| 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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| 11/09/2004 | US6814867 While eliminating the step of reducing hexavalent chromium to trivalent chromium |
| 11/03/2004 | EP1472201A2 Method for the separation of acids from chemical reaction mixtures by means of ionic fluids |
| 11/03/2004 | EP1472188A1 Purification of onium hydroxides by electrodialysis |
| 11/03/2004 | CN1543449A Solvents containing cycloalkyl alkyl ethers and process for production of the ethers |
| 11/03/2004 | CN1173914C Improved separation processes |
| 10/27/2004 | EP1470136A1 Method for the separation of acids from chemical reaction mixtures by means of ionic fluids |
| 10/27/2004 | EP1404687A4 Fluorous triphase and other multiphase systems |
| 10/27/2004 | CN1541202A Statilisation of ethylenically-unsaturated compounds with amidoximes |
| 10/21/2004 | US20040210078 synergistic mixtures with phenols or phenothiazines; (meth)acrylic acid, (meth)acrolein, vinyl aromatics, (meth)acrylic esters, (meth)acrylonitrile, (meth)acrylamide, olefins, or C4 to C8 conjugated dienes; nitrilotris(acetamidoxime) or nitrilotris(propionamidoxime); polymerization inhibition |
| 10/20/2004 | EP0907625A4 Fluorous reaction and separation systems |
| 10/20/2004 | CN1538870A Use of membranes to separate organic liquids having different polarities |
| 10/19/2004 | US6806357 Fluorous nucleophilic substitution of alcohols and reagents for use therein |
| 10/13/2004 | EP1465850A1 Water stripping and catalyst/liquid product separation system |
| 10/13/2004 | EP1372807B1 Ionic liquids as selective additives for the separation of close-boiling or azeotropic mixtures |
| 10/13/2004 | CN1170794C Process for fractionation of dibutene |
| 10/07/2004 | US20040197829 Reaction and separation methods |
| 10/07/2004 | DE10346135A1 Stabilizer mixture, useful for the stabilization of polymerizable compounds against polymerization, comprises at least one radical trap containing glycerol units and at least one other (co)stabilizer |
| 10/06/2004 | EP1464643A1 Method of storing tetrazolium compound, stabilizer for use therein, and tetrazolium compound reagent solution stored by the method |
| 10/06/2004 | EP1133284B1 A process for the preparation of crystalline particles |
| 10/06/2004 | EP1084156B1 Method for reducing the c1-c2-aldehyde content formed from compounds with -ch2-chr-o- or -ch2-ch(oh)-groups |
| 10/06/2004 | CN1169455C Method for extracting composite soy bean function from degreased bean dregs at high or low temperature |
| 10/05/2004 | CA2250276C Polymerization inhibitor composition |
| 09/30/2004 | WO2004083154A1 Improved extraction process |
| 09/30/2004 | CA2518722A1 Improved extraction process |
| 09/29/2004 | CN1532182A Preparation of piper laetispicum effective part and its use in medical therapy and health field |
| 09/28/2004 | US6797182 To remove oxygen and water; for semiconductors |
| 09/23/2004 | WO2004081073A2 Methods for selectively removing counterions from compounds and compounds derived from such methods |
| 09/23/2004 | WO2004080974A1 A purification method of ionic liquids to obtain their high purity |
| 09/23/2004 | DE10310267A1 Intramolecular transesterification of material, especially plant extract, containing cyclic polyhydroxy compounds, e.g. to prepare bioactive natural products, carried out at elevated temperature and pressure |
| 09/23/2004 | CA2518561A1 Methods for selectively removing counterions from compounds and compounds derived from such methods |
| 09/22/2004 | EP1028934B1 Method for separating an organic compound from an aqueous medium |
| 09/22/2004 | CN1531521A Method for stabilizing acrylic monomers |
| 09/21/2004 | US6793825 An extraction agent which contains at least partially relatively long-chain organic compounds and at least one liquid cation exchanger, and a membrane that is wettable by either aqueous mixture or by extraction agent; extraction |
| 09/16/2004 | DE20304611U1 Compact unit, for high and low pressure decontamination from nuclear and chemical contamination with solvent, comprises spray nozzles |
| 09/15/2004 | CN1529685A Improved metal-ligand complex catalyzed processes |
| 09/15/2004 | CN1528758A Method for separating major monomeric compoent of soybean isoflavone |
| 09/15/2004 | CN1528723A Technological method for extracting active principle of dragon's blood by supercritical fluid |
| 09/15/2004 | CN1166675C Extractant, extraction process and analysis method of high-activity ginkgo leaf extractive |
| 09/09/2004 | US20040176649 generating ultrafine bubbles in an aqueous solution and spontaneously generating hydrate nuclei by self-compression and collapsing of the ultrafine bubbles |
| 09/09/2004 | DE10237274B4 Verfahren zur Abtrennung von Zinksalzen aus Zink-Alkoholaten oder Zink-Amiden enthaltenden nicht-wässrigen Syntheselösungen Process for the separation of zinc salts of zinc alkoxides or zinc amides containing non-aqueous synthesis solutions |
| 09/08/2004 | EP1453813A2 IMPROVED PURIFICATION OF 4, 4'(5')-DI- i t /i -BUTYLCYCLOHEXANO-18-CROWN-6 |
| 09/07/2004 | US6787021 Using electrolytic cells; supplying electric current; ion exchanging |
| 09/01/2004 | EP0983217B1 Method for removing heavy metals from organic compounds |
| 08/25/2004 | EP1448283A1 Method for performing the purifying separation of crystals out of their suspension in a mother liquor |
| 08/25/2004 | CN1524006A Ionic liquids as selective additives for separation of close-boiling or azeotropic mixtures |
| 08/18/2004 | EP1446373A1 Method for preparing a composition containing at least an internal dehydrating product of a hydrogenated sugar |
| 08/18/2004 | EP1025067B1 Process for the crystallisation of sterically hindered compounds |
| 08/18/2004 | EP0981507B1 Process for the removal of heavy metals |
| 08/18/2004 | CN1162423C Trioxane storage method and trioxane compositions |
| 08/17/2004 | US6777580 Treating 1-(3,5- bis(trifluoromethyl)phenyl)ethan-1-one with bis((pentamethylcyclopentadienyl)rhodium chloride) and (s,r)-cis-1-amino-2-hydroxy-indane in the presence of isopropanol |
| 08/12/2004 | US20040158083 Method of extracting and isolating minor components from vegetable oil |
| 08/12/2004 | US20040157285 Method of storing tetrazolium compound, stabilizer for use therein, and tetrazolium compound reagent solution stored by the method |
| 08/11/2004 | EP1445259A1 Process and crystal forms of 2-methyl-thieno-benzodiazepine |
| 08/11/2004 | EP1444188A1 Process for the preparation of optically pure or enriched racemic tetralone |
| 08/05/2004 | WO2004065334A1 Method of removing organotin residue |
| 08/05/2004 | US20040150123 Method for carrying out the distillation or reactive distillation of a mixture containing at least one toxic constituent |
| 08/04/2004 | EP1442001A2 Method for eliminating polarizable impurities from hydrocarbons and hydrocarbon mixtures |
| 08/04/2004 | EP1441845A1 Method for the production of particles |
| 08/04/2004 | CN1517326A Capejasmine cycloolefines ether terpene extract and its preparation method and use |
| 07/29/2004 | WO2004062771A1 Method of removing tacky substance or waste liquid containing tacky substance |
| 07/29/2004 | US20040147797 Method of inhibiting polymerization of aromatic vinyl |
| 07/29/2004 | US20040147763 Liquid phase separation and crystallization of monomers for polymers such as acrylic acid, methacrylic acid or vinyl pyrrolidone |
| 07/29/2004 | DE69912203T2 Verfahren zur inhibierung der polymerisierung von vinylverbindungen A method for inhibiting the polymerization of vinyl compounds |
| 07/28/2004 | CN1515582A Preparation method of low-acid ginkgo leaf extract |
| 07/28/2004 | CN1515581A Preparation method of ginkgo leaf extract |
| 07/28/2004 | CN1515524A Method for extracting isoflavone, flavones and lactone from armenica sibirica leaf by adoptnig solvent method |
| 07/28/2004 | CN1515523A Method for extracting isoflavone, flavones and lactone from armeniaca sibirica leaf by adopting resin method |
| 07/28/2004 | CN1515522A Melting purification equipment in organic compound field and its purification method |
| 07/28/2004 | CN1515521A Method for preparing extract of peanut leaf |
| 07/22/2004 | WO2003037840A8 Process for the preparation of optically pure or enriched racemic tetralone |
| 07/22/2004 | CA2511881A1 Pharmaceutical compositions comprising a sodium salt of celecoxib with improved dissolution |
| 07/21/2004 | EP1438277A2 Recycle of nitroxyl-containing streams at low temperature |
| 07/21/2004 | CN1513848A Method of extracting phenolic components from chinese medicine red sage root and its freeze dried powder injection agent |
| 07/14/2004 | CN1511583A Chinese rose extract and its preparing method and use |
| 07/13/2004 | US6761833 Stabilization of monomers by compositions based on alkylhydroxylamines |
| 07/08/2004 | US20040133058 Ionic liquids as selective additives for separation of close-boiling or azeotropic mixtures |
| 07/07/2004 | CN1510013A Inhibitor |
| 07/06/2004 | CA2088386C Nitrosamine and nitrite inhibition |
| 07/01/2004 | WO2004024656A3 Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane |
| 07/01/2004 | US20040127764 Method for decomposing a pollutant |
| 07/01/2004 | US20040127755 conducting a chemical reaction in a non-fluorous medium using a fluorous compound in the presence of a solid adsorbant containing a fluorous domain and at least one chemical reactant; e.g., hydroformylation, hydrosilation |
| 07/01/2004 | US20040124144 In solution, suspension of a nonpolar solvent; contacting with silica; purification; decoloring |
| 06/30/2004 | EP1324811B1 Method for carrying out the distillative separation of c 5+ cuts |
| 06/30/2004 | EP1242155B1 Treatment of extraction solvent to remove acid contaminants |
| 06/30/2004 | CN1509207A Distillation or reaction distillation comprising at least one toxic constituent |
| 06/24/2004 | WO2001068247A8 Separation of reaction products containing organophosphorus complexes |
| 06/24/2004 | US20040120957 Use of A33 antigens JAM-it |
| 06/23/2004 | CN1506365A Prepn process of tripterygium extractive |
| 06/23/2004 | CN1506360A Method of extracting effective components in kudzu vine root |
| 06/22/2004 | CA2084137C Optically active bead polymers containing fillers |
| 06/17/2004 | WO2004050209A1 Tool and method for separating water in organic solvent containing water dispersed therein |
| 06/17/2004 | CA2508575A1 Tool and method for separating water in organic solvent containing water dispersed therein |
| 06/16/2004 | EP1212270B1 Use of cyclodextrin for protective storage of chemical compound libraries |
| 06/16/2004 | CN1505599A Method of inhibiting polymerization of aromatic vinyl |
| 06/15/2004 | US6749756 Tagging series of pure compounds with alkylfluorosilanes of varied fluorine content; preforming combined synthesis and chromatographing |
| 06/09/2004 | EP1165467B1 Impurities separation by distillation |
| 06/09/2004 | CN1502365A Sesame flower extract, preparation method and use thereof |
| 06/09/2004 | CN1502353A Compound chuanxiong and angelica total extract and preparation, use thereof |
| 06/03/2004 | WO2004046075A1 Solvent for crystallization containing cycloalkyl ether compound and method of crystallization with the solvent |
| 06/03/2004 | US20040106753 C-nitrosoaniline compounds and their blends as polymerization inhibitors |