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| Number | Title | Issue Date |
| 7408085 | Rapid cost effective method for the synthesis of TPD-type arylamines A process for forming a tetra(aryl)-biphenyldiamine compound, including reacting a dibromobiphenyl compound and a diarylamine compound in the presence of a palladium ligated catalyst and a base. ... | 08/05/2008 |
| 7402700 | Rapid, cost effective method for synthesis of diarylamine compounds A process for forming a diarylamine compound, including reacting an aniline and an arylbromide in the presence of a palladium ligated catalyst and a base. ... | 07/22/2008 |
| 7381844 | Hydrogenation process of chlorinated nitrobenzene A hydrogenation process of chloronitrobenzene. The hydrogenation process comprises the steps of producing a nanosized boron-containing nickel catalyst, wherein a ratio of the amount of the boron atom to the amount of the nickel atom in the nanosized boron-containing... | 06/03/2008 |
| 7332630 | Arylamine processes A process for the preparation of a tertiary arylamine compound, comprising reacting an arylhalide, such as an arylbromide, and an arylamine in an alkylene glycol compound in the presence of a catalyst. ... | 02/19/2008 |
| 7235694 | Process for preparing 4-aminodiphenylamine A process for preparing 4-aminodiphenylamine having the steps of reacting nitrobenzene and aniline in the presence of a complex base catalyst, hydrogenating the reaction mixture with hydrogen, a powdery composite catalyst, and a hydrogenation solvent; separating, re... | 06/26/2007 |
| 7176333 | Process for preparing 4-aminodiphenylamine The present invention discloses a process for preparing 4-aminodiphenylamine, which process uses nitrobenzene and aniline as raw materials, a complex base catalyst as condensation catalyst and a powdery composite catalyst as hydrogenation catalyst, and comprises fiv... | 02/13/2007 |
| 7084302 | Process for preparing 4-aminodiphenylamine A process for preparing 4-aminodiphenylamine using nitrobenzene and aniline as raw materials, a complex base catalyst as the condensation catalyst, and a powdery composite catalyst as the hydrogenation catalyst. The process has 5 process stages including condensatio... | 08/01/2006 |
| 6946577 | Process for the production of aminodiphenylamines The present invention relates to a process for the production of aminodiphenyl-amines, such as 4-aminodiphenylamine (4-ADPA), by reacting nitrohalogenated benzenes with anilines in the presence of a base as well as a copper-phosphorus complex, followed by hydrogenat... | 09/20/2005 |
| 6902832 | Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these A charge transporting material, a light emitting material and an organic electroluminescent device having high efficiency using a specified diazapentacene derivative represented by the following general formula (1): (i... | 06/07/2005 |
| 6888029 | Transition-metal-catalyzed carbon-nitrogen bond-forming methods using carbene ligands The present invention relates to a process for the preparation of N-aryl amine and N-aryl amide compounds. Generally, the process of the present invention involves reacting a compound having a primary or secondary amino or amido group with an arylating compound, in ... | 05/03/2005 |
| 6815562 | Process for the preparation of nitrodiphenylamines The present invention relates to a process for the preparation of nitrodiphenylamines by reaction of nitrohalogens with anilines, a base and a catalyst, and to a process for the preparation of aminodiphenylamine by hydrogenation of the nitrodiphenylamine intermediat... | 11/09/2004 |
| 6547899 | Synthesis of fine-grained TATB A method for producing fine-grained triamino-trinitrobenzene (TATB) powders having improved detonation-spreading performance and hence increased shock sensitivity when compared with that for ultrafine TATB is described. A single-step, sonochemical aminati... | 04/15/2003 |
| 6476265 | Method for producing aryl oligoamines In a process for preparing aryl oligoamines, an amine is reacted with an activated aromatic and a base in a temperature range from 0 to 150° C. in the presence of a palladium component and a phosphine ligand. The aryl oligoamines are obtained simply and in go... | 11/05/2002 |
| 6316673 | Process for producing aminodiphenylamines The present invention relates to the production of aminodiphenyl-amines resulting in good yields and high purity levels when aromatic amines are reacted with nitrohalobenzenes in the presence of a palladium catalyst and a base and the product thus obtaine... | 11/13/2001 |
| 6235937 | Process for the preparation of nitrodiphenylamines The invention relates to a process for the preparation of nitrodiphenylamines by reaction of nitrohalogenobenzenes with aromatic amines in the presence of a palladium catalyst and a base, the base being ground and/or dried before its use.... | 05/22/2001 |
| 6137010 | Method for preparing 4-nitrodiphenylamine and 4-nitrosodiphenylamine from carbanilide This invention relates to a process for preparing 4-nitrodiphenylamine and 4-nitrosodiphenylamine to be used for 4-aminodiphenylamine as an intermediate of antiozonant, wherein carbanilide is reacted with nitrobenzene in the presence of an appropriate bas... | 10/24/2000 |
| 6077973 | Process for the preparation of anilines which contain fluorine and new anilines which contain fluorine Anilines which contain fluorine in a side chain are prepared by reacting chlorinated aromatic compounds with ammonia in the presence of a catalyst and optionally water at 200 to 280° C. Some of the trifluoromethoxyanilines which may be prepared in this w... | 06/20/2000 |
| 5728881 | Process for preparing trifluralin A process is provided for preparing 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine from 4-chlorotrifluoromethylbenzene. The process includes a two stage nitration and an amination step. Ethylene dichloride is utilized as a diluent and solven... | 03/17/1998 |
| 5684203 | Process for the preparation of nitro-substituted arylamines Nitroaromatics can be aminated using urea in the presence of bases and oxygen.... | 11/04/1997 |
| 5672754 | Process for the preparation of aminodiphenylamine compounds The invention relates to a process for the preparation of compounds of formula ##STR1## wherein R1 is hydrogen, C1 -C4 alkyl or sulfo, and R2 is hydrogen or C1 -C4 alkyl, which process... | 09/30/1997 |
| 5484953 | O-phenylenediamines containing fluoroalkyl(ene) groups Novel o-phenylenediamines of the formula containing fluoroalkyl(ene) groups ##STR1## in which the symbols used have the meaning given in the description, processes for their preparation and their use as intermediates.... | 01/16/1996 |
| 5434308 | Method for the manufacture of 3,4'-diaminodiphenyl ether A method of dehydrogenating 3-amino-2-cyclohexene-1-one with a supported palladium or palladium-platinum catalyst in a solvent in the presence of base to produce 3-aminophenol and its use directly without purification to produce 3,4'-oxydianiline.... | 07/18/1995 |
| 5414128 | Process for the preparation of N-substituted nitro-p-phenylenediamines The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with amines of the general formula III ##STR3## wherein R1 | 05/09/1995 |
| 5405999 | Process for preparing ethalfluralin A process for the preparation of the unsaturated dinitroaniline, ethalfluralin having a level of nitrosamines lower than 0.5 ppm and essentially free from the compound of addition of halogenhydric acid on the methallyl double bond, by treatment with aqueo... | 04/11/1995 |
| 5210303 | Process for producing benzylamines A process for producing a benzylamine which comprises reacting a benzyl halide with an aqueous ammonia solution in the presence of an aromatic aldehyde represented by the formula: ##STR1## wherein R represents a hydrogen atom, a halogen atom or a low... | 05/11/1993 |
| 5144076 | Preparation of 3,5-diamino benzotrifluoride 3,5-Diaminobenzotrifluoride can be produced, in a single step, by reacting 4-chloro-3,5-dinitro benzotrifluoride in a suitable solvent, with hydrogen gas, in the presence of a catalyst comprising palladium on a suitable carrier, and in the presence of a s... | 09/01/1992 |
| 4997987 | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from 3,5-dichloroanisole Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) from 3,5-dichloroanisole. Nitration of 3,5-dichloroanisole under relatively mild conditions gave 3,5-dichloro-2,4,6-trinitroanisole in high yield and purity. Ammonolysis of this latter compound ga... | 03/05/1991 |
| 4990673 | Process for the preparation of 4,4'-dinitrodiphenylamine Process for the preparation of 4,4'-dinitrodiphenylamine which comprises reacting 1 mole of 4-halonitrobenzene with about 1 to about 3 moles of an alkali metal cyanate in the presence of about 0.5 to about 5 moles of water in dimethylsulfoxide at temperat... | 02/05/1991 |
| 4952733 | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from 3,5-dichloranisole Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) from 3,5-dichloroanisole. Nitration of 3,5-dichloroanisole under relatively mild conditions gave 3,5-dichloro-2,4,6-trinitroanisole in high yield and purity. Ammonolysis of this latter compound ga... | 08/28/1990 |
| 4910341 | Process for preparing N,N'-disubstituted nitro-para-phenylenediamines, N,N'-disubstituted nitro-para-phenylenediamines, and intermediate oxazolidones The present invention relates to a process for preparing a N,N'-disubstituted nitro-para-phenylenediamine (I) according to the following scheme: ##STR1## X denoting a halogen and R a lower alkyl, lower mono- or polyhydroxyalkyl, lower alkoxyalky... | 03/20/1990 |
| 4782185 | Process for the preparation of 4-nitrodiphenylamines With a far shorter reaction time, azeotropic distillation of the water in the condensation of 4-nitrohalogenobenzenes and primary aromatic amines or formyl derivatives thereof in the presence of potassium carbonate and, if appropriate, copper compounds ca... | 11/01/1988 |
| 4771067 | Process for the production of 4-nitrodiphenylamines 4-nitrodiphenylamines may be produced by an improved process from 4-halo nitrobenzenes and primary aromatic amines in the presence of potassium carbonate and copper compounds, wherein (1) mono- and di-carboxylic acid amides or nitriles are added; (2) from 3 to... | 09/13/1988 |
| 4683332 | Para-nitrodiphenylamine synthesis There is disclosed a process for the synthesis of para-nitrodiphenylamines via the Formanilide Process wherein the improvement is characterized in that a specific catalyst is utilized. More specifically, a zinc (II) compound (zinc in the plus two oxidatio... | 07/28/1987 |
| 4670595 | Process for the production of 4-nitrodiphenylamines The reaction of 4-nitrohalogenbenzenes with primary aromatic amines in the presence of potassium carbonate and copper compounds to 4-nitrodiphenylamines gives better yield of purer products when synthetic polyamides are added.... | 06/02/1987 |
| 4665233 | Process for the preparation of 4-nitrodiphenylamines An improved process for the preparation of 4-nitrodiphenylamines by the reaction of 4-nitrohalobenzenes with primary aromatic amines in the presence of potassium carbonate and copper compounds is characterized in that sulpholane dimethylsulphone, dimethyl... | 05/12/1987 |
| 4665232 | Process for the preparation of 4-nitrodiphenylamines The reaction of 4-nitrohalobenzenes with primary aromatic amines in the presence of potassium carbonate and copper compounds to produce 4-nitrodiphenylamine results in products with improved purity and yield if (1) carbonic acid amides or their derivative... | 05/12/1987 |
| 4614817 | Making nitrodiarylamines Nitrodiarylamines, useful as intermediates, are produced by combining a formyl derivative of an aromatic primary amine with a nitrohaloarene, at condensation temperature for forming nitrodiarylamine, and adding an alkoxide or cycloalkoxide of an alkali me... | 09/30/1986 |
| 4609759 | Process for preparing amino-2, 4-dinitroaromatic herbicides This invention pertains to a process for producing 2,6 dinitroaniline derivates which are suited as intermediates for herbicides. The process involves the formation of a 1,2,6-trinitro-aromatic isomer and the subsequent nucleophilic displacement of the 1-... | 09/02/1986 |
| 4521622 | Process for producing aromatic amine A process for producing an aromatic amine from an aromatic halide and ammonia, characterized by comprising the following steps (1), (2) and (3): step (1): reacting the aromatic halide with ammonia in the presence of water by using a catalyst comprising a coppe... | 06/04/1985 |
| 4481371 | Method of making fine-grained triaminotrinitrobenzene A method of forming a fine-grained species of the insensitive high explosive sym-triaminotrinitrobenzene (TATB) without grinding. In accordance with the method, 1,3,5-trichloro-2,4,6-trinitrobenzene (TCTNB) is aminated by reaction with gaseous ammonia in ... | 11/06/1984 |
