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7504036 Method of making and using modified anion exchange materials with metal inside the materials  
The present invention relates, generally, to the art of impregnating metal complexes into anion exchange materials to provide improved anion exchange materials with a metal inside the materials...
7482387 Method for processing spent ion-exchange resins  
A method for processing spent ion-exchange resins is provided by reducing the volume of the spent ion-exchange resins through a wet oxidation process and solidifying the residual wet oxidation...
7294654 Method of making thermally regenerable salt sorbent resins  
A heterogenous hybrid thermally regenerable salt sorbent resin is formed from a hybrid precursor resin. The hybrid precursor resin is formed by intimately mixing a dry, solid crosslinked...
7163964 Method for preparing an ion exchange media  
This invention presents an ion exchange media including a plurality of cation exchange zones and anion exchange zones in flow paths that are contained in a substantially nonporous resin transport...
7094469 Porous or non-porous substrate coated with an immobilized polymeric composition having sulfonyl groups and hydrophilic functional groups and process  
A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is...
7071240 Carboxylic cationites and methods of manufacture  
A method for preparing synthetic polymerized resins for ion exchange, namely, carboxylic cationites, which are suitable as sorbents for preparative separation and purification of biologically...
7045057 Preparation of homogeneously loaded ion exchangers  
A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with...
6919382 Preparation and uses of conjugated solid supports for boronic acids  
The invention provides novel solid supports comprising dihydroxyalkyl aminoalkyl and dihydroxyalkylaminobenzyl groups, and methods for making and using them. The supports are particularly useful...
6911481 Method of regenerating ion exchange resin  
A method of regenerating an ion exchange resin, comprising the steps of packing a used ion exchange resin in a regeneration tower; and repeating at least twice a step comprising passing an aqueous...
6875415 Resin preconditioning methods using carbon dioxide and methods for purifying hydrogen peroxide  
Provided are a preconditioned resin and methods of preparation thereof as well as methods for purifying hydrogen peroxide solutions. The method includes preconditioning an anion exchange resin,...
6693139 Treated ion exchange resin and method for treatment thereof  
This invention relates to ion exchange resins that have a reduced amount of physically adsorbed organic compounds, as well as methods of producing and using such resins. In particular, the amount...
6624206 Process for the preparation of free-flowing strongly acidic cation exchangers  
The invention relates to processes for the preparation of free-flowing end products of strongly acidic cation exchangers. In the case of the strongly acidic cation exchangers prepared by the...
6593379 Method for converting a weakly acid ion exchanger material from the H form into the Ca form  
The invention relates to a method and a device for converting a preferably weak acid ion-exchange material from the H form into the Ca form, according to which the ion-exchange material is brought...
6508939 Mixed bed type sugar solution refining system and regeneration method for such apparatus  
By passing an alkali regenerating agent A through a basic anion exchange resin ( 3 ), and through a strongly acidic cation exchange resin ( 4 ), the basic anion exchange resin can be regenerated...
6448299 Regeneration of strong-base anion-exchange resins by sequential chemical displacement  
A method for regenerating strong-base anion exchange resins utilizing a sequential chemical displacement technique with new regenerant formulation. The new first regenerant solution is composed of...
6437010 Device and method for the regeneration of mixed ion exchange resin beds  
A method for desalination of water or of aqueous solutions derived from industrial process that use two columns: the first treatment column containing a mixed bed of ion exchange resins, in which...
6436294 Process for modifying the metal ion sorption capacity of a medium  
A process for modifying a medium is disclosed that includes treating a medium having a metal ion sorption capacity with a solution that includes: A) an agent capable of forming a complex with metal...
6407143 Method and solvent composition for regenerating an ion exchange resin  
A method and composition for removing perchlorate from a highly selective ion exchange resin is disclosed. The disclosed approach comprises treating the resin in a solution of super critical or...
6372143 Purification of produced water from coal seam natural gas wells using ion exchange and reverse osmosis  
A method and apparatus are provided for treating produced water to lower the total dissolved solids of the water for safe discharge to the environment. The produced water is passed through a weak...
6358421 Method for countercurrent regeneration of an ion exchange resin bed  
An improved method for regenerating ion exchange resin in a treatment tank having a flow direction, which includes the steps of providing a supply of regenerant under pressure into the tank, and...
6340712 Non-chloride containing regenerant composition for a strong acid cation exchange resin of a water softener  
Non-chloride containing regenerant compositions of potassium acetate or potassium formate, at least one surfactant and at least one chelating agent as well as methods for efficient regeneration of...
6281255 Methods for regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate  
Regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate is disclosed. Preferably, the alkali metal is sodium. The...
6248797 Supercritical carbon dioxide extraction of contaminants from ion exchange resins  
A method for extracting leachable contaminants from ion exchange resins comprises exposing the resin to supercritical carbon dioxide for a sufficient interval of time to allow at least a portion of...
6177027 Iron-complexing compositions containing stannous chloride  
Iron-complexing or scavenging compositions are provided having particular utility as downhole well treatments or as a part of regenerating media for cation exchange resins. The compositions may be...
6129836 Two-chamber fluid control valve and water softener incorporating same  
A two-chamber fluid control valve for a water softener system is provided. The valve includes a primary chamber having a primary inlet for passage of a primary fluid into the primary chamber and a...
6060526 Mixed bed ion exchange resin system and method of preparation  
A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed....
6037381 Preparation of polytetrahydrofuran with terminal hydroxyl groups using ion exchangers  
The invention relates to a process for preparing hydroxyl-containing polymers, in particular for preparing polytetrahydrofuran with terminal hydroxyl groups, from the corresponding...
6017969 Ion-exchange resins, their preparation and uses  
An ion-exchange resin stabilized against shrinkage, the resin being loaded with at least one amphiphilic ion in the absence of sodium cations. Also a process for removing iodide compounds from a...
6011074 Ion-exchange polymers having an expanded microstructure  
Novel organic ion-exchange polymers and membranes formed from these polymers provide improved performance in electrolytic cells. The membranes exhibit an expanded micro-structure as the result of...
5955510 Process for the regeneration of ion exchange resins in a fixed double-bed type apparatus  
The present invention relates to a process for the regeneration of the resins in a fixed double-bed type ion exchange apparatus and the apparatus thereof. Said process of regeneration comprises of...
5951874 Method for minimizing wastewater discharge  
Wastewater discharge, which is generated in an ion exchange regeneration system having a cation exchange bed and an anion exchange bed, is minimized by circulating a displacement rinse through a...
5932106 Process for regeneration of ion-exchange resins used for sugar decolorization, using chloride salts in a sucrose solution alkalinized with calcium hydroxide  
Process for regeneration of ion-exchange resins, used in sugar decolorization, using a sucrose solution with sodium or calcium chloride, or another chloride, namely potassium or a mixture of those...
5902833 Mixed bed exchange resin system and method of preparation  
A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed....
5830990 Low metals perfluorooctanoic acid and top anti-reflective coatings for photoresists  
The present invention provides methods for producing top anti-reflective coating compositions having a very low level of metal ions, utilizing a specially washed and modified ion exchange resin. A...
5759373 Porous ion exchanger and method for producing deionized water  
A porous ion exchanger which has a porous structure having ion exchange resin particles bound by a binder polymer, and which has a water permeability of at least 30 kgcm -1 hr -1 under a...
5665783 Recyclable regenerant for weak acid ion exhange resins  
A composition for regenerating spent weak cation exchange resin and a method of utilization including salts of α-hydroxy carboxylic acids or o-hydroxy benzoic acids. The following steps are...
5624789 Metal ion reduction in top anti-reflective coatings for photoresisis  
The present invention provides methods for producing top anti-reflective coating compositions having a very low level of metal ions, utilizing specially treated ion exchange resins. A method is...
5601722 Method for the preparation of an ion exchanger for cesium ions and method for the regeneration thereof  
Proposed is a method for the preparation of an efficient ion exchanger useful for separation and recovery of cesium ions from an aqueous solution such as strongly acidic waste solutions containing...
5474704 Regeneration compositions for cationic exchange resins  
Improved compositions for the treatment and regeneration of ion exchange resin beds typically used in water softening systems are provided, which possess enhanced iron sequestering capabilities....
5455282 Process of regenerating sulfonic acid cation exchange resins with a mercaptoethylamine or thiazolidine  
The invention relates to repeatedly regeneratable ion exchanger resins with a thin covering of alkyl-SH groups.
5441689 Process of making regenerated cellulose articles  
Aqueous solutions of an amine N-oxide such as N-methyl morpholine N-oxide used in the manufacture of regenerated cellulose can be purified by passage through a strongly basic anion-exchange resin....
5428075 Method for regenerating a sulfonated aromatic organic polymeric ion-exchange resin bed having deactivated aminoorganomercaptan groups with phenol  
A method is provided for regenerating deactivated sulfonated aromatic organic ion-exchange resin beds, such as a polystyrene ion-exchange resin bed, having chemically combined amino organo...
5428074 Method for separating ion exchange resins and for removing metallic foulants from the resins  
In a method for separating and regenerating a mixed bed of exhausted anion and cation resins and for removing metallic foulants from the mixed bed, substantially all of the cation and anion resins...
5423965 Process and device for demineralizing aqueous solutions using ion exchangers  
An electrolytic process and apparatus are disclosed for regenerating separate bed ion exchange resins used to demineralize aqueous solutions, preferably softened water, without the use of...
5393505 Process for increasing the acid gas absorption capacity of contaminated alkanolamine solutions  
The present invention includes a process for rejuvenating a spent aqueous alkanolamine solution comprising use of alkyl-substituted ammonium-containing organic base treatment to remove inorganic ions.
5391301 Method of regenerating resin beads for use in water purification  
Water is purified to reduce pollution to less than 0.3%, by mixing re-generated and non re-generated anion and cation resins, followed by appropriate final mixing of both when re-generated, for...
5389261 Condensate polisher regenerant system  
High pressure boiler condensate returns are polished and softened with a macroreticular cation exchange resin, and the resin is regenerated with a readily ionizable organic acid salt of a...
5387348 Method of mixed-bed filtration and demineralization with ion-exchange resins  
A method of mixed-bed filtration and demineralization for removing suspended impurities from the primary cooling water in a power plant by means of a demineralizer having a mixed bed formed of a...
5348659 Countercurrent regeneration process  
A method of regenerating an ion exchanger which is used to treat a solution introduced to the ion exchanger in a downward charging direction. The ion exchanger comprises a non-constrained bed of...
5346623 Counter-current process for the rapid regeneration of ion exchange materials in an unrestrained bed  
A method of regenerating an ion exchanger which is used to treat a solution introduced to the ion exchanger in a downward changing direction. The ion exchanger contains a non-constrained bed of ion...
Matches 1 - 50 out of 237 1 2 3 4 5 >