Chloromethylated styrene-DVB copolymer

In order to impart hydrophilicity to neutral hydrophobic hypercrosslinked adsorbing resin CHA-101 (also obtained by post-crosslinking chloromethylated styrene-DVB copolymer), the latter was subjected to heating at 100°C within 12h in nitrobenzene in the presence of FeCb (6g per 30 g of sorbent beads) [92]. The resulting resin, NDA-702, was stated to be directly wetted by water. A comparative study of dimethyl phthalate adsorption at 10°C onto NDA-702, XAD-4, and AC-750 activated carbon showed that the sorbents take 500, 400, and 300 mg/g of the ester, respectively. The loading capacity of the sorbents decreases by 50-100 mg/g with temperature rising to 40°C. 

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