公开(公告)号：US5099078A

公开(公告)日：1992-03-24

申请号：US632252

申请日：1990-12-21

Applicant: Allen B. Quakenbush

Inventor： Allen B. Quakenbush

IPC: C07C201/08 ,  C07C205/06

CPC classification number: C07C201/08

Abstract: Described herein is a one pot continuous process for preparing dinitrotoluene by reacting toluene with concentrated nitric acid.

Abstract translation: 本文描述的是通过使甲苯与浓硝酸反应制备二硝基甲苯的一锅连续方法。

公开(公告)号：US4996376A

公开(公告)日：1991-02-26

申请号：US425930

申请日：1989-10-24

Applicant: Claude Doussain ,  Michel Gubelmann ,  Jean-Michel Popa

Inventor： Claude Doussain ,  Michel Gubelmann ,  Jean-Michel Popa

IPC: B01J27/18 ,  C07B61/00 ,  C07C201/08 ,  C07C205/06

CPC classification number: C07C201/08

Abstract: Dinitrotoluenes are prepared by reacting mononitrotoluene(s) with nitric acid, in liquid phase, in the presence of an inorganic and acidic solid including at least one component selected from among orthophosphoric acid, pyrophosphoric acid, metaphosphoric acid, a metal dihydrogen phosphate, a metal hydrogen phosphate, a metal orthophosphate or a metal pyrophosphate, such metal cations having from 1 to 5 positive charges.

Abstract translation: 二硝基甲苯通过在无机和酸性固体存在下在液相中与硝酸反应制备，所述无机酸性固体包括至少一种选自正磷酸，焦磷酸，偏磷酸，金属磷酸二氢盐，金属 磷酸氢盐，正磷酸金属或焦磷酸金属，具有1至5个正电荷的金属阳离子。

公开(公告)号：US4943666A

公开(公告)日：1990-07-24

申请号：US337886

申请日：1989-04-14

Applicant: Taiiti Okada ,  Toru Ishida

Inventor： Taiiti Okada ,  Toru Ishida

IPC: C07C201/08 ,  C07C67/00 ,  C07C201/00 ,  C07C205/26

CPC classification number: C07C201/08

Abstract: An improved industrial process for producing a compound of the general formula: ##STR1## wherein R is an alkyl group having 1 to 4 carbon atoms which comprises reacting a compound of the general formula: ##STR2## wherein R is as defined above with nitrous acid in a mixed solvent of water and a water-insoluble or slightly soluble organic solvent.

公开(公告)号：US4935557A

公开(公告)日：1990-06-19

申请号：US638437

申请日：1984-08-07

Applicant: Richard V. Carr ,  Bernard A. Toseland

Inventor： Richard V. Carr ,  Bernard A. Toseland

IPC: C07C201/08 ,  C07C205/06

CPC classification number: C07C201/08

Abstract: This invention relates to the preparation of a mixture of nitroaromatic compositions, particularly a mixture of mononitrobenzene and dinitrotoluene. The conitration of a mixture of aromatic hydrocarbons is accomplished by contacting the mixture of hydrocarbons with nitric acid, in the absence of sulfuric acid, at temperatures of from about 40.degree. to 70.degree. C. By the use of nitric acid alone, one avoids the heterogeneous nitration associated with the use of sulfuric acid and thereby one can effectively produce a reaction mixture containing mononitrobenzene and dinitrotoluene.

Abstract translation: 本发明涉及硝基芳族组合物，特别是单硝基苯和二硝基甲苯的混合物的混合物的制备。 芳族烃混合物的浓缩是通过在约40℃至70℃的温度下，在不存在硫酸的情况下将烃混合物与硝酸接触来实现的。通过单独使用硝酸，可以避免 与使用硫酸相关的异种硝化，从而可以有效地产生含有单硝基苯和二硝基甲苯的反应混合物。

公开(公告)号：US4910322A

公开(公告)日：1990-03-20

申请号：US220645

申请日：1988-07-15

Applicant: Vytautas Grakauskas ,  Lee C. Garver ,  Kurt Baum

Inventor： Vytautas Grakauskas ,  Lee C. Garver ,  Kurt Baum

IPC: C07C201/08 ,  C07C205/02 ,  C07C205/15 ,  C07C205/29 ,  C07C205/51 ,  C07D305/08 ,  C07D307/33

CPC classification number: C07D307/33 ,  C07C201/08 ,  C07C201/12 ,  C07D305/08

Abstract: Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.

Abstract translation: 通过在氧化剂和催化量的碱金属铁氰化物的存在下使具有可替代氢的有机硝基化合物与硝基连接的碳与亚硝酸根离子源反应制备双膦酸二硝基化合物。

公开(公告)号：US4788346A

公开(公告)日：1988-11-29

申请号：US54852

申请日：1987-05-27

Applicant: Michel Desbois

Inventor： Michel Desbois

IPC: B01J27/12 ,  C07B61/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C201/12 ,  C07C201/14 ,  C07C205/22 ,  C07C205/43 ,  C07F9/12 ,  C07C79/24 ,  C07C76/02

CPC classification number: C07C201/14

Abstract: A process for the preparation of para-nitrophenol by bringing a phenyl ester of an inorganic acid into contact with a nitrating agent in the presence of liquid hydrofluoric acid and a hydrolysis of the nitrated product obtained is carried out either simultaneously or in sequence with the nitration.

Abstract translation: 通过使无机酸的苯基酯在液体氢氟酸的存在下与硝化剂接触并且所得到的硝化产物的水解而制备对硝基苯酚的方法同时或按照硝化步骤进行 。

公开(公告)号：US4518811A

公开(公告)日：1985-05-21

申请号：US533049

申请日：1983-09-15

Applicant: Pierre Lhonore ,  Jacques Quibel ,  Bernard Jacquinot ,  Yvon Jestin ,  Robert Pelletier

Inventor： Pierre Lhonore ,  Jacques Quibel ,  Bernard Jacquinot ,  Yvon Jestin ,  Robert Pelletier

IPC: C07B43/02 ,  B01J3/04 ,  B01J19/00 ,  C07B31/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C205/02 ,  C07C205/03 ,  C07C76/02

CPC classification number: C07C201/08 ,  B01J19/0013 ,  B01J3/042 ,  B01J2219/00063 ,  B01J2219/00085 ,  B01J2219/00159 ,  B01J2219/00162 ,  B01J2219/00164 ,  Y10T137/85938

Abstract: A reactor for nitration of saturated hydrocarbons having less than five con atoms, alone or in admixture, in the gaseous phase under pressure is made up of a reaction enclosure, in which a tube or pipe bank is in contact with a heated fluid of high heat-exchange capacity. The inside perimeter of the tubes does not exceed 800 mm, and if circular not in excess of 250 mm, and the ratio of the surface of the tube bank, in contact with the reaction medium, to the volume of the reaction enclosure is 1:1 to 3:1.The reactor apparatus further includes a mechanical means to uniformly distribute the delivery of reaction medium gases to the various tubes of the bank so that the load difference between the most loaded tube and that of the least loaded tube is equal to 10% at the most.The reactor also includes a tube bank injector which feeds the tube bank to assure homogeneous mixing of all the reaction fluids in the tube bank.

公开(公告)号：US4495372A

公开(公告)日：1985-01-22

申请号：US403450

申请日：1982-11-05

Applicant: Joseph A. Feiccabrino

Inventor： Joseph A. Feiccabrino

IPC: C07C205/05 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C205/06 ,  C07C79/10

CPC classification number: C07C201/08

Abstract: A process for mon-nitrating a plynuclear aromatic compound essentially in the absence of sulfuric acid and a solvent comprising adding nitric acid to a liquid aromatic compound wherein the molar ratio of nitric acid to the aromatic compound in from 0.75/1 ot 2/1 and the reaction temperature is from 50.degree. to 100.degree. C.

Abstract translation: 一种基本上不存在硫酸和包含向其中硝酸与芳族化合物的摩尔比为0.75 / 1/2/2的液体芳族化合物中加入硝酸的溶剂进行单硝化的方法， 反应温度为50〜100℃。

公开(公告)号：US4458094A

公开(公告)日：1984-07-03

申请号：US341679

申请日：1982-01-22

Applicant: Martin B. Sherwin

Inventor： Martin B. Sherwin

IPC: C07C201/08 ,  C07C67/00 ,  C07C201/00 ,  C07C205/02 ,  C07C76/02

CPC classification number: C07C201/06 ,  C07C201/08

Abstract: An improved process for forming nitroparaffins by gaseous phase nitration of hydrocarbons higher than methane. The improvement comprises carrying out the nitration in the presence of a small amount of oxygenated hydrocarbons selected from aldehydes, ketones, alcohols, ethers and mixtures thereof.

Abstract translation: 通过高于甲烷的烃的气相硝化形成硝基烷烃的改进方法。 该改进包括在少量选自醛，酮，醇，醚及其混合物的氧化烃的存在下进行硝化。

公开(公告)号：US4021498A

公开(公告)日：1977-05-03

申请号：US639019

申请日：1975-12-09

Applicant: Verner Alexanderson ,  James Bryant Trecek ,  Cornelius Marsden Vanderwaart

Inventor： Verner Alexanderson ,  James Bryant Trecek ,  Cornelius Marsden Vanderwaart

IPC: C07B43/02 ,  C07B31/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/08 ,  C07C205/06 ,  C07C205/11 ,  C07C205/12 ,  C07C205/47 ,  C07C79/10 ,  C07C79/12

CPC classification number: C07C201/08

Abstract: An adiabatic process for the mononitration of nitratable aromatic hydrocarbons and halo substituted aromatic hydrocarbons which yield a mononitration product containing less than 500 ppm. of dinitrated product is disclosed.

Abstract translation: 产生含有小于500ppm的单硝化产物的可硝化芳族烃和卤代烃芳族烃单硝化的绝热方法。 的硝酸盐产品被公开。