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    Method for purifying caprolactam
    14.
    发明申请
    Method for purifying caprolactam 有权
    己内酰胺纯化方法

    公开(公告)号：US20060041122A1

    公开(公告)日：2006-02-23

    申请号：US10534802

    申请日：2003-11-11

    Applicant: Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Andreas Ansmann ,  Peter Babler ,  Christoph Benisch ,  Stefan Maixner ,  Johann-Peter Melder

    Inventor： Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Andreas Ansmann ,  Peter Babler ,  Christoph Benisch ,  Stefan Maixner ,  Johann-Peter Melder

    IPC: C07D201/16

    CPC classification number: C07D201/16 ,  C07D201/08

    Abstract: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

    Abstract translation: 一种从粗己内酰胺中除去高锅炉的方法，其包括高锅炉，己内酰胺，在某些情况下是低锅炉，并且通过以下方法获得：a）使6-氨基己腈与水反应得到反应混合物; b）除去氨和未转化的水 反应混合物以获得粗己内酰胺，其包括c）将粗己内酰胺加入到蒸馏装置中，通过顶部获得第一子流作为产物，通过底部通过设置第二子流，通过将蒸馏中的压力设定为使得 底部温度不低于170℃，并且调节第二子流，使得第二子流的己内酰胺含量基于整个第二子流不小于10重量％。

    Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof
    15.
    发明申请
    Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof 有权
    降低含氨基腈，二胺，二腈或其混合物的混合物中不饱和胺含量的方法

    公开(公告)号：US20050222449A1

    公开(公告)日：2005-10-06

    申请号：US10515281

    申请日：2003-05-21

    Applicant: Stefan Maixner ,  Christoph Benisch ,  Hermann Luyken ,  Peter Bassler ,  Rolf-Hartmuth Fischer ,  Johann-Peter Melder ,  Andreas Ansmann

    Inventor： Stefan Maixner ,  Christoph Benisch ,  Hermann Luyken ,  Peter Bassler ,  Rolf-Hartmuth Fischer ,  Johann-Peter Melder ,  Andreas Ansmann

    IPC: C07C209/84 ,  C07C211/09 ,  C07C211/12 ,  C07C253/34 ,  C07C255/09 ,  C07C255/24

    CPC classification number: C07C253/34 ,  C07C255/24

    Abstract: A process for reducing the level of an aliphatic monounsaturated amine (IV) in a mixture (V) containing an aminonitrile (I) or a diamine (II) or a dinitrile (III) or mixtures thereof as well as said amine (IV) by a) reacting said mixture (V) with an anionic nucleophile (VI) which contains a nucleophilic atom selected from the group consisting of oxygen, nitrogen and sulfur, which is capable of taking up an H+ ion to form an acid having a pKa value in the range from 7 to 11, as measured in water at 25° C., and which has a relative nucleophilicity, as measured in methyl perchlorate/methanol at 25° C., in the range from 3.4 to 4.7 when said nucleophilic atom is oxygen, in the range from 4.5 to 5.8 when said nucleophilic atom is nitrogen, and in the range from 5.5 to 6.8 when said nucleophilic atom is sulfur, in an amount in the range from 0.01 to 10 mol per mole of said amine (IV) in said mixture (V) at a temperature in the range from 50 to 200° C. to obtain a mixture (VII), b) distilling said aminonitrile (I) or said diamine (II) or said dinitrile (III) or mixtures thereof from said mixture (VII) at a temperature in the range from 50 to 200° C. and at a pressure in the range from 0.1 to 100 kPa to obtain a bottom product (VIII), which comprises c) distilling an aminonitrile (I) or diamine (II) or dinitrile (III) or mixtures thereof from said bottom product (VIII) at a temperature which is lower than that chosen in step b).

    Abstract translation: 含有氨基腈（I）或二胺（II）或二腈（III）或其混合物以及所述胺（IV）的混合物（V）中的脂肪族单不饱和胺（IV）的水平以及所述胺（IV） a）使所述混合物（V）与含有选自氧，氮和硫的亲核原子的阴离子亲核试剂（VI）反应，其能够吸收H + 形成在25℃下在水中测量的具有7至11的pK值的酸，其在25℃下在高氯酸甲酯/甲醇中测得的具有相对亲核性 当所述亲核原子为氧时，在3.4至4.7的范围内，当所述亲核原子为氮时，在4.5至5.8的范围内，当所述亲核原子为硫时在5.5至6.8的范围内，其量为 在所述混合物（V）中，在50至200℃的温度范围内每摩尔所述胺（IV）为0.01至10摩尔的范围，以获得混合物 （VII）中，b）在50至200℃的温度下，从所述混合物（VII）中蒸馏所述氨基腈（I）或所述二胺（II）或所述二腈（III）或其混合物， 压力为0.1至100kPa，以获得底部产物（VIII），其包括c）在所述底部产物（VIII）中蒸馏氨基腈（I）或二胺（II）或二腈（III）或其混合物， 温度低于步骤b）中选择的温度。

    Preparation of cyclic lactams
    18.
    发明授权
    Preparation of cyclic lactams 有权
    制备环状内酰胺

    公开(公告)号：US06683178B2

    公开(公告)日：2004-01-27

    申请号：US10257877

    申请日：2002-10-17

    Applicant: Frank Ohlbach ,  Andreas Ansmann ,  Peter Bassler ,  Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Stefan Maixner ,  Johann-Peter Melder

    Inventor： Frank Ohlbach ,  Andreas Ansmann ,  Peter Bassler ,  Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Stefan Maixner ,  Johann-Peter Melder

    IPC: C07D20108

    CPC classification number: C07D201/08 ,  C07D201/16

    Abstract: The invention relates to a method for producing cyclic lactams of formula (II) by reacting a compound (I) of formula (I) with water in the presence of an organic, liquid dilution agent in the liquid phase. In formula (II), n and m respectively can have the values 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of n+m is at least 3, preferably at least 4 and R1 and R2 represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups. In formula (I), R1, R2, m and n are defined as above and R represents nitrile, carboxylic acid amide and carboxylic acid groups. The inventive method is characterized in that a) compound (I) is reacted with water in the liquid phase in the presence of an organic, liquid dilution agent (III) to form a mixture (IV) containing a lactam (II) and said mixture (IV) is subjected to an aqueous treatment to obtain a two-phase system.

    Abstract translation: 本发明涉及在液相中有机液体稀释剂存在下使式（I）化合物（I）与水反应制备式（II）的环状内酰胺的方法。 在式（II）中，n和m分别具有0,1,2,3,4,5,6,7,8和9的值，并且n + m的和至少为3，优选至少为4，并且 R 1和R 2代表C 1 -C 6烷基，C 5 -C 7环烷基或C 6 -C 12芳基。 在式（I）中，R 1，R 2，m和n如上定义，R代表腈，羧酸酰胺和羧酸基团。 本发明的方法的特征在于：a）化合物（I）在液相中在有机液体稀释剂（III）的存在下与水反应，形成含有内酰胺（II）的混合物（IV），所述混合物 （IV）进行水处理以获得两相体系。

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