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| Number | Title | Issue Date |
| 7413682 | Antioxidants and methods of making antioxidants Antioxidants for industrial, automotive, and aviation lubricants and methods of making the same are provided. A process using alkylated diphenylamines; alkylated phenyl-α-naphthyl amines; and a metal catalyst to form oxidates is provided. The metal catalyst is a co... | 08/19/2008 |
| 7259392 | Organic thin film transistor array panel and manufacturing method thereof A method of manufacturing a thin film transistor array panel is provided, the method includes: a substrate; a data line disposed on the substrate; an interlayer insulating layer disposed on the data line; a gate line disposed on the interlayer insulating layer and i... | 08/21/2007 |
| 7205265 | Cleaning compositions and methods of use thereof A remover composition and method for removing resists from substrates containing nucleophilic amine and at least one solvent is described. Optionally, a chelating agent can also be included in the remover composition. The remover composition is especially suitable f... | 04/17/2007 |
| 7042163 | Organic electroluminescence display and method of fabricating the same An organic electroluminescence display includes a substrate and a plurality of light emitting parts formed on the substrate, each of the light emitting parts including an organic electroluminescence device and an organic thin film transistor connected to the organic... | 05/09/2006 |
| 6972287 | Method of inhibiting amyloid protein aggregation and imaging amyloid deposits The present invention provides a method of treating Alzheimer's disease using a compound of Formula (I). Also provided is a method of inhibiting the aggregation of amyloid proteins using a compound of the Formula (I) and a method of imaging amyloid deposits, as well... | 12/06/2005 |
| 6387949 | Substituted urea compounds useful in pain management Compounds of general formula I ##STR1## are disclosed and claimed in the present application, as well as their pharmaceutically acceptable salts, pharmaceutical compositions comprising the novel compounds and their use in therapy, in particular in the ... | 05/14/2002 |
| 6365776 | Process for producing aromatic amines The present invention provides an activator in arylamination using a palladium compound as a catalyst, which is superior to conventional phosphines in stability and performance. With the phosphine sulfide as an activator, an arylamination reaction achieve... | 04/02/2002 |
| 6291702 | Azulenyl nitrone spin trapping agents, methods of making and using same The present invention relates to chromotropic nitrone spin trapping agents, methods of making these agents, compositions comprising same, and methods of their use. In particular, azulenyl nitrones of the present invention are effective agents for trapping... | 09/18/2001 |
| 6221414 | Process for treating fruits and vegetables after harvesting, with purification of plant-protection products contaminated with aromatic primary amines The invention relates to a process for treating fruit and vegetables after harvesting, using, as plant-protection treatment composition, the mixture with water of the reaction medium resulting from the implementation of steps of purification of a plant-pr... | 04/24/2001 |
| 6218576 | Process for producing a diarylamine Described is a process for producing a diarylamine, which comprises subjecting an arylamine to condensation reaction in the co-presence of anhydrous aluminum chloride and anhydrous calcium chloride. The process permits the production of a diarylamine in a... | 04/17/2001 |
| 6197825 | Azulenyl nitrone spin trapping agents, methods of making and using same The present invention relates to chromotropic nitrone spin trapping agents, methods of making these agents, compositions comprising same, and methods of their use. In particular, azulenyl nitrones of the present invention are effective agents for trapping... | 03/06/2001 |
| 5902901 | Arylamine processes A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N,N-bis(3,4-dimethylphenyl)amine and an iodobiphenyl in the presence of a ligand copper catalyst, and wherein the ligand is selected from the ... | 05/11/1999 |
| 5723671 | Arylamine processes A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of an aminobiphenyl and an iodoxylene in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consisting of ... | 03/03/1998 |
| 5723669 | Arylamine processes A process preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N,N-bis(3,4-dimethylphenyl)amine and an iodobiphenyl in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consis... | 03/03/1998 |
| 5705697 | Arylamine processes A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N-(3,4-dimethylphenyl)-4-biphenylamine and an iodoxylene in the presence of a ligated copper catalyst, and wherein the ligand is selected fro... | 01/06/1998 |
| 5654483 | Process for producing alkoxy-substituted triphenylamines A process for producing an alkoxy-substituted tri-phenylamine comprising reacting an alkoxy-substituted cyclohexanone with a diphenylamine or an aniline, while forming said cyclohexanone in the same system from an alkoxy-substituted phenol by using said p... | 08/05/1997 |
| 5648538 | Process for preparing diarylamines from arylamines A process for preparing diarylamines in high yield, in which diarylamines are prepared from arylamines in the presence of a solid acid catalyst. The solid acid catalyst with good stability and regeneration ability consists of H-type beta zeolite and activ... | 07/15/1997 |
| 5602284 | Process for separating off aminobiphenyl from diphenylamine Aminobiphenyl (ABP) can be separated off from diphenylamine (DPA) by treating the DPA to be purified at elevated temperature with a substance in which oxygen is bonded by a double bond to a C atom, an N atom or another O atom and then separating off the D... | 02/11/1997 |
| 5545752 | Process for the preparation of diphenylamine or nucleus-substituted derivative thereof A processes for the preparation of diphenylamine or a nucleus-substituted derivative thereof, which comprise, upon feeding into a reaction system a phenol compound and reacting in the reaction system a cyclohexanone compound with an aniline compound in th... | 08/13/1996 |
| 5495049 | Triarylamine compounds useful in electrophotographic photoreceptors A triarylamine compound useful as a charge transport material of an electrophotographic photoreceptor, which represented by formula (I) ##STR1## wherein Ar1 and Ar2 each represents a phenyl group or a condensed ring group.... | 02/27/1996 |
| 5451702 | Process for preparing substituted aromatic amines A process for preparing substituted aromatic amines is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent system, reacting the nucleophilic compound and the azo containing compo... | 09/19/1995 |
| 5344987 | Process for preparing diphenylamines Optionally substituted diphenylamines can be obtained by reacting optionally substituted anilines with optionally substituted cyclohexanones over a supported catalyst at 200°-450° C. and 0.1-20 bar, the supported catalyst containing one or more metals h... | 09/06/1994 |
| 5072045 | Process for the catalytic alkenylation of arylamines with conjugated dienes The invention relates to an improved process for producing alkenylated aromatic amines which involves the catalytic reaction of an aromatic amine with a diene. The improvement resides in using a solvent in which the aromatic amine and diene are soluble in... | 12/10/1991 |
| 4952731 | Process for producing diphenylamines or N,N'-diphenyl-phenylenediamines Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in th presence of a hydroge... | 08/28/1990 |
| 4814504 | Process for the production of diphenylamine Diphenylamine is produced by contacting aniline with an alumina catalyst having at least about 30 percent by volume of its total porosity in the form of pores having a diameter of between about 120 and about 200 Angstroms and a sulfur content, as measured... | 03/21/1989 |
| 4804783 | Process for producing diphenylamines or N,N'-diphenyl-phenylenediamines Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrog... | 02/14/1989 |
| 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 |
| 4760186 | Preparation of substituted aromatic amines A process for the preparation of substituted aromatic amines comprising (1) contacting a primary aromatic amine with an oxidizing agent in a homogeneous solution containing water, an oxidizable water-miscible organic solvent and a base, and (2) reducing t... | 07/26/1988 |
| 4454348 | Manufacture of diphenylamine Diphenylamine is made by the reaction in the vapor phase of two moles of aniline with the consequent evolution of ammonia; surprisingly high yields and selectivities are obtained by maintaining a significant concentration of ammonia in the catalyst zone, ... | 06/12/1984 |
| 4316988 | N-Alkyldiphenylamines A series of new diphenylamines have small alkyl substituents on the amino nitrogen and are useful as intermediates for the preparation of rodenticidal diphenylamines. One phenyl ring has 2,4-dinitro-6-trifluoromethyl substitution, and the other is substit... | 02/23/1982 |
| 4265833 | Process for the preparation of hydroxy-diphenylamines A process for the preparation of hydroxy-diphenylamines by condensation of dihydroxybenzene with an excess amount of primary aromatic amine in the presence of a catalytic amount of an acid at elevated temperature is described wherein the excess aromatic a... | 05/05/1981 |
| 4256669 | Para-aminophenol derivatives A process for the preparation of diaryl para-phenylenediamines from a crude para-aminophenol solution such as obtained by the catalytic hydrogenation of nitrobenzene in an aqueous acid reaction medium. The process comprises contacting the para-aminophenol... | 03/17/1981 |
| 4100195 | Process for preparing diphenylamine in the presence of a boron/fluorine compound and water Diphenylamine is made by heating aniline under pressure and temperatures of 250°-400° C in the presence of a boron/fluorine compound and water.... | 07/11/1978 |
| 3944613 | Process for preparing diphenylamine from aniline In repairing diphenylamine by reacting aniline in a liquid phase in the presence of a catalyst at a temperature of about 320° to about 370°C, a process which is characterized in that said catalyst is an amorphous synthetic silica-alumina catalyst contai... | 03/16/1976 |
