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19 条记录 (耗时 0.029 秒)

    METHOD FOR AMIDATING OF NITRILE IN THE PRESENCE OF SULFURIC ACID
    6.
    发明申请
    METHOD FOR AMIDATING OF NITRILE IN THE PRESENCE OF SULFURIC ACID 审中-公开
    硫酸存在下氮化物的吸附方法

    公开(公告)号：US20100249449A1

    公开(公告)日：2010-09-30

    申请号：US12738094

    申请日：2008-08-15

    申请人： Lorenza Sartorelli ,  Andreas Perl ,  Udo Gropp ,  Arndt Selbach

    发明人： Lorenza Sartorelli ,  Andreas Perl ,  Udo Gropp ,  Arndt Selbach

    IPC分类号： C07C231/06 ,  C07C67/22

    CPC分类号： C07C231/06 ,  C07C67/20 ,  C07C69/54 ,  C07C233/09

    摘要： The present invention relates to a process for preparing carboxamides by amidating nitriles in the presence of sulphuric acid, wherein the reaction is performed in a Taylor reactor. The process enables a simple and inexpensive preparation of these compounds. The present invention further provides processes for preparing (meth)acrylamides and alkyl(meth)acrylates, which comprise an inventive amidation reaction.

    摘要翻译： 本发明涉及通过在硫酸存在下酰胺化酰胺制备羧酰胺的方法，其中反应在泰勒反应器中进行。 该方法能够简单且廉价地制备这些化合物。 本发明还提供制备（甲基）丙烯酰胺和（甲基）丙烯酸烷基酯的方法，其包含本发明的酰胺化反应。

    Method for the adsorptive purification of alkyl methacrylates
    7.
    发明授权
    Method for the adsorptive purification of alkyl methacrylates 有权
    甲基丙烯酸烷基酯吸附纯化方法

    公开(公告)号：US08324424B2

    公开(公告)日：2012-12-04

    申请号：US12517199

    申请日：2007-08-31

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

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

    IPC分类号： C07C67/56 ,  C07C69/54 ,  C07C67/20

    CPC分类号： C07C67/20 ,  C07C67/56 ,  C07C69/54

    摘要： The invention relates in general terms to a process for preparing to a process for purifying an alkyl methacrylate, comprising the steps of: A. providing an alkyl methacrylate with an impurity: B. adsorbing at least some of the impurity onto a purifying solid to obtain an ultrapure alkyl methacrylate, to a process for preparing an ultrapure alkyl methacrylate, to an apparatus for preparing alkyl methacrylates, to a process for preparing a polymer based at least partly on alkyl methacrylates, to the use of an alkyl methacrylate obtained according to the invention in chemical products, and to chemical products comprising an alkyl methacrylate obtained according to the invention.

    摘要翻译： 本发明一般涉及一种制备甲基丙烯酸烷基酯纯化方法的方法，包括以下步骤：A.提​​供具有杂质的甲基丙烯酸烷基酯：将至少一些杂质吸附到纯化固体上以获得 超临界甲基丙烯酸烷基酯，用于制备超纯甲基丙烯酸烷基酯的方法，用于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，使用根据本发明获得的甲基丙烯酸烷基酯 化学产品，以及包含根据本发明获得的甲基丙烯酸烷基酯的化学产品。

    Production by distillation of acetone cyanhydrin and method for producing methacrylic ester and subsequent products
    8.
    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

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

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

    IPC分类号： C07C253/00

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

    摘要： 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.

    摘要翻译： 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
    10.
    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

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

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

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

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

    摘要： 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.

    摘要翻译： 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。