| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 564336000 |
Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain
| 104 |
| 564415000 |
Forming amine group directly by reduction
| 70 |
| 564307000 |
Amino nitrogen and a ring bonded directly to the same ring, and any other amino nitrogen in the compound is bonded directly to one of the rings
| 30 |
| 564426000 |
Polycyclo ring system
| 28 |
| 564395000 |
Preparing directly by amination
| 25 |
| 564315000 |
Two aryl rings or ring systems bonded directly to the same carbon
| 16 |
| 564443000 |
Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
| 12 |
| 564431000 |
Two carbocyclic rings, at least one of which is benzene, bonded directly to the same nitrogen
| 9 |
| 564442000 |
Halogen, bonded directly to carbon, containing
| 7 |
| 564440000 |
Sulfur attached indirectly to the amino nitrogen by nonionic bonding
| 6 |
| 564414000 |
Preparing directly from an amide (e.g., preparing directly from a sulfenamide, nitrosamine, carboxamide, thiourea, etc.) | 5 |
| 20110295038 | Process for the Preparation of Substituted 1-aminomethyl-2-phenyl-cyclohexane Compounds - A process for the preparation of substituted 1-aminomethyl-2-phenyl-cyclohexane compounds. | 12-01-2011 |
| 20120157713 | METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE WITH THE BASE CATALYST COMPLEX - Provided is a method for preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield via the NASH reaction using a mixture of a bis-quaternary ammonium base and a base catalyst for the reaction of urea with nitrobenzene, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone in the presence of hydrogen and hydrogenation catalyst. The catalyst complex used in the present invention allows easy recovery, provides superior alkaline stability and is capable of reducing production cost. | 06-21-2012 |
| 20120157714 | METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE BY USING 4-NITROANILINE - Provided is a method of preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield by reacting 4-nitroaniline with excess nitrobenzene via the NASH reaction, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone compound in the presence of hydrogen and hydrogenation catalyst. The disclosed process is simple, allows selective preparation of 4,4′-DNDPA without byproducts, and thus allows preparation of 4,4′-BAADA in high yield without a complicated purification procedure. | 06-21-2012 |
| 20130172619 | METHOD FOR PRODUCING ALCOHOL AND/OR AMINE FROM AMIDE COMPOUND - Disclosed herein is a method for producing an alcohol and an amine from an amide under an atmosphere of hydrogen with the use of, as a catalyst, a ruthenium complex that is easily prepared, easy to handle, and relatively cheaply obtained. Specifically, the method is a method for producing an alcohol and/or an amine from an amide compound under an atmosphere of hydrogen with the use of as a catalyst, a ruthenium carbonyl complex represented by the following general formula (1): RuXY(CO)(L) (1) wherein X and Y may be the same or different from each other and each represents an anionic ligand and L represents a tridentate aminodiphosphine ligand containing two phosphino groups and a —NH— group. | 07-04-2013 |
| 20160009634 | A PROCESS FOR THE PREPARATION OF 2-AMINO-1,3-PROPANE DIOL COMPOUNDS AND SALTS THEREOF | 01-14-2016 |
| 564409000 |
Preparing directly by ring alkylation or dealkylaton | 4 |
| 20080234517 | ALKYLATION OF N'-PHENYL-N-ALKYLPHENYLENEDIAMINES IN IONIC LIQUID AND N'-PHENYL-N-ALKYL(ALKYLPHENYLENE) DIAMINES PRODUCED THEREBY - A process for alkylation of a N′-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N′-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture. | 09-25-2008 |
| 20080312472 | Additives - Para-alkylated diphenylamine antioxidants are made by catalytically alkylating diphenylamine with an alkylating agent in the form of a mixture of branched-chain oligomers of butene, the alkylating agent having an average molecular weight in the range of 140 to 300 and a methylvinylidene isomer content of no greater than 10%. | 12-18-2008 |
| 20130066113 | PROCESS FOR PREPARING ALKYLATED P-PHENYLENEDIAMINES - A process for preparing alkylated p-phenylenediamine having the steps of reacting aniline and nitrobenzene in presence of a complex base catalyst to obtain 4-aminodiphenylamine intermediates, hydrogenating the 4-aminodiphenylamine intermediates to 4-aminodiphenylamine in presence of a hydrogenation catalyst, and reductively alkylating the 4-aminodiphenylamine to alkylated p-phenylenediamine. | 03-14-2013 |
| 20150105588 | FIXED BED PROCESS FOR CLAY CATALYZED ALKYLATION OF AROMATIC AMINES - Aromatic amines, for example, diarylamines such as diphenylamine, dinaphthylamine, N-phenyl-N-naphthyl amine etc., are alkylated by passing a mixture of the amine and an olefin, though a clay catalyst in a fixed bed reactor system. The process is conveniently run as a continued process, produces an alkylated aromatic amine in excellent purity and provides efficiencies in material and energy use. | 04-16-2015 |
| 564437000 |
Purification or recovery | 3 |
| 20090306431 | PROCESS FOR PRODUCING ANTIAGING AGENT, VULCANIZATION ACCELERATOR OR MODIFIED NATURAL RUBBER BY MEANS OF MICROORGANISM OR PLANT - An object of the present invention is to provide processes for producing an antiaging agent, a vulcanization accelerator and a modified natural rubber, which are environmentally friendly and capable of making provision against a decrease of petroleum resources in the future. An antiaging agent, a vulcanization accelerator or a modified natural rubber is produced by a method comprising: converting glucose into benzoic acid or a benzoic acid derivative by a microorganism or extracting benzoic acid or a benzoic acid derivative from a plant; and converting the obtained benzoic acid or benzoic acid derivative into aniline or an aniline derivative. | 12-10-2009 |
| 20130172620 | METHOD FOR PRODUCTION OF F-18 LABELED AMYLOID BETA LIGANDS - This invention relates to methods, which provide access to [F-18]fluoropegylated (aryl/heteroaryl vinyl)-phenyl methyl amine derivatives. | 07-04-2013 |
| 20150094493 | METHOD FOR TREATING A SUBSTANCE MIXTURE COMPRISING AN AROMATIC AMINE, IN PARTICULAR A SUBSTANCE MIXTURE OF RAW ANILINE - The present invention relates to a method for treating a substance mixture comprising an aromatic amine, wherein the aromatic amine is aniline or 2,4-diaminotoluene, preferably aniline. The substance mixture comprises an aromatic amine and compounds having a higher boiling point than the aromatic amine. The method for treating the substance mixture requires I) separating the first substance mixture by means of distillation in a first distillation unit ( | 04-02-2015 |
| 564393000 |
Preparing directly from ester other than by reduction of nitrile | 3 |
| 20110190540 | Methods for Preparing S1P Receptor Agonists and Antagonists - Disclosed herein are methods of making compounds which are agonists or antagonists of one or more of the individual receptors of the S1P receptor family. | 08-04-2011 |
| 20120271067 | METHOD FOR TREATMENT OF ISOCYANATE RESIDUE, AND METHOD FOR TREATMENT OF CARBONATE - A method for treating an isocyanate residue, which comprises carrying out a thermal decomposition reaction of a carbamate that is produced by the reaction among an amine, urea and/or an N-unsubstituted carbamic acid ester and an alcohol to produce a decomposition solution, separating an isocyanate and the alcohol from the decomposition solution to produce the isocyanate residue, and bringing the isocyanate residue into contact with high-pressure/high-temperature water to decompose the isocyanate residue into an amine; and a method for treating a carbonate, which comprises bringing the carbonate into contact with high-pressure/high-temperature water to decompose the carbonate into an alcohol. | 10-25-2012 |
| 20120289746 | PROCESS FOR WORKING UP AN ISOCYANATE-COMPRISING STREAM - The invention relates to a process for working up a stream ( | 11-15-2012 |
| 564394000 |
Preparing directly from organic acid, acid halide or salt | 3 |
| 20080221357 | Method for Producing Amines from Hydroxamic Acids - A method for producing unprotected or carbamate-protected amines of formulae (II) and (III) or R | 09-11-2008 |
| 20100041920 | NEW SALT FORMS OF AN AMINOINDAN DERIVATIVE - The present invention relates generally to novel salt forms of R-(+)-N-propargyl-1-aminoindan (i.e. rasagiline base), to a compound of formula Ia, to processes for their preparation and isolation, and to pharmaceutical compositions comprising the same. | 02-18-2010 |
| 20110105800 | FACILE SYNTHESIS OF 3-AMINOPICRIC ACID - Embodiments of methods for preparing 3-aminopicric acid from picric acid is described. In one embodiment, the method comprises combining lithium hydroxide, picric acid, and a first solvent to form a first solution, combining lithium hydroxide, hydroxylamine hydrochloride, and a second solvent to form a second solution, combining the first solution with the second solution to form a mixture, and cooling the mixture. | 05-05-2011 |
| 564412000 |
Preparing of halogen containing compound directly by halogenation or dehalogenation | 3 |
| 20110004022 | Process for Producing Arylsulfur Pentafluorides - Novel processes for preparing arylsulfur pentafluorides are disclosed. Processes include reacting at least one aryl sulfur compound with a halogen and a fluoro salt to form an arylsulfur halotetrafluoride. The arylsulfur halotetrafluoride is reacted with a fluoride source to form a target arylsulfur pentafluoride. | 01-06-2011 |
| 20130338400 | PROCESS FOR THE SELECTIVE META-CHLORINATION OF ALKYLANILINES - A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%. | 12-19-2013 |
| 20150329472 | HALOGENATED ANILINE AND METHOD FOR PRODUCING SAME - The present invention provides a halogenated aniline represented by formula (I) (wherein each of X | 11-19-2015 |
| 564411000 |
Preparing directly by nitration | 3 |
| 20090093655 | METHOD AND DEVICE FOR PRODUCING AROMATIC AMINES BY HETEROGENEOUS CATALYZED HYDRATION - The present invention relates to a process and an apparatus for preparing aromatic amines by means of a heterogeneously catalysed hydrogenation, wherein the catalyst required for the reaction is applied to the interior wall of one or more reaction channels which are cooled from the outside. | 04-09-2009 |
| 20110054219 | PROCESS FOR THE NITRATION OF O-XYLENE AND RELATED COMPOUNDS - Aromatic compounds such as o-xylene are selectively nitrated by nitric acid in the presence of polyphosphoric acid and a large pore, acidic zeolite or a large pore, hydrophobic molecular sieve. This is an environmentally friendly, commercially viable, high conversion process for the selective nitration of aromatic compounds in the para position. | 03-03-2011 |
| 20110306795 | PROCESS FOR THE PREPARATION OF NITRATED AROMATICS AND MIXTURES THEREOF - A process for the preparation of mononitroaromatics and dinitroaromatics, in which a hydrate melt of at least one metal nitrate M(NO | 12-15-2011 |
| 564310000 |
Hydrazines | 2 |
| 20080306302 | Processes for the Preparation of Tetrakis(F Aryl)Borate Salts - A process for the preparation of organic cation tetrakis( | 12-11-2008 |
| 20100010263 | Process For Preparing Substituted Phenylhydrazines - This invention relates to a process for preparing substituted phenylhydrazines of the formula I wherein R has the meaning as indicated in the description, comprising reacting a dichlorofluorobenzene of the formula II with a hydrazine source selected from hydrazine, hydrazine hydrate and acid addition salts of hydrazine and optionally being carried out in the presence of at least one organic solvent. | 01-14-2010 |
| 564430000 |
Two benzene rings bonded directly to the same oxygen, sulfur, or polysulfide chain | 2 |
| 20130012742 | 4-CYCLOALKYL OR 4-SUBSTITUTED PHENOXYPHENYLAMIDINES AND USE THEREOF AS FUNGICIDES - The present invention relates to 4-cycloalkyl- or 4-aryl-substituted phenoxyphenylamidines of the general formula (I), to a process for their preparation, to the use of the amidines according to the invention for controlling unwanted microorganisms and also to a composition for this purpose, comprising the phenoxyphenylamidines according to the invention. Furthermore, the invention relates to a method for controlling unwanted microorganisms by applying the compounds according to the invention to the microorganisms and/or their habitat. | 01-10-2013 |
| 20130035512 | 2,4,5-TRIAMINOPHENOLS AND RELATED COMPOUNDS - New triaminophenol compositions and related compounds are disclosed, as are processes for their preparation and for the preparation of novel salts and diacid complexes from such compounds. Polymers prepared from these compositions can be made into high strength fiber, film, and tape and are useful in applications such as protective apparel, aircraft, automotive components, personal electronics, and sports equipment. | 02-07-2013 |
| 564413000 |
Preparing directly from hetero ring containing compound | 2 |
| 20090149676 | METHOD OF MANUFACTURING 3, 3' , 4, 4'-TETRAAMINOBIPHENYL - An object of the present invention is to provide an efficient method of manufacturing 3,3′,4,4′-tetraaminobiphenyl with a smaller number of steps. The manufacturing method of 3,3′,4,4′-tetraaminobiphenyl includes reacting the amino groups of a 4-halo-o-phenylenediamine with an inorganic sulfur compound to lead to a 5-halo-2,1,3-benzothiadiazole, subsequently coupling two molecules of the benzothiadiazole together to form a 5,5′-bis(2,1,3-benzothiadiazole) and then deprotecting the amino groups to yield 3,3′,4,4′-tetraaminobiphenyl. | 06-11-2009 |
| 20100130787 | REACTION PLATES WITH ALTERNATIVE, UNORDERED MICROSTRUCTURED SURFACES FOR MICROREACTORS FOR PERFORMING GAS-LIQUID REACTIONS - Reaction plates for microreactors for performing gas-liquid reactions, which consist of falling-film plates with a surface which has a randomly distributed, unordered fine structure or microstructure. | 05-27-2010 |
| 564306000 |
Alicyclic ring or ring system, having plural amino nitrogens attached directly or indirectly thereto by acyclic nonionic bonding, attached indirectly to an aryl ring or ring system by acyclic nonionic bonding | 1 |
| 20080221355 | Method of producing near-infrared absorbing dye compound - A method of producing a near-infrared absorbing dye compound, useful for image forming materials, infrared heat-sensitive recording devices, optical film materials, and the like, containing a process of reacting a compound represented by formula (I) with peroxomonosulfuric acid or its salt. | 09-11-2008 |
| 564441000 |
Nitro or nitroso, bonded directly to carbon, containing | 1 |
| 20100210876 | MICROREACTOR AND LIQUID PHASE CHEMICAL REACTION METHOD USING MICROREACTOR - This invention provides a microreactor comprising a microchamber provided with a raw material introduction port and a product discharge port; wherein solid catalysts are aligned in a line in the longitudinal direction of the microchamber to fill the microchamber. | 08-19-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080200726 | Method For the Continuous Production of an Amine - Processes comprising: providing an aromatic alcohol; and reacting the aromatic alcohol with ammonia at a temperature of 80 to 350° C. in the presence of hydrogen and a heterogeneous catalyst to form a crude reaction product comprising a corresponding primary aromatic amine, wherein the heterogeneous catalyst comprises a catalytically active composition which, prior to reduction with hydrogen, comprises 90 to 99.8% by weight of zirconium dioxide (ZrO | 08-21-2008 |
| 20080262266 | Method for the Production of Xylyendiamine - Process for preparing o-, m- or p-xylylenediamine by hydrogenation of o-, m- or p-phthalonitrile in the presence of a heterogenous catalyst, which comprises feeding a solution of the phthalonitrile in the corresponding isomer of crude xylylenediamine into the hydrogenation reactor, with the crude xylylenediamine having a purity in the range from 85 to 99.7% by weight and a content of higher boilers in the range from 0.3 to 15% by weight. | 10-23-2008 |
| 20080293970 | Process for Synthesis of 4-4'-Diamino-Diphenyl-Sulfone - A new process for the preparation and purification of 4-4′-diamino-diphenyl-sulfone (dapsone) is described. The process described is a three step process comprising a condensation reaction with the synthesis of a thioeter intermediate and then steps of oxidation and reduction in suitable conditions in order to obtain a product with good yield and purity. | 11-27-2008 |
| 20090005596 | Process for Simultaneously Preparing 4,4'- Diphenylmethanediamine and Diphenylmethane Diisocyanate and Polyphenylenepolymethylene Polyisocyanates - The invention provides a | 01-01-2009 |
| 20090030233 | PROCESS FOR THE PRODUCTION OF BIPHENYLS - The present invention relates to a novel process for the preparation of a compound of formula (I): which comprises reacting a compound of formula (II): with a compound of general formula (III): wherein R | 01-29-2009 |
| 20090043132 | Process for Preparing a Substituted Dimethyl-(3-arylbutyl)amine Compound by Homogeneous Catalysis - Compounds of the formula II | 02-12-2009 |
| 20090131720 | PROCESS FOR THE SYNTHESIS OF HYDROXYL ARYLAMINES - A process for forming a hydroxyl triarylamine compound includes reacting a halogenated aryl aldehyde with an aldehyde protecting agent to form a halogenated protected aryl aldehyde compound, and reacting the halogenated protected aryl aldehyde compound with an amine in the presence of a suitable catalyst, then reducing the resulting aldehyde triarylamine to form the hydroxyl triarylamine. | 05-21-2009 |
| 20090281355 | PROCESS FOR THE PRODUCTION OF CARDANOL - A process for the production of a color-stable composition containing cardanol and cardol including (a) subjecting crude, cashew nutshell liquid to distillation to obtain a distillate: (b) reacting the distillate with boric acid to obtain a reaction mixture; and (c) subjecting the reaction mixture to distillation is provided. A method for the production of color-stable phenalkamines including (a) subjecting crude, cashew nutshell liquid to distillation to obtain a distillate; (b) reacting the distillate with boric acid to obtain a reaction mixture; (c) subjecting the reaction mixture to distillation to obtain a main fraction; and (d) reacting the main fraction with an aliphatic amine and formaldehyde to form a color-stable phenalkamine is also provided. | 11-12-2009 |
| 20090326270 | ACTIVATED CARBON MONOLITH CATALYST, METHODS FOR MAKING SAME, AND USES THEREOF - An activated carbon monolith catalyst comprising a finished self-supporting activated carbon monolith having at least one passage therethrough, and comprising a supporting matrix and substantially discontinuous activated carbon particles dispersed throughout the supporting matrix and at least one catalyst precursor on the finished self-supporting activated carbon monolith. A method for making, and a method for use, of such an activated carbon monolith catalyst in catalytic chemical reactions are also disclosed. | 12-31-2009 |
| 20100029985 | Process - A process for the preparation of a compound of Formula (1) wherein Ar represents an optionally substituted hydrocarbyl or an optionally substituted heterocyclyl group comprising an aromatic moiety; and R | 02-04-2010 |
| 20100130785 | PROCESS FOR PREPARING SECONDARY AMIDES BY CARBONYLATION OF A CORRESPONDING TERTIARY AMINE - The present invention relates to a process for preparing secondary amides with good selectivity by carbonylating a corresponding tertiary amine with carbon monoxide in a reaction mixture in the presence of a metal catalyst and in the presence of a halogen containing promoter. The metal catalyst comprises palladium. A same or even a much better catalytic activity can be obtained with palladium than with the much more expensive rhodium, especially when the palladium is used in a low concentration. Moreover, also a good selectivity can be achieved. | 05-27-2010 |
| 20100168474 | PRODUCTION METHOD OF XYLYLENEDIAMINE - A method of producing xylylenediamine by the hydrogenation of dicyanobenzene obtained by the ammoxidation of xylene in a high yield while prolonging the catalyst life. In the method, a molten dicyanobenzene from which compounds having a boiling point lower than that of dicyanobenzene have been removed but compounds having a boiling point higher than that of dicyanobenzene are not removed is dissolved in a solvent containing liquid ammonia. By this dissolution, at least part of dicyanobenzene polymers precipitates as insolubles. The precipitates are removed by a solid-liquid separation. By subjecting the resulting solution containing the dicyanobenzene polymers in a reduced amount to hydrogenation, xylylenediamine is produced in a high yield and the life time of hydrogenation catalyst is prolonged. | 07-01-2010 |
| 20100174114 | PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHANE SERIES - The present invention relates to a process for the preparation of di- and polyamines of the diphenylmethane series, and to the preparation of di- and polyisocyanates of the diphenylmethane series from these di- and polyamines. The di- and polyamines of the diphenylmethane series are prepared by the reaction of aniline and formaldehyde in the presence of hydrochloric acid. In the present invention, the formaldehyde employed is used as an aqueous solution which contains less than 0.001 wt % of metal ions which are divalent and/or more than divalent. | 07-08-2010 |
| 20100185014 | Hydroxylation of Beta-Dicarbonyls with Zirconium Catalysts - The present invention pertains to a process for preparing a compound of Formula I that is achiral, racemic or enantiomerically enriched at the hydroxylation center indicated by * | 07-22-2010 |
| 20100274053 | PROCESS FOR DIASTEREOSELECTIVE CONVERSION OF CHIRAL IMINES - Diastereoselective conversion of chiral imines of the formula I to amines of the formula II | 10-28-2010 |
| 20110021836 | METHOD FOR TREATING RESIDUES FROM THE PRODUCTION OF ISOCYANATES - The invention relates to a process for the work-up of residues from the production of isocyanates, which comprises the steps:
| 01-27-2011 |
| 20110230679 | Reactive Static Mixer - This disclosure relates to a static phosgene mixer, and more generally, to an apparatus for mixing of fluid components such as phosgene and amine during an highly reactive, chemical reaction that is vulnerable to the creation of undesired by-products, and equipment fouling. A guide element is disposed in the static mixer to divert the incoming flow of phosgene around the guide element and create an annular mixing passage in the static mixer. This allows for the use of an increased external radius of the effective phosgene flow while maintaining phosgene velocity by creating a blockage of the flow. The same flow, when transformed from a circular configuration to an annular configuration has an increased external radius, and a greater quantity of MDA jets can be placed along the increased radius, thus increasing the overall homogeneity of the mixture. Further, the cross-sectional area of the annular passage section of phosgene defined around the guide element controls the velocity of phosgene which facilitates the mixing of MDA injected through the jets into the phosgene. | 09-22-2011 |
| 20110237835 | PREPARATION OF 2-(1,3-DIMETHYLBUTYL)ANILINE AND OTHER BRANCHED ALKYL-SUBSTITUTED-ANILINES - Methods are provided for preparing branched alkyl-substituted-anilines, such as 2-(1,3-dimethylbutyl)aniline. Such methods comprise combining aniline, an alkyl-substituted-1-alkene, such as 4-methyl-i-pentene, and an aluminum alkyl catalyst. | 09-29-2011 |
| 20120065430 | Application of Metal Amidoborane and Their Derivatives in Reduction Reaction - Polarized unsaturated functional groups is directly reduced by using metal amidoborane or derivatives thereof through double hydrogen transfer process. Over 99% conversion of reagents and high isolated yield of products can be achieved after reaction. | 03-15-2012 |
| 20120289745 | METHOD FOR PRODUCING AROMATIC AMINES IN THE LIQUID PHASE - The invention relates to a process for the preparation of aromatic amines in the liquid phase by catalytic hydrogenation of the corresponding nitroaromatic compounds in at least two reaction spaces connected in series, wherein at least one reaction space is operated isothermally and at least the reaction space connected downstream thereof is operated adiabatically, and in preferred embodiments the sudden adiabatic temperature change is used for monitoring the reaction. | 11-15-2012 |
| 20130041182 | RECOVERY OF TOLUENE DIAMINE FROM TAR WASTE RESIDUE DISCHARGED FROM SYNTHESIS PROCESS OF TOLUENE DIISOCYANATE - The recovery of toluene diamine from tar waste residues discharged from the synthesis process of toluene diisocyanate comprising steps of: a) grinding the tar waste residues into particles; b) dispersing the particles of tar waste residues into a phase transfer catalyst, alkali and water to obtain a slurry, said phase transfer catalyst being selected from the group consisting of higher alcohols, polyols, polyether compounds and combinations thereof having a boiling point ranging from 120 to 280° C.; c) under the protection of a protective gas, subjecting the slurry to a hydrolysis reaction at a temperature of 120-180° C. under a meter-measured pressure of 0-0.95 MPa to produce toluene diamine; and d) recovering toluene diamine from the hydrolysis reaction solution. The present invention achieves highly efficient recovery of toluene diamine (the recovery rate of TDA is up to 60%) under mild conditions such as 120-180° C. and 0-0.95 MPa (meter-measured pressure), and has a significant economic benefit and friendliness to the environment by recycling the phase transfer catalyst (its recovery rate is up to 99.6%) and water. | 02-14-2013 |
| 20140171687 | PRODUCTION METHOD FOR 2-ALKENYLAMINE COMPOUND - Provided is a method for producing a 2-alkenylamine compound efficiently and at low cost, using a primary or secondary amine compound and a 2-alkenyl compound as the starting materials therefor. The 2-alkenylamine compound is produced by adding Bronsted acid when 2-alkenylating by reacting the primary or secondary amine compound with the 2-alkenyl compound, and 2-alkenylating in the presence of a catalyst comprising a complexing agent and a transition metal precursor stabilized by a monovalent anionic five-membered conjugated diene. | 06-19-2014 |
| 20140200369 | APPARATUS AND PROCESS FOR THE CONTINUOUS REACTION OF LIQUIDS WITH GASES - The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. In the apparatus of the invention, the diversion of an internal circulatory flow in the reactor is effected by means of a diversion pan which is arranged underneath a heat exchanger. | 07-17-2014 |
| 20160159729 | METHOD OF PRODUCING OPTICALLY ACTIVE -AMINOCARBONYL COMPOUND - In a method of producing an optically active β-aminocarbonyl compound using a column reactor, a column for a column reactor is charged with asymmetric catalyst particles to form a column reactor. Compounds for a Mannich-type reaction are introduced into the column reactor to be brought into contact with the asymmetric catalyst particles, to thereby convert the compounds to an optically active β-aminocarbonyl compound. The preferable asymmetric catalyst particles are resin particles that are prepared from a monomer composition containing a proline derivative monomer having an unsaturated bond and a radical polymerization initiator, and that act as a catalyst for an asymmetric Mannich-type reaction. | 06-09-2016 |
