专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4031139A Manufacture of cyclohexanone oxime 失效
标题翻译：制造环己酮肟
公开(公告)号：US4031139A
公开(公告)日：1977-06-21
申请号：US652421
申请日：1976-01-26
申请人： Guenther Rapp , Hugo Fuchs , Erwin Thomas
发明人： Guenther Rapp , Hugo Fuchs , Erwin Thomas
IPC分类号： C07D223/08 , C07C67/00 , C07C239/00 , C07C251/46 , C07D201/04 , C07D223/10 , C07C131/04
CPC分类号： C07D201/04
摘要： An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improvement consisting in that the reaction is carried out in the absence of solvents and neutralizing and/or buffer salts at pHs of up to 0.5 until equilibrium is reached, the oximes resulting during the reaction being separated from the aqueous phase and the aqueous phase being extracted with cyclohexanone and then subjected to steam distillation.
摘要翻译：通过逆流法在环己酮肟的熔点以上的温度下使环己酮与羟基铵 - 硫酸铵水溶液反应制备环己酮肟的改进方法，其改进在于反应在不存在溶剂的情况下进行，中和和/或缓冲盐的pH值高达0.5，直到达到平衡，反应中产生的肟与水相分离，水相用环己酮萃取，然后进行蒸汽蒸馏。

2. 发明授权

US4340575A Manufacture of hydroxylammonium salts 失效
标题翻译：羟基铵盐的制造
公开(公告)号：US4340575A
公开(公告)日：1982-07-20
申请号：US942658
申请日：1978-09-15
申请人： Guenther Rapp , Kurt Jockers , Erwin Thomas
发明人： Guenther Rapp , Kurt Jockers , Erwin Thomas
IPC分类号： B01J23/00 , C01B21/14 , C22C38/50 , C01B21/20
CPC分类号： C01B21/1418
摘要： Hydroxylammonium salts are manufactured by a process comprising the catalytic reduction of nitric oxide with hydrogen in a dilute aqueous mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, wherein the reaction is carried out in vessels of which the walls consist of conventional copper-free molybdenum-containing austenitic chromium-nickel steels which contain from 16 to 28% by weight of chromium, from 20 to 50% by weight of nickel, from 1 to 4% by weight of molybdenum and at most 0.1% by weight of carbon and which in addition contain an amount of titanium which is at least 5 times the amount of carbon but is not more than 1.0% by weight, or an amount of niobium or tantalum which is at least 8 times the amount of carbon but is not more than 1.5% by weight.The present invention relates to a process for the manufacture of of hydroxylammonium salts by catalytically reducing nitric oxide with hydrogen in a dilute aqueous mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, using corrosion-resistant materials of construction.
摘要翻译：羟基铵盐通过包括在悬浮铂催化剂的存在下在升高的温度下在稀的无机酸水溶液中用氢气催化还原一氧化氮的方法制备，其中反应在其中由壁组成的容器中进行，其常规含铬16至28重量％的铬，20至50重量％的镍，1至4重量％的钼和至多0.1重量％的不含铜的含钼奥氏体铬镍钢。碳，并且还含有一定量的钛，其量为碳的量的至少5倍但不大于1.0重量％，或至少为碳量的8倍但不是碳的量的铌或钽的量超过1.5重量％。本发明涉及通过使用耐腐蚀材料的结构在高温下在悬浮铂催化剂存在下，在稀无机酸水溶液中用氢催化还原一氧化氮的方法。

3. 发明授权

US4457906A Preparation of hydroxylammonium salts 失效
标题翻译：羟基铵盐的制备
公开(公告)号：US4457906A
公开(公告)日：1984-07-03
申请号：US399209
申请日：1982-07-19
申请人： Otto-Alfred Grosskinsky , Elmar Frommer , Guenther Rapp , Erwin Thomas
发明人： Otto-Alfred Grosskinsky , Elmar Frommer , Guenther Rapp , Erwin Thomas
IPC分类号： C07C239/08 , B01J23/42 , C01B21/14 , C07C67/00 , C07C239/00
CPC分类号： C01B21/1418
摘要： Hydroxylammonium salts are prepared by an improved process, wherein nitric oxide is reduced catalytically with hydrogen in a dilute aqueous solution of a mineral acid in the presence of a suspended supported platinum catalyst and at elevated temperatures, and wherein the improvement comprises avoiding the formation of foam at the surface of the reaction mixture.
摘要翻译：羟基铵盐通过改进的方法制备，其中一氧化氮在悬浮的负载型铂催化剂存在下和在升高的温度下在无机酸的稀水溶液中用氢催化还原，其中改进包括避免形成泡沫在反应混合物的表面。

4. 发明授权

US4192856A Manufacture of hydroxylammonium salts 失效
标题翻译：羟基铵盐的制造
公开(公告)号：US4192856A
公开(公告)日：1980-03-11
申请号：US932636
申请日：1978-08-10
申请人： Guenther Rapp , Erwin Thomas , Dieter Wolf , Kuerten, Heribert , Peter Zehner
发明人： Guenther Rapp , Erwin Thomas , Dieter Wolf , Kuerten, Heribert , Peter Zehner
IPC分类号： B01J10/00 , B01J19/24 , B01J19/26 , B01J23/00 , C01B21/14
CPC分类号： C01B21/1418 , B01J19/2465 , B01J19/26 , B01J2219/00103 , B01J2219/0011 , B01J2219/00777
摘要： Hydroxylammonium salts are manufactured by a process comprising the catalytic reduction of nitric oxide with hydrogen in a dilute aqueous solution of a mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, wherein the reaction mixture is recycled and the gas mixture, containing nitric oxide and hydrogen, present in the gas space above the reaction zone, is introduced, by means of one or more downwardly directed jets of liquid, consisting of the recycled reaction mixture and issuing from a nozzle orifice, into one or more circulation zones which are present in the reaction zone, are open at both sides, extend in the direction of the entering jet of liquid and are completely covered by the reaction mixture, the reaction mixture leaving the bottom of the circulation zone and containing unconverted gases is deflected, passed upwards in the annular zone externally surrounding the circulation zone, and at the same time reaction mixture of low gas content is recycled from a separation zone located under the reaction zone.
摘要翻译：羟基铵盐通过包括在悬浮的铂催化剂的存在下在升高的温度下在无机酸的稀的水溶液中用氢催化还原一氧化氮的方法制备，其中反应混合物被再循环，并且含有存在于反应区上方的气体空间中的一氧化氮和氢气通过一个或多个向下定向的液体喷射引入，由再循环的反应混合物组成并从喷嘴孔排出到一个或多个循环区存在于反应区中，在两侧开放，沿着进入的液体射流的方向延伸并被反应混合物完全覆盖，离开循环区底部并含有未转化气体的反应混合物偏转，通过向上在循环区域外部的环形区域中，同时反应混合低气体量i 从位于反应区下方的分离区回收。

5. 发明授权

US4438084A Manufacture of hydroxylammonium salts 失效
标题翻译：羟基铵盐的制造
公开(公告)号：US4438084A
公开(公告)日：1984-03-20
申请号：US450581
申请日：1982-12-17
申请人： Guenther Rapp , Erwin Thomas , Rolf Muenster
发明人： Guenther Rapp , Erwin Thomas , Rolf Muenster
IPC分类号： C22C38/00 , B01J23/00 , C01B17/45 , C01B21/14 , C22C30/00 , C22C38/44 , C01B21/20
CPC分类号： C22C30/00 , C01B21/1418
摘要： Hydroxylammonium salts are manufactured by a process comprising the catalytic reduction of nitric oxide with hydrogen in a dilute aqueous mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, wherein the reaction is carried out in vessels of which the walls consist essentially of conventional copper-free molybdenum-containing austenitic chromium-nickel steels which contain from 16 to 28% by weight of chromium, from 10 to 50% by weight of nickel, from 1 to 4% by weight of molybdenum and at most 0.05% by weight of carbon, together with at least 0.05% by weight of nitrogen up to 0.5% by weight.
摘要翻译：羟基铵盐通过包括在悬浮铂催化剂的升高的温度存在下在稀的无机酸水溶液中用氢气催化还原一氧化氮的方法制备，其中反应在其壁基本上由含有16至28重量％铬，10至50重量％镍，1至4重量％钼和至多0.05重量％的常规无铜含钼奥氏体铬镍钢的碳，以及至多0.05重量％的氮至多0.5重量％。

6. 发明授权

US4061677A Partial dehydration of cyclohexanone oxime 失效
标题翻译：环己酮肟部分脱水
公开(公告)号：US4061677A
公开(公告)日：1977-12-06
申请号：US700541
申请日：1976-06-28
申请人： Kurt Kahr , Hanns Pohl , Guenther Rapp , Peter Lauz
发明人： Kurt Kahr , Hanns Pohl , Guenther Rapp , Peter Lauz
IPC分类号： C07C131/04
摘要： The application relates to a process for partial dehydration of cyclohexanone oxime by treatment with an aqueous solution of an inorganic salt, the crude cyclohexanone oxime being extracted at above its melting point countercurrently in an extraction column with a concentrated solution of ammonium or/and hydroxylammonium salt. The salt solution may be used again after concentration. This may be effected by simple evaporation.
摘要翻译：本申请涉及通过用无机盐水溶液处理来部分脱水环己酮肟的方法，该粗环己酮肟在萃取塔中以高于其熔点的方式提取，用铵或/和铵盐的浓溶液。浓缩后可以再次使用盐溶液。这可以通过简单的蒸发来实现。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式