利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

124 条记录 (耗时 0.052 秒)

    Method for producing ethylenediamine
    51.
    发明授权
    Method for producing ethylenediamine 有权
    乙二胺的制备方法

    公开(公告)号：US07915454B2

    公开(公告)日：2011-03-29

    申请号：US12529107

    申请日：2008-02-28

    申请人： Alfred Oftring ,  Kirsten Dahmen ,  Randolf Hugo ,  Thilo Hahn ,  Katrin Baumann ,  Johann-Peter Melder

    发明人： Alfred Oftring ,  Kirsten Dahmen ,  Randolf Hugo ,  Thilo Hahn ,  Katrin Baumann ,  Johann-Peter Melder

    IPC分类号： C07C209/48

    CPC分类号： C07C209/48 ,  C07C211/10

    摘要： The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.

    摘要翻译： 本发明涉及一种通过氨基乙腈在催化剂上氢化制备乙二胺的方法，其中氢化是在包含氨基乙腈的溶液中，以0至60重量％的比例的水和溶剂和包含在其中的氨基乙腈 溶液以不大于氨基乙腈在氢化中与氢反应的速率进料到反应容器中。

    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content
    53.
    发明授权
    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content 有权
    具有低副产物含量的甲基甘氨酸-N，N-二乙酸 - 三烷基金属盐的制备方法

    公开(公告)号：US07671234B2

    公开(公告)日：2010-03-02

    申请号：US11913597

    申请日：2006-05-02

    申请人： Alfred Oftring ,  Gerold Braun ,  Friedrich Wirsing ,  Armin Stamm ,  Kai-Uwe Baldenius

    发明人： Alfred Oftring ,  Gerold Braun ,  Friedrich Wirsing ,  Armin Stamm ,  Kai-Uwe Baldenius

    IPC分类号： C07C227/26 ,  C07C229/16

    CPC分类号： C07C227/26 ,  C07C229/16

    摘要： The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    摘要翻译： 本发明涉及通过甲基甘氨二乙腈（MGDN）的碱水解制备低副产物，浅色甲基甘氨酸-N，N-二乙酸三（碱金属）盐的方法，包括步骤（a）至 （f）：（a）在温度为30℃的温度下，将MGDN与碱水溶液混合; （b）使含水碱性MGDN悬浮液在10至30℃的温度下反应0.1至10小时以形成溶液; （c）允许来自步骤（b）的溶液在0.1至10小时的时间内在30至40℃的温度下反应; （d）任选地允许步骤（c）的溶液在0.5至2小时的时间内在50至80℃的温度下反应; （e）任选地允许来自步骤（c）或（d）的溶液在110至200℃的温度下在5至60分钟的时间内反应; （f）通过在90至105℃的温度下汽提来水解和除去在步骤（c），（d）或（e）中获得的溶液中的氨。

    Method For Producing Methylglycine-N,N-Diethanoic Acid-Trialkali Metal Salts With A Low By-Product Content
    56.
    发明申请
    Method For Producing Methylglycine-N,N-Diethanoic Acid-Trialkali Metal Salts With A Low By-Product Content 有权
    生产含有低副产物含量的甲基甘氨酸-N，N-二氢化萘 - 三碱金属盐的方法

    公开(公告)号：US20080194873A1

    公开(公告)日：2008-08-14

    申请号：US11913597

    申请日：2006-05-02

    申请人： Alfred Oftring ,  Gerold Braun ,  Friedrich Wirsing ,  Armin Stamm ,  Kai-Uwe Baldenius

    发明人： Alfred Oftring ,  Gerold Braun ,  Friedrich Wirsing ,  Armin Stamm ,  Kai-Uwe Baldenius

    IPC分类号： C07C229/24

    CPC分类号： C07C227/26 ,  C07C229/16

    摘要： The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    摘要翻译： 本发明涉及通过甲基甘氨二乙腈（MGDN）的碱水解制备低副产物，浅色甲基甘氨酸-N，N-二乙酸三（碱金属）盐的方法，包括步骤（a）至 （f）：（a）在<= 30℃的温度下将MGDN与碱水溶液混合; （b）使含水碱性MGDN悬浮液在10至30℃的温度下反应0.1至10小时以形成溶液; （c）允许来自步骤（b）的溶液在0.1至10小时的时间内在30至40℃的温度下反应; （d）任选地允许步骤（c）的溶液在0.5至2小时的时间内在50至80℃的温度下反应; （e）任选地允许来自步骤（c）或（d）的溶液在110至200℃的温度下在5至60分钟的时间内反应; （f）通过在90至105℃的温度下汽提来水解和除去在步骤（c），（d）或（e）中获得的溶液中的氨。

    Neutralization of isophorone nitrile synthesis products
    59.
    发明申请
    Neutralization of isophorone nitrile synthesis products 失效
    异佛尔酮腈合成产物的中和

    公开(公告)号：US20060058544A1

    公开(公告)日：2006-03-16

    申请号：US10539134

    申请日：2003-12-16

    申请人： Alfred Oftring ,  Gerold Braun

    发明人： Alfred Oftring ,  Gerold Braun

    IPC分类号： C07C253/08

    CPC分类号： C07C253/10 ,  C07C2601/14 ,  C07C255/46

    摘要： The present invention relates to a process for preparing 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst to obtain a crude isophoronenitrile product, and subsequently distilling the crude isophoronenitrile product, with the addition before distillation of at least one specific sulfonic acid or specific carboxylic acid. In addition, the present invention relates to the use of a specific sulfonic acid or of a specific carboxylic acid as a neutralizing agent before distillation of a crude isophoronenitrile product which has been obtained by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst, in order to avoid precipitates in the neutralization of the base used as a catalyst with an acid.

    摘要翻译： 本发明涉及一种在碱作催化剂存在下使异佛尔酮与氰化氢反应来制备3-氰基-3,5,5-三甲基环己酮（异佛尔酮）的方法，得到粗异烟酰腈产物，然后蒸馏粗产物 异佛尔酮腈产物，在蒸馏前加入至少一种特定的磺酸或特定的羧酸。 此外，本发明涉及在蒸馏前的异丙醇腈产物时使用特定的磺酸或特定羧酸作为中和剂，所述产物是通过在碱存在下将异佛尔酮与氰化氢反应而得到的 催化剂，以避免在用酸作为催化剂的碱的中和中沉淀。