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2. 发明公开

EP2649038A1 VERFAHREN ZUR HERSTELLUNG VON (METH)ACRYLSÄUREESTERN 无效转让
标题翻译： VERFAHREN ZUR HERSTELLUNG VON（METH）ACRYLSÄUREESTERN
公开(公告)号：EP2649038A1
公开(公告)日：2013-10-16
申请号：EP11796659.8
申请日：2011-12-06
申请人： Evonik Degussa GmbH
发明人： MOSLER, Jürgen , NEUMEISTER, Joachim , LEISTNER, Jörg , FRICKE, Michael Bernd
IPC分类号： C07C67/08 , C07C69/54
CPC分类号： C07C67/08 , C07C67/60 , C08F220/18 , C08F2220/1825 , C07C69/54 , C08F220/06
摘要： The present invention relates to a process for preparing (meth)acrylic esters by reacting an alcohol phase with a (meth)acrylic acid phase, which comprises the process step: - contacting of a liquid phase comprising the (meth)acrylic ester and unreacted (meth)acrylic acid with a base and neutralization of the unreacted (meth)acrylic acid by the base, wherein at least one of the following conditions is fulfilled: i) the pH of the liquid phase after contacting with the base is not more than 10.5; ii)the base is used in such an amount that the molar ratio of hydroxide ions which the base is able to liberate to (meth)acrylic acid (OH
- :(meth)acrylic acid) is not more than 1.10:1. The present invention also relates to a (meth)acrylic ester, a process for preparing a polymer based on (meth)acrylic esters and also the polymer which is based on (meth)acrylic esters and can be obtained by this process.
摘要翻译：本发明涉及一种通过使醇相与（甲基）丙烯酸相反应制备（甲基）丙烯酸酯的方法，该方法包括以下步骤： - 将包含（甲基）丙烯酸酯和未反应（（甲基）丙烯酸，碱处理未反应的（甲基）丙烯酸，其中满足以下条件中的至少一个：i）与碱接触后液相的pH不大于10.5 ; ii）碱的用量使得碱能够释放到（甲基）丙烯酸（OH - （甲基）丙烯酸）的氢氧根离子的摩尔比不大于1.10:1。本发明还涉及（甲基）丙烯酸酯，制备基于（甲基）丙烯酸酯的聚合物的方法，以及基于（甲基）丙烯酸酯的聚合物，并且可以通过该方法获得。

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