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| Number | Title | Issue Date |
| 7989514 | Strong-acid cation exchange resins A strong-acid cation exchange resin comprising a plurality of acid groups which are partially neutralized with a cation of formula (I); wherein R1 at each occurrence independently is hydrogen or a Ci-4-alkyl group, R2 at each occurrence indepen... | 08/02/2011 |
| 7964651 | Sulfonyl grafted heterocycle materials for proton conducting electrolytes A proton conducting polymer includes a polymer backbone and a heterocyclic compound attached to the polymer backbone. The heterocyclic compound includes a sulfonyl functionality bonded to heterocyclic compound. ... | 06/21/2011 |
| 7435498 | Polymer electrolyte membranes crosslinked by nitrile trimerization A method is provided for making a crosslinked polymer electrolyte, typically in the form of a membrane for use as a polymer electrolyte membrane in an electrolytic cell such as a fuel cell, by trimerization of nitrile groups contained on groups pendant from the poly... | 10/14/2008 |
| 7416845 | pH dependent ion exchange material, solid substrate having the material immobilized on its surface, and method of isolating a nucleic acid using the material or the solid substrate Provided are a pH dependent ion exchange material having a carboxyl group, an amino group, and a polyethylene oxide moiety, which is used for isolating a nucleic acid, a solid substrate having the material immobilized on its surface, and a method of isolating a nucl... | 08/26/2008 |
| 7351775 | Ion conductive membrane made from a block copolymer and methods of making a block copolymer A block copolymer for use as a solid polymer electrolyte, said block copolymer having at least first and second segments, the first segments being hydrophilic segments provided with acidic substituents for proton transport and the second segments being hydrophobic s... | 04/01/2008 |
| 7339008 | Membranes for selective gas separation The present invention relates to the use of a hydrophilic, biocompatible and biodegradable elastomer membrane or film for the selective separation of a gas mixture. Accordingly, processes for selective gas separation of a gas mixture are provided in which a gas mixt... | 03/04/2008 |
| 7323109 | Composition comprising metal-ion sequestrant This invention relates to a composition of matter comprising a functionalized mordant polymer comprising a cationic polymer having an adsorbed metal-ion sequestrant, wherein the metal-ion sequestrant has a stability constant greater than 1010 with iron (I... | 01/29/2008 |
| 7320754 | Method of preparing multi-modal anion-exchange ligands The invention relates to a method of preparing multi-modal anion-exchange ligands, which comprises providing a cyclic three-functional scaffold comprising an amine, a carbonyl and a thiol; optionally derivatisation of the amine of the scaffold to provide an anion-ex... | 01/22/2008 |
| 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 macroporous copolymer with a solution containing a polyunsaturated monomer, a m... | 11/13/2007 |
| 7282153 | Method for removal of arsenic from water A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Ksp no greater than 10−5, provided that the metal is not ... | 10/16/2007 |
| 7279080 | Gas sensors This invention provides an assembly comprising a sensing electrode and a counter electrode in contact with a membrane body formed from a solid polymer electrolyte system comprising a fluorinated polymer matrix and a charge carrying component which is dispersed in th... | 10/09/2007 |
| 7265159 | Monodisperse anion exchangers Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use. ... | 09/04/2007 |
| 7241272 | Method and composition for removing uremic toxins in dialysis processes Methods and devices for providing dialysis treatment are provided. The device includes a resin bed including zirconium phosphate, zirconium oxide, and urease. ... | 07/10/2007 |
| 7232520 | Ion exchange porous resins for solid phase extraction and chromatography Embodiments of the present invention are directed to porous resins for solid phase extractions. The resins feature at least one hydrophobic component, at least one hydrophilic component and at least one ion exchange functional group. The resins exhibit superior wett... | 06/19/2007 |
| 7169822 | Polymeric actuator A polymeric actuator of simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement. The polymeric actuator includes an ion-exchange resin product and metal electrodes. The ion-exchange resin product co... | 01/30/2007 |
| 7098252 | Preparation of macroreticular polymers The present invention relates to a method of preparing porous macroreticular polymers comprising polymerizing one or more monoethylenically unsaturated monomers in the presence of a silicone based porogen. ... | 08/29/2006 |
| 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 formed from a monomer having formula: [T—SO2Y—SO2 | 08/22/2006 |
| 7087654 | Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention b... | 08/08/2006 |
| 7081484 | Anion exchange membrane, process for its production and solution treating apparatus An anion exchange membrane comprising a resin phase which contains from 20 to 96 mass % of a polymer having repeating units represented by the following formula (1): wherein A is a C3-8 alkylene group ... | 07/25/2006 |
| 7077964 | Process for preparing monodisperse ion exchangers having chelating functional The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkal... | 07/18/2006 |
| 7077968 | Method for continuously filtering raw brine for use in chlor-alkali electrolysis The method of continuously processing raw brine with a solids content to obtain substantially solids-free pure brine (E) for use in chlor-alkali electrolysis. In this method the raw brine (A) is separated, by means of a decanter (1), into a clear brine (B) wi... | 07/18/2006 |
| 7078013 | Pretargeting methods and compounds Methods, compounds, compositions and kits that relate to pretargeted delivery of diagnostic and therapeutic agents are disclosed. In particular, methods for radiometal labeling of biotin and for improved radiohalogenation of biotin, as well as related compounds, are... | 07/18/2006 |
| 7067059 | Generation of ion exchanger media The present invention relates to a method of generating a separation medium comprising mixed mode cation-exchanger ligands coupled to a base matrix, which method comprises to provide a scaffold comprising a functional group and exhibiting a cyclic core structure; de... | 06/27/2006 |
| 7056935 | Rotamase enzyme activity inhibitors This invention relates to methods of using neurotrophic compounds having an affinity for FKBP-type immunophilins to stimulate or promote neuronal growth or regeneration and to prevent neuronal degeneration. ... | 06/06/2006 |
| 7053129 | Process for preparing monodisperse anion exchangers The present invention relates to a process for preparing novel, monodisperse anion exchangers by (a) reacting monomer droplets made from monovinylaromatic compounds and polyvinylaromatic compounds, and optional porogens and/or initiators, (... | 05/30/2006 |
| 7048857 | Method and apparatus for metal removal ion exchange The present invention provides a method for selectively removing metal ions of interest from a solution (12), such as the wastewater from a chemical mechanical polishing process. The method comprises contacting a solution (12) containing solid particle... | 05/23/2006 |
| 6972344 | Method of producing pure 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane A method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane comprising: crystallizing a phenol adduct of 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane from a solution comprising 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane and phenol; w... | 12/06/2005 |
| 6955922 | Large capacity acid or base generator and method of use Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a base generatio... | 10/18/2005 |
| 6946088 | Thermosetting coating mass The invention relates to a thermosetting coating mass, comprising a carboxyl functional polyester, and/or a carboxyl functional polyacrylate, a β-hydroxyalkylamide, in which a portion of the hydroxyl groups are chemically blocked and/or fillers and/or heat stabilis... | 09/20/2005 |
| 6942805 | Sugar juice decolorization by means of mondisperse anion exchangers The present invention relates to a process for decolorizing sugar juices by means of monodisperse ion exchangers, preferably anion exchangers, and the use of the same for sugar juice decolorization. ... | 09/13/2005 |
| 6939978 | Production of taxol and taxanes A high yield, economical process for purifying taxanes from yew biomass is disclosed. The process does not require initial liquid:liquid portioning of the crude extract to separate highly polar substances. The organic solvent extract of the biomass is adsorbed onto ... | 09/06/2005 |
| 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 for immobilizing and derivatizing functionalized boronic acids for use ... | 07/19/2005 |
| 6911483 | Ion exchangers The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C2-C4) alkylated and cross-linked regenerated cellulose, in which the level of derivitization with the QA-groups is 1.4 milli-eq... | 06/28/2005 |
| 6903082 | Methods of treating inflammatory conditions of the gastrointestinal tract using 4-APAA and compositions thereof Compounds are disclosed having the structure of Formula I: where R1, R3, and R4 are independently hydrogen or C1 to C4 alkyl, and R2 is: | 06/07/2005 |
| 6881761 | Porous polymer particle, anion exchanger, producing method thereof, column for ion chromatography, and method for measuring anions Disclosed are (1) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, (2) an alkali-resistant, high-strength porous polymer particle having ester bonds... | 04/19/2005 |
| 6864314 | Block polymers, compositions and methods of use for foams, laundry detergents, shower rinses and coagulants The present invention relates to a block polymeric material. Typically the block polymer comprises units capable of having an average cationic charge density of about 15 or less, preferably 5 or less, more preferably from about 0.05 to about 5, even more preferably ... | 03/08/2005 |
| 6844371 | Material having separating function An object of the present invention is to provide a separation functional material having more excellent adsorptive separation performance than previously. In order to attain this object, separation functional materials of the present invention are characterized in t... | 01/18/2005 |
| 6841285 | Impregnation of ion-exchange membranes to improve electrochemical fuel cell performance The electrochemical performance of an ion-exchange membrane in a fuel cell system may be improved by impregnating therein a perfluoroamine. The amine may be primary, secondary or tertiary. Further, the amine is preferably water insoluble or only slightly water solub... | 01/11/2005 |
| 6825386 | Catalyst for bisphenol compound production and process for producing bisphenol compound with the catalyst Provided are a catalyst of high activity and good heavy substance resistance and alcohol resistance for production of bisphenols, and a method for producing bisphenols with the catalyst. The catalyst is a sulfonic acid-type cation-exchange resin modified with (a) a ... | 11/30/2004 |
| 6759442 | Packing material for solid phase extraction and solid phase extraction method An object of the present invention is to provide a packing material for solid phase extraction, ensuring excellent recovery of not only a hydrophobic substance but also an ionic substance by having hydrophobicity and an ion exchange group at the same time, and a sol... | 07/06/2004 |
