| 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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| 09/15/1994 | CA2153577A1 Method for preparing n-methyl 2-(3-pyridyl)(1r,2r)-2-tetrahydrothiopyrancarbothioamide-1-oxide |
| 09/13/1994 | US5346595 Process for the purification of a pentafluoroethane azeotrope |
| 09/12/1994 | CA2118666A1 Polymethylpiperidine compounds containing silane groups and suitable for use as stabilizers for organic materials |
| 09/06/1994 | US5345030 Inhibiting popcorn polymer formation with sulfur-containing compounds |
| 09/06/1994 | US5344976 Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 09/06/1994 | US5344971 Process for deodorizing a mercapto acid by extracting malodorous compound therefrom with a supercritical fluid |
| 09/01/1994 | WO1994019301A1 Purification of a component of a binary azeotrope |
| 08/31/1994 | EP0612718A2 Process for reducing the free aldehyde content in N-alkylol amide momomers |
| 08/30/1994 | US5342934 Enantioselective receptor for amino acid derivatives, and other compounds |
| 08/24/1994 | EP0611763A1 Processing for purifying crown compounds |
| 08/17/1994 | EP0610820A1 Catalytic microporous membrane |
| 08/17/1994 | EP0610419A1 Process and capillary columns for separating enantiomers. |
| 08/16/1994 | US5338420 Electrodialysis through an ion exchange membrane |
| 08/11/1994 | DE4313121C1 Process for separation and purification of substances by melt crystallisation |
| 08/09/1994 | US5336412 Using pneumatic pressure differential |
| 08/03/1994 | EP0608873A1 Nitrosamine inhibition |
| 08/02/1994 | US5334776 Aromatic diacetylenes for clathrating |
| 08/02/1994 | US5334744 Separation of isomer pair 1 and isomer pair 2 by treating in a organic solvent in presence of alkali metal cyanide |
| 08/02/1994 | US5334311 Resolution of optical isomers |
| 08/02/1994 | CA1331136C Stable mixture containing oxidation-sensitive compounds, preparation thereof and use of a combination of substances for stabilizing oxidation-sensitive compounds |
| 07/30/1994 | CA2114445A1 Nitrosamine inhibition |
| 07/27/1994 | EP0607998A2 Chromatographic adsorbent particles, methods of their preparation, and their use as a solid phase matrix in a fluid bed reactor |
| 07/27/1994 | EP0607821A1 Process for preparation of purified phthalimidoalkanecarboxylic acids |
| 06/29/1994 | EP0603400A1 Method of removing halogenated aromatic compound from hydrocarbon oil |
| 06/28/1994 | US5324492 Surface discharger; formation of free radicals; decomposition into nitrogen gas |
| 06/15/1994 | EP0601273A1 Purification of propylene oxide |
| 06/11/1994 | CA2100711A1 Purification of propylene oxide |
| 06/09/1994 | WO1994012275A1 Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compounds |
| 06/08/1994 | EP0600460A1 Process for the preparation of 6(S)-5,6,7,8-tetrahydrofolic acid |
| 06/07/1994 | US5318790 Removal of by-products and starting materials in the ester interchange of a carbohydrate e.g., sucrose, and a soap by adding a silica gel; oxidation resistance; nonhydrolyzing; cooking shortening |
| 05/11/1994 | EP0596381A1 Process for the separation of trioxane from aqueous mixture |
| 05/11/1994 | EP0596262A1 Process for the preparation of sterile beta-lactam antibiotics |
| 05/11/1994 | EP0596059A1 A method of controlling the oxidation of chemicals during storage using noble gases |
| 05/04/1994 | EP0594837A1 Radiolabelled compound formulations. |
| 04/27/1994 | EP0594341A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 04/27/1994 | EP0593639A1 Pyrrolidine and thiazolidine derivatives, preparation thereof and drugs containing same. |
| 04/26/1994 | US5306561 Polymerizing an unsaturated monomer in an aqueous dispersion of soluble polymer particles swollen with an emusified unsaturated monomer; chromatography separation; water purification |
| 04/22/1994 | CA2099168A1 Compositions and methods for inhibiting styrene polymerization |
| 04/20/1994 | EP0593314A1 Procedure to deodorise a mercapto acid and product thus obtained |
| 04/20/1994 | CN1085552A Process for obtaining 10-deacetylbaccatin III |
| 04/14/1994 | WO1994007881A1 Method of obtaining 10-deacetylbaccatine iii |
| 04/12/1994 | US5302681 Mixing with polymerizable monomer to retard premature free-radical polymerization |
| 04/12/1994 | CA1328463C 9-anthrylalkyl compounds, their preparation and their use |
| 04/07/1994 | DE4330591A1 Stabilisation of unsatd. higher aliphatic cpds. - esp. insect pheromones, with combination of benzotriazole deriv. and phenolic antioxidant |
| 03/30/1994 | CN1084508A Nitrosamine & nitrite inhibition |
| 03/23/1994 | CN1084155A Inhibiting polymerization of vinyl aromatic monomers |
| 03/23/1994 | CN1084136A Process for the preparation and purificatin of a hydroxylammonium salt solution |
| 03/09/1994 | EP0586009A1 Process for separating catalysts from organic solutions, by means of semipermeable membranes |
| 03/08/1994 | US5292785 Bis-phosphite stabilized compositions |
| 03/02/1994 | EP0584720A1 Process for the recovery of rhodium from distillation residues from products of the oxosynthesis |
| 03/02/1994 | CN1083042A Process for producing highly pure phenol |
| 03/01/1994 | US5290568 Moistening alpha form crystals with water in the presence of beta seed crystals, agitation |
| 03/01/1994 | CA2104509A1 Process for the recovery of rhodium from distillation residues of products of the oxo synthesis |
| 02/17/1994 | WO1994003423A1 Method of bleaching surfactants |
| 02/17/1994 | WO1994003419A1 Improved process for separating and recovering halocarbons from mixtures thereof |
| 02/15/1994 | CA1327049C Process for obtaining substituted fluorobenzenes |
| 02/09/1994 | EP0582063A1 Process of purification of pyridin compounds from a hydrocarboxymethylation mixture |
| 02/03/1994 | DE4225223A1 Verfahren zur Bleiche oberflächenaktiver Verbindungen Process for bleaching surface-active compounds |
| 02/02/1994 | EP0581737A2 Inhibiting polymerization of vinyl aromatic monomers |
| 02/01/1994 | US5282968 Process for separating and recovering halocarbons from mixtures thereof |
| 01/25/1994 | US5281705 Precipitating from a starting material which is a solution of the starting material in an inorganic or organic acid, and precipitating with a base, or a solution of starting material in a chlorinated hydrocarbon, precipitating with hydrocarbon |
| 01/19/1994 | EP0579330A1 Process for the distillation of Fischer-Tropsch products |
| 01/19/1994 | EP0578863A1 Method of reducing nitrogen oxide content in gas |
| 01/19/1994 | EP0578723A1 PROCESS FOR PURIFICATION OF HMG-CoA REDUCTASE INHIBITORS |
| 01/15/1994 | CA2100012A1 Process for the distillation of fischer-tropsch products |
| 01/06/1994 | WO1994000455A1 Enantioselective receptor for amino acid derivatives, and other compounds |
| 01/05/1994 | EP0577213A1 Process for the preparation and purification of a hydroxylammonium salt solution |
| 01/05/1994 | DE4320629A1 Appts. for recovery of solvents from output air - involves membrane pervaporation as dividing layer, with air absorbed in viscous organic fluid |
| 01/05/1994 | CN1080275A Non-chromatography purification of c60 and c70 mixture |
| 01/04/1994 | US5276248 Adding surfactants to form gel in water and storage |
| 01/04/1994 | US5275702 Distillation method of separating organic solvents |
| 12/29/1993 | EP0576191A2 Separation of unsaturates |
| 12/28/1993 | US5273572 Process for removing an organic compound from water |
| 12/23/1993 | WO1993025635A1 Method of removing halogenated aromatic compound from hydrocarbon oil |
| 12/23/1993 | WO1993025557A1 Process for the preparation of clavulanic acid |
| 12/23/1993 | CA2117538A1 Process for the preparation of clavulanic acid |
| 12/23/1993 | CA2114840A1 Method of removing halogenated aromatic compound from hydrocarbon oil |
| 12/22/1993 | CN1023229C Stable mixture containing oxidation-sensitive compounds, its prepn. and application |
| 12/21/1993 | US5271903 Supercritical fluid extraction restrictor and collection system |
| 12/17/1993 | CA2098526A1 Separation of unsaturates |
| 12/15/1993 | CN1079497A Method for removal of halogenated aromatic compound from hydrocarbon oil |
| 12/15/1993 | CN1023123C Method of reinforced stabilization of polybutadiene elastomer or C5 or C9-hydrocarbon resin |
| 12/12/1993 | CA2160768A1 Process for the preparation of clavulanic acid |
| 12/09/1993 | WO1993024206A1 Process for removing an organic compound from water |
| 12/09/1993 | CA2135898A1 Process for removing an organic compound from water |
| 12/08/1993 | EP0411016B1 Process for inhibiting the polymerization of acid monomers |
| 12/07/1993 | US5268098 Separation agent comprising aliphatic or aromatic ester of polysaccharide |
| 12/07/1993 | CA1325016C Process for the recovery of rhodium from aqueous solutions containing rhodium complexes |
| 11/30/1993 | USRE34457 Separating agent |
| 11/24/1993 | CN1022831C Preparation of lactone compound |
| 11/23/1993 | US5264646 Process for preparing vinylically-unsaturated compounds |
| 11/23/1993 | US5264640 Depolymerization method for resource recovery from polymeric wastes |
| 11/23/1993 | US5264636 Process for producing highly pure phenol |
| 11/18/1993 | EP0570306A1 Apparatus for extracting, concentrating and separating biochemical products from vegetable or animal biological substances |
| 11/18/1993 | EP0569539A1 Inhibiting popcorn polymer formation with sulfur-containing compounds |
| 11/18/1993 | EP0569502A1 Inhibiting popcorn polymer formation with alkyl halides. |
| 11/18/1993 | EP0569501A1 Inhibiting popcorn polymer formation with esters of inorganic acids. |
| 11/18/1993 | EP0569359A1 Inhibiting popcorn polymer formation with compounds incorporating group iv elements. |
| 11/18/1993 | EP0551352A4 Supercritical fluid extraction restrictor and collection system |
| 11/16/1993 | US5262017 Plural stage purification of propylene oxide |