Abstract: Strongly acidic cation exchangers with high mechanical, osmotic and oxidation stability can be prepared by sulfonating bead polymers formed from one or more vinylaromatic monomer(s), one or more crosslinker(s) and from 0.2 to 20% by weight of one or more vinyl ethers and/or vinyl esters.

Abstract: A membrane-electrode assembly for polymer electrolyte fuel cells which is excellent in water repellency and gas diffusivity and which exhibits a high output power density, can be obtained by using, as an electrolyte material for polymer electrolyte fuel cells, a fluoropolymer obtained by contacting a fluoropolymer which is excellent in gas diffusivity and which has alicyclic structures in its main chain and further has sulfonic acid groups, with fluorine gas for fluorination to increase water repellency and stabilize the molecule ends.

Abstract: The present invention relates to a poly(arylene ether) copolymer having a cation exchange group, a method for manufacturing the same, and use thereof. The poly(arylene ether) copolymer having the cation exchange group according to the present invention has excellent physical characteristics, ion exchanging capacity, metal ion adsorption capacity and a processability, and thus can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.

Abstract: Provided herein are biocidic compositions including an ion exchange material, wherein when said material is in an environment capable of transporting H+, said ion exchange material is adapted to cause the death of at least one cell within or in contact with said environment. A selectively permeable barrier layer may be provided covering the ion exchange material. Also provided herein are methods of making the foregoing biocidic compositions. In addition, provided herein are methods of using the foregoing biocidic compositions to cause the death of at least one cell.

Abstract: A polymer electrolyte satisfying both of proton conductivity and chemical stability such as water resistance at a high level that is preferable as the polymer electrolyte for fuel cells and the like is provided. The invention includes a block copolymer comprising one or more segments having an ion exchange group and one or more segments having substantially no ion exchange group, wherein at least one of the segments having an ion exchange groupis the segment represented by the following general formula (1A), (1B) or (1C): and the segment has ion exchange group density of 4.

Abstract: A membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment is provided. According to the membrane-electrode assembly for solid polymer electrolyte fuel cell in which a polyarylene-based copolymer having a specific repeating constitutional unit is used as a proton conductive membrane, the membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment can be provided.

Abstract: A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound.

Abstract: A composition and method useful in promoting healing of a bleeding wound site. The composition preferably includes a substantially anhydrous acid form of a cation exchange resin, which when applied over blood, provides an antimicrobial against planktonic microorganisms and biofilms in the wound. The resin is also capable, when applied in sufficient quantities, of providing a continuing and persistent antimicrobial against planktonic microorganisms and biofilms through dehydration and ion exchange with cations present in the blood and other body fluids. When the resin has a concentration of at least 26 mg/ml, it provides a >3 log reduction in biological activity of MRSA, MRSE and Pseudomonas aeruginosa.

Abstract: A branched polymer represented by formula (I): wherein at least one of L1, L2, L3, and L4 is a univalent organic group represented by formula (II): wherein L5, L6 and L7 are independently hydrogen or a univalent organic group, D1, D2 and D3 being independently a single bond or a divalent group, at least one of D1, D2, and D3 containing in which R1 is hydrogen or a methyl group and n is an integer ranging from 1 to 1000; and the remainder of L1, L2, L3, and L4 being independently hydrogen or a univalent organic group represented by formula (III): wherein R is a univalent end group, with the proviso that, when one of the remainder is hydrogen, the others of the remainder cannot be hydrogen.

Abstract: The present invention relates to a method for isolating proteins from a solution containing the proteins. The invention also relates to a method for the chromatographic separation of proteins. The present invention also relates to crosslinked hydroxylic polymer particles functionalized with temperature-responsive copolymer, and to methods of preparing such particles.

Abstract: A method of making a durable fuel cell polymer electrolyte membrane is provided comprising the steps of: a) providing a polymer electrolyte membrane; b) providing a solution of a salt selected from the group consisting of manganese salts and cerium salts or a suspension of particles of a compound selected from the group consisting of manganese oxides and cerium oxides; and c) applying the solution or suspension to the polymer electrolyte membrane by a method selected from the group consisting of brushing, spraying and use of a slot die. Some embodiments comprise metered application of the solution to the polymer electrolyte membrane.

Abstract: The present invention concerns shape memory materials comprising polyelectrolyte segments. These segments can be used for fixing a permanent shape and/or such segments can also be employed as switching segments responsible for the fixation and release of the temporary shape.

Abstract: Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.

Abstract: To provide a separating agent for IgG purification, whereby IgG can be separated and purified efficiently at a high purity, and a method for purifying an IgG using it. A separating agent for IgG purification, characterized in that a polyacrylic acid and/or a polymethacrylic acid is immobilized on a carrier, and a method for purifying an IgG monomer, characterized in that a mixture containing an IgG monomer and an impurity containing polymeric IgG is contacted to the separating agent and eluted.

Abstract: Polymer electrolytes offer increased safety and stability as compared to liquid electrolytes, yet there are a number of new challenges that polymer electrolytes introduce. A novel polymer electrolyte, as disclosed herein, is an ionically-conductive polymer with a backbone that is both highly flexible and highly conductive with high conductivity pendant chains attached, thus increasing the concentration of lithium coordination sites and improving ionic conductivity. Previous strategies for comb-type conductive polymers have focused on attaching either conductive pendant chains to a flexible non-conductive backbone or conductive pendant groups to a marginally flexible conductive backbone.

Abstract: The polymer electrolyte membrane according to the present invention comprises a polymer electrolyte having ion-exchange groups, wherein Sp and Snp satisfy a relationship expressed by the following expression (I): Sp/Snp?0.42??(I) where Sp represents the total of peak areas obtained by measurement of a 13C-solid state nuclear magnetic resonance spectrum of the polymer electrolyte membrane, the polymer electrolyte membrane having been subjected to a first immersion treatment comprising immersing the polymer electrolyte membrane in 5 mmol/L iron (II) chloride tetrahydrate aqueous solution at 25° C. for 1 hour, and thereafter drying the polymer electrolyte membrane at 25° C.

Abstract: Disclosed herein are polymer compounds and a method for preparing thereof. More specifically, provided are polymer compounds with well-connected, narrow size distribution free-volume element and a method for preparing the polymer compounds by thermal rearrangement for aromatic polyimides containing ortho-positioned functional groups in the solid state.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

Abstract: An electrolyte membrane includes a nanocomposite ion complex that is a reaction product of a nanocomposite with a basic polymer. The nanocomposite includes a polymer having a sulfonic acid group and an unmodified clay. Either the unmodified clay has a layered structure and is dispersed in the polymer having the sulfonic acid group, and the polymer is intercalated between layers of the clay or the unmodified clay has an exfoliated structure and the exfoliated layers of the unmodified clay are dispersed in the polymer. The electrolyte membrane shows high mechanical strength, high ionic conductivity, and excellent methanol crossover impeding properties even when the degree of sulfonation of the polymer having the sulfonic acid group is high. When a methanol aqueous solution is used as a fuel, the fuel cell including the electrolyte membrane has a low methanol crossover, and thus, has a high operational efficiency and a long lifetime.

Abstract: Sulfonated polymers are made by the direct polymerization of a sulfonated monomer to form the sulfonated polymers. The types of sulfonated polymers may include polysulfones or polyimides. The sulfonated polymers can be formed into membranes that may be used in proton exchange membrane fuel cells or as ion exchange membranes. The membranes formed from the sulfonated polymers exhibit improved properties over that of Nafion®. A heteropoly acid may be added to the sulfonated polymer to form a nanocomposite membrane in which the heteropoly acid is highly dispersed. The addition of a heteropoly acid to the sulfonated polymer increases the thermal stability of the membrane, enhances the conductivity above 100° C., and reduces the water uptake of the membrane.

Abstract: A novel anion exchange polymer is provided. A method of making the anion exchange polymer includes reacting a tertiary amine, an acid inhibitor and a polyepoxide to form a quaternary ammonium monomer and polymerizing the quaternary ammonium monomer in the presence of a catalyst. The exchange polymer is prepared without using alkyl halides and can be used to make improved ion exchange materials that are chemically resistant and non-fouling.

Abstract: A bismuth compound, useful as an inorganic anion exchanger used for an encapsulating material for, e.g., semiconductors, has a peak intensity of 900 to 2000 cps at 2?=27.9° to 28.1° and a peak intensity of 100 to 800 cps at 2?=8.45° to 8.55° in a powder X-ray diffraction pattern, and is represented by the following formula (1): Bi(OH)x(NO3)y.nH2O??(1) wherein x is a positive number not less than 2.5 and less than 3, y is a positive number not more than 0.5, x+y=3, and n is 0 or a positive number.

Abstract: Highly fluorinated ion-exchange polymers achieve dissolution in aqueous tetrahydrofuran at lower pressures and temperatures than in other solvents, with few or no side products being formed.

Abstract: A proton conductive polymer electrolyte includes an acidic functional group-containing aromatic hydrocarbon polymer and an electron donor functional group-containing compound. When used in a fuel cell, the proton conductive polymer electrolyte provides a long-term stable power generating performance at an operating temperature from 100° C. to 200° C. in non-humidified conditions or a relative humidity of 50% or less.

Abstract: The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described.

Abstract: The present invention provides a new design for high capacity stationary phases for chromatography, for example, ion chromatography. The stationary phases include a first polymer layer in contact with and at least partially coating the substrate of the stationary phase. The first polymer layer serves as a foundation for the attachment, and in various embodiments, the growth and attachment, of a highly hyperbranched polymer structure, typically based on one or more products of condensation polymerization. Multiple components are of use in forming the first polymer layer and the hyperbranched polymer structure, thereby providing a stationary phase that can be engineered to have a desired property such as ion capacity, ion selectivity, and the like. Exemplary condensation polymers are formed by the reaction of at least one polyfunctional compound with at least one compound of complimentary reactivity, e.g., a nucleophilic polyfunctional compound reacting with an electrophilic compound.

Abstract: A fuel cell membrane is described comprising at least one sulfonated aromatic polyether copolymer comprising a poly-arylen-ether-ketone (PEK) moiety or sulfonated derivatives thereof, deriving from spiro-bis-indane or 4,4?-(hexafluoroisopropylidene)diphenol (BPAF), and an arylene-sulfone, or an arylene-ketone or sulfonated derivative thereof; said copolymer having the following formula (1): wherein Ar1 has formula, wherein X is spiro-bis-indanile (SBI) (b) or BPAF (c) having formulas: and wherein Y is H or SO3H, and Ar2 has formula wherein W is CO or SO2, and Y is H or SO3H, wherein Z is OH or Cl; and wherein at least one between Ar1 or Ar2 comprise at least one sulfonic group; and wherein n is an integer comprised between 2 and 50. A method for the production of such membrane is also described.

Abstract: A subject for the invention is to provide a charge-transporting polymer having high hole-transporting ability and excellent solubility and film-forming properties and a composition for organic electroluminescent element which contains the charge-transporting polymer. Another subject for the invention is to provide an organic electroluminescent element which has a high current efficiency and high driving stability. The charge-transporting polymer comprises a group represented by the following formula (1) as a side chain: wherein in formula (1), the benzocyclobutene ring may have one or more substituents. The substituents may be bonded to each other to form a ring. The spacer represents a group which links the benzocyclobutene ring to the main chain of the charge-transporting polymer through three or more single bonds.

Abstract: An ion exchangeable mixture containing a polymeric compound consisting of an ion exchange resin, an acrylamide mixture containing at least one bisacrylamide and at least one acrylamide, and a copolymer obtained by reacting the polymeric compound with the acrylamide mixture, and a method of producing the same are provided. The ion exchangeable membrane produced by using the ion exchangeable mixture has significantly smaller electric resistance than conventional ion exchangeable membranes, and has excellent selective permeability because the ion exchangeable membrane is electrically charged. The ion exchangeable membrane can be produced under very mild production conditions, and thus can be produced very easily. Furthermore, the ion exchangeable membrane can be also formed into film during a crosslinking reaction in a solvent of water, and thus is advantageous in that the ion exchangeable membrane can be freely produced into desired sizes, shapes and forms.

Abstract: Block copolymer that can be formed into an ion—Conductive membrane are provided. The block copolymer of the invention includes a first polymer block and a second polymer block attached to the first polymer block. The second polymer block has a main polymer chain and one or more side chains extending from the main polymer chain. The one or more side chains include at least one substitutent for proton transfer. Block copolymers utilizing phosphoric acid groups are also provided.

Abstract: 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 independently is hydrogen, alkyl or aryl, R3 at each occurrence independently is hydrogen or alkyl or two vicinal groups R3 together form an aromatic ring, m is 1, 2, 3, 4, 5 or 6, n is 1, 2, 3 or 4, o is 1 or 2, and p is 1, 2 or 3, is useful in the production of bisphenols.

Abstract: The present invention provides a novel polymer composed of polyarylene in the main chain and having oxocarbon groups which is particularly useful in battery and fuel cell applications.

Abstract: A polymer blend useful as an ion conductor in fuel cells includes a first polymer that includes a non-ionic segment and a second polymer that includes a sulfonic acid group.

Abstract: The present invention provides a polymer electrolyte membrane with excellent proton conductivity in its thickness direction. Preferably, the polymer electrolyte membrane containing a polymer compound comprising an ionic segment having an ionic functional group and a nonionic segment having substantially no ionic functional group, and the phase containing ionic segments as a main component and the phase containing nonionic segments as a main component are phase-separated, and in the surface region thereof, the change in the amount of the ionic segment from the surface toward the interior substantially decreases monotonically.

Abstract: There is provided a modified ion exchange resin catalyst which exhibits higher bisphenols selectivity than the conventional modified ion exchange resins in processes wherein bisphenols are produced by reacting a phenolic compound with ketones, and to provide such a process for producing bisphenols.

Abstract: A process for making an aqueous dispersion of fluorinated ionomer particles by providing dispersed particulate of fluorinated ionomer in an aqueous polymerization medium and polymerizing at least one fluorinated monomer having an ionic group in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluorinated ionomer.

Abstract: This invention relates to novel chemical resistant, film forming, and moisture vapor permeable ionomers, including specialized polyurethane ionomers, polyurea ionomers, polyamide ionomers, polyester ionomers, or a mixture of the said ionomers, having high content of covalent-bonded ionic groups, total >100 milli-equivalents per 100 gram of ionomers. These specialized ionomers have low noxious chemical crossover rate, high moisture vapor transmission rate, hydrolytically stable in humid environment, and capable of forming thin films.

Abstract: The present invention relates to a sulfonated poly(arylene ether) copolymer, a manufacturing method thereof and a polymer electrolyte membrane for fuel cell using the same.

Abstract: A polymer electrolyte having a repetitive structure represented by the following formula (1): wherein B represents a single bond or a bivalent group, A represents a bivalent aromatic group, Y represents —SO2—, —SO— or —CO—, R1 represents a substituent, n1 represents an integer of from 0 to 3, L represents a perfluoroalkylene group, and M represents an ionic group.

Abstract: Improved polymer-based materials are described, for example for use as an electrode binder in a fuel cell. A fuel cell according to an example of the present invention comprises a first electrode including a catalyst and an electrode binder, a second electrode, and an electrolyte located between the first electrode and the second electrode. The electrolyte may be a proton-exchange membrane (PEM). The electrode binder includes one or more polymers, such as a polyphosphazene.

Abstract: An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time.

Abstract: A hydrophilic polymeric ionomer obtainable by reacting, in a solvent, components comprising a polymer and an ionic component selected from a strong acid or a strong base. The present invention also comprises methods of forming such membranes.

Abstract: Disclosed are sulfonated polymers of formula (I) or a salt thereof: wherein X is (a) or (b), R is hydrogen or an organic moiety, n is an integer from 10 to 10,000, p is 1 or 2, and m is 0 or 1 for a particular monomer unit such that the polymer has a degree of sulfonation of 0.50 or greater. Such polymers are useful in proton exchange membranes (PEMs) having high ion exchange capacity with higher proton conductivity than Nafion™, while having lower methanol permeability and lower water uptake than previously disclosed polymers.

Abstract: The present invention discloses a fabrication method of a basic polymer electrolyte film of blended polyvinyl alcohol and quaternary amine, wherein hydrophilic polyvinyl alcohol and quaternary amine are separately dissolved in a polar organic solvent, and then, the solutions are blended to obtain a glutinous polymeric solution; the glutinous polymeric solution is baked to form a film, and then, the film is soaked in an alkali hydroxide solution to obtain a basic electrolyte-containing solid-state polymer electrolyte film. The basic polymer electrolyte film of the present invention has the characteristics of superior chemical stability, high mechanical strength and high ionic conductivity. When the present invention applies to a zinc-air battery, the utilization rate of zinc is promoted. The basic polymer electrolyte film of the present invention can be widely used in various energy storage systems, such as alkaline battery systems, alkaline fuel cells and capacitors.

Abstract: In the present invention, a material having a structure represented by formula (1) or (2) (wherein W equals N or C) is used as a solid electrolyte for a fuel cell. An electrolyte membrane having a small fuel crossover and a fuel cell having excellent ion conductivity and service capacity are obtained.

Abstract: The present invention provides a polymer electrolyte, a crosslinked polymer electrolyte, a polymer electrolyte membrane and use of the same. The polymer electrolyte has a repeating unit represented by the following formula (1) in its molecule and an ion-exchange group in the molecule: wherein Ar represents an optionally substituted aromatic group; R1 represents a hydrogen atom or an organic group; X represents a direct bond or a divalent group; n represents an integer of 1 to 3; and when n is 2 or more, the plurality of R1's may be the same as or different from each other.

Abstract: The invention relates to the use of a material imparting proton conductivity in the production of fuel cells, said material consisting of monomer units and having an irregular shape.

Abstract: A composition having a sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A, at least one polymer interior block B, and at least one polymer block D. Each A block is a segment of one or more polymerized para-substituted styrene monomers, each B block contains segments of one or more vinyl aromatic monomers selected from polymerized (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof, and each D block having a glass transition temperature of less than 20° C. and a number average molecular weight of between 1,000 and 50,000 Adhesives, coatings and membranes are formed from the composition. Various articles are formed with the composition including films, fibers, fabrics, laminates, and absorbent cores.

Abstract: To provide an electrolyte material for polymer electrolyte fuel cells having a high softening temperature and being excellent in durability, and an electrolyte membrane and a process for producing a membrane-electrode assembly using it. An electrolyte material made of a polymer containing a segment A of a polymer containing repeating units based on a perfluoromonomer having an ion exchange group and having a polymerizable double bond, at least one of carbon atoms in the polymerizable double bond being a carbon atom contained in an alicyclic structure, and a segment B of a fluoropolymer containing substantially no ion exchange group, and an electrolyte membrane and a membrane-electrode assembly using it.

Abstract: An aromatic-polyether-type ion conductive polymer membrane having improved mechanical strength is provided. An aromatic-polyether-type ion-conductive ultrahigh molecular weight polymer having an ion exchange capacity of 0.1 meq/g or higher and a structure comprising an aromatic-polyether-type ultrahigh molecular weight polymer in which an acid group introduced, said aromatic-polyether-type ultrahigh molecular weight polymer having at least one structural unit selected from those represented by the following formulas (1) and (2) and the sum of the number a of the structural unit of the formula (1) and the number b of the structural unit of the formula (2) being 2 or larger: Ar1—Om—Ar1??(1) Ar2—On—Ar2??(2).