Abstract: A ternary block copolymer and a method for manufacturing it. The copolymer has a molecular structure consisting of a macro-molecule having a cation exchange group, a macro-molecule having an anion exchange group and another macro-molecule which does not have any ion exchange group. These macro-molecules are linked together into a straight chain.

Abstract: An amphoteric ion-permeable composite membrane composed of a microporous substrate, and supported on the substrate, a thin amphoteric ion-exchange film formed of an active amino group-containing polymer which has been interfacially crosslinked at least at the surface portion of the thin film, said membrane being produced by forming a thin layer comprising an active amino group-containing polymer containing 1.0 to 23 milliequivalents/g, as amino equivalent, of an active amino group selected from primary and secondary amino groups and 0 to 18 milliequivalents/g, as amino equivalent, of a tertiary amino group and/or an ammonium salt group per molecule with the total amino content thereof being in the range of 2.

Abstract: A porous cross-linked copolymer of chloromethylstyrene and divinylbenzene having a divinylbenzene unit represented by Xm of from about 9.0 percent by mole to about 17.0 percent by mole based on the total moles of monomer units; a content of active chlorine atom of from about 5.25-0.08 Xm mmole/g-dry resin to about 6.43-0.10 Xm mmole/g-dry resin; a water regain of from about 0.10 ml/g-dry resin to about 1.20 ml/g-dry resin; and a total volume of micro pores having a diameter of from about 500 angstroms to about 3000 angstroms of from 0.10 ml/g-dry resin to about 1.20 ml/g-dry resin; and a porous iminodiacetic acid type chelating resin having a Xm of from about 9.0 percent by mole to about 17.0 percent by mole based on the total moles of all monomer units; an ion exchange capacity of from about 5.35-12.0 Xm/(205.6-1.30 Xm) meq/g-dry resin to about 7.93-18.1 Xm/(247.1-2.0 Xm) meq/g-dry resin; a water regain of from about 0.60 ml/g-dry resin to about 2.

Abstract: A process is provided wherein a fibrous ion exchange cellulose composite is prepared by agglomerating a hydrophobic polymer and fibrous cellulose and then derivatizing the cellulose to impart ion exchange properties thereto. The process is an improvement over the prior art processes wherein the composite is prepared by agglomerating the polymer with fibrous cellulose which has been converted to ion exchange cellulose prior to agglomeration.

Abstract: There are provided a palatable anthelmintic resinate composition having improved storage and handling characteristics comprising from 2% to 5% of a resinate N,N-dialkylpiperazine carboxamide, from 0% to 7% of a resinated styryl pyridinium compound, from 18% to 60% of dessicated liver, from 20 to 47% of dry whey, and from 1% to 10% of polyvinylpyriolidone, carboxypolymethylene or mixtures thereof, said percentages being all by weight, and a method for preparing the same.

Abstract: A sulfonated polystyrene ion-exchange resin is provided having organo mercaptan groups attached to backbone sulfone radicals by covalent nitrogen-sulfur linkages. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.

Abstract: Composition which has a prolonged broncholytic and tocolytic activity and consists of a compound of N,N'-bis-[2-(3',4'-dihydroxyphenyl)-2-hydroxyethyl]-hexamethylenediamine with a polystyrene which is crosslinked with divinylbenzene, contains sulphonic acid radicals as anchor groups and has a degree of crosslinking of 2-5%, and a process for the preparation of this composition by treating the proton form of the resin with an aqueous solution of a bis-salt of the base.

Abstract: A non-toxic anionic resin selected from resins having a polymeric reticulated skeleton of styrenic or acrylic type, inert to the digestive enzymes, having a molecular weight higher than 1000 and containing ionizable amino groups, resins having a cellulosic reticulated skeleton modified by the introduction of free or substituted amino groups and resins having a polysaccharide reticulated skeleton modified by the introduction of free or substituted amino groups. The resin is capable of binding itself permanently to the biliary acids and is salified with an acid corresponding to the general formula: ##STR1## wherein: R' represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms,R represents a chlorine atom or a group selected from p-chlorobenzoyl, p-bromobenzoyl and p-fluorobenzoyl,W represents a group selected from OH, --N(R"')--CH(R")-(CH.sub.2).sub.n --COOH and O--CH.sub.

Abstract: Ion exchange materials are prepared by retaining a vinyl monomer solution within the interstices of a fiber structure, such as a woven or non-woven fabric, polymerizing these monomers in the presence of an organic solvent sparingly soluble or totally insoluble in water to form a macroreticular polymer, and functionalizing the macroreticular polymer with an ion exchange functional group.

Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.

Abstract: Novel heterogeneous catalysts consist essentially of an anion exchange resin to which is bound ionically an anionic metal carbonyl species having the general formula M.sub.n (CO).sub.m (X).sub.p.sup.z- where M is a transition metal such as for example rhodium, cobalt, ruthenium, osmium, iridium, or iron; X is an anion, for example halide, hydride, or alkyl; n ranges from 1 to 12; m ranges from 1 to 34; p ranges from 0 to 2n+1; and z is an integer charge ranging from 1 to 5. The catalyst in which M is rhodium, m=2, p=2, n=1, and z=1 is highly effective for the carbonylation of alcohols to acids and esters. Many of these anionic species have utility in the hydroformylation of olefins.

Abstract: Process for preparing anion exchange resins comprising polymerizing a vinyl aromatic compound having at least one alkyl group containing about 1 to 3 carbon atoms, alone or mixed with a copolymerizable monomer, optionally in the presence of a mineral support, followed by brominating the alkyl groups of the resulting polymer by means of an N-bromoamide or an N-bromoimide, and then aminating the brominated product obtained. The resulting anion exchange resins are useful in the chemical, pharamaceutical, food, and metallurgical industries.

Abstract: A process is disclosed for quaternizing reactive substituent haloalkyl groups in hollow fiber polymer membranes wherein such haloalkyl groups are reacted with an amine quaternizing agent in the presence of an electrolyte compound and, preferably, in the presence of a cationic quaternary ammonium halide surfactant. In addition, there is disclosed a process of quaternizing the reactive haloalkyl groups in anisotropic hollow fiber polymer membranes by contacting and permeating a solution of an amine quaternizing agent from the surface of the membrane which is to be exposed to a dialysis feed solution.

Abstract: High density ion exchange resins are prepared from cross-linked, haloalkylated monovinylidene aromatic polymers which have been halogenated in the presence of a Friedel-Crafts catalyst. For example, a cross-linked chloromethylated polystyrene brominated in the presence of ferric chloride (FeCl.sub.3) may be subsequently aminated to form a high density anion exchange resin useful in thick process slurries such as those employed in uranium recovery.

Abstract: This invention relates to novel metal catalysts of a solid nonionic crosslinked resin having amine or phosphine borane adducts on or in which a reduced metal is precipitated, the method of producing said catalysts and their use in catalysis.

Abstract: This invention relates to novel metal catalysts of a solid nonionic crosslinked resin having amine or phosphine borane adducts on or in which a reduced metal is precipitated, the method of producing said catalysts and their use in catalysis.

Abstract: A basic copolymer whose main chain is cross-linked which comprises about 6 to about 98% by weight of recurring units of Formula (A) or (B), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represents a hydrogen atom or a hydrocarbon group selected from the group consisting of C.sub.1-20 alkyl groups, C.sub.3-10 cycloalkyl groups, C.sub.3-8 alkenyl groups, C.sub.6-15 aryl groups, C.sub.7-12 arylalkyl groups and C.sub.1-15 aminoalkyl groups; and X is an acid radical, and about 2 to about 94% by weight of cross-linked units based on the total weight of the recurring units of Formula (A) or (B) and the cross-linked units and, if desired, up to about 92% by weight of units of a monoethylenically unsaturated monomer or a conjugated monomer based on the total weight of the recurring units of Formula (A) or (B), the cross-linked units and the units of the monoethylenically unsaturated monomer or the conjugated monomer.

Abstract: Crosslinked basic polymers useful as weak base ion exchange resins are prepared by reaction, in the presence of an alkali, of a crosslinked aromatic polymer matrix which contains haloalkyl groups, with an oxy compound selected from: ##STR1## to provide a polymer predominating in repeating units of the formula: ##STR2## where R is the residue of said oxy compound, x, y and z are integers of from 1 to 3, R.sup.1, R.sup.3, and R.sup.4 independently are hydrogen or alkyl, and R.sup.2 and R.sup.5 are each alkylene.

Abstract: A sulfonated polystyrene ion-exchange resin is provided having organo mercaptan groups attached to backbone sulfone radicals by covalent nitrogen-sulfur linkages. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.

Abstract: A process for preparing a fluorine-containing polymer having carboxyl groups, which comprises subjecting a fluorine-containing polymer having sulfonyl halide groups bonded to it to an oxidation reaction at a temperature of not more than 250.degree. C.; and a process for electrolysis, using as a diaphragm a member of the polymer obtained by the above process.

Abstract: Process for treating anion exchange resins containing a major portion of weak-base groups in catalytically inactive salt form and a minor portion of strong-base groups in catalytically inactive salt form wherein the resin is contacted with an aqueous solution containing ammonium hydroxide and ammonium chloride.

Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.

Abstract: A chelate resin produced by reacting (A) a resin having one or more primary and/or secondary amino groups in the molecule with (B) a polyfunctional compound having at least two reactive groups with amine and (C) an amino compound having one or more primary and/or secondary amino groups, or with a reaction product of said (B) polyfunctional compound and said (C) amino compound, shows excellent heavy metal collecting ability without being influenced by other coexisting ions.

Abstract: Novel photographic processing compositions including a polymeric oxime viscosity-increasing reagent for processing an exposed film unit to provide a photographic image. While this photographic image may be in black-and-white or in color and prepared by any of the heretofore known systems, of particular interest are color diffusion transfer systems for preparing a color image viewable without separation of any of the components or layers of the photographic product. The invention also includes a novel class of polymeric oximes which may be employed in such compositions.

Abstract: Anion exchange resins produced by reacting a stabilized polychloromethylstyrene polymer bead with a polyamine containing at least two tertiary amine groups of which at least one is a terminal group, and processes for producing the resins in uniform sizes.

Abstract: A process for preparing a composite amphoteric ion exchange membrane, which comprises forming a thin membrane not exceeding 5 microns thick by applying to a surface of a microporous polymer substrate having a physical, selective permeability of its own, a coating consisting of a polymer having either a cation or anion exchange group and a functional group capable of receiving another ion exchange group having an opposite sign from the cation or anion exchange group or a mixture of two polymers one of which has either a cation or an anion exchange group and the other of which has a functional group capable of receiving an ion exchange group having an opposite sign from the cation or anion exchange group, and introducing the ion exchange group having an opposite sign to said functional group to provide a ratio of anion to cation exchange capacity in the range of from 0.5 to 2.0.

Abstract: Crosslinked basic polymers useful as anion exchange resins are prepared by reacting a crosslinked vinyl aromatic polymer containing haloalkyl groups with a methylquinoline compound in an alkaline medium.

Abstract: Hard, infusible, discrete beads of crosslinked copolymer are prepared by free-radical catalyzed polymerization of a monomer mixture in aqueous dispersion wherein a minor amount of a modifier, specifically an organic compound containing acetylenic or allylic unsaturation having the ability to moderate the rate of polymerization, is incorporated in the monomer mixture. Ion exchange resins having improved mechanical strength are obtained by attaching functional groups to the copolymer.

Abstract: This invention relates to a process for the preparation of high density resins by bromination of particles of crosslinked vinylaromatic copolymers of either the gel type or the ionic or non-ionic macroporous type. The invention is characterized in that crosslinked vinylaromatic polymer particles which have been swollen in a solvent are contacted with bromine or a bromine releasing agent in the presence of an oxidizing agent.

Abstract: A cross-linked polymer of a monovinylidene aromatic compound is diacylaminoalkylated by contacting said polymer with an aldehyde and a diacylamine in the presence of an acid catalyst. The resulting diacylaminoalkylated polymer is readily hydrolyzed to an aminoalkylated form which is useful as a weak base ion exchange resin and as a precursor in the preparation of other ion exchange resins. For example, reacting a cross-linked polystyrene with paraformaldehyde and phthalimide in the presence of sulfuric acid and subsequently hydrolyzing the reaction product forms a cross-linked poly(aminomethyl styrene) useful as a weak base ion exchange resin and as a precursor in the preparation of strong base or chelate type resins.

Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.

Abstract: A process of removing unsaturation from resins by reaction with diimine. Thermally regenerable ion exchange resins are prepared by the hydrogenation of unsaturated polymers containing unquaternized amino groups with diimine. Procedures for generating the reactive diimine intermediate from precursors such as hydrazine are described.

Abstract: Novel, macroreticular cross-linked anion exchange and adsorbent copolymers of at least one monovinylidene ring-containing nitrogen heterocyclic monomer are prepared. Preferred monovinylidene ring-containing heterocyclic monomers are the various vinylpyridines.

Abstract: Novel anion exchange resins containing a crosslinked aromatic backbone resin with sulfonamide functional ion exchange groups on the aromatic rings and a process for producing the same.

Abstract: High polymers containing methylquinoline groups are prepared by reacting a crosslinked high polymer having quaternary ammonium groups with a methylquinoline compound such as methylquinoline until all or a portion of said quaternary ammonium groups are reacted with said methylquinoline compound. The high polymers are useful as anion exchange resins having intermediate basicity.

Abstract: Crosslinked quaternary ammonium anion exchange resins having a copolymer backbone containing a major amount of units derived from at least one non-polar aromatic monovinyl monomer and a minor amount of units derived from at least one polar functionally substituted comonomer, and characterized by improved physical stability, are prepared by an improved process, wherein the improvement comprises haloalkylating the aromatic nuclei of the copolymer backbone and aminolyzing the intermediate copolymer in the absence of added organic solvent.

Abstract: An ion exchange resin having functional groups of the formula :- ##STR1## wherein :- A and B, independently of each other, represent groups forming together with the attached carbon and nitrogen atoms, an optionally substituted five or six membered heterocyclic ring which may embody a further heteroatom and wherein at least one of such heterocyclic rings is an aromatic ring; R* may be totally absent or it may represent an optionally substituted alkyl radical and Z represents a resin to which the functional groups are attached.

Abstract: A novel microporous resin which is useful in the treatment of hyperchloesterolemia. This resin is comprised of a cross-linked polystyrene matrix and is characterized by active moieties selected from among methylamino, methylammonium or a combination of methylamino and methylammonium groups. The porosity of this resin is capable of absorbing and retaining bile salts having an average diameter of 150-200 Angstrom units.

Abstract: Anion exchange resins produced by reacting a stabilized polychloromethylstyrene polymer bead with a polyamine containing at least two tertiary amine groups of which at least one is a terminal group, and processes for producing the resins in uniform sizes.

Abstract: Polymers, such as ethylene-vinylacetate copolymer, polyvinyl alcohol or cellulose, containing amine groups or salts thereof or quaternary ammonium groups are disclosed. The polymers can be processed easily and display other interesting chemical properties such as having the particular chemical properties of the functional groups they contain. These polymers are prepared, generally by reacting a hydroxyl-containing polymer with a reactive compound which contains an available amine group.

Abstract: A method for removing a weak acid from an aqueous solution containing said acid is disclosed. The method comprises contacting said aqueous solution with an anion exchanger containing both strongly basic and weakly basic groups, said exchanger having a matrix comprising a copolymer of styrene and not more than about 20%, by weight, of a cross-linking agent, from about 3% to about 90% of the total basic groups being strongly basic groups of the quaternary ammonium type having the structure --CH.sub.2 N.sup.+ R.sub.1 R.sub.2 R.sub.3, wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of --CH.sub.3, --C.sub.2 H.sub.5, and --C.sub.2 H.sub.4 OH, and the balance of the basic groups being weakly basic groups of the tertiary amine type.

Abstract: A heavy metal ion adsorbent represented by the following general formula: ##STR1##wherein l, m, and n are 2 or 3, respectively; R is an alkyl group containing 4 to 6 carbon atoms which is substituted by an amino group in the .omega.-position; and A is hydrogen or a synthetic resin.

Abstract: A diethylaminoethyl derivative or its salt is reacted with a synthetic resin of a macroporous type having functional groups reactive with said diethylaminoethyl derivative or its salt, having a specific area of at least 1 m.sup.2 /g-dry resin and containing macropores of which the total volume of those with pore sizes from 100 A to 2,000 A is at least 0.1 cc/g-dry resin, in the presence of an alkaline compound to give an enzyme-immobilization carrier which can provide an immobilized enzyme high in activity with good activity retentivity and also large in amount of the immobilized enzyme per unit weight of the carrier.

Abstract: A method for the preparation of water-insoluble gels containing at least a hydroxyl group and a carboxylate group in molecules thereof which comprises saponifying copolymers comprising a vinyl ester component and an acrylic or methacrylic acid ester component or terpolymers comprising said two components and an ethylene component in the presence of an alkali catalyst and a solvent under conditions in which said copolymers or terpolymers are not dissolved.

Abstract: A cation exchange membrane is produced by treating a membrane of a fluorinated polymer having sulfonyl halide group on side chains with a mixture of 1 a reaction product of an amine with a halogenated monomer and 2 a vinyl monomer and/or diene monomer each of which has carboxylic acid group, phenolic hydroxyl group, sulfonic acid group and/or a functional group being convertible into carboxylic acid group, phenolic hydroxyl group or sulfonic acid group.

Abstract: Metal ions, for example, heavy metal ions, alkaline earth metal ions and aluminium ions are eliminated by bringing a liquid containing the metal ions into contact with a special chelate resin in which chelating carboxylic anion groups are associated with basic amino acid cations, for example, lysine, ornithine, histidine, arginine, .alpha.,.beta.-diaminopropionic acid, .alpha.,.gamma.-diaminobutyric acid, L-citrulline and .delta.-oxylysine.

Abstract: A process of making an amphoteric polymeric composition which process comprises dispersing particles of an ion exchange resin comprising either weakly basic or weakly acidic ionogenic groups in a solution comprising one or more monomers containing an ionogenic group, or organic precursor thereof, of opposite charge to the ionogenic groups of the ion exchange resin particle, wherein the ion exchange resin particle and the monomer are not of opposite charge, and a crosslinking agent comprising two or more vinylic or allylic groups; secondly polymerizing the monomer to give a macroporous crosslinked polymer matrix; and thirdly treating the polymeric composition to convert any organic precursors to ionogenic groups to form an amphoteric polymeric composition.

Abstract: Chloromethylated hybrid copolymers are base-functionalized with polyethyleneimines prior to conventional acid functionalization, to produce hybrid resins with markedly improved ion exchange properties.

Abstract: Water swellable ion exchange resins comprising a polymeric matrix and amidine groups are described together with their synthesis. The preferred amidine groups are nitrate selective and methods of selectively removing nitrate from water are also described.

Abstract: A partially polyenized polyvinyl alcohol fiber is obtained by heating and dehydration polyvinyl alcohol type fibers at temperatures of about 80.degree. to 350.degree. C so that the dehydration weight loss falls within the range of about 5% to 40%. An ion-exchange radical is introduced into the partially polyenized polyvinyl alcohol fiber to obtain fibers with an ion-exchange capacity. The ion-exchange fiber thus obtained exhibits an exchange capacity comparable to ion-exchange resins and has practical properties as fibers, such as good chemical resistance and flexibility.