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    Process for production of methacrylic acid ester having increased yield
    2.
    发明授权
    Process for production of methacrylic acid ester having increased yield 有权
    生产产率提高的甲基丙烯酸酯的方法

    公开(公告)号：US09000211B2

    公开(公告)日：2015-04-07

    申请号：US13877388

    申请日：2011-10-04

    申请人： Andrew M. Lemonds ,  Jinsuo Xu

    发明人： Andrew M. Lemonds ,  Jinsuo Xu

    IPC分类号： C07C67/20 ,  C07C67/327

    CPC分类号： C07C67/327 ,  C07C67/20 ,  C07C69/54

    摘要： This invention provides a method for producing α,β-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional α,β-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element and may include a porous support and/or a promoter element selected from at least one of phosphorous, boron, titanium, zinc, zirconium, tin, bismuth, cerium, and alkaline earth metals. The method for producing methacrylic acid esters, such as methylmethacrylate (MMA), comprises the steps of: i) providing an alkyl alcohol and an organic traction comprising an alkyl methacrylate, an alkyl α-hydroxyisobutyrate and an alkoxyisobutyrate; ii) vaporizing at least a portion of the organic fraction and at least a portion of the alkyl alcohol; iii) contacting the vaporized organic fraction and alcohol with a catalyst comprising at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium and francium, to convert the alkyl ahydroxyisobutyrate and alkyl alkoxyisobutyrate to additional alkyl methacrylate and produce a mixture comprising alkyl methacrylate, methacrylic acid, alkyl alcohol, and water.

    摘要翻译： 本发明提供了通过将反应副产物分离并同时催化转化为另外的α，β-不饱和羧酸酯产物，从丙酮氰醇和硫酸中高产率生产α，β-不饱和羧酸酯的方法。 催化剂包含至少一种IA族元素，并且可以包括选自磷，硼，钛，锌，锆，锡，铋，铈和碱土金属中的至少一种的多孔载体和/或助催化剂元素。 用于生产甲基丙烯酸酯的方法，如甲基丙烯酸甲酯（MMA），包括以下步骤：i）提供包含甲基丙烯酸烷基酯，α-羟基异丁酸烷基酯和烷氧基异丁酸酯的烷基醇和有机牵引; ii）蒸发至少一部分有机部分和至少一部分烷基醇; iii）使蒸发的有机部分和醇与包含至少一种选自锂，钠，钾，铷，铯和铯的元素的催化剂接触，将烷基羟基异丁酸烷基酯和烷氧基异丁酸烷基酯转化为另外的甲基丙烯酸烷基酯，并产生 包含甲基丙烯酸烷基酯，甲基丙烯酸，烷基醇和水的混合物。

    PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTER HAVING INCREASED YIELD
    3.
    发明申请
    PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTER HAVING INCREASED YIELD 有权
    生产具有增加的产量的甲基丙烯酸酯的方法

    公开(公告)号：US20130338396A1

    公开(公告)日：2013-12-19

    申请号：US13877388

    申请日：2011-10-04

    申请人： Andrew M. Lemonds ,  Jinsuo Xu

    发明人： Andrew M. Lemonds ,  Jinsuo Xu

    IPC分类号： C07C67/327

    CPC分类号： C07C67/327 ,  C07C67/20 ,  C07C69/54

    摘要： This invention provides a method for producing α,β-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional α,β-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element and may include a porous support and/or a promoter element selected from at least one of phosphorous, boron, titanium, zinc, zirconium, tin, bismuth, cerium, and alkaline earth metals. The method for producing methacrylic acid esters, such as methylmethacrylate (MMA), comprises the steps of: i) providing an alkyl alcohol and an organic traction comprising an alkyl methacrylate, an alkyl α-hydroxyisobutyrate and an alkoxyisobutyrate; ii) vaporizing at least a portion of the organic fraction and at least a portion of the alkyl alcohol; iii) contacting the vaporized organic fraction and alcohol with a catalyst comprising at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium and francium, to convert the alkyl ahydroxyisobutyrate and alkyl alkoxyisobutyrate to additional alkyl methacrylate and produce a mixture comprising alkyl methacrylate, methacrylic acid, alkyl alcohol, and water.

    摘要翻译： 本发明提供了通过将反应副产物分离并同时催化转化成另外的α，β-不饱和羧酸酯产物，从丙酮氰醇和硫酸以高产率生产α，β-不饱和羧酸酯的方法。 催化剂包含至少一种IA族元素，并且可以包括选自磷，硼，钛，锌，锆，锡，铋，铈和碱土金属中的至少一种的多孔载体和/或助催化剂元素。 用于生产甲基丙烯酸酯的方法，如甲基丙烯酸甲酯（MMA），包括以下步骤：i）提供包含甲基丙烯酸烷基酯，α-羟基异丁酸烷基酯和烷氧基异丁酸酯的烷基醇和有机牵引; ii）蒸发至少一部分有机部分和至少一部分烷基醇; iii）使蒸发的有机部分和醇与包含至少一种选自锂，钠，钾，铷，铯和铯的元素的催化剂接触，将烷基羟基异丁酸烷基酯和烷氧基异丁酸烷基酯转化为另外的甲基丙烯酸烷基酯，并产生 包含甲基丙烯酸烷基酯，甲基丙烯酸，烷基醇和水的混合物。