利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

35 条记录 (耗时 0.019 秒)

    Method of continuously producing .gamma.-butyrolactams
    1.
    发明授权
    Method of continuously producing .gamma.-butyrolactams 失效
    连续生产{65-丁内酰胺的方法

    公开(公告)号：US3975400A

    公开(公告)日：1976-08-17

    申请号：US334398

    申请日：1973-02-21

    申请人： Walter Himmele ,  Ernst Hofmann ,  Herwig Hoffmann ,  Reinhold Plass

    发明人： Walter Himmele ,  Ernst Hofmann ,  Herwig Hoffmann ,  Reinhold Plass

    IPC分类号： C07D207/26 ,  C07D207/267

    CPC分类号： C07D207/267

    摘要： Method of producing .gamma.-butyrolactams by reacting .gamma.-butyrolactones with ammonia in the presence or absence of water at elevated temperatures and pressures. The reaction is carried out continuously at temperatures ranging from 180.degree. to 340.degree.C whilst maintaining pressures which are at least 10 percent higher than the pressure equal to the sum of the partial pressures of the reactants at the temperature used. .gamma.-Butyrolactams are valuable intermediates, for example in the manufacture of polymers, pharmaceuticals and solvents.

    摘要翻译： 在高温和高压下，在存在或不存在水的情况下，使γ-丁内酯与氨反应制备γ-丁内酰胺的方法。 反应在180℃至340℃的温度下连续进行，同时保持比在所用温度下等于反应物分压之和的压力至少高10％的压力。 γ-丁内酰胺是有价值的中间体，例如在聚合物，药物和溶剂的制备中。

    Continuous hydroformylation of olefinically unsaturated compounds
    6.
    发明授权
    Continuous hydroformylation of olefinically unsaturated compounds 失效
    烯属不饱和化合物的连续加氢甲酰化

    公开(公告)号：US4778929A

    公开(公告)日：1988-10-18

    申请号：US70963

    申请日：1987-07-08

    申请人： Peter Zehner ,  Herwig Hoffmann ,  Wolfgang Richter ,  Dieter Stuetzer ,  Max Strohmeyer ,  Helmut Walz ,  Erich Weippert

    发明人： Peter Zehner ,  Herwig Hoffmann ,  Wolfgang Richter ,  Dieter Stuetzer ,  Max Strohmeyer ,  Helmut Walz ,  Erich Weippert

    IPC分类号： C07B61/00 ,  B01J31/00 ,  C07C45/00 ,  C07C45/50 ,  C07C47/02 ,  C07C67/00

    CPC分类号： C07C45/50

    摘要： Olefinically unsaturated compounds are hydroformylated continuously, the olefin being passed into the lower region of the reactor, under from 1 to 40 bar and at from 50.degree. to 140.degree. C. with the aid of a rhodium complex as a catalyst in a hydroformylation reactor having a liquid reaction zone which occupies about 60-85% of the reactor volume, the gaseous products and reactants being removed from the hydroformylation reactor, the products being isolated and the major part of the remaining gas being recycled to the reactor by the cycle gas method, by a process in which from 20 to 80% by volume of the cycle gas is fed into the hydroformylation reactor above the liquid reaction zone and/or below the liquid surface in the top fourth of the liquid reaction zone.

    摘要翻译： 烯化不饱和化合物连续加氢甲酰化，在加氢甲酰化反应器中借助于铑络合物作为催化剂，将烯烃在1至40巴和50至140℃下进入反应器的下部区域， 占反应器体积约60-85％的液体反应区，气态产物和反应物从加氢甲酰化反应器中除去，产物被分离，剩余气体的主要部分通过循环气体法再循环到反应器 ，其中循环气体的20至80体积％被输入到液体反应区上方的加氢甲酰化反应器和/或液体反应区顶部第四个液体表面下方的流程。

    Continuous preparation of furmamide
    7.
    发明授权
    Continuous preparation of furmamide 失效
    连续制备呋喃胺

    公开(公告)号：US4659866A

    公开(公告)日：1987-04-21

    申请号：US347578

    申请日：1982-02-10

    申请人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Otto Kratzer

    发明人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Otto Kratzer

    IPC分类号： C07C231/02 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C233/03 ,  C07C102/06

    CPC分类号： C07C231/02

    摘要： Formamide is prepared continuously from methyl formate and ammonia, pure methanol being recovered, by a process wherein(a) the reaction of methyl formate and ammonia is carried out predominantly in the liquid phase in the upper region of a reaction column R having a total of from 15 to 30 theoretical plates,(b) the methanol formed in this reaction is removed, together with small amounts of formamide, from the column or the evaporator in vaporus form at the level of plates 1-5 (counted from the bottom),(c) the formamide is removed from this methanol/formamide mixture, together with small amounts of methanol, in a distillation column D1 and recycled to R, and(d) the small amounts of methanol contained in the bottom product from R, which substantially consists of formamide and in this column should be at from 110.degree. to 130.degree. C., are separated off in a distillation column D2.

    摘要翻译： 甲酸甲酯由甲酸甲酯和氨，回收的纯甲醇连续制备，其中（a）甲酸甲酯和氨的反应主要在反应塔R的上部区域的液相中进行，其总共具有 从15到30个理论塔板，（b）将该反应中形成的甲醇与少量甲酰胺一起从塔或蒸发器以蒸汽形式在板1-5的水平（从底部计数）中除去， （c）将甲酰胺与蒸馏塔D1中的少量甲醇一起从该甲醇/甲酰胺混合物中除去并再循环至R，和（d）从R中的底部产物中含有的少量甲醇，其基本上 由甲酰胺组成，该柱应在110℃至130℃，在蒸馏塔D2中分离。

    Manufacture of butynediol
    8.
    发明授权
    Manufacture of butynediol 失效
    丁炔二醇的制造

    公开(公告)号：US4067914A

    公开(公告)日：1978-01-10

    申请号：US671384

    申请日：1976-03-29

    申请人： Wolfgang Reiss ,  Siegfried Winderl ,  Wolfgang Schroeder ,  Herwig Hoffmann

    发明人： Wolfgang Reiss ,  Siegfried Winderl ,  Wolfgang Schroeder ,  Herwig Hoffmann

    IPC分类号： C07C29/42 ,  B01J31/00 ,  C07B61/00 ,  C07C27/00 ,  C07C33/046 ,  C07C67/00 ,  C07C29/00

    CPC分类号： C07C33/046

    摘要： In a process for the manufacture of butynediol by the reaction of formaldehyde and acetylene in aqueous solution, in which a catalyst is used which is produced by the action of acetylene and formaldehyde on copper (II) compounds, the catalyst becomes inactive when it is treated for a relatively long period with formaldehyde at elevated temperature in the absence of acetylene so that it must constantly remain in contact with acetylene-containing solution if its temperature is above 70.degree. C.

    摘要翻译： 在通过甲醛和乙炔在水溶液中反应制造丁炔二醇的方法中，其中使用通过乙炔和甲醛作用于铜（II）化合物而产生的催化剂，当处理时催化剂变得不活动 在不存在乙炔的情况下，甲醛在高温下持续相当长的时间，如果其温度高于70℃，则必须与乙炔溶液一直保持接触。