| 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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| 07/14/1998 | CA2127755C Method for crystallizing methionine |
| 07/09/1998 | WO1998029369A1 Method for recovering gas from hydrates |
| 07/09/1998 | DE19651215C1 Verfahren zur Trennung von kristallisierbaren Isomerenmischungen organischer Verbindungen A process for separating isomer mixtures of crystallizable organic compounds |
| 07/09/1998 | CA2273054A1 Method for recovering gas from hydrates |
| 07/07/1998 | US5777141 Chromatography |
| 07/07/1998 | US5777121 Solubilizing liquid phase |
| 07/01/1998 | EP0850902A1 Process for reducing the level of trisubstituted phosphine, arsine and/or stibine oxide in a mixture |
| 07/01/1998 | CN1186216A Process and plant for separation of mixture of hydrogen and/or at least one hydrocarbon and/or nitrogen and/or carbon monoxide |
| 06/30/1998 | US5773653 Recovery of carboxylic acid from organic solution that contains an amine and and an extraction enhancer |
| 06/30/1998 | US5772921 Synergistic mixture consisting of a 2,4-dimethyl-6-S-alkylphenol and a sterically hindered phenol |
| 06/24/1998 | CN1038836C Separation purification of C60 and C70 mixture |
| 06/23/1998 | CA2222854A1 Triphenylphosphine oxide complex process |
| 06/18/1998 | WO1998025889A1 Suspension crystallization method |
| 06/18/1998 | WO1998025872A1 Substance mixtures containing stabilizers and compounds containing vinyl groups |
| 06/18/1998 | WO1998025680A1 Suspension crystallization method |
| 06/18/1998 | DE19651307A1 Stoffmischungen, enthaltend vinylgruppenhaltige Verbindungen und Stabilisatoren Compositions containing vinyl-containing compounds and stabilizers |
| 06/09/1998 | US5763684 Method of purifying fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether |
| 06/03/1998 | EP0845473A2 Process for removing residual acidic chlorine from carbonyloxysilan |
| 06/03/1998 | EP0845448A1 Inhibiting polymerization of vinyl aromatic monomers |
| 06/02/1998 | US5760265 Process for preparation of an ester utilizing an esterifying catalyst |
| 06/02/1998 | US5760016 Use of mono-3,6-anhydrocyclodextrins for solubilizing a hydrophobic compound and for controlling the purity of an enantiomer and process for the preparation of these cyclodextrins |
| 06/02/1998 | CA2223043A1 Inhibiting polymerization of vinyl aromatic monomers |
| 05/26/1998 | US5756005 Stabilization of non-halogenated 3-isothiazolones in aggressive systems |
| 05/26/1998 | US5755975 Separation of substances from a liquid mixture by crystallization |
| 05/20/1998 | CN1038417C Process for shortopping free radical polymerization and stabilized resin compositions |
| 05/19/1998 | US5753106 Method of, and apparatus for, and irradiation unit for oxidative photopurification |
| 05/12/1998 | US5750775 Alkaline ph for crystallization of complex |
| 05/12/1998 | US5750765 7-substituted quinone methides as inhibitors for unsaturated monomers |
| 05/12/1998 | US5750679 Process for obtaining pharmacologically active compounds from complex mixtures of substances |
| 05/06/1998 | EP0839817A2 Method for purifying mono-alkyl-arsines or mono-alkyl-phosphines |
| 05/05/1998 | US5747484 Bactericides |
| 04/28/1998 | US5744672 Using a mixture of 3,5-di-tert-butyl-4-hydroxy-n,n-dimethylbenzylamine and an acid component in the presence of air |
| 04/22/1998 | EP0837031A2 Process and apparatus for the separation of a mixture of hydrogen and/or at least one hydrocarbon and/or nitrogen and/or carbon oxide |
| 04/22/1998 | EP0562121B1 Separating agent comprising bonded conalbumin |
| 04/15/1998 | EP0835860A1 Separation of water from reactive mixtures |
| 04/15/1998 | EP0835858A1 Process for the purification of fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether |
| 04/15/1998 | EP0835233A1 Composition and method for stabilizing radiolabeled organic compounds |
| 04/15/1998 | CN1179160A Process and crystal form of 2-methyl -thieno -benzodiazepine |
| 04/15/1998 | CN1179150A 4 -acylamino piperidin-N-oxides |
| 04/14/1998 | US5738836 Composition for stabilizing radiolabeled organic compounds |
| 04/08/1998 | CN1037967C Novel intermediate and its use of preparation of acid |
| 04/07/1998 | US5736541 Slurrying impure material in anhydrous ethyl acetate, then crystallization yields pure stable drug for treatment of anxiety, psychological disorders and gastrointestinal disorders |
| 04/07/1998 | US5736366 Adsorption of 10-deacetylbaccatin iii from aqueous suspension of ground yew plant (taxus sp.), desorption from substrate by solvent, desolventizing and selective crystallization |
| 04/02/1998 | WO1998013346A1 Stabilised monomer composition |
| 04/01/1998 | CN1177953A Process for the purification of fluoromethyl-1, 1, 1, 3, 3, 3 -hexafluoroisopropyl ether |
| 03/31/1998 | US5734071 Process for separating lipophilic compounds |
| 03/26/1998 | DE19638868A1 Stabilisierte Monomerenzusammensetzung Stabilized monomer |
| 03/24/1998 | US5731459 Process for separating amino acids and aminosulponic acids through adsorption on zeolites |
| 03/17/1998 | US5728272 Separation by rectification of unsaturated carboxylic acids from solvents |
| 03/10/1998 | US5725749 From a mixture with lactose |
| 03/04/1998 | CN1174828A Process for separating oxidation reaction product and oxidation catalyst |
| 03/03/1998 | US5723643 Hydrosilylation reaction of acrylate and silane with inhibitor of polymerization |
| 02/25/1998 | EP0825165A2 A process for separating an oxidation reaction product and an oxidation catalyst |
| 02/25/1998 | CN1174197A Method for separating phosphine oxide and alkylaryl phosphine from homogeneous hydrogen formylation reaction mixture |
| 02/18/1998 | EP0824095A1 Process for the separation of phosphine oxides and alkylarylphosphines from reaction mixtures obtained by homogeneous hydroformylation |
| 02/18/1998 | CN1173489A Purification of nitrile |
| 02/13/1998 | CA2212535A1 Process for separating off phosphine oxides and alkylarylphosphines from reaction mixtures of a homogeneous hydroformylation |
| 02/12/1998 | WO1998005416A1 Mixing device for liquids |
| 02/12/1998 | DE19631628A1 Mischvorrichtung für Flüssigkeiten Mixing device for liquids |
| 02/12/1998 | CA2261631A1 Mixing device for liquids |
| 02/04/1998 | EP0822170A1 Selective removal of perfluoroisobutylene from streams of halogenated hydrocarbons |
| 01/29/1998 | WO1998003452A1 Polymers as a support for combinatorial synthesis |
| 01/29/1998 | CA2261051A1 Polymers as a support for combinatorial synthesis |
| 01/28/1998 | CN1171397A Crystal of N-£(quinolin-2-yl) phenyl| sulfonamides and process for producing same |
| 01/22/1998 | WO1998002500A1 Composition preventing the polymerisation of ethylene unsaturated monomers, method of preparation and use thereof |
| 01/22/1998 | WO1998002403A1 Method for inhibiting vinyl aromatic monomer polymerization in condenser and compression systems |
| 01/22/1998 | WO1998002400A1 Polymerisation inhibitor |
| 01/22/1998 | DE19629061A1 Composite membrane for pervaporation |
| 01/22/1998 | CA2261064A1 Polymerisation inhibitor |
| 01/20/1998 | US5710284 Purification of N-vinylpyrrolidone by crystallization |
| 01/14/1998 | CN1170004A Compression of ethylenically unsaturated monomers |
| 01/08/1998 | WO1998000376A1 Fluorous reaction and separation systems |
| 01/07/1998 | EP0815082A1 4-acylamino piperidin-n-oxyls |
| 01/06/1998 | US5705719 Selective removal of perfluoroisobutylene from streams of halogenated hydrocarbons |
| 01/06/1998 | US5705718 Process for the purification of 1,1,1,2-tetrafluoroethane |
| 12/30/1997 | US5702535 Dry cleaning and degreasing system |
| 12/29/1997 | EP0814076A1 Purification of nitrile |
| 12/17/1997 | EP0812841A1 Crystal of N-((quinolin-2-yl)-phenyl)sulfonamides and process for producing the same |
| 12/17/1997 | EP0812345A1 Method for selective hydrogenation of a distillation cut of hydrocarbons |
| 12/17/1997 | CN1168146A Stabiliser mixture made from chromane derivs. and inert organic solvents, and microcapsules contg. said stabiliser mixture |
| 12/17/1997 | CN1167757A Improved acrylonitrile recovery process |
| 12/13/1997 | CA2207464A1 Crystal of n-{(quinolin-2-yl)phenylsulfonamides and process for producing the same |
| 12/11/1997 | WO1997046528A1 Sterically hindered 4-amino-piperidine with a low dimer content, its production and use |
| 12/11/1997 | WO1997046504A1 Mixtures containing monomers and stabilizers |
| 12/11/1997 | DE19622498A1 Stabilised vinyl monomer mixture |
| 12/10/1997 | EP0811617A1 Extractive distillation of propylene oxide using propanol |
| 12/10/1997 | EP0811609A2 Improved acrylonitrile recovery process |
| 12/10/1997 | EP0811590A1 Process for compressing ethylenically unsaturated monomers |
| 12/09/1997 | US5695615 Distillation from a hydrophilic solvent; dehydration |
| 12/09/1997 | CA2027418C Polyol polyester synthesis |
| 12/03/1997 | CN1166820A Method for inhibiting premature polymerization of vinyl aromatic monomers |
| 12/03/1997 | CN1036592C Novel method for preparation and/or purification of clavulanic acid or pharmaceutical salt or ester of same |
| 12/03/1997 | CA2190710A1 Extractive distillation of propylene oxide using propanol |
| 12/02/1997 | US5693814 Crystals of antimicrobial compound |
| 11/25/1997 | US5690793 Distillation using a hydrophilic solvent |
| 11/25/1997 | CA2141383C Precooling for ethylene recovery in dual demethanizer fractionation systems |
| 11/18/1997 | US5688956 Method for preparing N-methyl 2-(3-pyridyl) (1R,2R)-2-tetrahydrothiopyrancarbothioamide-1-oxide |
| 11/13/1997 | WO1997042230A1 Rapid purification by polymer supported quench |
| 11/13/1997 | DE19616046A1 Verfahren zur Abtrennung von organischen Monomeren oder Hilfsstoffen Process for the separation of organic monomers or auxiliaries |
| 11/13/1997 | CA2251700A1 Rapid purification by polymer supported quench |