摘要:
A polymeric bead having radius R wherein the polymer comprises 0.3% to 20% by weight, based on the weight of the polymer, of polymerized units of one or more multifunctional vinyl monomer and 80% to 99.7% by weight, based on the weight of the polymer, of polymerized units of one or more monofunctional vinyl monomer, (a) wherein the polymerized units of multifunctional vinyl monomer have radial distribution factor MR of 0.9 to 1.1, and (b) wherein some of the vinyl groups in the polymerized units of multivinyl monomer are unreacted, and the unreacted vinyl groups have a radial distribution factor VR of 2.5 or higher.
摘要:
Provided is a method of regenerating an acrylic resin (B2), comprising (A) providing a collection of particles of acrylic resin (B2) that has calculated Hansch parameter of −1.0 to 2.5, wherein one or more humic acid, one or more fulvic acid, or a mixture thereof, is adsorbed onto said acrylic resin (B2), and (B) bringing said collection of particles of acrylic resin (B2) into contact with an aqueous solution (RA) having pH of 4 or lower, to form a mixture B2RA, (C) then separating acrylic resin (B3) from said mixture B2RA.
摘要:
Provided is a method of regenerating an acrylic resin (B2), comprising (A) providing a collection of particles of acrylic resin (B2) that has calculated Hansch parameter of −1.0 to 2.5, wherein one or more humic acid, one or more fulvic acid, or a mixture thereof, is adsorbed onto said acrylic resin (B2), and (B) bringing said collection of particles of acrylic resin (B2) into contact with an aqueous solution (RB) having pH of 10 or higher, to form a mixture B2RB, (C) then separating acrylic resin (B4) from said mixture B2RB.
摘要:
Provided is a method of treating a vinyl aromatic resin (I) comprising (a) bringing the vinyl aromatic resin (I) into contact with an alcohol, and maintaining the contact between the vinyl aromatic resin (I) and the alcohol for 10 minutes or more, and (b) bringing the vinyl aromatic resin into contact with a base. wherein the vinyl aromatic resin (I), prior to steps (a) and (b), has benzyl chloride groups, benzyl alcohol groups, and methylene bridge groups.
摘要:
Provided is a method of purifying water comprising (a) providing an aqueous solution (A) that has pH of 5.5 or lower and that comprises (i) one or more dissolved organic compounds in an amount of 5 mg/L or more, measured as dissolved organic carbon, and (ii) 95% or more water by weight based on the weight of the aqueous solution (A), and (b) bringing the aqueous solution (A) into contact with a collection of particles of acrylic resin (B) that has calculated Hansch parameter of −1.0 to 2.5, and (c) then separating an aqueous solution (C) from the collection of particles of acrylic resin (B).
摘要:
A method for making an anion exchange or chelant resin comprising a vinyl aromatic polymer including a repeating unit comprising an aromatic ring substituted with an aliphatic amino group, wherein the method comprises the step of reacting a vinyl aromatic polymer with a nitro compound comprising from 1 to 12 carbon atoms with the proviso that the a carbon includes at least one hydrogen.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A method for making an anion exchange or chelant resin comprising a vinyl aromatic polymer including a repeating unit comprising an aromatic ring substituted with an aliphatic amino group, wherein the method comprises the step of reacting a vinyl aromatic polymer with a nitro compound comprising from 1 to 12 carbon atoms with the proviso that the α carbon includes at least one hydrogen.