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    PROCESS FOR PREPARING (METH)ACRYLATES
    5.
    发明申请
    PROCESS FOR PREPARING (METH)ACRYLATES 有权
    制备（甲基）丙烯酸酯的方法

    公开(公告)号：US20100280205A1

    公开(公告)日：2010-11-04

    申请号：US12745703

    申请日：2008-09-29

    申请人： Joachim Knebel ,  Ralf Merbach ,  Guido Protzmann ,  Klaus Gottmann ,  John Hirsh ,  Gerold Schmitt ,  Dieter Tessmer ,  Wilhelm Karnbrock ,  Wolfgang Klesse ,  Volker Kerscher

    发明人： Joachim Knebel ,  Ralf Merbach ,  Guido Protzmann ,  Klaus Gottmann ,  John Hirsh ,  Gerold Schmitt ,  Dieter Tessmer ,  Wilhelm Karnbrock ,  Wolfgang Klesse ,  Volker Kerscher

    IPC分类号： C08F120/12 ,  C07C69/54

    CPC分类号： C07C67/03 ,  C08F20/18 ,  C08F120/12 ,  C07C69/54

    摘要： Process for preparing (meth)acrylates of the formula (I) CH2═C(R1)—CO—O—R2   (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2═C(R1)—CO—OR3   (II) with an alcohol of the formula (III) HO—R2   (III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in litres of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25° C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

    摘要翻译： 制备式（I）的（甲基）丙烯酸酯的方法，其中R 1是氢或甲基，R 2是饱和或不饱和的，直链或支链的脂族或环状的 具有6至22个碳原子的烷基或（C 6 -C 14） - 芳基 - （C 1 -C 8） - 烷基; 通过使式II CH 2 = C（R 1）-CO-OR 3（II）的（甲基）丙烯酸酯与式（III）的醇HO-R 2（III）在一定量的合适的催化剂存在下反应， 催化反应和一定量的酚聚合抑制剂或两种或多种酚聚合抑制剂的组合，其足以抑制不期望的聚合; 反应是通过输入或引入反应混合物中进行的，所述反应混合物是由一定量的氧气或足够抑制不期望的聚合的氧气混合物的反应而产生的，并且该方法的特征在于特定的总氧气输入量小于或等于 至1.0l / kg，以公斤式（I）的（甲基）丙烯酸酯计，氧气的导入量在25℃，压力为101 325帕斯卡时计算。 所得到的（甲基）丙烯酸酯可以令人惊奇地加工成特别高分子量的乳液聚合物，例如非常适合用作矿物油提取中的阻流剂。

    METHOD FOR PRODUCING METHACRYLIC ACID
    8.
    发明申请
    METHOD FOR PRODUCING METHACRYLIC ACID 有权
    生产甲基丙烯酸的方法

    公开(公告)号：US20120004460A9

    公开(公告)日：2012-01-05

    申请号：US12864985

    申请日：2009-01-13

    申请人： Udo Gropp ,  Stefanie Sohnemann ,  Guido Protzmann ,  Thomas Mertz

    发明人： Udo Gropp ,  Stefanie Sohnemann ,  Guido Protzmann ,  Thomas Mertz

    IPC分类号： C07C57/065 ,  B01J19/00

    CPC分类号： C07C51/06 ,  C07C57/04

    摘要： The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.

    摘要翻译： 本发明涉及通过使甲基丙烯酰胺与水反应生产甲基丙烯酸的方法，其中所述反应在管式反应器中连续进行，并且在所述管式反应器内的反应混合物的流动方向上存在压差。 此外，本发明公开了一种用于实施本发明的方法的设备。

    METHOD FOR PRODUCING BUTANEDIOL DIMETHACRYLATES
    9.
    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。

    Process for preparing (meth)acrylates
    10.
    发明授权
    Process for preparing (meth)acrylates 有权
    （甲基）丙烯酸酯的制备方法

    公开(公告)号：US09206270B2

    公开(公告)日：2015-12-08

    申请号：US12745703

    申请日：2008-09-29

    申请人： Joachim Knebel ,  Ralf Merbach ,  Guido Protzmann ,  Klaus Gottmann ,  John Hirsh ,  Gerold Schmitt ,  Dieter Tessmer ,  Wilhelm Karnbrock ,  Wolfgang Klesse ,  Volker Kerscher

    发明人： Joachim Knebel ,  Ralf Merbach ,  Guido Protzmann ,  Klaus Gottmann ,  John Hirsh ,  Gerold Schmitt ,  Dieter Tessmer ,  Wilhelm Karnbrock ,  Wolfgang Klesse ,  Volker Kerscher

    IPC分类号： C08F118/02 ,  C07C69/52 ,  C08F20/18 ,  C07C67/03 ,  C08F120/12

    CPC分类号： C07C67/03 ,  C08F20/18 ,  C08F120/12 ,  C07C69/54

    摘要： Process for preparing (meth)acrylates of the formula (I) CH2═C(R1)—CO—O—R2  (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2═C(R1)—CO—OR3  (II) with an alcohol of the formula (III) HO—R2  (III) in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25° C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

    摘要翻译： 制备式（I）的（甲基）丙烯酸酯的方法，其中R 1是氢或甲基，R 2是饱和或不饱和的，直链或支链的脂族或环状的 具有6-22个碳原子的烷基或（C 6 -C 14） - 芳基 - （C 1 -C 8） - 烷基; 通过使式II CH 2 = C（R 1）-CO-OR 3（II）的（甲基）丙烯酸酯与式（III）的醇HO-R 2（III）在一定量的合适的催化剂存在下反应， 催化反应和一定量的酚聚合抑制剂或两种或多种酚类聚合抑制剂的组合，其足以抑制不期望的聚合; 反应是通过输入或引入反应混合物中进行的，所述反应混合物是由一定量的氧气或足够抑制不期望的聚合的氧气混合物的反应而产生的，并且该方法的特征在于，具体的总氧气输入量小于或等于 至1.0l / kg，以公斤式（I）的（甲基）丙烯酸酯计，氧气的导入量在25℃，压力为101 325帕斯卡时计算。 所得到的（甲基）丙烯酸酯可以令人惊奇地加工成特别高分子量的乳液聚合物，例如非常适合用作矿物油提取中的阻流剂。