Salicylic acid chelating ion exchange resin modified by quaternary ammonium cation
A quaternary ammonium cation and exchange resin technology, applied in the field of polymer functional materials, can solve the problems of unstable ion exchange performance, high raw material cost, complex preparation process and the like
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[0016] The following examples further illustrate the quaternary ammonium cation-modified salicylic acid type cross-linked polystyrene resin provided by the present invention and its preparation method, the purpose of which is to better understand the content of the present invention.
[0017] Preparation and properties and application of the salicylic acid type cross-linked polystyrene resin modified by the quaternary ammonium cation
[0018] Step 1. Disperse 10 grams of chloromethylated cross-linked polystyrene resin balls with a particle size of 0.22 to 0.45 mm, a degree of cross-linking of 2.7, and a chlorine content of 13.45% in 100 ml of 40% by mass In the piperazine aqueous solution, after stirring at room temperature for 24 hours, gradually raise the temperature to 95-105°C, continue to stir and react for 6 hours, filter out the resin balls from the piperazine aqueous solution, and after drying, obtain 12.12 grams of weakly basic cross-linked polystyrene resin ball.
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