Patent application number | Description | Published |
20080234398 | Monodisperse weakly acidic cation exchangers - The present invention relates to a process for producing novel monodisperse cation exchangers of the poly(meth)acrylic acid type, the ion exchangers themselves, and also use thereof and to the use of intermediate products as supports for enzymes and the systems resulting therefrom as enzyme catalysts for the preparation of fuels and in transesterification reactions and esterification reactions. | 09-25-2008 |
20080272055 | Conditioning of ion exchangers for adsorption of oxoanions - The present invention relates to the use of inorganic salts for increasing the adsorption of oxoanions and/or thioanalogues thereof to metal-doped ion exchangers, preferably to iron oxide/iron oxyhydroxide-containing ion exchangers, preferably from water or aqueous solutions, and also the conditioning of these metal-doped ion exchangers having increased adsorption behaviour toward oxoanions and/or thioanalogues thereof by using inorganic salts with the exception of amphoteric ion exchangers which have both acidic and basic groups as functional groups. | 11-06-2008 |
20090030243 | POLYOL REFINING - The subject of the present invention is a method for refining of polyols, preferably glycerol, by means of monodispersed ion exchangers in a purification unit of ion exclusion process and a mixed bed. | 01-29-2009 |
20090045137 | Method of producing monodisperse chelate resins - The present invention relates to a method of producing novel monodisperse chelate resins based on crosslinked polymer beads containing aminomethyl groups and/or aminomethyl nitrogen heterocyclic groups that have a high uptake capacity for heavy metals and rapid kinetics. | 02-19-2009 |
20090101586 | ADSORPTION OF RADIONUCLIDES - The present application relates to a process for the adsorption of radionuclides from media, preferably waters or aqueous solutions, as arise, for example, in nuclear plants, preferably nuclear power plants, by contacting the medium to be treated, preferably water or aqueous solutions, with a mixed bed which is provided additionally with at least one covering layer of a monodisperse, macroporous ion exchanger having a median bead diameter smaller than the ion exchanger used in the mixed bed. | 04-23-2009 |
20090107918 | AMPHOTERIC ION EXCHANGERS - The present invention relates to novel amphoteric ion exchangers which possess not only phthalamide groups of the formula (I) | 04-30-2009 |
20090158896 | Monodisperse, Macroporous Chelating Resins in Metal Winning - The present invention relates to the use of monodisperse, macroporous chelating resins in the recovery of metals in hydrometallurgical processes, in particular in resin-in-pulp processes. | 06-25-2009 |
20090218289 | RADIONUCLIDE RESINS - The present application relates to a process for the adsorption of radionuclides from waters or aqueous solutions such as arise in nuclear plants, by contacting the water to be treated or the aqueous solutions with monodisperse, macroporous ion exchangers. | 09-03-2009 |
20110089116 | METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS - The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having aminomethylphosphonic acid groups and iminodimethylphosphonic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, and a markedly lengthened loading duration of the chelating resin, to the chelating exchangers themselves, and also to uses thereof. | 04-21-2011 |
20110132844 | METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS - The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having acetic acid and/or iminodiacetic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, to the chelating exchangers themselves, and also to uses thereof. | 06-09-2011 |