Abstract: A catalyst prepared by polymerizing 0-98 weight % butylstyrene; 0-80 weight % vinyl toluene; 1.5-25 weight % divinyl benzene having 1-98 weight % of ethyl vinyl benzene; and 0-80 weight % styrene. Copolymer beads are made, sulfonated, and used as a catalyst.

Abstract: A water-insoluble copolymer including an epoxide containing structural unit represented by Formula (I), wherein: the epoxide containing group is positioned meta, ortho or para on the ring relative to the bond linkage with the polymer backbone; L is an optional linking group; and R1, R2 and R3 are independently selected from: hydrogen, or a substituted or unsubstituted hydrocarbyl group.

Abstract: A water-insoluble copolymer including an epoxide containing structural unit represented by Formula (I), wherein: the epoxide containing group is positioned meta, ortho or para on the ring relative to the bond linkage with the polymer backbone; L is an optional linking group; and R1, R2 and R3 are independently selected from: hydrogen, or a substituted or unsubstituted hydrocarbyl group.

Abstract: A catalyst prepared by polymerizing 0-98 weight % butylstyrene; 0-80 weight % vinyl toluene; 1.5-25 weight % divinyl benzene having 1-98 weight % of ethyl vinyl benzene; and 0-80 weight % styrene. Copolymer beads are made, sulfonated, and used as a catalyst.

Abstract: A process for preparing a strong acid catalyst by polymerizing 0-98 weight % butylstyrene; 0-80 weight % vinyl toluene; 1.5-25 weight % divinyl benzene having 1-98 weight % of ethyl vinyl benzene; and 0-80 weight % styrene. Copolymer beads are made, sulfonated, and used as a catalyst.

Abstract: Use a modified, amine-functionalized anion exchange resin as a catalyst to produce a bishalohydrin ether and then dehydrohalogenate the bishalohydrin ether with an aqueous inorganic hydroxide mixture to yield a liquid epoxy resin.

Abstract: The present invention relates to a method for the production of improved shell functionalized ion exchange resins from core/shell copolymer having a highly crosslinked core.

Abstract: The present invention relates to a method for the production of improved shell functionalized ion exchange resins from core/shell copolymer having a highly crosslinked core.

Abstract: Use a modified, amine-functionalized anion exchange resin as a catalyst to produce a bishalohydrin ether and then dehydrohalogenate the bishalohydrin ether with an aqueous inorganic hydroxide mixture to yield a liquid epoxy resin.

Abstract: The invention generally relates to amination reactions and amination reaction products, and particularly to methods for aminating vinyl aromatic polymers utilizing tertiary amines. In one embodiment, the invention includes conducting an amination reaction by combining a tertiary amine and a vinyl aromatic polymer comprising benzyl chloride groups to form a reaction mixture and maintaining the pH of the reaction mixture within a designated range. In another embodiment, the invention includes an aminated vinyl aromatic polymer. In yet another embodiment, the invention includes an ion exchange resin including quaternary ammonium functionality. The invention is useful in preparing ion exchange resins suitable for a variety of applications such as the removal of perchlorate ions from water sources and recovery of gold cyanide from mining leach solutions.

Abstract: A method for processing effluent from a chloromethylation of a vinyl aromatic polymer wherein the effluent includes catalyst and volatile organics, and wherein the method includes the steps of: 1) deactivating at least a portion of the catalyst; 2) distilling the effluent; 3) adding caustic to the effluent; and 4) distilling the effluent.

Abstract: The invention generally relates to amination reactions and amination reaction products, and particularly to methods for aminating vinyl aromatic polymers utilizing tertiary amines. In one embodiment, the invention includes conducting an amination reaction by combining a tertiary amine and a vinyl aromatic polymer comprising benzyl chloride groups to form a reaction mixture and maintaining the pH of the reaction mixture within a designated range. In another embodiment, the invention includes an aminated vinyl aromatic polymer. In yet another embodiment, the invention includes an ion exchange resin including quaternary ammonium functionality. The invention is useful in preparing ion exchange resins suitable for a variety of applications such as the removal of perchlorate ions from water sources and recovery of gold cyanide from mining leach solutions.

Abstract: A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.

Abstract: A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.

Abstract: A method for processing effluent from a chloromethylation of a vinyl aromatic polymer wherein the effluent comprises catalyst and volatile organics, and wherein the method comprising the steps of: 1) deactivating at least a portion of the catalyst; 2) distilling the effluent; 3) adding caustic to the effluent; and 4) distilling the effluent.

Abstract: An improved process for conducting an etherification reaction has been discovered. The process employs a macroporous strong-acid, cation-exchange resin catalyst prepared at a temperature of about 120.degree. C. or higher with a reduced amount of divinylbenzene crosslinker. The etherification catalysts produced in the invention display equivalent or superior catalytic activity than conventional catalysts and are less expensive to produce than conventional catalysts due to reduced amounts of crosslinker.

Abstract: Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange resin beads. Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.

Abstract: Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange in beads Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.

Abstract: A process for preparing crosslinked copolymer beads suitable for making polymeric adsorbents and ion-exchange resins comprising the substantially adiabatic suspension copolymerization of at least one monoethylenically unsaturated monomer with at least one polyethylenically unsaturated monomer in the presence of an effective amount of free-radical polymerization initiators.

Abstract: The invention concerns preparation of porous copolymer beads by a seeded polymerization process employing gel copolymer seed particles. The process comprises initially providing a plurality of gel-type copolymer seed particles prepared by polymerization of at least one first monovinylidene monomer and a first cross-linking monomer. A second monomer mixture comprising at least one second monovinylidene monomer, a second cross-linking monomer, and a phase-separating diluent is thereafter imbibed by the seed particles and polymerized therein. The process is characterized by selecting the first monovinylidene monomers such that the phase-separating diluent and second monovinylidene monomers are capable of being imbibed by the seed particles in an amount sufficient to form a porous copolymer. The porous copolymer beads produced have stable polymeric structures and good physical properties that render them useful in preparing ion-exchange resins and polymeric adsorbents.