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    Method for producing butanediol dimethacrylates
    1.
    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。

    METHOD FOR PRODUCING BUTANEDIOL DIMETHACRYLATES
    4.
    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
    5.
    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
    6.
    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。