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WO/1996/018577 |
A process for the preparation of an amorphous alumino-silicate derivative which involves reacting a solid corresponding starting material with MOH where M is alkali metal or ammonium cation. The solid corresponding starting material may ...
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WO/1996/017805 |
The invention in essence concerns a process for producing demineralised sterile water from drinking water. The process is characterised by the fact that the drinking water is drawn through a strongly acidic monospherical cation exchanger...
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WO/1996/014125 |
A method for the removal, separation, and concentration of cesium cations from a source solution which may contain larger concentrations of other alkali metal ions comprises bringing the source solution into contact with a polymeric resi...
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WO/1996/013533 |
Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol...
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WO/1996/009984 |
Novel composite materials useful for removing heavy metal ions from solutions, such as aqeuous waste streams, comprise an inorganic ceramic support, such as silica gel, having terminal hydroxy groups, to the oxygen of which a ligand is c...
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WO/1996/009116 |
Disclosed are rationally designed mixed mode resins which are useful in recovering a target compound from an aqueous solution and methods for use of such resins. The resins described herein have a hydrophobic character at the pH of bindi...
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WO/1996/009253 |
This invention refers to an original solution for the purification of contaminated water streams with the activated sludge method, involving: a) a two-stage aeration system operating at high rate and low rate conditions respectively, whe...
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WO/1996/007615 |
The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant...
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WO/1996/003210 |
It is the aim of the invention to provide a process for separating metal ions from a solids-charged solution, in which a pre-treated commercially available ion exchanger can be used. In addition, a pre-treated ion exchanger is to be prop...
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WO/1995/033553 |
The present invention relates to porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead communicate with the surface of the microbea...
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WO/1995/032792 |
Azlactone-functional membranes prepared by solvent phase inversion techniques are disclosed. Adduct membranes prepared by the reaction of azlactone-functional membranes with nucleophilic reagents are also disclosed. Both azlactone-functi...
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WO/1995/030482 |
Method for the demineralization of a liquid containing dissolved organic substances and mineral salts. The liquid is treated by percolation thereof on a strong monovalent cationic ion exchange resin (1), passing a given batch of liquid f...
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WO/1995/030467 |
A functionalized macroporous poly(styrene divinylbenzene) particle comprises at least one ionic functional group covalently bonded thereto, the functionalized particle having sorptive capability towards an analyte, said functional group ...
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WO/1995/029754 |
A method is disclosed for controlling the coupling of low molecular weight ligands to activated sites on a support in competition with a quencher of the activated sites. Derivatized supports produced by the method have optimal ligate bin...
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WO/1995/029008 |
A method for removing, separating and concentrating certain selected ions from a source solution that may contain larger concentrations of other ions comprises bringing the source solution in contact with a composition comprising an ion-...
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WO/1995/026795 |
A separation process is described for separating a known material from a mixture of materials (which may contain unknown materials) using displacement chromatography. The process comprises passing a mixture of materials, including a know...
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WO/1995/025066 |
Crystalline borophosphates having general formula (I) are disclosed, as well as a process for producing the same from solutions, by a sol-gel process and high temperature reactions, and their use, for example as ion exchangers, sorption ...
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WO/1995/023827 |
The invention relates to a process for producing cellulose shaped bodies, said process comprising the following steps: (A) dissolving cellulose in an aqueous solution of a tertiary amino oxide, in particular N-methylmorpholine-N-oxide (N...
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WO/1995/023885 |
The invention relates to a process for producing cellulose shaped bodies, said process comprising the following steps: (A) dissolving cellulose in an aqueous solution of a tertiary amino oxide to form a cellulose solution which can be sh...
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WO/1995/018159 |
A gold complex and/or silver complex selective ion exchange resin comprising a polyurethane matrix having an amine functionality and processes for recovery of gold and/or silver from solutions using the above ion exchange resin.
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WO/1995/017955 |
Adsorption material, preferably substantially spherical, wherein support particles having cellulose capable of binding charged particles such as proteins, are distributed over the exterior surfaces thereof, and a method for generating su...
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WO/1995/017250 |
The present invention provides a system and a process for removing contaminants such as CO2 and mobile cations and anions from aqueous solutions. The system and the process contemplate the use of thermally sterilizable aqueous polishing ...
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WO/1995/016730 |
A method for making a composite fluorinated ion exchange membrane is provided comprising applying a continuous fluorinated ion exchange polymer film to a porous reinforcing substrate, preferably made from a polyolefin such as linear high...
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WO/1995/014531 |
The present invention relates to particles for binding monovalent cations, in particular microcapsules, comprising a) a nucleus containing a cation exchanging material and applied thereon; b) a coating comprising a membrane being permeab...
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WO/1995/013861 |
A separation method comprising the steps: (i) contacting an aqueous liquid that contains a dissolved substance that is to be enriched with a polymer under conditions allowing selective partition of said substance to said polymer, whereaf...
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WO/1995/009695 |
The invention relates to separator materials for ion-exchange chromatography based on hydroxyl group containing base carriers on the surfaces of which polymers are covalently bonded, in which a) the base carrier contains aliphatic hydrox...
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WO/1995/009694 |
The invention relates to sorbents based on hydroxyl group containing base carriers for affinity chromatography on the surface of which polymers are covalently bonded, in which a) the substrate contains aliphatic hydroxyl groups, b) the c...
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WO/1995/001838 |
A method for producing modified activated carbon materials is provided comprising treating activated carbon material in a halogen containing atmosphere at a temperature of less than 180 �C and treating the resultant product with a nucl...
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WO/1995/000441 |
Amorphous derivatives of kaolin group minerals, characterised by high specific surfaces and/or high cation exchange capacities and a 27Al MAS NMR spectrum having a dominant peak at ~55 ppm relative to Al(H2O)63+. Such derivatives are pre...
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WO/1994/026380 |
The invention relates to a method for the fractionation of sulphite cooking liquor by a chromatographic simulated moving bed system in which the liquid flow is effected in a system comprising at least two chromatographic sectional packin...
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WO/1994/026684 |
The present invention is an improved process for the recovery of ethylene glycol from spent glycol generated in the manufacture of polyethylene terephthalate. The spent glycol typically consists of metal oxide catalyst residues, low mole...
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WO/1994/020214 |
Described is an environmentally sound method for using acid waste water with the simultaneous formation of a sorbant, the method being characterized in that acid waste water arising from clay production and containing, as the main compon...
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WO/1994/019302 |
A process for the production of high purity and ultrapure bisphenol-A is provided in which 4-12 mol phenol is reacted with 1 mol acetone in a multistage suspended bed reactor column (41) comprising a plurality of perforated trays (42) an...
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WO/1994/017213 |
The invention relates to a method for the fractionation of molasses using a chromatographic simulated moving bed system in which the liquid flow is effected in a single direction in a system comprising at least two chromatographic partia...
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WO/1994/011408 |
Insoluble, slightly-swelling polymers containing amino groups obtainable from popcorn polymers which contain units of structure (I), in which R, R1 = H or C1 to C4 alkyl, by the separation of the R-CO- group from at least 2 % of the mono...
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WO/1994/010091 |
A sorbent for removing microorganisms and inorganic and organic impurities from water is based on activated carbon and ion exchangers, and comprises: activated carbon in the form of activated carbon with hydroxyl anion exchange groups; a...
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WO/1994/006822 |
A method of isolating a biomolecule from a medium containing biomolecules by ion exchange wherein the ion exchange material consists of a material having ion exchanging groups which can be transformed from a charged form to an uncharged ...
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WO/1994/006850 |
A novel, heterogeneous ion exchange membrane, methods for making such a membrane, and devices containing such a membrane are disclosed. Such membranes comprise linear low or linear medium density polyethylene or high molecular weight hig...
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WO/1994/004271 |
Inorganic hydrated metal oxide and metal silicate gels are supported on the surface of particles of porous material by precipitation therein without significant deposit within pores of the support material and without encapsulating the p...
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WO/1994/003398 |
A process is disclosed for treating aqueous flushing solutions from zinc phosphatization processes of metallic surfaces. The solutions containing heavy metal ions are contacted with solid, strongly acid cation exchanger resins containing...
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WO/1994/003573 |
Alkali metal aluminosilicate of the zeolithe P type having the oxide formula M2/nO.Al2O3.(1.80-2.66)SiO2.CH2O, y being the water content, proves to have both excellent Calcium Effective Binding Capacity and Calcium Uptake Rate at tempera...
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WO/1994/002240 |
Gelled compositions for use as adsorbents and ion exchangers. The compositions include a specific extractant, such as di(2-ethylhexyl) dithiophosphoric acid or an alkali salt thereof, an organic solvent and a halopolymer modified by subs...
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WO/1994/002417 |
Removal of sodium values from sodium contaminated solids, such as red mud, is achieved by contact of a slurry of such solids with a particulate cation exchanger and occurs at an enhanced rate compared with water washing or washing with a...
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WO/1994/000237 |
An ion exchange resin comprising an ion exchange material dispersed or distributed throughout a polyurethane matrix. The ion exchange material is typically a second polymer which has been chemically modified after dispersion or distribut...
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WO/1994/000214 |
This invention relates generally to modified porous solid supports and processes for the preparation and use of same. In particular, passivated porous mineral oxide, polymeric, or polymer-coated mineral oxide supports are disclosed which...
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WO/1994/000215 |
A method and apparatus for chromatographic separations comprising a conductive-polymer stationary phase for controlled interaction with ionic species. The conductive polymer stationary phase is held at an initial voltage while analyte co...
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WO/1993/025592 |
Crosslinked copolymer beads suitable for making polymeric adsorbents and ion-exchange resins are prepared by a substantially adiabatic suspension copolymerization of at least one monoethylenically unsaturated monomer with at least one po...
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WO/1993/022094 |
An ion exchange treatment method in the production or regeneration of an aqueous electrical discharge machining fluid, wherein untreated water is forced into a column (4) packed with an ion exchange resin and is passed through the resin ...
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WO/1993/018437 |
The present invention provides methods for producing photoresist compositions having a very low level of metal ions, utilizing specially treated ion exchange resins. A method is also provided for producing semiconductor devices using suc...
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WO/1993/013855 |
Mineral aluminosilicates are pretreated by dry heating, for ion-exchange separation of diverse cationic materials, such as recovery of ammonium or monovalent amine from waste-water also containing divalent alkaline earth materials. A hyd...
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