTHWEIN, Harald , LAUSTER, Günther , KEHR, Thomas , KÖLBL, Gerhard , WESTHÄUSER, Günter
摘要： The invention relates to a method for producing ethylene glycol dimethacrylate, comprising the transesterification of ethylene glycol with an ester of the methacrylic acid in the presence of catalysts. The catalyst used is a combination that comprises lithium amide (LiNH2) and lithium chloride (LiCl). The method according to the invention allows an especially cost-effective production of high-purity ethylene glycol dimethacrylate.
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公开(公告)号：EP3024812B1
公开(公告)日：2019-01-02
申请号：EP14741261.3
申请日：2014-07-15
申请人： Evonik Röhm GmbH
IPC分类号： C07C45/75
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8.发明公开OPTIMIERTES VERFAHREN ZUR HERSTELLUNG VON METHACROLEIN 审中-公开优选VERFAHREN ZUR HERSTELLUNG VON METHACROLEIN
公开(公告)号：EP3194355A1
公开(公告)日：2017-07-26
申请号：EP15770484.2
申请日：2015-09-16
申请人： Evonik Röhm GmbH
发明人： BURGHARDT, Rudolf , KRILL, Steffen , BALDUF, Torsten , KÖLBL, Gerhard , KÖSTNER, Martin , RUNDAL, Eduard
CPC分类号： C07C45/75 , Y02P20/582 , C07C47/22
摘要： The invention relates to an optimized method for producing methacrolein. Methacrolein is used in chemical synthesis, in particular as an intermediate product for producing methacrylic acid, methylmethacrylate or also active substances, odorous substances or flavourings. The invention also relates to the optimization of process parameters, as a result of which, the content of harmful dimer methacrolien in the end product can be reduced.
摘要翻译： 本发明涉及用于生产甲基丙烯醛的优化方法。 甲基丙烯醛用于化学合成，特别是用作生产甲基丙烯酸，甲基丙烯酸甲酯或活性物质，异味物质或调味剂的中间产品。 本发明还涉及工艺参数的优化，其结果是可以降低最终产品中有害的二聚甲基丙烯醛的含量。
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公开(公告)号：EP2162423A1
公开(公告)日：2010-03-17
申请号：EP08750178.9
申请日：2008-05-08
申请人： Evonik Röhm GmbH
发明人： PROTZMANN, Guido , TRAUTHWEIN, Harald , KNEBEL, Joachim , SCHÜTZ, Thorben , KÖLBL, Gerhard , KEHR, Thomas , LAUSTER, Günter
摘要： The invention relates to a method for producing (meth)acrylates, comprising the transesterification of an alcohol with a low-boiling ester of the (meth)acrylic acid in the presence of catalysts, the alcohol released by the low-boiling ester of the (meth)acrylic acid being removed by distillation. The invention is characterized in that the mole ratio of the low-boiling ester of the (meth)acrylic acid to the feedstock alcohol present in the reaction mixture is increased during the reaction by adding low-boiling esters of the (meth)acrylic acid. The method according to the invention allows an especially cost-effective production of high-purity (meth)acrylates.
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公开(公告)号：EP3194355B1
公开(公告)日：2019-08-21
申请号：EP15770484.2
申请日：2015-09-16
申请人： Evonik Röhm GmbH
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