Abstract: Provided is a process of making polymeric beads comprising (a) providing a suspension of monomer droplets in an aqueous medium at pH of 7 or less, wherein the monomer droplets comprise one or more monofunctional vinyl monomers, one or more multifunctional vinyl monomers, and one or more initiators, wherein the aqueous medium comprises one or more derivatives of a nitrite salt in an amount, by weight based on the weight of the aqueous medium, of 0.005% to 0.5%, (b) initiating polymerization of the monomer, wherein no pH-raising substance is added after beginning step (b) until 60% or more by weight of all monofunctional monomer has been converted to polymer.

Abstract: Provided is a resin composition comprising (a) a collection of resin beads, wherein the collection of resin beads has pH of 8 or above, and wherein the collection of resin beads has volume average diameter of 150 ?m to 2,000 ?m; and (b) a collection of inorganic particles, wherein the inorganic particles contain one or more alkaline earths, and wherein the collection of inorganic particles has volume average diameter of 0.5 ?m to 50 ?m. Also provided is a method of processing an aqueous composition using such a composition.

Abstract: Provided is a collection of polymer beads, wherein the volume distribution expressed as a function of bead diameter comprises (A1) a first peak having a maximum of PM1 at diameter PD1 and having full width at half maximum of 75 ?m or less, (A2) a second peak having a maximum of PM2 at diameter PD2 and having full width at half maximum of 75 ?m or less; and (B1) a valley having a minimum value of VM1 at a diameter between PD1 and PD2, wherein VM1 is less than 0.25*PM1 and VM1 is also less than 0.25*PM2. wherein the polymer beads comprise polymerized units of one or more monofunctional vinyl monomer and one or more multifunctional vinyl monomer.

Abstract: A method for producing an ion exchange resin. The method comprises steps of: (a) providing a basic ion exchange resin in the acidic form which comprises amino polyol groups and has a volume % swell from 15 to 30% upon conversion from the basic form to the acidic form, and (b) washing the resin with water or aqueous acid.

Abstract: Provided is a method of making a collection of polymer beads comprising (a1) forming a first collection of monomer droplets in an aqueous medium in a container, wherein the first collection of monomer droplets has volume-average diameter DAV1 and has uniformity coefficient less than 1.3; (a2) forming a second collection of monomer droplets in the aqueous medium in the container, wherein the second collection of monomer droplets has volume-average diameter DAV2 and has uniformity coefficient less than 1.3, wherein DAV1 and DAV2 differ by 10 ?m or more; wherein either step (a1) and step (a2) are performed simultaneously; or step (a2) is performed after step (a1), while the first collection of monomer droplets remains in the container; or a combination thereof; and (b) after steps (a1) and (a2), polymerizing the monomer droplets by suspension polymerization to form the polymer beads.

Abstract: Provided is a resin composition comprising (a) a collection of resin beads, wherein the collection of resin beads has pH of 8 or above, and wherein the collection of resin beads has volume average diameter of 150 ?m to 2,000 ?m; and (b) a collection of inorganic particles, wherein the inorganic particles contain one or more alkaline earths, and wherein the collection of inorganic particles has volume average diameter of 0.5 ?m to 50 ?m. Also provided is a method of processing an aqueous composition using such a composition.

Abstract: Provided is a process of making polymeric beads comprising (a) providing a suspension of monomer droplets in an aqueous medium at pH of 7 or less, wherein the monomer droplets comprise one or more monofunctional vinyl monomers, one or more multifunctional vinyl monomers, and one or more initiators, wherein the aqueous medium comprises one or more derivatives of a nitrite salt in an amount, by weight based on the weight of the aqueous medium, of 0.005% to 0.5%, (b) initiating polymerization of the monomer, wherein no pH-raising substance is added after beginning step (b) until 60% or more by weight of all monofunctional monomer has been converted to polymer.

Abstract: Provided is a method of making droplets distributed in an aqueous medium comprising bringing into contact (i) an organic solution comprising 0.002% or more of one or more boronic acids, by weight based on the weight of the organic solution, and (ii) an aqueous solution comprising polyvinyl alcohol.

Abstract: Provided is a composition comprising droplets distributed in an aqueous medium, wherein the droplets comprise one or more boronic acids, and wherein the aqueous medium comprises polyvinyl alcohol.

Abstract: Provided is a method of suspension polymerization comprising (I) providing a composition comprising droplets distributed in an aqueous medium, wherein the droplets comprise one or more boronic acids, one or more monomers, and one or more initiators, and wherein the aqueous medium comprises polyvinyl alcohol; wherein the one or more boronic acids are present in an amount of 0.002% or more, by weight based on the weight of the droplets, and (II) stressing the composition so that the initiator initiates polymerization of the monomer.

Abstract: Provided is a method of making a collection of polymer beads comprising (a1) forming a first collection of monomer droplets in an aqueous medium in a container, wherein the first collection of monomer droplets has volume-average diameter DAV1 and has uniformity coefficient less than 1.3; (a2) forming a second collection of monomer droplets in the aqueous medium in the container, wherein the second collection of monomer droplets has volume-average diameter DAV2 and has uniformity coefficient less than 1.3, wherein DAV1 and DAV2 differ by 10 ?m or more; wherein either step (a1) and step (a2) are performed simultaneously; or step (a2) is performed after step (a1), while the first collection of monomer droplets remains in the container; or a combination thereof; and (b) after steps (a1) and (a2), polymerizing the monomer droplets by suspension polymerization to form the polymer beads.

Abstract: Provided is a collection of polymer beads, wherein the volume distribution expressed as a function of bead diameter comprises (A1) a first peak having a maximum of PM1 at diameter PD1 and having full width at half maximum of 75 ?m or less, (A2) a second peak having a maximum of PM2 at diameter PD2 and having full width at half maximum of 75 ?m or less; and (B1) a valley having a minimum value of VM1 at a diameter between PD1 and PD2, wherein VM1 is less than 0.25*PM1 and VM1 is also less than 0.25*PM2. wherein the polymer beads comprise polymerized units of one or more monofunctional vinyl monomer and one or more multifunctional vinyl monomer.

Abstract: Provided is a method of forming a polymer, comprising (a) providing a reaction mixture comprising (i) one or more vinyl monomers, (ii) one or more pH-sensitive inhibition systems, (iii) one or more initiators, and (iv) water; (b) establishing conditions in said reaction mixture such that a free radical polymerization of said vinyl monomer occurs at a location, and (c) after steps (a) and (b) and prior to completion of said free radical polymerization, changing the pH of said reaction mixture to increase the rate of generation of said free radical polymerization at the location of said free radical polymerization.

Abstract: Provided is a method of forming a polymer, comprising (a) providing a reaction mixture comprising (i) one or more vinyl monomers, (ii) one or more pH-sensitive inhibition systems, (iii) one or more initiators, and (iv) water; (b) establishing conditions in said reaction mixture such that a free radical polymerization of said vinyl monomer occurs at a location, and (c) after steps (a) and (b) and prior to completion of said free radical polymerization, changing the pH of said reaction mixture to increase the rate of generation of said free radical polymerization at the location of said free radical polymerization.

Abstract: Provided is a method of suspension polymerization comprising (I) providing a composition comprising droplets distributed in an aqueous medium, wherein the droplets comprise one or more boronic acids, one or more monomers, and one or more initiators, and wherein the aqueous medium comprises polyvinyl alcohol; wherein the one or more boronic acids are present in an amount of 0.002% or more, by weight based on the weight of the droplets, and (II) stressing the composition so that the initiator initiates polymerization of the monomer.

Abstract: Provided is a composition comprising droplets distributed in an aqueous medium, wherein the droplets comprise one or more boronic acids, and wherein the aqueous medium comprises polyvinyl alcohol.

Abstract: Provided is a method of making droplets distributed in an aqueous medium comprising bringing into contact (i) an organic solution comprising 0.

Abstract: Provided is a method of suspension polymerization comprising (i) providing a suspension of liquid droplets in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble vinyl monomers, and (b) a polyelectrolyte (PED) having a polarity, (c) one or more initiators, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity that is opposite to the polarity of said polyelectrolyte (PED), (ii) polymerizing said vinyl monomer or allowing said vinyl monomer to polymerize.

Abstract: Provided is a suspension comprising liquid droplets dispersed in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble compounds, and (b) a vinyl polyelectrolyte (PED) having a polarity, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity that is opposite to the polarity of said polyelectrolyte (PED). Also provided are a method of making such a suspension and a method using such a suspension in a process of suspension polymerization.

Abstract: Provided is a method of suspension polymerization comprising (i) providing a suspension of liquid droplets in an aqueous medium, wherein said droplets comprise (a) one or more water-insoluble vinyl monomers, and (b) a polyelectrolyte (PED) having a polarity, (c) one or more initiators, and wherein said aqueous medium comprises a polyelectrolyte (PEW) having a polarity that is opposite to the polarity of said polyelectrolyte (PED), (ii) polymerizing said vinyl monomer or allowing said vinyl monomer to polymerize.