| Patents for C07B 63 - Purification; Separation specially adapted for the purpose of recovering organic compounds; Stabilisation; Use of additives (4,057) |
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| 01/09/2003 | CA2451599A1 Use of membranes to separate organic liquids having different polarities |
| 01/08/2003 | EP1273330A1 Sublimation purifying method and apparatus |
| 01/08/2003 | EP1272568A2 Recovery of compounds using a natural adsorbent |
| 01/08/2003 | CN1390153A Method of the production of particles |
| 01/07/2003 | US6504066 Reduction of halogen containing carbocyclic ketones, to form chemical intermediates which are substance-P receptor antagonists useful as antiinflammatory and antiemetic agents and for treatment of psychological disorders |
| 01/03/2003 | WO2003000637A1 PROCESS FOR PREPARATION OF α,α-BIS(HYDROXYMETHYL)- CARBOXYLIC ACIDS |
| 01/02/2003 | EP1269170A1 Reaction and separation methods |
| 01/02/2003 | EP1268050A2 Dosing form for a polymer support, use of said dosing form in organic chemical synthesis and method for production of said dosing form |
| 12/31/2002 | US6500347 Oxidizing para-xylene with molecular oxygen in a solvent containing catalyst, acetic acid and water as solvents, and crystals of crude terephthalic acid are recovered by feeding a flash vapor, obtained by depressurizing oxidation liquid |
| 12/19/2002 | WO2002100802A2 Fluorous triphase and other multiphase systems |
| 12/19/2002 | US20020190238 Stabilization of monomers by compositions based on alkylhydroxylamines |
| 12/19/2002 | US20020189927 Isolation of a treating fluid or chemical treatment from a treatment column and taking out a formed product by liquefication after evaporation |
| 12/18/2002 | EP1265832A2 Separation of reaction products containing organophosphorus complexes |
| 12/18/2002 | EP1265831A2 Separation of reaction products containing organophosphorus complexes |
| 12/18/2002 | EP1265830A2 Separation of reaction products containing organophosphorus complexes |
| 12/18/2002 | EP1265684A1 Purification device and purification method |
| 12/18/2002 | CN1096441C Compression method of ethylenically unsaturated monomers and method for preparing copolymer |
| 12/17/2002 | CA2225798C Liquid medium extraction purification method |
| 12/12/2002 | US20020188157 Separating unreacted ammonia and unreacted carbon dioxide from the reaction mixture by stripping the mixture with the carbon dioxide feedstock at a pressure equal to the urea synthesis pressure |
| 12/11/2002 | EP1264819A1 Process for inhibiting polymerization of a vinyl compound |
| 11/28/2002 | WO2002094884A2 Methods and compositions for inhibiting polymerization of vinyl monomers |
| 11/28/2002 | WO2002094763A1 Methods and compositions for inhibiting polymerization of vinyl monomers |
| 11/28/2002 | WO2002094432A1 Method for carrying out the distillation or reactive distillation of a mixture containing at least one toxic constituent |
| 11/28/2002 | WO2002074718A3 Ionic liquids as selective additives for the separation of close-boiling or azeotropic mixtures |
| 11/28/2002 | US20020174803 Method for removing coumafos from beeswax |
| 11/28/2002 | DE10125431A1 Verfahren zur Abtrennung von Coumafos aus Bienenwachs A process for separating Coumafos of beeswax |
| 11/28/2002 | DE10124386A1 Distillation column for mixtures, with toxic component, has packing with variable inner geometry to form lower bubbling layer with dispersed gas phase and an upper film layer with a continuous gas phase |
| 11/28/2002 | CA2446996A1 Methods and compositions for inhibiting polymerization of vinyl monomers |
| 11/27/2002 | EP1260573A1 Method for separating Coumafos from beeswax |
| 11/27/2002 | EP0931064B1 Stabilised monomer composition |
| 11/27/2002 | CN1381459A Deacidified gingko leaf and its extract and its preparing process and application |
| 11/20/2002 | EP1258522A2 A method of controlling the oxidation of chemicals during storage using noble gases |
| 11/14/2002 | WO2002090299A2 Method for the production of a purified melt of at least one monomer |
| 11/13/2002 | EP1255697A1 Method for recovering rhodium from reaction products of oxosynthesis |
| 11/13/2002 | CN1094125C Process for preparing high purity carane aldehyde |
| 11/12/2002 | US6478930 Stream of liquid stripping component (water), heat from reboiler vaporizes stream, removing vapor stream containing impurities overhead, then removing purified organic product |
| 11/12/2002 | CA2259062C Method of distributing a fluid in the fluid bed of a fluid bed reactor |
| 11/07/2002 | WO2002088054A1 Method of inhibiting polymerization of aromatic vinyl |
| 11/07/2002 | US20020162796 Method of preparing refined organic compound for use in photography with improved liquid-liquid extraction from organic reaction mixture |
| 11/05/2002 | US6476262 Reacting ammonia and carbon dioxide |
| 11/05/2002 | US6476185 Preparation of an organic compound by a condensation reaction |
| 11/05/2002 | US6475524 Composition of matter |
| 11/05/2002 | US6475348 Mixture of substances containing compounds with vinyl groups and stabilizers |
| 10/31/2002 | WO2000034220A3 Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization |
| 10/31/2002 | US20020158020 Process for the separation of organic substances from an aqueous mixture |
| 10/31/2002 | EP1144353A3 Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization |
| 10/30/2002 | EP1252127A1 A process for the crystallization of non-sucrose substances |
| 10/30/2002 | CN1093525C Process for separating oxidation reaction product and oxidation catalyst |
| 10/30/2002 | CN1093426C Distilling apparatus and distilling method |
| 10/24/2002 | US20020152629 Process for removing trace solvent from a material |
| 10/23/2002 | CN1376140A Process for separating o-and P-substituted benzene compounds |
| 10/23/2002 | CN1375499A Method of extracting and separating several components from mangsteen |
| 10/23/2002 | CN1093115C Dicarboxylic acid crystallizates |
| 10/22/2002 | US6469208 Crystalline iohexol containing residual solvents (isopropyl alcohol) above 100 ppm is suspended in a combination of ethanol and water, heated, filtered and then dried |
| 10/22/2002 | US6469120 Water-stabilized organosilane compounds and methods for using the same |
| 10/16/2002 | EP1248869A2 High-throughput formation, identification, and analysis of diverse solid-forms |
| 10/16/2002 | EP1248757A1 Inhibition of polymerization of unsaturated monomers |
| 10/16/2002 | CN1374303A Production process of water soluble ginkgo leaf extractive |
| 10/16/2002 | CN1374302A Extracting process of eliminating ginkgolic acid from ginkgo leaf extractive |
| 10/16/2002 | CN1374301A Process of eliminating tannic acid from ginkgo leaf extractive |
| 10/16/2002 | CN1374300A Resin process of eliminating ginkgolic acid from gingko leaf extractive |
| 10/16/2002 | CN1374280A Technological process of eliminating alkaloid from plant extractive |
| 10/16/2002 | CN1092624C Process for removing heavy metals |
| 10/15/2002 | US6465657 Method of preparing refined organic compound for use in photography with improved liquid-liquid extraction from organic reaction mixture |
| 10/09/2002 | CN1373741A Improved metal-ligand complex catalyzed processes |
| 10/09/2002 | CN1092178C Method for preparation of benzophenone derivs. |
| 10/08/2002 | USRE37872 Enzymes |
| 10/08/2002 | US6461642 Crystallization using supercritical or subcritical fluids |
| 10/02/2002 | CN1091622C Recovering method for sublimate |
| 10/01/2002 | US6458956 One nitroxyl radical (derivative), b) at least one phenol (derivative) and c) at least one chemical compound which contains at least one phosphorus atom which has the oxidation state +3 is preferably used for stabilizing compounds for free |
| 09/26/2002 | WO2002074718A2 Ionic liquids as selective additives for the separation of close-boiling or azeotropic mixtures |
| 09/26/2002 | WO2001019484A9 Purification device and purification method |
| 09/25/2002 | EP1243571A2 Stabilisation of vinyl monomers by compositions based on alkylhydroxylamines |
| 09/25/2002 | EP1242801A1 Inert carriers |
| 09/25/2002 | EP1242181A1 Carrier catalytic converter for the selective hydrogenation of alkines and dienes |
| 09/25/2002 | EP1242178A1 Inert carriers |
| 09/25/2002 | EP1242155A1 Treatment of extraction solvent to remove acid contaminants |
| 09/25/2002 | EP0968167B1 Process for the preparation of dicarboxylic acid crystals |
| 09/19/2002 | US20020130030 Method of decomposing halogenated aliphatic hydrocarbon compounds or aromatic compounds and apparatus to be used for the same as well as method of clarifying exhaust gas and apparatus to be used for the same |
| 09/18/2002 | CN1091085C Process for recovering nitrogen-contained organic alkali |
| 09/11/2002 | EP1237853A1 A process for removing trace solvent from a material |
| 09/11/2002 | EP1237831A1 Screening for optimal yield in the crystallisation of multicomponent systems |
| 09/10/2002 | US6447764 Method for isolating anionic organic substances from aqueous systems using cationic polymer nanoparticles |
| 09/06/2002 | WO2002033025A3 C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 09/05/2002 | US20020123658 Recycling streams containing polymerization inhibitors at reboiler temperature no higher than 110 degrees C |
| 09/04/2002 | CN1090176C Purification of nitrile |
| 09/04/2002 | CN1090175C Improved acrylonitrile recovery process |
| 09/03/2002 | US6444278 2,6-di-tert-butylphenols |
| 09/03/2002 | CA2178085C Glutaramide derivatives |
| 08/28/2002 | EP1233989A2 Inhibition of polymerization of unsaturated monomers |
| 08/28/2002 | EP1233937A2 Inhibition of polymerization of unsaturated monomers |
| 08/28/2002 | EP1094891B1 Preparation of an organic compound by a condensation reaction |
| 08/22/2002 | US20020113018 Amino functionalized silica gel |
| 08/22/2002 | DE10107933A1 Abreicherung wässriger Azeotrope und ätherischer Alkohollösungen durch kristalline Abtrennung des Wassers mit Hilfe von selektiver Adsorption Depletion aqueous azeotropes and etheric crystalline alcohol solutions by removing the water by means of selective adsorption |
| 08/21/2002 | EP1232002A1 Method for the production of particles |
| 08/20/2002 | US6437202 Contacting the fluoroalkene with ammonium hydroxide or a compound containing nitrogen, sulfur or phosphorus to form an adduct to bind to a coating or absorbent support; removal of perfluoroisobutylene from coolants; materials handling |
| 08/13/2002 | US6433242 Process for fractionating dibutene |
| 08/13/2002 | US6433230 Using basic catalyst |
| 08/08/2002 | WO2002060864A1 Process of obtaining compositions of stable lutein and lutein derivatives |
| 08/07/2002 | EP1227867A1 Method and device for eliminating oxygen contained in aqueous monomer solutions |