Anion exchange resin preparation method (3)

(5) Mannich amination reaction (I)

This method requires the introduction of active groups on the benzene ring before the Mannich reaction, otherwise the Mannich reaction is difficult to proceed.

The method avoids the use of chloromethyl ether , and the Mannich reaction is simple and easy to implement.

(6) Mannich amination reaction (II)

This method uses the activity of the acetyl group to carry out the Mannich reaction by introducing an acetyl group on the benzene ring

Xu Hui published a method for preparing weakly basic anion exchange resin in patent CN96101131.

In addition, Xu Hui et al.

The method avoids the use of chloromethyl ether, and also eliminates the influence of secondary crosslinking, and the reagents used in the reaction are simple and easy to obtain, cheap, low in toxicity, and mild in reaction conditions.

In addition, acrylic anion exchange resin is another anion exchange resin with a wide range of applications