| 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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| 11/12/1997 | EP0806426A1 Process for the preparation of clavulanic acid |
| 11/11/1997 | US5686058 Radiolabelled nucleotide formulations stored in an unfrozen state |
| 11/05/1997 | EP0804501A1 Stabiliser mixture made from chromane derivatives and inert organic solvents, and microcapsules containing the said stabiliser mixture |
| 11/04/1997 | US5683555 Working up reaction mixtures obtained in addition reactions with acetylene or propyne |
| 10/30/1997 | WO1997040081A1 Process for separating organic monomers or auxiliaries |
| 10/30/1997 | CA2252885A1 Process for separating organic monomers or auxiliaries |
| 10/29/1997 | CN1163283A Synergistic mixture consisting of 2,4-dimethyl-6-S-alkylphenol and sterically hindered phenol |
| 10/23/1997 | DE19622268C1 Suppressing dimerisation of hindered 4-amino-piperidine compounds |
| 10/22/1997 | EP0652859B1 Improved process for separating and recovering halocarbons from mixtures thereof |
| 10/22/1997 | CN1162955A 2-cyanoacrylic acid esters |
| 10/15/1997 | EP0801069A1 Process for the preparation of clavulanic acid |
| 10/15/1997 | EP0688309B1 Continuous process for purifying perfluorochemical compositions |
| 10/14/1997 | CA2141385C Open loop mixed refrigerant cycle for ethylene recovery |
| 10/14/1997 | CA2141384C Mixed refrigerant cycle for ethylene recovery |
| 10/09/1997 | CA2579516A1 Process for the preparation of a granular microbial biomass and isolation of valuable compounds therefrom |
| 10/02/1997 | WO1997035821A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 10/02/1997 | CA2241209A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 10/01/1997 | EP0797472A1 Process and plant for separating heavy and light compounds by extraction with a supercritical fluid and by nanofiltration |
| 09/30/1997 | US5672726 Method for separating and purifying α-linolenic acid from perilla oil |
| 09/25/1997 | WO1997034713A1 Method of dechlorinating organic chlorine compound |
| 09/23/1997 | USRE35615 Ion exchanging |
| 09/23/1997 | US5670692 7-substituted quinone methides as inhibitors for unsaturated monomers |
| 09/18/1997 | WO1997033952A1 Polymerization inhibitor composition |
| 09/17/1997 | EP0794933A1 A method for inhibiting premature polymerization of vinyl aromatic monomers |
| 09/16/1997 | US5667763 Radiolabelled amino acid formulations stored in an unfrozen state |
| 09/12/1997 | WO1997032833A1 Stabilized monomer composition |
| 09/11/1997 | DE19609312A1 Stabilisierte Monomerenzusammensetzung Stabilized monomer |
| 09/10/1997 | EP0794169A1 Stabilized menthyl lactate |
| 09/10/1997 | CN1158848A Stabilization of non-halogenated 3-isothiazolones in aggressive systems |
| 08/27/1997 | EP0791573A1 Nitroxides as antipolymerants for vinyl acetate units |
| 08/27/1997 | EP0790980A1 2-cyanoacrylic acid esters |
| 08/27/1997 | EP0790966A1 Purification of stable organic compounds |
| 08/20/1997 | CN1157606A Method of inhibiting vinyl compound polymerization |
| 08/19/1997 | US5659095 Composition for inhibiting the polymerization of aromatic vinyl monomers |
| 08/07/1997 | DE19603788A1 Preparation of concentrated plant extract, particularly from Harpagophytum procumbens |
| 08/06/1997 | EP0787745A2 Preparation of inulin products |
| 08/06/1997 | EP0787744A1 Substituted derivatives of per(3,6-anhydro)cyclodextrins, process for their preparation and their uses for separation of ions |
| 08/06/1997 | CN1155995A Sweetener salt |
| 07/31/1997 | WO1997027165A1 Process for the purification of fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether |
| 07/31/1997 | WO1997026970A1 Method and vaporizer for vaporizing oxidation-sensitive compounds |
| 07/31/1997 | DE19602640A1 Verfahren und Verdampfer zur Verdampfung oxidationsempfindlicher Verbindungen Procedures and evaporator for evaporating oxidation-sensitive compounds |
| 07/29/1997 | CA1339145C Method for inhibiting the polymerization of acid monomers |
| 07/23/1997 | CN1154868A Chromatography process |
| 07/23/1997 | CN1154867A Crystalizing method |
| 07/15/1997 | US5648574 Hydroxylamine, phenylenediamine |
| 07/15/1997 | US5648499 Method of decomposing halogenated aromatic compounds |
| 07/10/1997 | WO1997024413A1 Method for selective hydrogenation of a distillation cut of hydrocarbons |
| 07/10/1997 | WO1997024303A1 Method for purifying crystalline substance |
| 07/10/1997 | WO1997024302A1 Method for purifying crystalline substance |
| 07/10/1997 | CA2241571A1 Method for purifying crystalline substance |
| 07/02/1997 | EP0781829A1 Process and apparatus for the selective hydrogenation by catalytic distillation |
| 07/02/1997 | EP0781755A1 Method of inhibiting vinyl compound polymerization |
| 06/25/1997 | EP0780393A1 Novel crystal of cephalosporin compound |
| 06/25/1997 | CN1035251C Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 06/18/1997 | CN1151986A N-methyl-n-£(1s)-1-phenyl-2-((3s)-3-hydroxypyrrolidin-1-yl) ethyl-2,2-diphenylacetamide |
| 06/17/1997 | US5639922 Process for treatment of hydroperoxide mixture |
| 06/11/1997 | CN1151393A Separation by rectification of unsaturated carboxylic acids from solvents |
| 06/11/1997 | CN1151329A Separation of substances from liquid mixture by crystallization |
| 06/10/1997 | US5637717 Mixing one mole of 2-amino-5-nitropyridine with between 0.3 and 2 moles of hydrogen halide in suitable solvent, allowing to crystallize, recovering |
| 06/10/1997 | US5637700 Purification of caprolactam |
| 06/04/1997 | EP0776883A1 Adduct salts of substituted benzylamine and a process for optically resolving them |
| 06/04/1997 | EP0776875A1 Crystallization method |
| 06/03/1997 | CA2143974C Terazosin monohydrochloride and processes and intermediate for its production |
| 05/30/1997 | CA2191685A1 Adduct salts of novel substituted benzylamine and a process for optically resolving them |
| 05/21/1997 | CN1150148A Purification of N-vinylpyrrolidone by crystallization |
| 05/20/1997 | US5630923 Separation system for preparing high α-glycosyl-L-ascorbic acid |
| 05/20/1997 | US5630434 Filter regeneration system |
| 05/14/1997 | EP0773282A1 Stabilization of non-halogenated 3-isothiazolones in aggressive systems |
| 05/13/1997 | US5629444 Acrylonitrile recovery process |
| 05/13/1997 | US5629331 2-butyl-3-tetrazolylbiphenylylmethyl-1,3-diazaspirononenone made by reacting corresponding nitrile with alkaline azide and triethylamine hydrochloride in inert polar aprotic solvent, neutralizing salt, crystallizing in one of two ways |
| 05/07/1997 | EP0565727B1 Novel compound and separating agent |
| 05/07/1997 | CN1149045A Process for purification of C2 to C4 carboxylic acid and/or anhydride having halide imputies |
| 05/06/1997 | US5627269 Process for the extraction of soluble polysaccharides |
| 05/06/1997 | US5626756 Process for fractionating and refining natural lipid substances |
| 05/02/1997 | EP0770619A2 Process for purifying halosilanes |
| 05/02/1997 | CA2189189A1 Stabilization of non-halogenated 3-isothiazolones in aggressive systems |
| 04/24/1997 | DE19539141A1 New 4-(cyclic-group)-2,6-di-tert.-butyl-phenol derivatives |
| 04/24/1997 | DE19538872A1 Process for treating organic compound |
| 04/23/1997 | EP0768999A1 Recovery of carboxylic acid from organic solution that contains an amine and an extraction enhancer |
| 04/23/1997 | EP0522041B1 Process for the production of an ether |
| 04/17/1997 | WO1997013569A1 Thermally-managed separation and dewatering processes for recovering acid products |
| 04/17/1997 | CA2234070A1 Thermally-managed separation and dewatering processes for recovering acid products |
| 04/16/1997 | EP0768041A1 Sweetener salts |
| 04/15/1997 | US5620568 Extractive distillation of propylene oxide using propanol |
| 04/10/1997 | WO1997012851A1 Method for inhibiting polymerization of vinyl compounds |
| 04/09/1997 | EP0767169A1 Process for the purification of N-vinylpyrrolidone by crystallisation |
| 04/09/1997 | EP0767162A1 Sodium orthohydroxylate-phenol-water complexes, process for preparing same and application for isolation of sodium orthohydroxymandelate |
| 04/09/1997 | EP0766985A1 Process and device for the separation of liquid eutectic mixtures by crystallisation on cooling surfaces |
| 04/09/1997 | EP0766984A1 Process for separating substances of a liquid mixture by crystallisation |
| 04/02/1997 | EP0765864A1 Process for the separation of amino acids and aminosulfonic acids by adsorption to zeolites |
| 04/02/1997 | EP0765855A1 Liquid solutions of dicarboxylic acids |
| 04/02/1997 | EP0765854A1 Process for the rectificative separation of unsaturated carboxylic acids from solvents |
| 04/01/1997 | US5616774 Polymerization inhibition during the distillation and purification process of aromatic vinyl or acrylic compounds |
| 04/01/1997 | US5616755 Process for preparing low-chloride or chloride-free aminofunctional organosilanes |
| 03/29/1997 | CA2183673A1 Separation by rectification of unsaturated carboxylic acids from solvents |
| 03/27/1997 | DE19535426A1 Recovering organic materials from a mixture |
| 03/27/1997 | CA2186187A1 Process for separating amino acids and/or aminosulphonic acids by adsorbing the amino acids on zeolites |
| 03/26/1997 | EP0764656A1 Method of separation of alkyl glycosides |
| 03/26/1997 | CN1145904A Production of beta-form thiamine hydrochloride crystals |
| 03/26/1997 | CN1145903A D4T polymorphic form I process |