C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
403/4
C08F 8/00 (2006.01) B01J 41/14 (2006.01)
Patent
CA 1262798
ABSTRACT A process for preparing anion exchange resins containing less than 0.5 equivalent percent total chloride based on active sites of resin, involves preparing cross-linked polymer beads by (a) forming a suspension of a plurality of cross-linked free-radical matrices in a continuous phase and (b) contacting said free-radical matrices with a monomer feed comprising at least one monomer under conditions such that said monomer feed is imbibed by said free-radical matrices and the free radicals in said free-radical matrices catalyze the polymerization of said monomer feed with said free radical matrices, haloalkylating and func- tionalizing said cross-linked polymer beads, and con- tacting the functionalized cross-linked polymer beads at a temperature less than 60°C with an effective amount of at least one agent exchangeable with chloride ions.
493691
Harris William I.
Smart & Biggar
The Dow Chemical Company
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