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    Production by distillation of acetone cyanhydrin and method for producing methacrylic ester and subsequent products
    1.
    发明授权
    Production by distillation of acetone cyanhydrin and method for producing methacrylic ester and subsequent products 有权
    通过蒸馏丙酮氰醇生产和生产甲基丙烯酸酯及其后续产品的方法

    公开(公告)号：US08143434B2

    公开(公告)日：2012-03-27

    申请号：US12517673

    申请日：2007-08-31

    Applicant: Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    Inventor： Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    IPC: C07C253/00

    CPC classification number: C07C253/00 ,  C07C67/20 ,  C07C231/06 ,  C07C231/14 ,  C07C69/54 ,  C07C255/16 ,  C07C233/09

    Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture; C. discharging at least a portion of the acetone cyanohydrin obtained from the reactor; D. continuously distilling the discharged acetone cyanohydrin obtained to obtain an acetone cyanohydrin bottom product and an acetone top product in a distillation column; E. recycling at least a portion of the acetone top product into step A, the acetone top product being kept at less than 60° C. during the recycling, to a process for preparing an alkyl methacrylate, to a process for preparing methacrylic acid, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable from the process according to the invention in chemical products, and to chemical products based on the alkyl methacrylates obtainable by the processes according to the invention.

    Abstract translation: 本发明总体上涉及制备丙酮氰醇的方法，其包括如下步骤：A.在反应器中使丙酮和氢氰酸接触，得到反应混合物，使反应混合物循环，得到丙酮氰醇; B.冷却至少一些反应混合物; C.排出从反应器获得的至少一部分丙酮氰醇; D.在蒸馏塔中连续蒸馏得到的丙酮氰醇，得到丙酮氰醇底部产物和丙酮顶部产物; E.将至少一部分丙酮顶部产物再循环到步骤A中，丙酮顶部产物在回收期间保持在低于60℃，制备甲基丙烯酸烷基酯的方法，制备甲基丙烯酸的方法， 涉及制备甲基丙烯酸烷基酯的装置，至少部分地基于甲基丙烯酸烷基酯制备聚合物的方法，可以使用可从化学产品中得到的本发明方法得到的甲基丙烯酸烷基酯，以及基于甲基丙烯酸烷基酯的化学产物 可通过根据本发明的方法获得。

    PRODUCTION BY DISTILLATION OF ACETONE CYANHYDRIN AND METHOD FOR PRODUCING METHACRYLIC ESTER AND SUBSEQUENT PRODUCTS
    3.
    发明申请
    PRODUCTION BY DISTILLATION OF ACETONE CYANHYDRIN AND METHOD FOR PRODUCING METHACRYLIC ESTER AND SUBSEQUENT PRODUCTS 有权
    乙腈氰化氢的生产及生产甲基丙烯酸酯及其后续产品的方法

    公开(公告)号：US20100069594A1

    公开(公告)日：2010-03-18

    申请号：US12517673

    申请日：2007-08-31

    Applicant: Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    Inventor： Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    IPC: C08F20/10 ,  C07C253/30 ,  C07C67/22 ,  C07C51/06 ,  B01J19/00

    CPC classification number: C07C253/00 ,  C07C67/20 ,  C07C231/06 ,  C07C231/14 ,  C07C69/54 ,  C07C255/16 ,  C07C233/09

    Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture; C. discharging at least a portion of the acetone cyanohydrin obtained from the reactor; D. continuously distilling the discharged acetone cyanohydrin obtained to obtain an acetone cyanohydrin bottom product and an acetone top product in a distillation column; E. recycling at least a portion of the acetone top product into step A, the acetone top product being kept at less than 60° C. during the recycling, to a process for preparing an alkyl methacrylate, to a process for preparing methacrylic acid, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable from the process according to the invention in chemical products, and to chemical products based on the alkyl methacrylates obtainable by the processes according to the invention.

    Abstract translation: 本发明总体上涉及制备丙酮氰醇的方法，其包括如下步骤：A.在反应器中使丙酮和氢氰酸接触，得到反应混合物，使反应混合物循环，得到丙酮氰醇; B.冷却至少一些反应混合物; C.排出从反应器获得的至少一部分丙酮氰醇; D.在蒸馏塔中连续蒸馏得到的丙酮氰醇，得到丙酮氰醇底部产物和丙酮顶部产物; E.将至少一部分丙酮顶部产物再循环到步骤A中，丙酮顶部产物在回收期间保持在低于60℃，制备甲基丙烯酸烷基酯的方法，制备甲基丙烯酸的方法， 涉及制备甲基丙烯酸烷基酯的装置，至少部分地基于甲基丙烯酸烷基酯制备聚合物的方法，可以使用可从化学产品中得到的本发明方法得到的甲基丙烯酸烷基酯，以及基于甲基丙烯酸烷基酯的化学产物 可通过根据本发明的方法获得。

    METHOD FOR PRODUCING ACETONE CYANHYDRIN AND THE SUBSEQUENT PRODUCTS THEREOF BY SPECIFIC COOLING
    4.
    发明申请
    METHOD FOR PRODUCING ACETONE CYANHYDRIN AND THE SUBSEQUENT PRODUCTS THEREOF BY SPECIFIC COOLING 有权
    通过特定冷却生产乙腈氰基化合物及其后续产物的方法

    公开(公告)号：US20090299023A1

    公开(公告)日：2009-12-03

    申请号：US12442123

    申请日：2007-08-31

    Applicant: Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    Inventor： Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    IPC: C08F20/10 ,  C07C253/30 ,  C07C67/22 ,  C07C51/06 ,  B01J19/00

    CPC classification number: C07C231/14 ,  C07C51/06 ,  C07C67/20 ,  C07C231/06 ,  C07C253/00 ,  C07C57/04 ,  C07C69/54 ,  C07C233/09 ,  C07C255/16

    Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture by flowing it through a cooling region of a cooler, the cooler including one cooling element or at least two cooling elements; C. discharging at least a portion of the acetone cyanohydrin obtained from the reactor, the volume of the cooling region of the cooler based on the total internal volume of the cooler being greater than the volume of the cooling element or of the at least two cooling elements of the cooler, to a process for preparing an alkyl methacrylate, to a process for preparing a methacrylic acid, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable from the process according to the invention in chemical products, and to chemical products based on the alkyl methacrylates obtainable by the processes according to the invention.

    Abstract translation: 本发明总体上涉及制备丙酮氰醇的方法，其包括如下步骤：A.在反应器中使丙酮和氢氰酸接触，得到反应混合物，使反应混合物循环，得到丙酮氰醇; B.通过使至少一些反应混合物流过冷却器的冷却区域来冷却反应混合物，冷却器包括一个冷却元件或至少两个冷却元件; C.排出从反应器获得的丙酮氰醇的至少一部分，冷却器的冷却区域的体积基于冷却器的总内部容积大于冷却元件的体积或至少两个冷却 冷却器的元件，制备甲基丙烯酸烷基酯的方法，制备甲基丙烯酸的方法，制备甲基丙烯酸烷基酯的设备，至少部分地基于甲基丙烯酸烷基酯制备聚合物的方法，以使用 可从本发明的方法获得的甲基丙烯酸烷基酯化学产品，以及基于通过本发明的方法获得的甲基丙烯酸烷基酯的化学产品。

    Method for producing acetone cyanohydrin and the subsequent products thereof by specific cooling
    7.
    发明授权
    Method for producing acetone cyanohydrin and the subsequent products thereof by specific cooling 有权
    通过特定冷却生产丙酮氰醇的方法及其后续产物

    公开(公告)号：US08334399B2

    公开(公告)日：2012-12-18

    申请号：US12442123

    申请日：2007-08-31

    Applicant: Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    Inventor： Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    IPC: C07C253/00 ,  C07C57/02 ,  C07C51/08

    CPC classification number: C07C231/14 ,  C07C51/06 ,  C07C67/20 ,  C07C231/06 ,  C07C253/00 ,  C07C57/04 ,  C07C69/54 ,  C07C233/09 ,  C07C255/16

    Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture by flowing it through a cooling region of a cooler, the cooler including one cooling element or at least two cooling elements; C. discharging at least a portion of the acetone cyanohydrin obtained from the reactor, the volume of the cooling region of the cooler based on the total internal volume of the cooler being greater than the volume of the cooling element or of the at least two cooling elements of the cooler, to a process for preparing an alkyl methacrylate, to a process for preparing a methacrylic acid, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable from the process according to the invention in chemical products, and to chemical products based on the alkyl methacrylates obtainable by the processes according to the invention.

    Abstract translation: 本发明总体上涉及制备丙酮氰醇的方法，其包括如下步骤：A.在反应器中使丙酮和氢氰酸接触，得到反应混合物，使反应混合物循环，得到丙酮氰醇; B.通过使至少一些反应混合物流过冷却器的冷却区域来冷却反应混合物，冷却器包括一个冷却元件或至少两个冷却元件; C.排出从反应器获得的丙酮氰醇的至少一部分，冷却器的冷却区域的体积基于冷却器的总内部容积大于冷却元件的体积或至少两个冷却 冷却器的元件，制备甲基丙烯酸烷基酯的方法，制备甲基丙烯酸的方法，制备甲基丙烯酸烷基酯的设备，至少部分地基于甲基丙烯酸烷基酯制备聚合物的方法，以使用 可从本发明的方法获得的甲基丙烯酸烷基酯化学产品，以及基于通过本发明的方法获得的甲基丙烯酸烷基酯的化学产品。

    Method for producing methacrylic alkyl esters by way of azeotropic distillation
    10.
    发明授权
    Method for producing methacrylic alkyl esters by way of azeotropic distillation 有权
    通过共沸蒸馏生产甲基丙烯酸烷基酯的方法

    公开(公告)号：US08586779B2

    公开(公告)日：2013-11-19

    申请号：US12516629

    申请日：2007-08-31

    Applicant: Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    Inventor： Udo Gropp ,  Robert Weber ,  Thomas Schaefer ,  Andreas Perl ,  Rudolf Sing ,  Thomas Mertz

    IPC: C07C67/20 ,  B01J8/00

    CPC classification number: C07C231/06 ,  B01D3/36 ,  C07C67/20 ,  C07C67/54 ,  C07C69/54 ,  C07C233/09

    Abstract: The present invention relates in general terms to a process for preparing alkyl methacrylates, comprising as steps: providing an acetone cyanohydrin by a process according to one of the preceding claims; contacting the acetone cyanohydrin with an inorganic acid to obtain a methacrylamide; contacting the methacrylamide with an alcohol in the presence of an inorganic acid in a reactor to obtain an alkyl methacrylate; continuously discharging at least a portion of the alkyl methacrylate from the reactor into a distillation column as a vapor stream; the discharge being effected by feeding a discharge stream comprising steam into the reactor, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable by the process according to the invention in chemical products, and to chemical products based on alkyl methacrylates obtainable by the process according to the invention.

    Abstract translation: 本发明一般涉及制备甲基丙烯酸烷基酯的方法，其包括如下步骤：通过根据前述权利要求之一的方法提供丙酮氰醇; 使丙酮氰醇与无机酸接触，得到甲基丙烯酰胺; 使甲基丙烯酰胺与醇在无机酸存在下在反应器中接触，得到甲基丙烯酸烷基酯; 将至少一部分甲基丙烯酸烷基酯从反应器连续排出到作为蒸气流的蒸馏塔中; 排放是通过将包含蒸汽的排出物流进入反应器，到制备甲基丙烯酸烷基酯的装置，至少部分地基于甲基丙烯酸烷基酯制备聚合物的方法，使用可通过根据 化学产品中的发明，以及基于通过本发明的方法获得的基于甲基丙烯酸烷基酯的化学产品。

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