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    METHOD FOR PRODUCING BUTANEDIOL DIMETHACRYLATES
    5.
    发明申请
    METHOD FOR PRODUCING BUTANEDIOL DIMETHACRYLATES 有权
    生产丁二醇二甲基丙烯酸酯的方法

    公开(公告)号：US20100197955A1

    公开(公告)日：2010-08-05

    申请号：US12667822

    申请日：2008-05-08

    申请人： Joachim Knebel ,  Thorben Schuetz ,  Harald Trauthwein ,  Thomas Kehr ,  Guenther Lauster ,  Guido Protzmann ,  Gerhard Koelbl ,  Guenter Westhaeuser

    发明人： Joachim Knebel ,  Thorben Schuetz ,  Harald Trauthwein ,  Thomas Kehr ,  Guenther Lauster ,  Guido Protzmann ,  Gerhard Koelbl ,  Guenter Westhaeuser

    IPC分类号： C07C67/03

    CPC分类号： C07C67/03 ,  C07C69/54

    摘要： The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.

    摘要翻译： 本发明涉及制备丁二醇二甲基丙烯酸酯的方法，其包括在催化剂存在下丁二醇与甲基丙烯酸酯的酯交换反应，其中使用包含至少一种锂化合物和至少一种钙化合物的组合作为催化剂， 锂和/或钙的化合物中的至少一种是氧化物，氢氧化物，具有1至4个碳原子的醇盐或具有1至4个碳原子的羧酸盐，并且至少部分反应在 存在有效量的水。 本发明的方法使得可以特别廉价地制备具有非常高纯度的丁二醇二甲基丙烯酸酯。

    Method for producing (meth)acrylates
    6.
    发明授权
    Method for producing (meth)acrylates 失效
    （甲基）丙烯酸酯的制造方法

    公开(公告)号：US08049030B2

    公开(公告)日：2011-11-01

    申请号：US12667599

    申请日：2008-05-08

    申请人： Guido Protzmann ,  Harald Trauthwein ,  Joachim Knebel ,  Thorben Schuetz ,  Gerhard Koelbl ,  Thomas Kehr ,  Guenther Lauster

    发明人： Guido Protzmann ,  Harald Trauthwein ,  Joachim Knebel ,  Thorben Schuetz ,  Gerhard Koelbl ,  Thomas Kehr ,  Guenther Lauster

    IPC分类号： C07C67/02

    CPC分类号： C07C67/03 ,  C07C67/54 ,  C07C69/54

    摘要： 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.

    摘要翻译： 本发明涉及一种制备（甲基）丙烯酸酯的方法，其包括在催化剂存在下醇与低沸点酯（（甲基）丙烯酸）的酯交换反应，从低沸点酯 （甲基）丙烯酸通过蒸馏分离，其特征在于反应中存在的（甲基）丙烯酸的低沸点酯与起始醇的摩尔比在反应期间通过加入低沸点酯（ 甲基）丙烯酸。 本发明的方法使得可以特别廉价地制备具有非常高纯度的（甲基）丙烯酸酯。

    METHOD FOR PRODUCING (METH)ACRYLATES
    7.
    发明申请
    METHOD FOR PRODUCING (METH)ACRYLATES 失效
    生产（甲基）丙烯酸酯的方法

    公开(公告)号：US20100204509A1

    公开(公告)日：2010-08-12

    申请号：US12667599

    申请日：2008-05-08

    申请人： Guido Protzmann ,  Harald Trauthwein ,  Joachim Knebel ,  Thorben Schuetz ,  Gerhard Koelbl ,  Thomas Kehr ,  Guenther Lauster

    发明人： Guido Protzmann ,  Harald Trauthwein ,  Joachim Knebel ,  Thorben Schuetz ,  Gerhard Koelbl ,  Thomas Kehr ,  Guenther Lauster

    IPC分类号： C07C67/03

    CPC分类号： C07C67/03 ,  C07C67/54 ,  C07C69/54

    摘要： 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.

    摘要翻译： 本发明涉及一种制备（甲基）丙烯酸酯的方法，其包括在催化剂存在下醇与低沸点酯（（甲基）丙烯酸）的酯交换反应，从低沸点酯 （甲基）丙烯酸通过蒸馏分离，其特征在于反应中存在的（甲基）丙烯酸的低沸点酯与起始醇的摩尔比在反应期间通过加入低沸点酯（ 甲基）丙烯酸。 本发明的方法使得可以特别廉价地制备具有非常高纯度的（甲基）丙烯酸酯。

    Method for producing butanediol dimethacrylates
    8.
    发明授权
    Method for producing butanediol dimethacrylates 有权
    丁二醇二甲基丙烯酸酯的制备方法

    公开(公告)号：US08039664B2

    公开(公告)日：2011-10-18

    申请号：US12667822

    申请日：2008-05-08

    申请人： Joachim Knebel ,  Thorben Schuetz ,  Harald Trauthwein ,  Thomas Kehr ,  Guenther Lauster ,  Guido Protzmann ,  Gerhard Koelbl ,  Guenter Westhaeuser

    发明人： Joachim Knebel ,  Thorben Schuetz ,  Harald Trauthwein ,  Thomas Kehr ,  Guenther Lauster ,  Guido Protzmann ,  Gerhard Koelbl ,  Guenter Westhaeuser

    IPC分类号： C07C67/02

    CPC分类号： C07C67/03 ,  C07C69/54

    摘要： The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.

    摘要翻译： 本发明涉及制备丁二醇二甲基丙烯酸酯的方法，其包括在催化剂存在下丁二醇与甲基丙烯酸酯的酯交换反应，其中使用包含至少一种锂化合物和至少一种钙化合物的组合作为催化剂， 锂和/或钙的化合物中的至少一种是氧化物，氢氧化物，具有1至4个碳原子的醇盐或具有1至4个碳原子的羧酸盐，并且至少部分反应在 存在有效量的水。 本发明的方法使得可以特别廉价地制备具有非常高纯度的丁二醇二甲基丙烯酸酯。

    PROCESS FOR PREPARATION OF HIGHLY PURE, NON-YELLOWING METHACRYLIC ACID
    9.
    发明申请
    PROCESS FOR PREPARATION OF HIGHLY PURE, NON-YELLOWING METHACRYLIC ACID 有权
    制备高纯度，非黄色甲基丙烯酸的方法

    公开(公告)号：US20150126777A1

    公开(公告)日：2015-05-07

    申请号：US14397295

    申请日：2013-04-22

    申请人： Zhengfeng Zhang ,  Gerhard Koelbl ,  Lorenza Sartorelli ,  Horst Hiltner ,  Huisheng Wang ,  Mirko Michel

    发明人： Zhengfeng Zhang ,  Gerhard Koelbl ,  Lorenza Sartorelli ,  Horst Hiltner ,  Huisheng Wang ,  Mirko Michel

    IPC分类号： C07C51/47 ,  C07C51/43 ,  C07C51/44

    CPC分类号： C07C51/47 ,  C07C51/43 ,  C07C51/44 ,  C07C51/48 ,  C07C57/04

    摘要： This invention relates to a process of preparing highly pure, non-yellowing (meth)acrylic acid necessary for high-tech applications requiring long-tem color stability in the presence of amines. Process for the preparation of highly pure, non-yellowing (meth)acrylic acid comprising the steps: f) Condensation of a (meth)acrylic acid-containing gas phase obtained via a gas phase oxidation process of a C4-compound to generate an aqueous (meth)acrylic acid solution g) Separation of the (meth)acrylic acid from the aqueous (meth)acrylic acid solution to obtain crude (meth)acrylic acid h) Rectification of the crude (meth)acrylic acid to obtain pure (meth)acrylic acid via a sidestream outlet of the rectification column i) Treatment of the pure (meth)acrylic acid generated in step c) with an ion exchange resin j) Distillation of the (meth)acrylic acid generated in step d).

    摘要翻译： 本发明涉及制备在胺存在下需要长期颜色稳定性的高科技应用所需的高纯度，非黄变（甲基）丙烯酸的方法。 制备高纯度，不变黄（甲基）丙烯酸的方法，包括以下步骤：f）通过C4-化合物的气相氧化方法获得的含（甲基）丙烯酸的气相的缩合产生水 （甲基）丙烯酸溶液g）从（甲基）丙烯酸水溶液中分离出（甲基）丙烯酸，得到粗（甲基）丙烯酸h）精制粗（甲基）丙烯酸，得到纯（甲基） 通过精馏塔的侧流出口进行丙烯酸的处理i）用离子交换树脂处理步骤c）中生成的纯（甲基）丙烯酸j）蒸馏步骤d）中生成的（甲基）丙烯酸。

    Process for preparation of high purity methacrylic acid
    10.
    发明授权
    Process for preparation of high purity methacrylic acid 有权
    制备高纯度甲基丙烯酸的方法

    公开(公告)号：US08426637B2

    公开(公告)日：2013-04-23

    申请号：US12810098

    申请日：2008-11-17

    申请人： Martin Koestner ,  Gerhard Koelbl ,  Ralf Meier

    发明人： Martin Koestner ,  Gerhard Koelbl ,  Ralf Meier

    IPC分类号： C07C51/16 ,  C07C51/42 ,  C07C69/52 ,  C08F20/06

    CPC分类号： C07C51/48 ,  B01D3/14 ,  C07C51/252 ,  C07C51/43 ,  C07C51/44 ,  C07C67/08 ,  Y02P20/582 ,  C07C57/04 ,  C07C69/54

    摘要： The present invention relates to a process for preparation of pure methacrylic acid, at least comprising the process steps: a) gas phase oxidation of a C4 compound to obtain a methacrylic acid-comprising gas phase, b) condensation of the methacrylic acid-comprising gas phase to obtain an aqueous methacrylic acid solution, c) separation of at least a part of the methacrylic acid from the aqueous methacrylic acid solution to obtain at least one crude methacrylic acid-comprising product; d) separation of at least a part of the methacrylic acid from the at least one crude methacrylic acid-comprising product by means of a thermal separation process to obtain a pure methacrylic acid.

    摘要翻译： 本发明涉及制备纯甲基丙烯酸的方法，至少包括以下工艺步骤：a）C4化合物的气相氧化以获得含甲基丙烯酸的气相，b）含甲基丙烯酸的气体的冷凝 以获得甲基丙烯酸水溶液，c）从甲基丙烯酸水溶液中分离至少一部分甲基丙烯酸以获得至少一种粗甲基丙烯酸的产物; d）通过热分离方法将至少一部分甲基丙烯酸与至少一种含粗甲基丙烯酸的产物分离，得到纯甲基丙烯酸。