Resins having improved exchange kinetics

Details Resins having improved exchange kinetics Resins having improved exchange kinetics

C - Chemistry, Metallurgy

08

F

C08F 8/30 (2006.01) B01J 41/04 (2006.01) B01J 41/14 (2006.01) B01J 45/00 (2006.01)

Patent

CA 2064316

ABSTRACT Disclosed are novel ion-exchange and chelate- exchange resins having improved exchange kinetics for separating chemical species from liquids. The resins are prepared from copolymer beads consisting of a monovinyl aromatic monomer and a cross linking monomer. The copolymer beads are functionalized such that weak- base exchange moieties are substituted at haloalkylated sites which are most accessible to diffusion into the beads, while hydrophilic, strong-base exchange moieties are substituted at haloalkylated sites which are least accessible to diffusion. The resins have improved exchange kinetics due to shortened diffusion path lengths for the chemical species being separated and improved diffusion into the resin beads due to the hydrophilic, strong-base exchange moieties. 37,506-F

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