| Patents for C07C 253 - Preparation of carboxylic acid nitriles (14,307) |
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| 02/29/2000 | US6031123 Process for stabilizing cyanohydrins |
| 02/23/2000 | CN1245489A Monoolefinc C5-mononitriles, method for production and use thereof |
| 02/17/2000 | WO2000008011A1 Process for the preparation of optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivatives |
| 02/17/2000 | DE19836474A1 Verfahren zur Herstellung von 3-Cyano-3,5,5-trimethyl-cyclohexanon Process for the preparation of 3-cyano-3,5,5-trimethyl-cyclohexanone |
| 02/16/2000 | CN1244524A P-fluorobenzaldehyde process of cyhalofop-butyl production |
| 02/15/2000 | US6025515 Stabilizing with 2,6-di-tert-butyl-4-methylphenol, 3,3,3',3'-tetramethyl-1,1'-spirobisindane-5,5',6,6'-tetrol, 2,6-di-tert-butylphenol, 2,4,6-tri-tert-butylphenol, 2,6-di-tert-butyl-4-aminephenol, 2,6-di-tert-butylphenol |
| 02/15/2000 | CA2164470C Electrochemical process for the preparation of transition metal and phosphine-containing catalysts |
| 02/10/2000 | WO2000006532A2 Process for the preparation of r-(-)-carnitine |
| 02/09/2000 | EP0977729A1 3-cyano-2,4,5-trifluoro-benzoyl fluoride and intermediate products for the production thereof |
| 02/08/2000 | US6023000 Process for the preparation of aldehydes and ketones |
| 02/08/2000 | US6022988 Preparation of 3-cyano-3, 5, 5-trimethylcyclohexanone |
| 02/03/2000 | WO2000005199A1 Improved arylamine synthesis |
| 02/03/2000 | WO2000005191A1 Improved method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine |
| 02/03/2000 | CA2337858A1 Improved method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine |
| 02/03/2000 | CA2336976A1 Improved arylamine synthesis |
| 02/02/2000 | EP0976702A1 Method for inhibiting polymerization of a vinyl compound |
| 02/02/2000 | CN1243121A Noval process for synthesizing 3,3-dialkoxyl propionitrile |
| 02/02/2000 | CN1243115A Polymerization inhibiting method for ethenyl chemical compound |
| 02/01/2000 | US6020525 (2S,2'R,3'R)-2-(2,3-dicarboxyl-cyclopropyl)-glycine (DCG-1/4) and 3 H-DCG-1/4 and to process for the preparation thereof |
| 02/01/2000 | US6020517 Process for production of benzonitrile and benzyl alcohol |
| 02/01/2000 | US6020516 Hydrocyanation of diolefins and isomerization of nonconjugated 2-alkyl-3-monoalkenenitriles |
| 02/01/2000 | US6020515 Process for the preparation of malononitrile |
| 01/27/2000 | WO2000003965A1 Derivatives of 1-oxyl-4-hydroxy- or 4-amino-2,2,6,6-tetramethylpiperidine as polymerization inhibitors for (meth)acrylate monomers |
| 01/27/2000 | DE19832529A1 Production of 6-amino-capronitrile and hexamethylene diamine from adiponitrile involves work-up by distillation with final recovery of adiponitrile |
| 01/26/2000 | EP0973729A1 A process for the preparation of 4-bromomethyl diphenyl compounds |
| 01/26/2000 | EP0793642B1 Process for preparing halogenated methyl benzoyl cyanides |
| 01/26/2000 | CN1242358A Process for prepn. of optically pure aminoalcohol |
| 01/25/2000 | US6018081 Hydroformylation of an unsaturated compound with carbon monoxide and hydrogen in the presence of a catatyst system comprising iridium or rhodium and bidentate organic phosphite ligand of given formula; catalyst selectivity |
| 01/25/2000 | US6017846 Highly active and selective catalysts for the production of unsaturated nitriles, methods of making and using the same |
| 01/20/2000 | WO2000002887A2 Ligands for metals and metal-catalyzed processes |
| 01/19/2000 | EP0971876A1 A process for continuous hydrogenation of adiponitrile |
| 01/19/2000 | EP0710151B1 Method of improving oxidation and ammoxidation catalysts |
| 01/19/2000 | CN1241993A Process for the preparation of an aldehyde |
| 01/18/2000 | CA2003919C Preparation of difluorobenzenes containing electron withdrawing substitutents |
| 01/12/2000 | EP0970947A1 Process for producing butyric ester derivatives |
| 01/12/2000 | EP0970942A1 Process for the simultaneous preparation of acrylonitrile and acrylic acid |
| 01/12/2000 | EP0970045A1 Preparation of 4-cyano-4'-hydroxy biphenyl |
| 01/11/2000 | US6013840 Using a faujasite type zeolite, a y zeolite or a zeolite day catalyst; in particular, making acetylveratrol from veratrol; simplification;efficiency |
| 01/11/2000 | US6013827 For treating bronchial asthma, alleregies, inflammations |
| 01/11/2000 | US6013826 Reacting alpha-halogeno carboxylic acid derivative with an alkene in the presence of catalyst |
| 01/11/2000 | US6013825 Ammoxidation of organic compound in fluidized bed with oxide catalyst and ammonia; introducing product to quench tower; reacting unreacted ammonia with acid to form ammonium salt to produce unsaturated nitrile such as acrylonitrile |
| 01/05/2000 | EP0968177A1 Method for producing aromatic nitriles |
| 01/05/2000 | CN1240423A Method for producing trifluoroacetoacetic acid anilides |
| 12/29/1999 | EP0966445A1 Processes for preparing pesticidal intermediates |
| 12/29/1999 | EP0966432A1 Preparation of 4-cyano-4'-hydroxy biphenyl |
| 12/29/1999 | EP0763011B1 Process for the preparation of unsaturated amino compounds |
| 12/28/1999 | US6008401 Process for producing an optically active compound |
| 12/23/1999 | WO1999065606A1 Catalyst comprising a complex of a metal of subgroup viii based on a phosphinite ligand, and a method for hydroformylation |
| 12/23/1999 | WO1999065583A1 Process for recovery of olefinically unsaturated nitriles |
| 12/23/1999 | DE19827232A1 Katalysator, umfassend einen Komplex eines Metalls der VIII. Nebengruppe auf Basis eines Phosphinitliganden und Verfahren zur Hydroformylierung und Hydrocyanierung Catalyst comprising a complex of a metal of the VIII. Subgroup on the basis of a phosphinite and process for the hydroformylation and hydrocyanation |
| 12/22/1999 | EP0964847A1 Method for separating an imine from a mixture containing an amine and an imine |
| 12/22/1999 | EP0800506B1 Solventless process for making 2,6-difluorobenzonitrile |
| 12/21/1999 | US6005151 Reacting haloaromatic compound with olefin compound using palladium complex catalyst |
| 12/21/1999 | US6005134 Process for the preparation of aliphatic nitriles |
| 12/16/1999 | WO1999064391A1 New process |
| 12/16/1999 | WO1999064155A1 Catalyst comprising a complex of a metal from subgroup viii based on a bidentate phosphonite ligand, and method for producing nitriles |
| 12/15/1999 | EP0963369A1 Method for separating 6-aminocapronitrile from mixtures containing 6-aminocapronitrile and an imine |
| 12/14/1999 | US6002040 Providing aqueous stream by means of liquid spray nozzles |
| 12/09/1999 | WO1999062871A1 New 3-aryl propionic acid derivatives and analogs |
| 12/09/1999 | WO1999062855A1 Hydroformylation of olefins using supported bis(phosphorus) ligands |
| 12/09/1999 | DE19825212A1 Katalysator, umfassend einen Komplex eines Metalls der VIII. Nebengruppe auf Basis eines zweizähnigen Phosphonitliganden und Verfahren zur Herstellung von Nitrilen Catalyst comprising a complex of a metal of the VIII. Subgroup based on a bidentate phosphonite ligands and methods for preparing nitriles |
| 12/09/1999 | CA2334374A1 New 3-aryl propionic acid derivatives and analogs |
| 12/09/1999 | CA2330153A1 Hydroformylation of olefins using supported bis(phosphorus) ligands |
| 12/08/1999 | EP0961768A1 Method for separating 6-aminocaproic acid nitrile from mixtures containing 6-aminocaproic acid nitrile and an imine |
| 12/08/1999 | CN1047165C Process for reduction of waste material during manufacture of acrylonitrile |
| 12/08/1999 | CN1047164C Process for production of acrylonitrile dimers |
| 12/08/1999 | CN1047163C Hydrocyanation process and multidentate phosphite and nickel catalyst composition therefor |
| 12/07/1999 | US5998652 Process for preparing 2-cyanobiphenyl compound |
| 12/07/1999 | CA2101524C Inhibiting popcorn polymer formation with esters of inorganic acids |
| 12/02/1999 | WO1999061411A1 Processes for producing cyanophenyl derivatives |
| 12/02/1999 | WO1999048872A3 Method for separating an azepine derivative from a mixture containing an amine and an azepine derivative |
| 12/01/1999 | EP0804412B1 Hydrocyanation of diolefins and isomerization of nonconjugated 2-alkyl-3-monoalkenenitriles |
| 12/01/1999 | CN1237154A Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine |
| 12/01/1999 | CN1237153A Process for manufacture of aliphatic alpha, omega amino nitriles |
| 12/01/1999 | CN1046867C Reactivating or regenerating method for molybdenum-bismuth-iron system ammoxidation catalyst |
| 11/30/1999 | US5994259 Catalysts for the ammoxidation of alkanes |
| 11/30/1999 | US5993687 Acrylonitrile solutions of maleimides, method for preparation thereof, and acrylonitrile based copolymers obtained by use of the solutions |
| 11/25/1999 | WO1999060003A1 Novel furylphosphines and organometallic complexes containing them |
| 11/25/1999 | WO1999059963A1 Recovery of organics from process flare header |
| 11/25/1999 | WO1999059962A1 Method for preparing aminonitrile and diamine |
| 11/25/1999 | WO1999044982A3 Method for hydrogenating aliphatic alpha-, omega-dinitriles |
| 11/25/1999 | CA2333183A1 Novel furylphosphines and organometallic complexes containing them |
| 11/25/1999 | CA2332613A1 Method for preparing aminonitrile and diamine |
| 11/25/1999 | CA2332502A1 Recovery of hydrogen cyanide during the manufacture of acrylonitrile or methacrylonitrile |
| 11/24/1999 | CN1236355A Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine |
| 11/24/1999 | CN1236353A Process for preparing a linear aldehyde |
| 11/24/1999 | CN1046707C 2-cyanoacrylic acid esters |
| 11/24/1999 | CN1046639C Method for deagglomerating and re-exposing catalyst in a fluid bed reactor |
| 11/23/1999 | CA2152464C Process for preparing ammoxidation catalysts |
| 11/18/1999 | WO1999058509A1 Method for producing isoxazoline-3-yl-acyl benzene |
| 11/18/1999 | WO1999051568A3 A CONVERGENT SYNTHESIS OF α-ARYL-β-KETONITRILES |
| 11/18/1999 | CA2727762A1 Process for synthesizing thioether precursors of herbicides by reaction of anilines with dialkyl disulfides in the presence of an alkyl nitrite |
| 11/17/1999 | EP0957084A2 Process for the purification of aqueous acrylonitrile process streams |
| 11/17/1999 | EP0957083A2 Process for stabilising cyanhydrines |
| 11/17/1999 | CN1235154A Oxidant reduction by manipulation and/or treatment of aqueous acrylonitrile process streams |
| 11/16/1999 | US5986127 Aminonitrile production |
| 11/16/1999 | US5986126 Process for the production of 6-aminocapronitrile and/or hexamethylenediamine |
| 11/16/1999 | US5985788 Ammoxidation process comprising catalytically oxidizing at least one saturated hydrocarbon selected from the group consisting of propane and isobutane with a mixed gas containing molecular oxygen and ammonia in the presence of a |
| 11/11/1999 | WO1999057109A1 Process for producing 6-cyanomethyl-1,3-dioxane-4-acetic acid derivatives |
| 11/11/1999 | WO1999056699A2 Main-group metal-based asymmetric catalysts and applications thereof |