公开(公告)号：US5874654A

公开(公告)日：1999-02-23

申请号：US934115

申请日：1997-09-19

Applicant: Antoinette Gacon-Camoz ,  Pascal Metivier

Inventor： Antoinette Gacon-Camoz ,  Pascal Metivier

IPC: C07C201/16

CPC classification number: C07C201/16

Abstract: Environmentally-polluting nitrocresol values are removed from admixtures of nitroaromatic compounds comprised thereof, notably the media of nitration of aromatic compounds by reacting same with aqueous HNO.sub.3 /H.sub.2 SO.sub.4, by first intimately contacting such nitroaromatic compound admixtures with an oxidizing agent comprising hydrogen peroxide, javelle water, or mixture thereof, and thereafter with a neutralizing agent; the nitroaromatic aromatic compounds thus purified are conveniently catalytically hydrogenated into aromatic amines.

Abstract translation: 通过首先使这种硝基芳族化合物外加剂与包含过氧化氢，悬浮液的氧化剂紧密接触，从而与其组成的硝基芳族化合物的混合物，特别是芳族化合物硝化的介质从HNO 3 / H 2 SO 4水溶液中除去环境污染的硝基甲酚值 ，或其混合物，然后用中和剂; 如此纯化的硝基芳族芳族化合物方便地催化氢化成芳族胺。

公开(公告)号：US5756867A

公开(公告)日：1998-05-26

申请号：US529100

申请日：1995-09-15

Applicant: Heinrich Hermann ,  Jurgen Gebauer

Inventor： Heinrich Hermann ,  Jurgen Gebauer

IPC: C07C201/16 ,  C07C205/08

CPC classification number: C07C201/08 ,  C07C201/16

Abstract: A process for the removal and recovery of nitric acid, sulphuric acid and nitrous oxide (NO.sub.x) from crude dinitrotoluene (DNT) obtained by nitrating with a nitrating acid, a benzene derivative selected from the group consisting of tolulene or mononitrotoluene (after separation from the dinitrotoluene from the nitrating acid, wherein the crude dinitrotoluene is extracted in a plurality of steps whereby a dilute aqueous solution of nitric, sulfuric and nitrous acids countercurrently contacts the crude dinitrotoluene, the volume ratio of the dinitrotoluene to the aqueous solution being between 1:3 and 10:1, the extraction steps resulting in the formation of an aqueous extract which is blended directly into the nitrating acid for re-use in the acid nitration of the benzene derivative.

Abstract translation: 通过硝化酸硝化得到的粗二硝基甲苯（DNT）中除去和回收硝酸，硫酸和一氧化二氮（NOx）的方法，选自甲苯或一硝基甲苯的苯衍生物（与 二硝基甲苯，其中粗二硝基甲苯以多个步骤提取，其中硝酸，硫酸和亚硝酸的稀溶液与粗二硝基甲苯逆流接触，二硝基甲苯与水溶液的体积比为1:3 和10：1，提取步骤导致形成水提取物，其直接混合到硝酸中，用于在苯衍生物的酸硝化中再次使用。

公开(公告)号：US5689018A

公开(公告)日：1997-11-18

申请号：US510803

申请日：1995-08-03

Applicant: Uwe Klingler ,  Thomas Schieb ,  Gerhard Wiechers ,  Jurgen Zimmermann

Inventor： Uwe Klingler ,  Thomas Schieb ,  Gerhard Wiechers ,  Jurgen Zimmermann

IPC: C07C201/08 ,  C07C201/16 ,  C07C205/06 ,  C07C205/00

CPC classification number: C07C201/08

Abstract: Dinitrotoluene is produced from toluene and nitric acid in the presence of sulfuric acid in a two stage process in the first stage, toluene and nitric acid are reacted under isothermal conditions in amounts such that mononitrotoluene is produced. The reaction mixture is then separated into an organic phase and an acid phase. The organic phase is then further reacted with nitric acid under adiabatic conditions to produce dinitrotoluene. The reaction mixture is then separated into an organic phase and an acid phase. Dinitrotoluene is recovered from the organic phase. After at least 5% by weight water is removed from the acid phase and sufficient nitric acid to replace that consumed during the nitration reaction has been added, the acid phase may be recycled.

Abstract translation: 二硝基甲苯在甲酸和硝酸的存在下，在第一阶段的两阶段工艺中由甲苯和硝酸制成，甲苯和硝酸在产生单硝基甲苯的条件下在等温条件下反应。 然后将反应混合物分离成有机相和酸相。 然后在绝热条件下，有机相进一步与硝酸反应生成二硝基甲苯。 然后将反应混合物分离成有机相和酸相。 从有机相回收二硝基甲苯。 在从酸相中除去至少5重量％的水后，加入足够的硝酸代替在硝化反应期间消耗的硝酸，可以回收酸相。

公开(公告)号：US5414136A

公开(公告)日：1995-05-09

申请号：US235579

申请日：1994-04-29

Applicant: David A. Cortes

Inventor： David A. Cortes

IPC: C07C201/12 ,  C07C201/16 ,  C07C205/45 ,  C07C225/22 ,  C07C45/65

CPC classification number: C07C201/12 ,  C07C221/00 ,  C07C2101/02

Abstract: The present invention provides a method for the preparation of a 4-halo-2'-nitrobutyrophenone compound having the structural formula I ##STR1## The formula I compound is an important intermediate in the manufacture of a sulfamoyl urea herbicidal agent.

Abstract translation: 本发明提供了制备具有结构式I的4-卤代-2'-硝基苯甲酮化合物的方法（I）式I化合物是制备氨磺酰脲除草剂的重要中间体。

公开(公告)号：US5367104A

公开(公告)日：1994-11-22

申请号：US213923

申请日：1994-03-16

Applicant: Ernst I. Leupold ,  Udo Dettmeier ,  Gustav Gimpel ,  Walter Reimann

Inventor： Ernst I. Leupold ,  Udo Dettmeier ,  Gustav Gimpel ,  Walter Reimann

IPC: B01J39/12 ,  C07B63/02 ,  C07C17/38 ,  C07C201/16 ,  C07C205/11

CPC classification number: B01J39/12 ,  C07B63/02 ,  C07C17/38 ,  C07C201/16

Abstract: Process for the purification of organic compounds contaminated by dissolved metal compounds.The present invention relates to a process for the purification of organic compounds contaminated by dissolved metal compounds, by bringing the contaminated organic compound into contact with an ion exchanger resin, the functional group of which contains both a secondary amine group and a phosphonate salt radical and/or a phosphonic acid radical.

Abstract translation: 纯化被溶解的金属化合物污染的有机化合物的方法。 本发明涉及通过使污染的有机化合物与其官能团含有仲胺基和膦酸盐基团的离子交换树脂接触来净化被溶解的金属化合物污染的有机化合物的方法，以及 /或膦酸基团。

公开(公告)号：US5273627A

公开(公告)日：1993-12-28

申请号：US649269

申请日：1991-01-30

Applicant: Kai Rohlk

Inventor： Kai Rohlk

IPC: C07C17/38 ,  C07C17/386 ,  C07C201/16 ,  B01D3/00

CPC classification number: C07C17/38 ,  C07C17/386 ,  C07C201/16

Abstract: Mixtures containing alkylaromatrics chlorinated in the side chain are worked up by blowing them out with an inert gas before distillation at elevated temperature and carrying out the distillation in the presence of amines and/or chlorinated amines.

Abstract translation: 在侧链中氯化的含有烷基芳香化合物的混合物在高温蒸馏之前用惰性气体吹出并在胺和/或氯化胺的存在下进行蒸馏来处理。

公开(公告)号：US5149882A

公开(公告)日：1992-09-22

申请号：US709855

申请日：1991-06-04

Applicant: Bernd Schaefer ,  Wolfgang Freund ,  Gernot Reissenweber

Inventor： Bernd Schaefer ,  Wolfgang Freund ,  Gernot Reissenweber

IPC: C07C201/16

CPC classification number: C07C201/16

Abstract: 2-chloro-5-nitrobenzaldehyde or an acetal thereof is isolated from a mixture of isomers thereof at a temperature of from -10.degree. to +140.degree. C., by suspending the mixture of isomers in a solvent or solvent mixture.

Abstract translation: 通过将异构体混合物悬浮在溶剂或溶剂混合物中，在-10℃至+ 140℃的温度下从其异构体的混合物中分离2-氯-5-硝基苯甲醛或其缩醛。

公开(公告)号：US5012019A

公开(公告)日：1991-04-30

申请号：US449259

申请日：1990-01-26

Applicant: Robert W. Mason ,  Peter C. Imm ,  Paul J. Craney ,  Thomas W. Offill ,  Robert T. Brooker

Inventor： Robert W. Mason ,  Peter C. Imm ,  Paul J. Craney ,  Thomas W. Offill ,  Robert T. Brooker

IPC: C07C201/16

CPC classification number: C07C201/16

Abstract: The present invention relates to a process for purifying an aromatic nitration product mixture comprising a nitrated aromatic compound, water, and nitric or sulfuric acid which comprises without regard to sequence: (a) removing at least a portion of said water from said product mixture by contacting and reacting said water in said mixture with magnesium nitrate trihydrate to form magnesium nitrate pentahydrate or magnesium nitrate hexahydrate and removing said magnesium nitrate pentahydrate or magnesium nitrate hexahydrate from said nitrated aromatic compound in said product mixture, and (b) removing at least a portion of said acid from said product mixture by contacting and reacting said acid with an ionic or non-ionic absorbent to form a reacted absorbent and removing said reacted absorbent from said nitrated aromatic compound in said product mixture.

Abstract translation: 本发明涉及一种纯化芳族硝化产物混合物的方法，其包括硝化芳族化合物，水和硝酸或硫酸，其不包括以下顺序：（a）通过以下步骤从所述产物混合物中除去至少一部分所述水： 使所述混合物中的所述水与硝酸镁三水合物接触和反应以形成硝酸镁五水合物或硝酸镁六水合物，并从所述产物混合物中的硝化芳族化合物中除去所述五水合硝酸镁或硝酸镁六水合物，和（b）除去至少一部分 的所述酸从所述产物混合物中通过使所述酸与离子或非离子吸收剂接触和反应以形成反应的吸收剂并从所述产物混合物中的所述硝化芳族化合物中除去所述反应的吸收剂。

公开(公告)号：US5001286A

公开(公告)日：1991-03-19

申请号：US155199

申请日：1988-02-12

Applicant: Harro Witt ,  Heiko Beckhaus

Inventor： Harro Witt ,  Heiko Beckhaus

IPC: C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C201/16 ,  C07C205/06

CPC classification number: C07C201/16

Abstract: Sulphuric and nitric acids present in dinitrotoluene are separated from the dinitrotoluene by adding up to 10 wt. % water (based on quantity of dinitrotoluene) to the mixture of dinitrotoluene, sulphuric acid and nitric acid, mixing and separating the aqueous phase containing nitric and sulphuric acids. The mixtures treated by this process generally contain up to 5 wt. % nitric acid and up to 6 wt. % sulphuric acid.

Abstract translation: 通过加入10重量％的二硝基甲苯将二硝基甲苯中存在的硫酸和硝酸与二硝基甲苯分离。 以二硝基甲苯，硫酸和硝酸的混合物为基准，混合分离含有硝酸和硫酸的水相。 通过该方法处理的混合物通常含有至多5wt。 硝酸和最多6重量％ ％ 硫酸。

公开(公告)号：US4925565A

公开(公告)日：1990-05-15

申请号：US242882

申请日：1988-09-12

Applicant: Earl G. Adams ,  Robert B. Barker

Inventor： Earl G. Adams ,  Robert B. Barker

IPC: B01D11/04 ,  C02F1/26 ,  C02F11/06 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C205/22

CPC classification number: C07C201/16 ,  C02F1/26 ,  C02F11/06 ,  Y02W10/40 ,  Y10S210/909

Abstract: A process for treating nitrophenolic by-products contained in nitration waste water including the steps of solvent extraction, solvent and nitrophenolic residue recovery by distillation, and incineration of the nitrophenolic residue is disclosed. The extraction process involves the extraction of the nitrophenolic by-products from the nitration waste water utilizing a solvent in the presence of an acid at an elevated temperature and acidic pH. The extraction produces a nitrophenolic solvent solution which is subjected to a distillation to recover the solvent for reuse and produce a residue containing the nitrophenolic materials. The residue can be disposed of by incineration.

Abstract translation: 公开了一种硝化废水中含有硝基酚副产物的方法，包括通过蒸馏萃取溶剂萃取，溶剂和硝基酚残余物回收步骤以及硝基酚残留物的焚烧。 提取过程涉及在酸性存在下，在升高的温度和酸性pH下，使用溶剂从硝化废水中提取硝基酚副产物。 萃取产生硝基酚溶剂溶液，其经过蒸馏以回收溶剂以再利用并产生含有硝基酚材料的残余物。 残留物可以通过焚烧处理。