公开(公告)号：US20050256343A1

公开(公告)日：2005-11-17

申请号：US10520725

申请日：2003-07-09

申请人： Eric Fache ,  Sebastien Righini

发明人： Eric Fache ,  Sebastien Righini

IPC分类号： C07C201/12 ,  C07C21/12 ,  C07C201/16 ,  C07C205/22

CPC分类号： C07C201/16 ,  C07C205/22

摘要： The invention relates to a method of preparing a high-purity nitrophenol and, more specifically, p-nitrophenol from a nitrohalobenzene. The inventive method comprises the following steps: (a) hydrolysis of a nitrohalobenzene compound by reacting said compound with a base; (b) acidification in order to produce the nitrophenol compound from the salt thereof by means of an acid treatment; (c) crystallisation of the nitrophenol compound obtained; and (d) separation of the product obtained. The invention is characterised in that it also comprises at least the following steps: (e) concentration of the reaction medium after hydrolysis (a) and before acidification (b); and (f) liquid/liquid decantation after acidification (b) and before crystallisation (c), which is intended to eliminate the water phase obtained after acidification (b).

摘要翻译： 本发明涉及一种从硝基卤苯制备高纯度硝基苯酚，更具体地说是对硝基苯酚的方法。 本发明的方法包括以下步骤：（a）通过使所述化合物与碱反应来水解硝基卤苯化合物; （b）酸化以通过酸处理从其盐生产硝基苯酚化合物; （c）获得的硝基苯酚化合物的结晶; 和（d）所得产物的分离。 本发明的特征在于其还包括至少以下步骤：（e）水解（a）和酸化（b）之前浓缩反应介质; 和（f）在酸化（b）和结晶（c）之前的液体/液体倾析，其旨在消除酸化后获得的水相（b）。

公开(公告)号：US20080045756A1

公开(公告)日：2008-02-21

申请号：US11898745

申请日：2007-09-14

申请人： Erie Fache ,  Sebastien Righini

发明人： Erie Fache ,  Sebastien Righini

IPC分类号： C07C205/06

CPC分类号： C07C201/16 ,  C07C205/22

摘要： The invention relates to a method of preparing a high-purity nitrophenol and, more specifically, p-nitrophenol from a nitrohalobenzene. The inventive method comprises the following steps: (a) hydrolysis of a nitrohalobenzene compound by reacting said compound with a base; (b) acidification in order to produce the nitrophenol compound from the salt thereof by means of an acid treatment; (c) crystallisation of the nitrophenol compound obtained; and (d) separation of the product obtained. The invention is characterised in that it also comprises at least the following steps: (e) concentration of the reaction medium after hydrolysis (a) and before acidification (b); and (f) liquid/liquid decantation after acidification (b) and before crystallisation (c), which is intended to eliminate the water phase obtained after acidification (b).

摘要翻译： 本发明涉及一种从硝基卤苯制备高纯度硝基苯酚，更具体地说是对硝基苯酚的方法。 本发明的方法包括以下步骤：（a）通过使所述化合物与碱反应来水解硝基卤苯化合物; （b）酸化以通过酸处理从其盐生产硝基苯酚化合物; （c）获得的硝基苯酚化合物的结晶; 和（d）所得产物的分离。 本发明的特征在于其还包括至少以下步骤：（e）水解（a）和酸化（b）之前浓缩反应介质; 和（f）在酸化（b）和结晶（c）之前的液体/液体倾析，其旨在消除酸化后获得的水相（b）。

公开(公告)号：US20090306425A1

公开(公告)日：2009-12-10

申请号：US11922333

申请日：2006-06-09

申请人： Didier Bonnet ,  Romain Petroff Saint-Arroma ,  Sebastien Righini ,  Tania Ireland ,  Jean-Pierre Simonato

发明人： Didier Bonnet ,  Romain Petroff Saint-Arroma ,  Sebastien Righini ,  Tania Ireland ,  Jean-Pierre Simonato

IPC分类号： C07C51/21

CPC分类号： C07C51/215 ,  C07C51/235 ,  C07C51/43 ,  C07C51/48 ,  C07C55/14 ,  C07C59/105

摘要： A process for the production of carboxylic acids by oxidation of a hydrocarbon by oxygen or a gas containing oxygen and notably to the oxidation of cyclohexane to give adipic acid; the subject process entails a stage of oxidation of the hydrocarbon and at least one stage for extracting the dicarboxylic acids formed from the reaction medium and optionally recycling the unconverted hydrocarbon with oxidation by-products, such as alcohols and ketones, and which also includes a stage of conversion, removal or extraction of the α,ω-hydroxycarboxylic compounds formed during the oxidation stage and converting these compounds into diacids.

摘要翻译： 通过氧气或含氧气体特别是氧化环己烷以产生己二酸来生产羧酸的方法; 本发明方法需要一个阶段的烃和至少一个阶段，用于萃取由反应介质形成的二羧酸，并任选地将未转化的烃与氧化副产物如醇和酮再循环，并且还包括一个阶段 转化，去除或提取在氧化阶段期间形成的α，ω-羟基羧酸化合物并将这些化合物转化为二酸。