| Patents for B01J 45 - Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties (1,510) |
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| 05/17/2000 | EP0925313B1 Insoluble polymers which can swell only slightly with modified amino groups, processes for their preparation, and their use |
| 05/16/2000 | US6063286 Demetallization of polymers with carbon disulfide or formaldehyde and nucleophilic agents |
| 05/10/2000 | CN1252845A Metal chelate-forming fibers, process for producing the same, process for sequestering with the same, and filter produced therefrom |
| 05/03/2000 | EP0996594A1 Process for the removal of pentavalent arsenic from water |
| 04/19/2000 | CN1251145A Chelate-forming fiber, process for preparing same, and use thereof |
| 04/12/2000 | EP0992283A2 Method and product for selectively removing ions from aqueous solutions |
| 03/15/2000 | CN1050362C Process of removing ions from solutions using complex with sulfur-containing hydrocarbons |
| 03/08/2000 | EP0984095A1 Metal chelate-forming fibers, process for producing the same, process for sequestering with the same, and filter produced therefrom |
| 02/24/2000 | DE19837294A1 Verfahren zur Herstellung von Selektivaustauschern A process for preparing Selektivaustauschern |
| 02/23/2000 | EP0980711A1 Method for preparing selective exchangers |
| 01/26/2000 | EP0974694A1 Chelate-forming fiber, process for preparing the same, and use thereof |
| 01/25/2000 | US6017457 Matched ion polynucleotide chromatography which enhances the separation of polynucleotides; extending the maximum useful life of a chromatographic separation column by protecting the column from the multivalent cation contamination |
| 01/19/2000 | EP0972566A2 Affinity immobilised metal resins |
| 01/19/2000 | EP0971790A1 Apparatus and method for ammonia removal from waste streams |
| 12/23/1999 | WO1999065607A1 Method for separation on cation exchangers |
| 12/22/1999 | EP0895521B1 Modified, finely divided, water-insoluble aziridine polymers |
| 12/07/1999 | US5997742 Method for performing polynucleotide separations using liquid chromatography |
| 11/24/1999 | EP0958055A1 Poly n-cyclic aromatic ligands bonded to solid supports for removing and concentrating ions from solutions |
| 11/23/1999 | US5989430 Adsorption of antimony cations from electrolyte solution onto anionic polymer ion exchange resin, desorption with acidic solution, neutralization of effluent to precipitate antimony hydroxide for recovery |
| 11/09/1999 | US5980987 Method of making a composition for separating and concentrating certain ions from mixed ion solutions |
| 11/04/1999 | WO1999056287A1 Method for treating radioactive waste |
| 10/21/1999 | WO1999042434A3 Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 10/21/1999 | DE19916896A1 Particles for chelating metal ions, useful in cosmetic, pharmaceutical and food products and products for treating liquids, especially water |
| 10/20/1999 | EP0949959A2 Polymeric membranes and polymer articles having hydrophilic surface and method for their preparation |
| 10/19/1999 | US5968363 Selective separation of cations in mixture using synthetic resin support particles having bound crown ether groups and anionic groups whereby cation which forms complex with crown ether is eluted secondly |
| 10/05/1999 | US5962641 Method for purification of recombinant proteins |
| 08/31/1999 | US5945170 Process for separating multivalent metal Ions from autodeposition compositions and process for regenerating ion exchange resins useful therewith |
| 08/31/1999 | US5945079 Oxygen-selective sorbents |
| 08/26/1999 | WO1999042434A2 Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 08/19/1999 | DE19806578A1 Production of aqueous hydroxylamine solution containing essentially no metal ions, used in electronics industry |
| 08/18/1999 | EP0935606A1 Method for purification of recombinant proteins |
| 07/29/1999 | WO1999037399A1 Method for preparing polyazacycloalkanes grafted on silica gel and use of grafted compounds |
| 07/22/1999 | WO1999036151A1 Method of purifying photoacid generators for use in photoresist compositions |
| 06/30/1999 | EP0925313A1 Insoluble polymers which can swell only slightly with modified amino groups, processes for their preparation, and their use |
| 06/22/1999 | US5914044 Cation-complexing ligand bound to inorganic support through linking group |
| 06/02/1999 | EP0919570A1 Cation exchangers or chelating agents and process for the preparation thereof |
| 06/01/1999 | US5908557 Process for the removal of pentavalent arsenic from water |
| 05/25/1999 | CA2162740C Oxygen-selective sorbents |
| 05/19/1999 | CN2319114Y Water distribution appts. |
| 05/14/1999 | WO1999022933A1 System for extracting soluble heavy metals from liquid solutions |
| 05/06/1999 | WO1999021654A1 Inorganic-organic hybrid gels for extracting species such as lanthanides and actinides, and their preparation |
| 04/21/1999 | CN1214336A Process for production of carboxylic acid or anhydrides thereof |
| 04/07/1999 | EP0906357A1 Polymerisable polyamide derivatives |
| 04/06/1999 | US5891574 Polyazacycloalkanes, tri-, tetra- or penta-azamacrocyclic complexes, processs for the production of these substituted or unsubstituted polyazacycloalkanes grafted to a support and uses of polyazacycloalkanes and the aforementioned complexes |
| 03/23/1999 | US5885327 Rapid elution of adsorbed aurocyanide from guanidine-functional ion exchange resin with caustic solution containing elution enhancing amount of alkali metal cyanide salt |
| 03/02/1999 | USRE36118 Chemical process of separating metals from an organic complex |
| 02/17/1999 | EP0799486B1 Process for decontaminating radioactive materials |
| 02/10/1999 | EP0895521A1 Process for producing finely divided, water-insoluble aziridine polymers |
| 02/03/1999 | CN1041914C Process for removal of corrosion metal contaminants from liquid compositions |
| 02/02/1999 | US5865994 Bifunctional crown ether-based cation-exchange stationary phase for liquid chromatography |
| 01/20/1999 | EP0891364A1 Calixpyrroles, calixpyridinopyrroles and calixpyridines |
| 01/20/1999 | CN1041694C Method for expected ions thickened and separated from multi-ion source solution and used solid compound |
| 12/30/1998 | EP0823866A4 Process for separating multivalent metal ions from autodeposition compositions |
| 12/23/1998 | CN1202484A Purifying method for dimethylsulfoxide (DMSO) |
| 12/22/1998 | US5852786 Process for decontaminating radioactive materials |
| 11/19/1998 | WO1998051619A1 Process for the removal of pentavalent arsenic from water |
| 11/19/1998 | CA2289734A1 Process for the removal of pentavalent arsenic from water |
| 11/18/1998 | EP0878466A1 Process for the purification de dimethylsulphoxide (DMSO= |
| 11/15/1998 | CA2235789A1 Dimethylsulfoxide (dmso) purification process |
| 11/03/1998 | US5830362 Cyclic polyethers with polythiophene or polypyrrole end groups |
| 10/29/1998 | WO1998048098A1 Metal chelate-forming fibers, process for producing the same, process for sequestering with the same, and filter produced therefrom |
| 10/28/1998 | EP0874004A1 Improved chelating resins |
| 10/28/1998 | CN1197085A Improved chelating resins |
| 10/21/1998 | EP0789608A4 Processes for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins |
| 10/21/1998 | CA2234880A1 Improved chelating resins |
| 10/14/1998 | CN1196095A Method for recovery of gold using extraction having guanidyl functionality |
| 10/08/1998 | WO1998043738A1 Apparatus and method for ammonia removal from waste streams |
| 10/06/1998 | US5817239 Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with an hydroxyquinoline moiety |
| 10/01/1998 | WO1998042910A1 Chelate-forming fiber, process for preparing the same, and use thereof |
| 09/29/1998 | US5814498 Process for the recovery of organic acids and ammonia from their salts |
| 09/29/1998 | US5814226 Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with a thiol and/or amine moiety |
| 09/17/1998 | WO1998040144A1 Bifunctional crown ether-based cation-exchange stationary phase for liquid chromatography |
| 09/08/1998 | US5804606 Suspension polymerization of mono- and di-vinyl aromatics, oxygen-containing crosslinkers in presence of phase extender; improved stability, capacity. |
| 08/04/1998 | US5789496 Contacting with phenol-formaldehyde polymers for salt formation and as ligands |
| 07/29/1998 | EP0828552A4 Process for recovery of metal ions |
| 07/28/1998 | CA1339973C Process for the production of an electrolyte for the production of alkali dichromates and chromic acid |
| 07/14/1998 | US5779906 Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with a pyrogallol moiety |
| 06/30/1998 | US5772889 System and method for performing nucleic acid separations using liquid chromatography |
| 06/16/1998 | US5766478 Water-soluble polymers for recovery of metal ions from aqueous streams |
| 05/20/1998 | CN1182379A Process for separating multivalent metal ions from autodeposition compositions |
| 05/07/1998 | WO1998006739A8 Method for purification of recombinant proteins |
| 04/14/1998 | US5738791 Contacting with hydrophobic, isotropic, microporous polymer having compatible hydrophobic organic complexing liquid immobilized in solidified polymer mass |
| 03/19/1998 | WO1998011145A1 Insoluble polymers which can swell only slightly with modified amino groups, processes for their preparation, and their use |
| 03/18/1998 | EP0828552A1 Process for recovery of metal ions |
| 03/12/1998 | DE19636883A1 Unlösliche, nur wenig quellbare Polymerisate mit modifizierten Aminogruppen, Verfahren zu ihrer Herstellung und ihre Verwendung Insoluble, only slightly swellable polymers having modified amino groups, processes for their preparation and their use |
| 03/11/1998 | EP0827424A1 Composition of matter |
| 03/05/1998 | WO1998008595A2 Polymeric membranes and polymer articles having hydrophilic surface and method for their preparation |
| 03/04/1998 | CN1175318A Process for decontaminating radioactive materials |
| 02/19/1998 | WO1998006739A1 Method for purification of recombinant proteins |
| 02/18/1998 | EP0823866A1 Process for separating multivalent metal ions from autodeposition compositions |
| 02/17/1998 | USRE35730 Apparatus and process to regenerate a trivalent chromium bath |
| 02/11/1998 | CN1172870A Multi-dentate ion exchange chelating fibre and its synthetic method |
| 02/05/1998 | WO1998004598A1 Cation exchangers or chelating agents and process for the preparation thereof |
| 12/31/1997 | WO1997049754A1 Polymerisable polyamide derivatives |
| 12/31/1997 | WO1997049492A1 Poly n-cyclic aromatic ligands bonded to solid supports for removing and concentrating ions from solutions |
| 12/31/1997 | CA2254881A1 Poly n-cyclic aromatic ligands bonded to solid supports for removing and concentrating ions from solutions |
| 12/30/1997 | US5702611 Process for removing heavy metal ions by ion exchange |
| 12/10/1997 | EP0621801B1 Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions |
| 12/10/1997 | CN1167507A Use of a solvent impregnated crosslinked matrix for metal recovery |
| 12/09/1997 | US5695882 Reaction product of polyamine with short chain hydrocarbylsilane bonded to hydrated surface of extraction material |