The invention relates to sulfonated aminomethylated chelate resins, to a method for producing same, to the use thereof for obtaining and purifying metals, in particular rare earth metals, from aqueous solutions and organic liquids, and for producing highly pure silicon.

A resin composition of the present invention includes a polymer compound (A) containing a repeating unit (Q) represented by the following general formula (1): ##STR00001## wherein R.sub.1 represents a hydrogen atom, a methyl group, or a halogen atom; R.sub.2 and R.sub.3 represent a hydrogen atom, an alkyl group, or a cycloalkyl group; L represents a divalent linking group or a single bond; Y represents a substituent excluding a methylol group; Z represents a hydrogen atom or a substituent; m represents an integer of 0 to 4; n represents an integer of 1 to 5; and m+n is 5 or less.

A resin composition of the present invention includes a polymer compound (A) containing a repeating unit (Q) represented by the following general formula (1): ##STR00001## wherein R.sub.1 represents a hydrogen atom, a methyl group, or a halogen atom; R.sub.2 and R.sub.3 represent a hydrogen atom, an alkyl group, or a cycloalkyl group; L represents a divalent linking group or a single bond; Y represents a substituent excluding a methylol group; Z represents a hydrogen atom or a substituent; m represents an integer of 0 to 4; n represents an integer of 1 to 5; and m+n is 5 or less.

A resin composition of the present invention includes a polymer compound (A) containing a repeating unit (Q) represented by the following general formula (1): ##STR00001## wherein R.sub.1 represents a hydrogen atom, a methyl group, or a halogen atom; R.sub.2 and R.sub.3 represent a hydrogen atom, an alkyl group, or a cycloalkyl group; L represents a divalent linking group or a single bond; Y represents a substituent excluding a methylol group; Z represents a hydrogen atom or a substituent; m represents an integer of 0 to 4; n represents an integer of 1 to 5; and m+n is 5 or less.

The present disclosed are a high exchange-capacity anion exchange resin with dual functional-groups and method of synthesis thereof. The invention relates to the field of environmental function material synthesis and application. The resin is based on chloromethylated polystyrene-divinylbenzene polymer as matrix, and by primary amination and quaternization, yields an anion exchange resin with dual functional-groups having both a weak base anionic group and a strong base anionic group. The anion exchange resin not only has high adsorption capacity for water-born nitrate ions, but also can effectively squelch natural organic acids such as phytic acid in water, thus simultaneously removing nitrate ions and phytic acid organic matter from water. Therefore, the resin has a broad application potential in the fields of drinking water treatment, groundwater remediation, and advanced urban sewage treatment.

The present disclosed are a high exchange-capacity anion exchange resin with dual functional-groups and method of synthesis thereof. The invention relates to the field of environmental function material synthesis and application. The resin is based on chloromethylated polystyrene-divinylbenzene polymer as matrix, and by primary amination and quaternization, yields an anion exchange resin with dual functional-groups having both a weak base anionic group and a strong base anionic group. The anion exchange resin not only has high adsorption capacity for water-born nitrate ions, but also can effectively squelch natural organic acids such as phytic acid in water, thus simultaneously removing nitrate ions and phytic acid organic matter from water. Therefore, the resin has a broad application potential in the fields of drinking water treatment, groundwater remediation, and advanced urban sewage treatment.

The present invention provides, inter alia, a process for incorporating a cyclopropenium ion into a polymeric system. Processes for making cross-linked polymers, linear polymers, and dendritic polymers, as well as for incorporating a cyclopropenium ion onto a preformed polymer are also provided. Further provided are stable, polycationic compounds, various polymers that contain stable cyclopropenium cations, and substrates containing such polymers. The use of these polymers in water purification systems, antimicrobial coatings, ion-transport membranes, cell supports, drug delivery vehicles, and gene therapeutic vectors are also provided.

The present invention provides, inter alia, a process for incorporating a cyclopropenium ion into a polymeric system. Processes for making cross-linked polymers, linear polymers, and dendritic polymers, as well as for incorporating a cyclopropenium ion onto a preformed polymer are also provided. Further provided are stable, polycationic compounds, various polymers that contain stable cyclopropenium cations, and substrates containing such polymers. The use of these polymers in water purification systems, antimicrobial coatings, ion-transport membranes, cell supports, drug delivery vehicles, and gene therapeutic vectors are also provided.

The present invention provides, inter alia, a process for incorporating a cyclopropenium ion into a polymeric system. Processes for making cross-linked polymers, linear polymers, and dendritic polymers, as well as for incorporating a cyclopropenium ion onto a preformed polymer are also provided. Further provided are stable, polycationic compounds, various polymers that contain stable cyclopropenium cations, and substrates containing such polymers. The use of these polymers in water purification systems, antimicrobial coatings, ion-transport membranes, cell supports, drug delivery vehicles, and gene therapeutic vectors are also provided.

Disclosed are oral care compositions of novel phosphono-phosphate and anionic group containing polymer compositions that have targeted uses with divalent cations and surfaces having divalent cations. These compounds can be used to deliver anionic character to surfaces such as calcium hydroxyapatite for use in oral care applications.