| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568924000 | Nitro containing (including aci forms) | 49 |
| 568927000 | Benzene ring containing | 36 |
| 20100130795 | METHOD FOR PRODUCING BETA-NITROSTYRENE COMPOUND - A method for producing a β-nitrostyrene compound is provided in which a benzaldehyde derivative represented by the following formula (I): | 05-27-2010 |
| 568928000 | Plural rings containing | 3 |
| 20100076229 | Method for Producing Alkenylnitrobenzene Derivatives Unbranched in the 1'-Position - The present invention relates to a process for preparing alkenylnitrobenzenes and alkylanilines, which are of significance as intermediates for fungicidally active alkylanilides. | 03-25-2010 |
| 568929000 | Polycyclo ring system | 2 |
| 20150141712 | PROCESS FOR THE PREPARATION OF BENZONORBORNENES - The present invention relates to a novel a process for the preparation of 9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-ylamine which process comprises a) reacting cyclopentadiene in the presence of a radical initiator and CXCl3, wherein X is chloro or bromo, to a compound of formula I1, or aa) reacting cyclopentadiene with CXCl3, wherein X is chloro, in the presence of a metal catalyst to a compound of formula I1, wherein X is chloro, b) reacting the compound of formula I1 with a base in the presence of an appropriate solvent to the compound of formula III, c) and converting the compound of formula III in the presence of 1,2-dehydro-6-nitrobenzene to the compound of formula IV, and d) hydrogenating the compound of formula IV in the presence of a metal catalyst. | 05-21-2015 |
| 568930000 | Polynitro | 1 |
| 20120059198 | DERIVATISATION OF CARBON - A molecular species is covalently attached to elemental carbon by exposing the carbon to a reaction mixture containing a strong base and a compound of the formula (I) or (II) in which X denotes a covalently attached atom or group capable of forming an X | 03-08-2012 |
| 568932000 | Polynitro | 13 |
| 568933000 | Halogen containing | 1 |
| 20100160695 | PROCESS FOR THE SYNTHESIS OF DIHALODINITROTOLUENE - An improved process is provided for the preparation of 2,6-dihalo-3,5-dinitrotoluene by the nitration of 2,6-dihalotoluene. The direct isolation of highly pure 2,6-dihalo-3,5-dinitrotoluene is accomplished without a water or ice quench, by providing at least one equivalent of SO | 06-24-2010 |
| 568934000 | Single methyl and plural nitros only bonded directly to benzene ring (e.g., dinitrotoluene, etc.) | 12 |
| 20080242900 | Method for Producing Dinitrotoluene - The invention relates to a method for producing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product of step a) into a mononitrotoluene-containing organic phase and a sulphuric acid-containing aqueous phase, c) reacting the mononitrotoluene-containing organic phase with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product of step c) into a dinitrotoluene-containing organic phase and a sulphuric-acid containing aqueous phase, whereby the reaction product of step a) contains 3.0 to 8 wt % of toluene, in relation to the organic phase, and 0.1 to 1.2 wt. % of nitric acid, in relation to the aqueous phase and the phase separation of step b) is carried out in such a manner that further reaction of toluene with nitric acid is prevented. | 10-02-2008 |
| 20090043135 | PROCESS FOR THE SEPARATION BY DISTILLATION OF DINITROTOLUENE FROM PROCESS FOR THE SEPARATION BY DISTILLATION OF DINITROTOLUENE FROM PROCESS FOR THE SEPARATION BY DISTILLATION OF DINITROTOLUENE FROM PROCESS WASTEWATER FROM THE PREPARATION OF DINITROTOLUENE BY NITRATION OF TOLUENE BY MEANS OF NITRATING ACID - A process is proposed for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating toluene with nitrating acid, which comprises
| 02-12-2009 |
| 20100145109 | METHOD FOR PREPARING DINITROTOLUENE - The present invention relates to a process for preparing dinitrotoluene. The process of the invention for preparing dinitrotoluene from mononitrotoluene, which comprises carrying out a mononitrotoluene nitration reaction using a nitrating mixture comprising nitric acid, sulphuric acid and water resulting in a two-phase medium and separating the organic and aqueous phases of said two-phase medium, is characterized in that the mononitrotoluene nitration is carried out using a nitrating mixture comprising at most 10% by weight of water resulting in a two-phase medium, in that the organic and aqueous phases of said two-phase medium are separated, and in that the aqueous phase derived from the separating operation is recycled, at the end of the mononitrotoluene nitration reaction and before the separation of the organic and aqueous phases, such that the weight ratio of the aqueous phase to the organic phase is at least equal to 1.2. | 06-10-2010 |
| 20100185026 | Activated Base Metal Catalysts - Nitro-compounds are hydrogenated with an activated Ni catalyst whose Ni/Al alloy also contained one or more elements from the list of Cu, Ag and Au prior to activation. In combination with the Group IB elements mentioned above, this catalyst can also be doped with other elements via their addition to the Ni/Al alloy prior to activation and/or they can be adsorbed onto the surface of the catalyst either during or after the activation of the alloy. The suitable doping elements for the alloy prior to activation in combination with the group IB elements mentioned above are one or more of the elements from the list of Mg, Ti, Ce, Cr, V, Mo, W, Mn, Re, Fe, Co, Tr, Ru, Rh, Pd, Pt and Bi. The suitable doping elements that may be adsorbed onto the surface of the catalyst that was previously doped in the alloy prior to activation with the group IB elements mentioned above are one or more elements from the list Mg, Ca, Ba, Ti, Ce, V, Cr, Mo, W, Mn, Re, Fe, Ru, Co, Rh, Ir, Pd, Pt, Ni, Cu, Ag, Au and Bi. | 07-22-2010 |
| 20120136181 | WASHING SYSTEM FOR NITROAROMATIC COMPOUNDS - A method of removing alkalinity and salt from a nitroaromatic product downstream of water washing to remove mineral acids and alkaline washing to remove salts of organic acids, comprises washing the product stream with an acidic aqueous solution, prior to the step of removing excess organic reactant, by steam stripping or distillation. Acid removed from the stripper or column is recycled back for use in the acidic washing. The acidic washing is done instead of the neutral washing step of the prior art. It removes residual salt and decreases the level of entrained colloidal water in the nitroaromatic product. | 05-31-2012 |
| 20140039227 | PROCESS FOR SCRUBBING DINITROTOLUENE - The invention relates to a process for scrubbing a crude mixture comprising dinitrotoluene, nitric acid, nitrogen oxides and sulfuric acid obtained in the nitration of toluene after the nitrating acid has been separated off, which comprises two scrubbing steps (SS-I) and (SS-II), wherein
| 02-06-2014 |
| 20150329469 | SEPARATION METHOD FOR DINITROTOLUENE AND MIXED ACID IN A TOLUENE TO DINITROTOLUENE PROCESS - Proposed is a separation method in a toluene to dinitrotoluene process, wherein said method with a first process step comprising feeding a toluene comprising first stream ( | 11-19-2015 |
| 20160194270 | METHOD FOR REMOVING HCN FROM CRUDE DINITRO TOLUENE | 07-07-2016 |
| 20160251302 | PROCESS FOR ACIDIC SCRUBBING OF DINITROTOLUENE IN THE PRESENCE OF HYDROCYANIC ACID | 09-01-2016 |
| 568935000 | Trinitrotoluene | 3 |
| 20090312584 | Process For Preparing High Purity TNT - A process for preparing trinitrololuene (TNT) in which toluene is treated with nitric acid having a concentration of about 90% to about 99%, and preferably about 98% to about 99%, by weight at a temperature of less than about 60° C., and preferably less than 30° C., to produce high purity dinitrotoluene. The resulting dinitrotoluene is then treated with nitric acid having a concentration of about 98% to about 99% by weight and trifluoromethane sulfuric acid to produce high purity TNT. | 12-17-2009 |
| 20100130796 | HEATER SUITABLE FOR USE IN A PRECONCENTRATOR DEVICE - Improved micro machined (MEMs scale) heaters, which are particularly suitable for use in MEMs scale preconcentrators. Preferably the heater possess a trapping medium, in particular a polymer of intrinsic microporosity (PIMs). There is further provided devices comprising the preconcentrator, and methods of preparation and use. There is particular benefit directed to the use of a MEMs scale heater coated with the PIMs for use in hand-held or field portable chemical detection devices. The heater comprises a number of electrically conducting paths which have been engineered so that the electrical resistance of all the electrically conducting paths are substantially equal, to provide a more uniform heat distribution. | 05-27-2010 |
| 20130338407 | METHOD FOR RECLAIMING TNT AND TNT-BASE HIGH EXPLOSIVE FROM WARHEAD BY STRIP DOWN IN SUPERCRITICAL FLUID - A method for the retraction of an explosive component from a high explosive, including the steps of loading a high explosive containing an explosive component into an striping down vessel; supplying a supercritical fluid to the striping down vessel; contacting the high explosive with the supercritical fluid at a temperature below the melting point of the explosive component and at a pressure sufficient to strip down the explosive component; and inducing a sonicating process on the striping down vessel simultaneously at a frequency of 2 MHz to 10 MHz. | 12-19-2013 |
| 568936000 | Halogen containing | 1 |
| 20100087690 | COMPOSITION FOR TREATING INFECTIOUS DISEASES - Compounds of the general formula (I) or salts thereof, for use as a pharmaceutical composition for treating infectious diseases, especially for treating diseases caused by | 04-08-2010 |
| 568939000 | Nitro bonded directly to benzene ring | 18 |
| 20090005615 | SYSTEM AND PROCESS FOR PRODUCTION OF NITROBENZENE - A method for producing nitrobenzene is disclosed which comprises forming a dispersion comprising benzene-containing droplets or particles dispersed in a mixture of concentrated nitric acid and concentrated sulfuric acid, wherein said particles have a mean diameter less than one micron, and subjecting the dispersion to reaction conditions comprising a pressure in the range of about 203 kPa (2 atm) to about 6080 kPa (60 atm) and a temperature in the range of about 20° C. to about 230° C., whereby at least a portion of said benzene is nitrated to form nitrobenzene. A system for carrying out the method is also disclosed. | 01-01-2009 |
| 20090187051 | Process for the preparation of nitrobenzene by adiabatic nitration - This invention relates to a process for the continuous preparation of nitrobenzene. This process comprises the adiabatic nitration of benzene with a mixture of sulfuric acid and nitric acid, in which the sum of the concentrations in the reaction zone of the metal ions which form sparingly soluble metal sulfates is less than 900 mg/l, based on the volume of the aqueous phase which contains sulfuric acid. | 07-23-2009 |
| 20100076230 | CONTINUOUS PROCESS FOR THE MANUFACTURE OF NITROBENZENE - The invention relates to a continuous process for the manufacture of nitrobenzene. This process comprises the nitration of benzene with nitrating acid that contains at least 3.0 wt. % of nitric acid and at least 67.0 wt. % of sulfuric acid, in a reaction space in which the start temperature of the reaction is above 100.0° C. but below 102.0° C. In addition, this process requires that the benzene and the nitrating acid are dispersed in one another several times. | 03-25-2010 |
| 20110196177 | PROCESS FOR THE CONTINUOUS PREPARATION OF NITROBENZENE - Nitrobenzene is continuously produced by nitration of benzene with mixed acid under adiabatic conditions. In this process, the pressure upstream of the nitration reactor is from 14 bar to 40 bar above the pressure in the gas phase of the phase separation apparatus used to separate crude nitrobenzene and waste acid. | 08-11-2011 |
| 20110218368 | METHOD FOR REDUCING THE FORMATION OF BY-PRODUCT DINITROBENZENE IN THE PRODUCTION OF MONONITROBENZENE - A method for making mononitrobenzene using a plug flow reactor train. Benzene, nitric acid and sulfuric acid are introduced into the reactor and produced mononitrobenzene is removed at an outlet end. All of the benzene and at least part of the sulfuric acid are introduced at the inlet end of the reactor. A first portion of the nitric acid is introduced by a first nitric acid feed into the inlet end and a second portion of the nitric acid is introduced at one or more additional feeds that are spaced between the inlet end and the outlet end. The method results in reduced formation of by-product dinitrobenzene, improving the reaction yield of mononitrobenzene while avoiding the need for a distillation step. | 09-08-2011 |
| 20110245547 | ADIABATIC PROCESS FOR MAKING MONONITROBENZENE - An adiabatic process for making mononitrobenzene by the nitration of benzene which minimizes the formation of nitrophenols and dinitrobenzene by-products. The process uses a mixed acid having less than 3 wt % nitric acid, 55 to 80 wt % sulfuric acid, and water. The initial temperature of the mixed acid is in the range of 60 to 96° C. The nitration reaction is complete in about 300 seconds and produces less than 1,200 ppm nitrophenols and less than about 80 ppm dinitrobenzene. The reaction can be carried out in a plug-flow or a stirred pot reactor, or a combination of such reactors. | 10-06-2011 |
| 20120157722 | PROCESS FOR PREPARING MONONITRATED ORGANIC COMPOUNDS - The present invention relates to a process for continuously preparing a mononitrated organic compound, especially a process for preparing mononitrobenzene. The invention relates more particularly to an improved continuous adiabatic process for preparing nitrobenzene. | 06-21-2012 |
| 20130041188 | PROCESS FOR PURIFYING WASTEWATERS FROM THE WORKUP OF CRUDE AROMATIC NITRO COMPOUNDS - The invention relates to a process for purifying crude aromatic nitro compounds which originate from the nitration of aromatic compounds, comprising the following wash stages (a1) and (a2), where each of stages (a1) and (a2) may be performed once or more than once in succession:
| 02-14-2013 |
| 20130041189 | PROCESS FOR PURIFYING WASTEWATERS FROM THE WORKUP OF CRUDE AROMATIC NITRO COMPOUNDS - The invention relates to a process for purifying crude aromatic nitro compounds which originate from the nitration of aromatic compounds, comprising the single or multiple performance of the following wash stage (a): | 02-14-2013 |
| 20140221703 | METHOD AND APPARATUS FOR PURIFYING NITRATION PRODUCTS - The present invention relates to a method for removing impurities from nitrated crude products obtained during the nitration of nitratable aromatic compounds, after removal of the final nitrating acid, by treatment with a washing medium, and also to a plant or apparatus suitable for implementing this method. Further provided by the invention is a production plant for the nitration of nitratable aromatic compounds with subsequent purification of the nitrated products. | 08-07-2014 |
| 20140357905 | METHOD AND SYSTEM FOR PRODUCING NITROBENZENE - The present invention relates to a process and a plant for the production, in particular the continuous production, of nitrobenzene by means of adiabatic nitration of benzene with nitric acid in the presence of sulfuric acid, in which, following the nitration, a multi-stage concentration of the sulfuric acid is carried out by means of heating at a pressure that is reduced as compared with ambient pressure, and wherein the heating takes place using the heat generated in the adiabatic nitration of benzene. | 12-04-2014 |
| 20150073180 | METHOD FOR CONTINUOUS PRODUCTION OF NITROBENZENE - The invention relates to a method for producing nitrobenzene, in which crude nitrobenzene is first produced by nitrating benzene and said crude nitrobenzene is then washed in succession in at least one acid wash, in at least one alkaline wash and in at least one neutral wash, at least one additional wash with an aqueous solution of a potassium salt being interposed between the last alkaline wash and the first neutral wash. | 03-12-2015 |
| 20150099906 | METHOD FOR THE CONTINUOUS PRODUCTION OF NITROBENZENE - The present invention relates to a method for producing nitrobenzene, in which the waste gas streams accruing in the process and containing benzene and (traces of) nitrobenzene, possibly low- and medium-boiling components, possibly non-condensable gases and possibly water, optionally after removal of nitrogen oxides, are scrubbed in an absorption column with nitrobenzene, which comprises only very small amounts (maximum 50 ppm) of benzene and is distributed by means of a liquid distributor at a rate of 50 to 200 drip points per square metre, preferably 60 to 120 drip points per square metre, wherein (i) a liquid stream containing benzene and nitrobenzene, possibly organic low- and medium-boiling components and additionally containing sulfuric acid if sulfuric acid is used as the scrubbing agent and (ii) waste gas depleted in benzene and possibly in organic low- and medium-boiling components are obtained. A waste gas purified by the method according to the invention is particularly suitable for burning in a thermal exhaust air treatment process. | 04-09-2015 |
| 20150336875 | METHOD FOR THE CONTINUOUS PRODUCTION OF NITROBENZENE - The present invention relates to a method for producing nitrobenzene, in which the waste gas streams accruing in the process and containing benzene and (traces of) nitrobenzene, possibly low- and medium-boiling components, possibly non-condensable gases and possibly water, optionally after removal of nitrogen oxides, are scrubbed in an absorption column with nitrobenzene, which comprises only very small amounts (maximum 50 ppm) of benzene and is distributed by means of a liquid distributor at a rate of 50 to 200 drip points per square metre, preferably 60 to 120 drip points per square metre, wherein (i) a liquid stream containing benzene and nitrobenzene, possibly organic low- and medium-boiling components and additionally containing sulfuric acid if sulfuric acid is used as the scrubbing agent and (ii) waste gas depleted in benzene and possibly in organic low- and medium-boiling components are obtained. A waste gas purified by the method according to the invention is particularly suitable for burning in a thermal exhaust air treatment process. | 11-26-2015 |
| 20160083332 | PROCESS FOR THE PREPARATION OF NITROBENZENE BY ADIABATIC NITRATION - The present invention relates to a continuously operated adiabatic process for the preparation of nitrobenzene by nitration of benzene with nitric acid and sulfuric acid, in which the dilute sulfuric acid obtained after the nitration has taken place and the crude nitrobenzene has been separated off from the aqueous phase is concentrated for the purpose of re-use in the nitration, and after its concentration, at least one minute before it comes into contact with fresh nitric acid again an oxidizing agent is added such that a concentration of the oxidizing agent of from 10 ppm to 5,000 ppm, based on the total weight of the concentrated sulfuric acid to be recycled into the nitration, is established. | 03-24-2016 |
| 568940000 | Methyl bonded directly to benzene ring (e.g., nitroxylene, etc.) | 3 |
| 20110224463 | MODULAR REACTOR - Modular microreactors are provided composed of microreactor parts including a plate body which has, on one plate side, a groove-shaped depression in which a reactor tube is accommodated, and the reaction tube has connection ends on the outer sides of the plate body. Also disclosed are reaction tubes for turbulent mixing, kits for producing the reactors and the use thereof for commencing chemical reactions. | 09-15-2011 |
| 20130018210 | REMOVAL OF NON-AROMATIC IMPURITIES FROM A NITRATION PROCESSAANM Guenkel; Alfred A.AACI VancouverAACO CAAAGP Guenkel; Alfred A. Vancouver CAAANM Berretta; SergioAACI VancouverAACO CAAAGP Berretta; Sergio Vancouver CA - A method and apparatus for removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which process an aromatic reactant is nitrated ( | 01-17-2013 |
| 20130253233 | PROCESS FOR ADIABATIC PRODUCTION OF MONONITROTOLUENE - A process for continuous adiabatic nitration of toluene to mononitrotoluene (MNT). The process yields a product quality of MNT that is comparable to that obtained by isothermal production. The process uses excess toluene, with the reaction rate being controlled to maintain a residual of 0.003-0.102 wt % nitric acid in the spent acid and an orange to red color of the spent acid. Further process conditions include re-concentrated sulfuric acid at 83 to 99 degrees C. with a concentration of sulfuric acid from 66 to 70.5 wt %. This is mixed with nitric acid to generate a mixed acid with 1.0 to 3.8 wt % nitric acid and toluene is added at a rate of 1.1 to 1.71 moles toluene/mole nitric acid. The reactants are mixed in a reactor with an overall average mixing intensity of 5.8 to 19 W/kg of contained solution. | 09-26-2013 |
| 568943000 | Acyclic | 13 |
| 568944000 | Polynitro | 3 |
| 20090299106 | HIGHLY ENERGY-PRODUCING COMPOUND - A highly energy-producing compound which can be used, for example, as an explosive, propellant, oxidant and the like, and which includes an alkyne unit in which at least one hydrogen atom has been replaced by a trinitromethyl —C(NO | 12-03-2009 |
| 20110092748 | Process For Nitroalkane Recovery By Aqueous Phase Recycle To Nitration Reactor - Disclosed are a process and an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by recycling a majority of the aqueous phase back to the reactor. | 04-21-2011 |
| 20130184504 | METHOD FOR PREPARING 2,3-DIMETHYL-2,3-DINITROBUTANE - The present invention relates to a method for preparing 2,3-dimethyl-2,3-dinitrobutane (DMNB), which includes the following steps: (1) making titanium-silicate molecular sieve catalyst, acetone, hydrogen peroxide and ammonia contact and react at 65-80° C. to obtain a modified titanium-silicate molecular sieve catalyst; and (2-1) making acetone oxime and hydrogen peroxide contact and react in the presence of the modified titanium-silicate molecular sieve catalyst and water under the conditions of temperature of 60-90° C. and pH of 8-10, and separating DMNB from the reaction products thereof; or (2-2) making acetone, ammonia and hydrogen peroxide contact and react in the presence of the modified titanium-silicate molecular sieve catalyst and water under the conditions of temperature of 60-90° C. and pH of 8-10, and separating DMNB from the reaction products thereof. By the method provided by the present invention, DMNB can be prepared without having to use dangerous chemicals, such as 2-nitropropane, NaH and the like. | 07-18-2013 |
| 568946000 | Halogen containing | 2 |
| 20100152501 | Process of preparing bromopicrin - Process of preparing high purity bromopicrin, and high purity bromopicrin produced therefrom. Providing a mixture of nitromethane and bromine, and preferably water, and absent of organic solvent. Adding an aqueous solution of an alkaline substance to the mixture, thereby providing a reaction mixture containing bromopicrin, the adding performed such that no excess of the alkaline substance occurs in the reaction mixture during the adding. Collecting the organic phase (containing the bromopicrin) from the reaction mixture. No need for subjecting the organic phase of the reaction mixture to distillation or extraction, for obtaining near quantitative yield of bromopicrin having purity of at least equal to or greater than 96 weight percent. Process parameters controlling selectivity of reaction forming bromopicrin are molar ratio of bromine and nitromethane in the mixture; reaction temperature while bromopicrin is formed; concentration of the alkaline substance in the aqueous solution; and reaction time. | 06-17-2010 |
| 20100204528 | CONTINUOUS PROCESS OF PREPARING BROMOPICRIN - A continuous process of preparing bromopicrin is disclosed. The process is effected by transferring a continuous flow of a first mixture and a continuous flow of a second mixture into a first reactor, the first mixture containing nitromethane and bromine and the second mixture containing an aqueous solution of an alkaline substance, to thereby obtain a reaction mixture which comprises bromopicrin in said first reactor; and collecting the bromopicrin from the reaction mixture. Highly pure bromopicrin obtained by this process is also disclosed. | 08-12-2010 |
| 568947000 | Nitroalkanes | 8 |
| 20110160496 | HYDROCARBON FEED FLEXIBLE HIGH PRESSURE NITRATION PLANT DESIGN - Disclosed is an apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. The apparatus may be designed such that it can synthesize more than one nitroalkane using the same equipment. | 06-30-2011 |
| 20140031594 | Apparatus and Process for Nitration Selectivity Flexibility Enabled by Azeotropic Distillation - Disclosed are processes and apparatuses for concentrating at least one organic acid using an alkyl acetate as an entrainer. The processes and apparatuses may use the same alkyl acetate as an entrainer to concentrate a mixture of organic acids. | 01-30-2014 |
| 20150094501 | Process for the Manufacture of Nitropropanes - Provided is a process for the formation of 2-nitropropane and/or 2,2-dinitropropane by the nitration of propane with dilute nitric acid. | 04-02-2015 |
| 20150376111 | METHOD FOR PRODUCING NITROALKANES IN A MICROSTRUCTURED REACTOR - The invention relates to a process for preparing nitroalkanes by reaction of at least one alkane with at least one nitrating agent in the gas phase, wherein the nitration is carried out in a microstructured reaction zone having parallel channels having hydraulic diameters of less than 2.5 mm and a total specific internal surface area of more than 1600 m | 12-31-2015 |
| 568948000 | Nitromethane | 4 |
| 20110092749 | Process For Downstream Recovery Of Nitroalkane Using Dividing Wall Column - Disclosed are a process and apparatus for synthesizing nitroalkanes by reaction of a hydrocarbon feedstock with aqueous nitric acid. Energy and capital costs may be reduced by using a dividing wall column. | 04-21-2011 |
| 20110092750 | PROCESS FOR THE MANUFACTURE OF NITRATED HYDROCARBONS - Provided is a process for making nitrated hydrocarbons by reacting aqueous nitric acid with a hydrocarbon feedstock and a carboxylic acid under specific reaction conditions. | 04-21-2011 |
| 20110105806 | METHOD FOR ELIMINATING COLOR FORMING IMPURITIES FROM NITRO COMPOUNDS - A method for stabilizing nitro compounds against discoloration. The method comprises reacting nitro compounds containing color-forming impurities with nitric acid, neutralizing and washing the product, and distilling therefrom purified nitro compounds. | 05-05-2011 |
| 20130245340 | Apparatus and Process for Using a Nitroalkane as an Entrainer for Azeotropic Removal of Water from Aqueous Acid Solution - Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid. | 09-19-2013 |
