| 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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| 03/23/1999 | US5886220 Incorporating water and metallic salt of dithiocarbamic acid as a polymerization inhibitor in production of acrylic or mathacrylic or other vinyl compounds |
| 03/18/1999 | WO1999012935A1 Pyrrolopyrrolidine derivatives and their use as serine protease inhibitors |
| 03/17/1999 | EP0902017A1 Transesterification process |
| 03/17/1999 | EP0736045B1 Use of mono-3,6-anhydro-cyclodextrins for solubilising a hydrophobic compound and monitoring the purity of an enantiomer, and method for preparing said cyclodextrins |
| 03/10/1999 | EP0900782A1 2-Cyanoacrylic acid esters |
| 03/10/1999 | EP0900582A1 Method for removal of residual organic solvents from a crystalline bulk substance and use thereof in manufacturing pharmaceuticals |
| 03/04/1999 | WO1999010527A2 Method for isolating anionic organic substances from aqueous systems using cationic polymer nanoparticles |
| 03/04/1999 | CA2300885A1 Method for isolating anionic organic substances from aqueous systems using cationic polymer nanoparticles |
| 03/02/1999 | US5877353 Process for the preparation of benzophenone derivatives |
| 03/02/1999 | US5876570 Purification process for cyclic formals |
| 02/25/1999 | DE19736366A1 Isolating anionic substances e.g. protein, nucleic acids, from aqueous systems |
| 02/21/1999 | CA2245314A1 Method for removal of residual organic solvents and use thereof in maufacturing pharmaceuticals |
| 02/17/1999 | EP0896590A1 Rapid purification by polymer supported quench |
| 02/16/1999 | US5872259 Crystallization |
| 02/16/1999 | US5872252 Compression of ethylenically unsaturated monomers |
| 02/10/1999 | EP0895516A1 Process for separating organic monomers or auxiliaries |
| 02/03/1999 | CN1041934C Process for preparing and/or purifying bar acid or medicinal salt or ester thereof |
| 02/02/1999 | US5866006 Coated single particles and their use in fluid bed chromatography |
| 01/26/1999 | US5863437 Method and device for the separation of a mixture |
| 01/20/1999 | CN1041716C Process for purification of 1,1,1,2-tetrafluoroethane |
| 01/14/1999 | WO1999001410A1 Methods for inhibiting the polymerization of vinyl monomers |
| 01/13/1999 | EP0889868A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 01/13/1999 | EP0731787B1 Crystalline, polymorphic form of (s,s,s)-n-(1-[2-carboxy-3-(n2-mesyllysylamino)propyl]-1-cyclopentylcarbonyl)tyrosine |
| 01/12/1999 | US5859280 Adding alpha-tocopherol inhibits polymerization during processing, storage, transportation; can be mixed with hydroquinone for synergistic inhibition |
| 01/12/1999 | US5859247 Fluorous reaction and separation systems |
| 01/12/1999 | US5858169 Process for the simplified separation of multicomponent mixtures of at least partly organic origin |
| 01/07/1999 | WO1999000394A1 Calixarene tubes as cation receptors |
| 01/06/1999 | CN1041513C Composition of vinyl aromatic monomers and its inhibiting polymerization process |
| 01/05/1999 | US5856579 Adduct salts of novel substituted benzylamines and a process for optically resolving them |
| 01/05/1999 | US5856568 Process for inhibiting polymerization of a vinyl compound |
| 01/05/1999 | US5856453 Glycophospholipid |
| 01/05/1999 | CA2122211C Process for the deodorization of a formulation containing at least one thiol group-bearing compound and deodorized formulation thus obtained |
| 12/30/1998 | WO1998059016A1 Composition and method for inhibiting radical polymerisation of ethylenically unsaturated aromatic monomers |
| 12/30/1998 | WO1998058891A1 Stabilized or polymerization-inhibiting mixtures containing diorgano-hydroxylamine |
| 12/30/1998 | EP0886675A1 Polymerization inhibitor composition |
| 12/30/1998 | CN1203535A Thermally-managed separation and dewatering processes for recovering acid products |
| 12/30/1998 | CN1203363A High-efficient affinity film chromatography medium and its synthesis method |
| 12/24/1998 | DE19726671A1 Stabilisierte oder polymerisationsinhibierte Diorganohydroxylamin-haltige Mischungen Stabilized or polymerization-inhibited Diorganohydroxylamin-containing mixtures |
| 12/24/1998 | DE19725519A1 Stoffmischung, enthaltend vinylgruppenhaltige Verbindungen und Stabilisatoren A composition comprising vinyl-containing compounds and stabilizers |
| 12/23/1998 | WO1998058038A1 Mixture of substances containing compounds with vinyl groups and stabilizers |
| 12/23/1998 | EP0885180A1 Stabilized monomer composition |
| 12/23/1998 | EP0714398B1 Gamma crystalline modification of 2,2',2"-nitrilo triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite] |
| 12/23/1998 | CN1202384A Recovering method for sublimate |
| 12/23/1998 | CN1041310C Process for obtaining 10-deacetylbaccatin III |
| 12/23/1998 | CA2293577A1 Mixture of substances containing compounds with vinyl groups and stabilizers |
| 12/22/1998 | US5852206 Process for removing residual acidic chlorine from acyloxysilanes |
| 12/17/1998 | WO1998056781A1 Form v of amprenavir (vx-478) as antiviral compound |
| 12/02/1998 | EP0880385A1 Method and vaporizer for vaporizing oxidation-sensitive compounds |
| 12/01/1998 | US5843396 Method for stabilizing radiolabeled organic compounds by adding a separate stabilizing compound |
| 11/19/1998 | WO1998051647A1 Method for removing heavy metals from organic compounds |
| 11/19/1998 | WO1998051646A1 Process for the removal of heavy metals |
| 11/19/1998 | CA2287553A1 Method for removing heavy metals from organic compounds |
| 11/18/1998 | EP0878454A1 Process for purifying quasi-anhydrous organic liquids |
| 11/17/1998 | US5837831 Extraction to separate alkyl glycosides using carbon dioxide and hydrocarbons |
| 11/17/1998 | US5837759 Stabilizer mixture of chroman derivatives and inert organic solvents, and microcapsules containing this stabilizer mixture |
| 11/11/1998 | EP0877027A2 Water-stabilized organosilane compounds and methods for using the same |
| 11/11/1998 | CN1198730A Method for inhibiting polymerization of vinyl compounds |
| 11/07/1998 | CA2236893A1 Water-stabilized organosilane compounds and methods for using the same |
| 11/03/1998 | US5830324 Controlled continuous purification of propylene oxide by extractive distillation |
| 10/28/1998 | EP0710222B1 Method for inhibiting the polymerization of vinyl aromatics |
| 10/27/1998 | US5827562 Sweetener salts |
| 10/27/1998 | CA2076824C Process for removing aldehydes and/or vinyl esters from gaseous or liquid process streams |
| 10/21/1998 | EP0871527A1 Thermally-managed separation and dewatering processes for recovering acid products |
| 10/21/1998 | EP0871525A1 Liquid medium extraction purification method |
| 10/21/1998 | EP0539515B1 Non-corrosive composition and methods useful for the extraction of nucleic acids |
| 10/15/1998 | WO1998045385A1 Composition inhibiting radical polymerisation of ethylenically unsaturated monomers and method for inhibiting radical polymerisation of said monomers |
| 10/14/1998 | EP0870748A1 Process for the purification of chlorinated aromatic compounds |
| 10/14/1998 | EP0870525A1 A method for recovering sublimable material |
| 10/14/1998 | EP0768999B1 Recovery of carboxylic acid from organic solution that contains an amine and an extraction enhancer |
| 10/13/1998 | US5821380 Knoevenagel condensation of an aromatic ketone or imine with a cyanoacetic ester; stabilizers against the action of light, oxygen and heat |
| 10/06/1998 | US5817238 Column chromatography, acidic cation exchange resin |
| 09/29/1998 | US5814231 Separation of liquid eutectic mixtures by crystallization on cold surfaces and apparatus for this purpose |
| 09/29/1998 | US5814193 Electromagnetic radiation to convert halide impurities to lower boiling or/and higher boiling halide compound, separation by distillation |
| 09/23/1998 | EP0866061A1 Process for separating pyrimidine derivatives from aqueous solutions |
| 09/22/1998 | US5811072 Deoxynucleoside triphosphate or ribonucleoside triphosphate labelled with beta-emitting nuclide selected from p32, p33 or s35 |
| 09/18/1998 | CA2232478A1 Process for the separation of pyrimidine derivatives from aqueous solutions |
| 09/16/1998 | EP0541556B1 Stabilization of biological macromolecular substances and other organic compounds |
| 09/01/1998 | US5801279 Method for removing iodine compounds contained in organic medium |
| 08/26/1998 | EP0551352B1 Method and apparatus for recovering chemical compounds from the effluent stream of a supercritical fluid extraction |
| 08/26/1998 | CN1191495A Liquid medium extraction purification method |
| 08/20/1998 | WO1998035929A1 Dicarboxylic acid crystallizates |
| 08/20/1998 | CA2280592A1 Dicarboxylic acid crystallizates |
| 08/19/1998 | EP0724557B1 A process for separating lipophilic compounds |
| 08/13/1998 | DE19705329A1 Dicarbonsäurekristallisate Dicarbonsäurekristallisate |
| 08/11/1998 | US5792877 Separating non-oxidizable from oxidizable taxane derivatives |
| 08/11/1998 | US5792857 Substituted derivatives of per (3,6-anhydro) cyclodextrins, their preparation process and their use for separating ions |
| 08/05/1998 | EP0856343A1 Purifier and purifying method for polymerizable organic compounds |
| 08/05/1998 | CN1189485A Purifier and purifying method for polymerizable organic compounds |
| 08/04/1998 | US5789647 Pre-dried raw material; extraction with compressed gas; optional entraining agent; cooling; crystallization |
| 08/04/1998 | CA2101526C Inhibiting popcorn polymer formation with compounds incorporating group iv elements |
| 07/30/1998 | WO1998032717A1 Method for eliminating inhibitors of polymerisation of monomer mixtures using an alumina with optimised form |
| 07/30/1998 | WO1998032716A1 Method for eliminating inhibitors or polymerisation of monomer mixtures using a doped alumina |
| 07/30/1998 | WO1998032715A1 Method for eliminating inhibitors of polymerisation of monomer mixtures using an optimised alumina |
| 07/30/1998 | WO1998032519A1 Amine heat stable salt neutralization having reduced solids |
| 07/29/1998 | EP0855379A1 Methods for the preparation of benzophenones derivatives |
| 07/29/1998 | EP0855376A1 Method for inhibiting polymerization of vinyl compounds |
| 07/29/1998 | CN1188755A Methods for preparation of benzophenone derivatives |
| 07/28/1998 | US5785859 Condensation of steam phase with recovery of heat of condensation |
| 07/22/1998 | EP0671975B1 Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compounds |
| 07/21/1998 | US5783725 Addition of alkali and/or alkaline earth metal carbonates and/or bicarbonates |