公开(公告)号：US20060129000A1

公开(公告)日：2006-06-15

申请号：US11302290

申请日：2005-12-13

申请人： Matthias Goring ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Karl-Friedrich Muck

发明人： Matthias Goring ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Karl-Friedrich Muck

IPC分类号： C07C43/30 ,  C07C43/32

CPC分类号： C07C41/56 ,  C07C41/58 ,  Y02P20/127 ,  C07C43/303

摘要： A process for preparing acetals from aldehydes and alcohols is carried out by generating a reaction/distillation zone charged with an acidic fixed bed catalyst in a distillation column, feeding the aldehyde and the alcohol to the reaction/distillatlon zone and at least partly converting them to the acetal, heating the column bottom disposed below the reaction/distillation zone in order to at least partly evaporate the bottom's mixture and to establish a defined temperature in the reaction/distillation zone, feeding an extractant into a rectifying section of the column, disposed above the reaction/distillation zone and condensing a product having more than 90% by weight of acetal at the top of the column.

公开(公告)号：US20060058537A1

公开(公告)日：2006-03-16

申请号：US10538787

申请日：2003-12-12

申请人： Michael Haubs ,  Matthias Goring ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Karl-Friedrich Muck

发明人： Michael Haubs ,  Matthias Goring ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Karl-Friedrich Muck

IPC分类号： C07D323/06

CPC分类号： C07D323/06

摘要： The invention relates to a process for preparing trioxane from aqueous formaldehyde solutions in the presence of acidic catalysts. The reaction of the formaldehyde to give trioxane takes place in a reaction column equipped with a circulation evaporator, and the formaldehyde solution used as the starting solution is mixed with a sidestream from the bottom of the reaction column and fed to the upper section of the reaction column via a tubular reactor. The process is notable for a low energy requirement and little by-product formation.

摘要翻译： 本发明涉及一种在酸性催化剂存在下由甲醛水溶液制备三恶烷的方法。 甲醛与三氧杂环己烷的反应在装有循环蒸发器的反应塔中进行，用作起始溶液的甲醛溶液与反应塔底部的侧流混合，并进料至反应的上部 柱通过管式反应器。 该过程对于低能量需求和小的副产物形成是显着的。

公开(公告)号：US20080272052A1

公开(公告)日：2008-11-06

申请号：US11665028

申请日：2005-10-06

申请人： Reinhard Wagener ,  Michael Haubs ,  Juergen Lingnau ,  Matthias Goring ,  Michael Hoffmockel

发明人： Reinhard Wagener ,  Michael Haubs ,  Juergen Lingnau ,  Matthias Goring ,  Michael Hoffmockel

IPC分类号： B01D61/36 ,  C07D317/12

CPC分类号： B01D61/362 ,  B01D53/22 ,  C07D317/12

摘要： Processes are described which comprise: (a) providing a mixture comprising a cyclic formal and water, wherein the mixture has a cyclic formal concentration and a water concentration; (b) bringing the mixture into contact with an organically selective membrane; (c) creating a pressure differential across the membrane; and (d) obtaining a permeate having a lower water concentration and a higher cyclic formal concentration than the mixture, and a retentate having a higher water concentration and a lower cyclic formal concentration than the mixture.

摘要翻译： 描述了方法，其包括：（a）提供包含环状缩甲醛和水的混合物，其中所述混合物具有环形形式浓度和水浓度; （b）使混合物与有机选择性膜接触; （c）跨过膜产生压力差; 和（d）获得具有比混合物低的水浓度和较高的环状甲醛浓度的渗透物，以及具有比混合物更高的水浓度和更低的环状甲醛浓度的渗余物。