C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/320, 402/399
C08F 220/38 (2006.01) B01J 43/00 (2006.01) C08F 8/00 (2006.01) C08F 8/36 (2006.01) C08F 220/20 (2006.01)
Patent
CA 1099049
ABSTRACT OF THE DISCLOSURE : The present invention relates to a method for prepara- tion of cation active and amphoteric ion-exchangers from macroporous hydrophilic polymers containing crosslinked copolymers having hydroxyl groups in their structure, said crosslinked copolymers being prepared by suspension copoly- merization of monomers selected from the group consisting of hydroxylalkyl methacrylates, hydroxyalkyl acrylates, oligo- glycol acrylates and oligoglycol methacrylates, with cross- linking divinyl monomers selected from the group consisting of divinylbenzene, ethylene dimethacrylate, butylenediol dia- crylate, said copolymers being modified by treatment with mineral acids or addition compounds of sulfur trioxide, sulfuric acid or chlorosulfuric acid with alcohols or pyridine at a temperature of 0° -50°C for 0,1 to 40 hours, or by the reaction with unsaturated compounds selected among acryloni- trile, methacrylonitrile, sodium vinylsulfonate, in a strongly alkaline medium, or by the reaction with halogenoalkylam- monium compounds.
254099
Coupek Jiri
Hradil Jiri
Stamberg Jiri
Ceskoslovenska Akademie Ved
Robic Robic & Associes/associates
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