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7625955 |
Porous polymeric article
A porous article which is formed from a polymeric material, in which characteristics of the surface of the article provided by the polymeric material are modified by having grafted to it chains of...
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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...
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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...
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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...
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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;...
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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.
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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...
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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...
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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...
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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 C 3-8 ...
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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...
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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...
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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...
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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...
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6911483 |
Ion exchangers
The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C 2 -C 4 ) alkylated and cross-linked regenerated cellulose, in which the level...
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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...
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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...
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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,...
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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...
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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...
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6740684 |
Process for producing a strong-acid cation exchange resin
A strong-acid cation exchange resin in acid form is contacted with an alkylcarhamoyl alkylthioester in the presence of water for producing a strong-acid cation exchange resin comprising a plurality...
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6723758 |
Graft polymeric membranes and ion-exchange membranes formed therefrom
Graft polymeric membranes and methods for making graft polymeric membranes have one or more trifluorovinyl aromatic monomers that are radiation graft polymerized to a polymeric base film. The...
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6696385 |
Method of preserving sulfonic acid-type cation-exchange resin modified with thiol-containing amine compound
The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a...
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6667349 |
Method for producing osmotically and mechanically stable gel-like anion exchangers
The present invention relates to a process for preparing gel-like anion exchangers by aminating crosslinked gel-like styrene divinybenzene bead polymers that contain halogenoalkyl groups in the...
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6632848 |
Heterogeneous anion exchanger
A heterogeneous anion exchanger comprising from 35 to 85 mass % of an anion exchange resin and from 15 to 65 mass % of a binder polymer, wherein the anion exchange resin is made of a polymer having...
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6627667 |
Process for preparing a modified polymer
The invention is directed to a process for modifying a water soluble polymer, said process comprising modifying a polymer containing amine groups, by reacting at least one of said amine groups...
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6610753 |
Process for preparing selective ion exchangers
The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and...
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6582811 |
Method of and material for purification of physical liquids of organism, and method of producing the material
A method of purification of physiological liquids of organism has the step of passing a physiological liquid through a material which has a size, a shape, and a structure selected so as to remove...
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6569910 |
Ion exchange resins and methods of making the same
Ion exchange resin granules containing a crosslinked polymerized α,β-unsaturated acid, like acrylic acid, or a vinyl monomer containing an amino group, like polyvinylamine, and methods of...
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6534554 |
Multicomponent ion exchange resins
Multicomponent ion exchange resin granules containing at least one acidic resin and at least one basic resin. Each granule contains at least one microdomain of the acidic resin in contact with, or...
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6509383 |
Methods and compositions for screening cloned proteins
The present invention provides a metal charged iminodiacetic acid (IDA) cellulose for detecting a test sample having a histidine tag. The present invention also provides methods for determining...
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6465580 |
Functional polymers with carbon-linked functional groups
A functional polymer having active and stable functional groups, for separation or reactive processes in chemical manufacture or analysis, has carbon-linked functional groups on dimethylene...
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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...
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6437012 |
Low-swelling, macroporous polymer-supported reagents for organic synthesis and purification
A low-swelling, highly crosslinked, macroporous polystyrene resin containing functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction...
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6432314 |
Anion exchange materials and processes
Anion exchange material surfaces are provided with zwitterionic and cationic groups, preferably by coating with a polymer formed from monomers including a zwitterionic monomer, a cationic monomer...
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6410656 |
Cation exchangers or chelating agents and process for the preparation thereof
A cation exchanger or a chelating agent having at least structural units represented by the following formula (I), the structural units being derived from a crosslinkable monomer containing an...
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6329435 |
Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds
The present invention relates to a process for preparing novel, monodisperse crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds, in particular heavy metal...
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6306488 |
Composite rigid sponge structure
A composite porous structure includes a macroporous open-pore sponge of regenerated cellulose having disposed within the pores a microporous polyvinyl chloride (PVC) substrate. The total empty...
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6303702 |
Method of producing material for purification of physiological liquids of organism
Disclosed is a method for producing material for purification of physiological liquids of organism. A material has a size, shape and structure selected so as to remove toxic compounds in the...
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6248798 |
Anion-exchange resins including ion-exchange groups with at least two nitrogen groups, and methods of making and using same
Anion-exchange compositions are provided comprising anion-exchange functional groups comprising at least a first and a second nitrogen group, wherein the first nitrogen group is a quaternary amine...
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6143849 |
Synthesis of acrylate and alkyl acrylate monomers and polymers of chelators
Multifunctional chelating groups are covalently bound to acrylate or methylate monomers. These monomers are polymerized. The resulting polymers are highly substituted with chelating groups and are...
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6140543 |
Process for the production of 1,3-propanediol
A process for the production of 1,3-propanediol by hydrating acrolein in the presence of an ion exchanger to form 3-hydroxypropionaldehyde includes reacting acrolein and water in a ratio by weight...
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6136424 |
Method of and material for purification of physiological liquids of organism, and method of producing the material
A method of purification of physiological liquids of organism has the step of passing a physiological liquid through a material which has a size, a shape, and a structure selected so as to remove...
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6059975 |
Bifunctional anion-exchange resins with improved selectivity and exchange kinetics
Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent...
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6028120 |
Chelated polyhydroxstyrene for removing metal ions from aqueous and nonaqueous systems
A process for producing a deionizing resin, which comprises reacting an organic compound having at least one reactive hydroxy group and at least one active chelating site with an organic polymer...
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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...
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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...
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5985942 |
α, β, β-trifluorostyrene-based composite membranes
A composite membrane is provided in which a porous substrate is impregnated with a polymeric composition comprising various combinations of α,β,β-trifluorostyrene, substituted...
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5980987 |
Method of making a composition for separating and concentrating certain ions from mixed ion solutions
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...
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5973080 |
Process for the preparation of resins with a primary amine or guanidine function, and resins thus obtained
The process includes the reaction of a chloro-formamidinium chloride with a polystyrene-divinylbenzene resin functionalized with primary amine groups. The resins which can be obtained according to...
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